JL Audio Car Stereo System 1000 1 User Manual

JL AUDIO 1000/1  
monoblock subwoofer amplifier  
o w n e r ’ s m a n u a l  
Thank you for purchasing a JL Audio amplifier for  
your automotive sound system.  
Your amplifier has been designed and manufactured to exacting  
standards in order to ensure years of musical enjoyment in your  
vehicle. For maximum performance and extended warranty  
coverage, we highly recommend that you have your new amplifier  
installed by an authorized JL Audio dealer. Your authorized  
dealer has the training, expertise and installation equipment to  
ensure optimum performance from this product. Should you  
decide to install the amplifier yourself, please take the time  
to read this manual thoroughly so as to familiarize yourself  
with its installation requirements and setup procedures.  
If you have any questions regarding the instructions in this  
manual or any aspect of your amplifier’s operation, please contact  
your authorized JL Audio dealer for assistance. If you need further  
assistance, please call the JL Audio Technical Support Department at  
(954) 443-1100 during business hours (Eastern Time Zone).  
 
PRODUCT DESCRIPTION  
POWER CONNECTIONS  
The JL Audio 1000/1 is a monoblock subwoofer  
amplifier utilizing proprietary and patented Class D  
technology. Its frequency response is limited to the  
range below 250 Hz. It is not designed  
for driving midrange speakers or tweeters.  
Every aspect of its operation has been optimized  
for low-frequency amplification. For detailed  
specifications, please refer to Appendix E (page 21).  
7) Securely mount the amplifier using the  
supplied screws.  
8) Connect the positive and negative power  
wires to the amplifier.A fuse near the amplifier is  
not necessary.  
9) Connect the remote turn-on wire to  
the amplifier.  
10) Connect the RCA input cables to  
the amplifier.  
11) Connect the speaker wires to the amplifier.  
12) Carefully review the amplifier’s control  
settings to make sure that they are set according to  
the needs of the system.  
13) Install power wire fuse (100A for a single  
1000/1) and reconnect the negative battery  
post terminal.  
14) Turn on the source unit at a low level  
to double-check that the amplifier is configured  
correctly. Resist the temptation to crank it up until  
you have verified the control settings.  
15) Make necessary adjustments to the input  
sensitivity control to obtain the right overall output  
and the desired balance between the subwoofer  
output and the satellite (mid and high-frequency)  
output. See Appendix B (page 14) for the  
recommended input sensitivity setting method.  
16) Enjoy the fruits of your labor with your  
favorite music.  
Before installing the amplifier, disconnect the  
negative (ground) wire from the vehicle's battery.  
This will prevent accidental damage to the system,  
the vehicle and your person during installation.  
Any wires run through metal barriers (such as  
firewalls), must be protected with a high quality  
rubber grommet to prevent damage to the  
insulation of the wire. Failure to do so may result in  
a dangerous short circuit.  
+12VDC  
Ground Remote  
IMPORTANT  
!
Many vehicles employ small (10 AWG -  
6 AWG) wire to ground the battery to the  
vehicle chassis and to connect the alternator's  
positive connection to the battery.To prevent  
voltage drops, these wires should be upgraded to  
4 AWG (or larger) when installing amplifier  
systems with total fuse ratings exceeding 60A.  
TYPICAL INSTALLATION SEQUENCE  
The following represents the sequence for a  
typical amplifier installation, using an aftermarket  
source unit. Additional steps and different  
procedures may be required in some applications.  
If you have any questions, please contact your  
authorized JLAudio dealer for assistance.  
The 1000/1's “+12VDC” and “Ground”  
connections are designed to accept 4 AWG power  
wire. 4 AWG is the only recommended  
power wire size for this amplifier.  
If you are installing the 1000/1 with other  
amplifiers and wish to use a single main power wire,  
use 2 AWG or 1/0 AWG main power wire  
(depending on the overall current demands of all  
the amplifiers in the system).This 2 AWG or  
1/0 AWG power wire should terminate into a  
distribution block mounted as close to the amplifiers  
as possible and should connect to the 1000/1 with  
4 AWG power wire.  
Please note that smaller AWG numbers mean  
bigger wire and vice-versa (1/0 AWG is biggest,  
2 AWG is smaller, then 4 AWG, then 8 AWG, etc.).  
To connect the power wires to the amplifier,  
first back out the set screw on the top of the  
amplifier, using the supplied 2.5 mm hex wrench.  
Strip 1/2 inch (12 mm) of insulation from the end  
of each wire and insert the bare wire into the  
receptacle on the front panel of the amplifier,  
seating it firmly so that no bare wire is exposed.  
While holding the wire in place, tighten the set  
screw firmly, taking care not to strip the head  
of the screw.  
The ground connection should be made using  
the same gauge wire as the power connection  
and should be kept as short as possible, while  
accessing a solid piece of sheet metal in the vehicle.  
The surface of the sheet metal should be sanded at  
the contact point to create a clean, metal-to-metal  
connection between the chassis and the termination  
of the ground wire.The use of a star washer to lock  
down the connection is advisable.  
FUSE REQUIREMENTS  
It is absolutely vital that the main power  
lead to the amplifier(s) in the system be fused  
within 18 inches (45 cm) of the positive battery  
post connection.The fuse value at each power  
wire should be high enough for all of the  
equipment being run from that power wire.  
If only the 1000/1 is being run from that power  
wire, we recommend a 100A ANL (large blade-  
type fuse pictured below) be used.  
1) Disconnect the negative battery post  
connection and secure the disconnected cable to  
prevent accidental re-connection during installation.  
This step is not optional!  
2) Run power wire (minimum 4 AWG) from  
the battery location to the amplifier mounting  
location, taking care to route it in such a way that  
it will not be damaged and will not interfere  
with vehicle operation. Use 2 AWG or 1/0 AWG  
power wire if additional amplifiers are being  
installed with the 1000/1.  
3) Connect power wire to the positive battery  
post. Fuse the wire with an appropriate fuse block  
(and connectors) within 18 inches (45 cm) wire  
length of the positive battery post. This fuse is  
essential to protect the vehicle. Do not install  
the fuse until the power wire has been  
connected to the amplifier.  
4) Run signal cables (RCA cables) and remote  
turn-on wire from the source unit to the amplifier  
mounting location.  
No fuse is required directly before the amplifier  
power connection. If one is desired at this  
location, we recommend the use of a 100A ANL  
fuse for each 1000/1.  
5) Run speaker wire from the speaker system to  
the amplifier mounting location.  
6) Find a good, solid metal grounding point close  
to the amplifier and connect the negative power  
wire to it using appropriate hardware. Use the same  
size power wire as the wire connected to the  
“+12V” connection (min. 4 AWG), no longer than  
36 inches (90 cm) from the amplifier to the ground  
connection point. In some vehicles, it may be  
necessary to upgrade the battery ground wire.  
(See page 5 for important notice).  
4
JL AUDIO 1000/1  
JL AUDIO 1000/1  
5
 
REMOTETURN-ON  
AMPLIFIER INPUT SECTION  
CROSSOVER CONTROLS  
The 1000/1 uses a conventional +12V remote  
turn-on lead, typically controlled by the source unit's  
remote turn-on output.The amplifier will turn on  
when +12V is present at its “Remote” input and  
turn off when +12V is switched off. If a source unit  
does not have a dedicated remote turn-on output,  
the amplifier’s turn-on lead can be connected to  
+12V via a switch that derives power from an  
ignition-switched circuit.  
The 1000/1's “Remote” turn-on connector is  
designed to accept 12 AWG – 8 AWG wire.  
12 AWG is more than adequate for this purpose.  
To connect the remote turn-on wire to the  
amplifier, first back out the set screw on the top of  
the amplifier, using the supplied hex wrench. Strip  
1/2 inch (12mm) of wire and insert the bare wire  
into the receptacle on the front panel of the  
amplifier, seating it firmly so that no bare wire is  
exposed. Smaller wire than 12 AWG can be used,  
but it may be necessary to strip 1 inch of insulation  
from the wire and fold the bare wire in half prior to  
insertion.While holding the wire in the terminal,  
tighten the set screw firmly, taking care not to strip  
the head of the screw and making sure that the  
wire is firmly gripped by the set screw.  
The 1000/1 employs a differential-balanced  
input topology that provides the user with a high  
degree of input flexibility while retaining superior  
noise rejection.This type of circuit also allows the  
1000/1 to accept high-voltage inputs from factory  
source unit outputs without excessive distortion  
or noise problems.  
window. If you are using an aftermarket source  
unit, with conventional preamp-level outputs, this  
is most likely the position that you will use.  
The “High” position on the “InputVoltage”  
switch selects an input sensitivity range between  
800mV and 8V. This is useful for certain high-  
output preamp level signals as well as speaker-level  
output from source units and small amplifiers.To  
use speaker-level sources, splice the speaker output  
wires of the source unit or small amplifier onto a  
pair of RCA cables or plugs.  
Crossovers are groups of individual electronic filters  
which allow only certain frequency ranges to pass  
through them by attenuating frequencies outside  
the selected range.These filters allow the user to  
specify what frequency range will be sent out of  
each channel section of the amplifier.This, in turn,  
allows each speaker system to only reproduce a  
range of frequencies it is well-suited for, resulting in  
reduced distortion and improved fidelity.  
AMPLIFIER LOW-PASS FILTER  
Low/High  
The 1000/1 employs a sophisticated, state-variable,  
low-pass active filter for its internal channel.This  
feature is designed to attenuate frequencies above its  
filter frequency, so that the system's subwoofers do  
not reproduce any audible midrange content.  
IMPORTANT  
!
The output of the amplifier will decrease for a  
given input voltage when the “Input Range” switch  
is placed in the “High” position. Conversely, the  
output will be higher with the switch in the “Low”  
position.While this may sound counter-intuitive, it is  
consistent with the descriptions above.  
3) Input Sensitivity Adjustment: Located next to  
the “InputVoltage” switch, in the “Amplifier Input  
Section”, is a rotary control labeled “Input Sens..  
Once the appropriate “InputVoltage” range has  
been selected, this rotary control can be used to  
match the source unit's output voltage to the input  
stage of the amplifier for maximum clean output.  
Rotating the control clockwise will result in higher  
sensitivity (louder for a given input voltage).  
Rotating the control counter-clockwise will result in  
lower sensitivity (quieter for a given input voltage).  
To properly set the amplifier for maximum clean  
output, please refer to Appendix B (page 14) in this  
manual.After using this procedure, you can then  
adjust the level of the amplifier by adjusting the  
input sensitivity downward, if the amplifier requires  
attenuation to achieve the desired system balance.  
Do not increase the “Input Sens.setting for  
any amplifier in the system beyond the maximum  
level established during the procedure outlined  
in Appendix B (page 14). Doing so will result in  
audible distortion and possible speaker damage.  
1) Input Connections: A standard left/right  
pair of RCA type jacks is used for input on  
the 1000/1.You may run a stereo or a mono  
signal into the inputs of the amplifier.The  
amplifier's input section automatically sums  
stereo signals to mono for the internal amplifier  
section and for the “LP” “Filter Mode” of the  
“Preamp Output” section.  
IMPORTANT  
!
1) Filter Operation:The low-pass filter in the  
1000/1 is fully variable between 40 Hz and 200 Hz  
via the “Filter Freq.control knob and features the  
ability to select between a moderate “12dB” per  
octave or a steep “24dB” per octave slope via the  
“Mode/Slope” switch.  
Depending on the subwoofer system and the  
vehicle, different slopes may be required to produce  
a smooth transition to the mid-bass speakers in the  
system. Experiment to find the slope which best  
matches the acoustic requirements of your system.  
Hint: A trunk mounted sub whose output has to  
"fight" through a rear deck or a back seat often  
benefits from the 12 dB/octave slope which lets  
more upper bass content pass through.A sub that  
fires directly into the listening environment is more  
likely to benefit from a 24 dB/octave slope.  
If you plan to use the “Preamp Output” of the  
1000/1 to feed a stereo amplifier, you must connect  
a stereo signal to the input of the amplifier. A mono  
signal into the amplifier will result in a mono signal  
out of the preamp output. (It's a great amplifier, but  
it doesn't do magic).  
The amplifier will operate with only one input  
connection (left or right), but will require an  
increase in input sensitivity to overcome the loss  
of signal. If a mono input signal is to be run, we  
recommend that you use a “Y-adaptor” to split the  
mono signal into both inputs of the amplifier.  
2) InputVoltage Range: A wide range of signal  
input voltages can be accommodated by the  
1000/1's input section (200mV – 8V).This wide  
range is split up into two sub-ranges, accessible via  
switches located in the “Amplifier Input Section”  
of the amplifier.  
The “Low” position on the “InputVoltage”  
switch selects an input sensitivity range between  
200mV and 2V. This means that the “Input Sens.”  
rotary control will operate within that voltage  
6
JL AUDIO 1000/1  
JL AUDIO 1000/1  
7
 
PREAMP OUTPUT SECTION  
The 1000/1 incorporates a flexible preamp  
output section, designed to make multiple amplifier  
systems easy to set up.  
The Preamp output can be configured in three  
different “Output Modes”:  
The above hint is not “set-in-stone”…  
This is completely independent of the amplifier’s  
internal filter and allows the user to match, stagger  
or overlap the subwoofer low-pass filter frequency  
of the amplifier crossover with the output filter’s  
frequency for precise control and optimized  
midbass performance.  
If you would like to select the filter frequency  
with a higher level of precision, consult  
Appendix A: Chart A-2 (page 12) of this manual.  
If you would like to select the infrasonic filter  
frequency with a higher level of precision, consult  
Appendix A: Chart A-3 (page 13) of this manual.  
The infrasonic filter can be completely defeated  
by selecting the “Off” position on the “Mode”  
switch.This bypasses all signal from flowing  
through the circuit.  
2) Parametric Bass Equalizer: The parametric  
equalizer allows the used to select the center  
frequency of the boost band as well as the  
bandwidth (“Q”) of the boost band.  
You should always listen to the system carefully to  
determine the best choice as vehicle acoustics and  
other factors play a big role in choosing the most  
appropriate filter slope.  
2) Precise Frequency Selection:The filter  
frequency markings on the front panel of the  
amplifier are for reference purposes and are  
generally accurate to within 1/3 octave or better.  
If you would like to select the filter frequency with  
a higher level of precision, consult Appendix A:  
Chart A-1 (page 12) of this manual.This chart  
gives you a more accurate frequency for each of  
the forty detented positions of the frequency  
selection control.This method can be very useful if  
the amplifier is mounted in a location where you  
can’t see the front panel markings easily.  
3) Defeating the Amplifier Filter: The Low-  
Pass filter can also be defeated completely, by  
switching the “Mode/Slope” switch to the “Off”  
position.This is useful if you are using an external  
active crossover in the system. Keep in mind that  
turning the internal crossover off also defeats the  
“Advanced Bass Control” section processing  
(see page 9 for details).With the internal  
crossover turned off, the 1000/1’s upper  
CAUTION  
!!  
The “Q" control selects the bandwidth of the  
boost around the center frequency. Lower numbers  
pertain to wider bandwidths while higher number  
pertain to narrower bandwidths.  
The signal level of the “Preamp Output” is  
affected by the setting of the “InputVoltage Range”  
switch (of the input section chosen by the  
“Signal From” switch). See Appendix B (page 14)  
for details on “InputVoltage” settings. All “slave”  
amplifiers should get this switch set to “Low”.  
See Appendix C (page 16) for details.  
1) “Full-Range”:This is a pass-through mode  
for the preamp output, delivering the same signal  
that is being fed to the “Amplifier Input Section”  
(If the input signal is full-range, the preamp output  
will be full-range).This signal is not affected by the  
“Advanced Bass Control” processing selected  
for the amplifier.  
2) “Amp Filter”: The preamp output delivers  
the same signal that is feeding the 1000/1’s  
amplifier section, including all the processing  
induced by the “Amp LP Filter” and “Advanced  
Bass Control” sections. This is primarily used for  
running additional 1000/1’s in a “Slave”  
The “Center Freq.control selects the center  
frequency of the boost bandwidth within a range of  
20 - 80 Hz. If you would like to select the filter  
frequency with a higher level of precision, consult  
Appendix A: Chart A-4 (page 13) of this manual.  
The “Boost” control determines how much  
boost (in dB) you are adding to the bass signal.  
A range of 0 - 15dB of boost is available.  
The “Remote Bass Port” allows the connection  
of an optional remote boost knob (the RBC-1)  
that can be mounted in the front of the vehicle.  
This optional control takes the place of the  
“Boost” knob on the amplifier when connected  
and bypasses the “Boost” control on the amplifier.  
ADVANCED BASS CONTROL SECTION  
The 1000/1 includes a versitile bass processing  
section consisting of two primary components: a  
fully variable, 24 dB per octave infrasonic filter and a  
parametric, single-band equalizer.  
frequency response limit is 250 Hz, due to its  
bass-specific Class D design.  
configuration from the “Master” amplifier. For  
detailed information on Master/Slave  
configurations, see Appendix C (page 16). If the  
“Output Mode” switch is in the “Amp Filter”  
position and the “Amp LP Filter” switch is in the  
“Off” position, there will be no output from the  
preamp output jacks.The independent output filter  
controls (“Filter Slope”, “Filter Freq” and “Filter  
Mode”) are inactive in “Amp Filter” mode.  
3) “Out Filter”:The preamp output is filtered by  
a fully variable, active filter incorporated into the  
output section and is not affected by the bass  
control processing selected for the amplifier.  
In “Out Filter” mode, the user can select:  
a) High-pass (“HP”) or low-pass (“LP”) filtering by  
way of the “Filter Mode” switch.  
IMPORTANT  
!
The “Advanced Bass Control” section will only  
operate when the amplifier's filter is activated with  
the “Amp LP Filter” switch in the “12dB” or  
“24dB” position. It will not work with this switch in  
the “Off” position.This is to prevent cascading the  
processing of multiple amplifiers when configured  
in a master/slave arrangement as shown in  
Appendix C (page 16). If you are using an external  
active crossover and would like to use the  
“Advanced Bass Control” features, set the  
“Amp LP Filter” switch on “12dB” and rotate the  
frequency selection knob fully clockwise to the  
“200 Hz” position.This will activate the “LF Boost”  
and “Infrasonic Filter” controls without significantly  
affecting the crossover point selected by the  
external active crossover.  
1) “Infrasonic Filter”:The infrasonic filter is a  
24 dB/octave high-pass filter, with a fully variable  
cutoff frequency between 15 - 60 Hz.When set at  
frequencies lower than 30 Hz, it conserves amplifier  
power without audibly affecting the quality of the  
sub-bass output. If set at frequencies higher that  
30 Hz, there will be an audible effect, but one which  
may be desirable for SPL competition purposes or  
curve shaping of a bottom-heavy system.  
b) 12 dB/octave or 24 dB/ octave filter slope by way  
of the “Filter Slope” switch.  
c) A filter cutoff frequency between 40 - 200 Hz for  
the preamp output signal by way of the “Filter  
Control” switch.  
With ported enclosures, the use of the  
infrasonic filter is highly recommended to protect  
the speaker(s) from excessive excursion below  
box tuning.With sealed enclosures, the use of the  
filter is less necessary, but can still help protect the  
speaker system.  
8
JL AUDIO 1000/1  
JL AUDIO 1000/1  
9
 
connections.This is to facilitate multiple speaker  
wiring.The two positive and two negative  
connections are connected in parallel inside the  
amplifier. Connecting two speakers, each to one set  
of positive and negative terminals, will result in a  
parallel speaker connection. If only connecting one  
pair of speaker wires, it is not necessary to use  
both sets of connections.  
Do not chassis ground any speakers connected  
to this or any other JL Audio amplifier. Doing so will  
cause the amplifier to go into protection and mute  
the output.  
performance in your system, listening in particular  
to the mid-bass smoothness and impact to make  
your determination.  
the amplifier power connections may minimize  
short-duration voltage dips in systems that are  
having this problem.  
Keep in mind that any large amplifier, like the  
1000/1, places a very heavy demand on a vehicle’s  
charging system when operated at its limits.Vehicles  
with weak charging systems may need to be  
serviced and/or upgraded to provide ample current  
to a system including a 1000/1.  
STATUS INDICATOR LIGHTS /  
PROTECTION CIRCUITRY  
There are three status indicator lights on the top  
of the amplifier. These are as follows:  
1) “Power” (Green): lights to indicate that the  
amplifier is turned on and operating normally.  
2) “Thermal” (Red): lights to indicate that the  
amplifier has exceeded its safe operating  
SUBWOOFER OUTPUT  
The 1000/1 employs JL Audio's exclusive  
Regulated, Intelligent Power Supply (R.I.P.S.) design.  
This sophisticated power supply allows the amplifier  
to produce its optimum power (1000 watts x 1)  
over a wide range of speaker impedances.  
Unlike conventional amplifiers that require a  
specific impedance to produce optimum power, the  
R.I.P.S.-equipped 1000/1 gives you the freedom to  
use a variety of subwoofer configurations that  
achieve final nominal impedances between  
1.5 – 4(without sacrificing power output or  
sound quality).  
The operation of the R.I.P.S. circuitry is entirely  
automatic and adjusts itself every time the amplifier  
is turned on according to the lowest impedance  
present at the speaker load.There are no user  
controls to configure.The system operates through  
multiple stages of impedance optimization, choosing  
the stage most appropriate to the actual impedance  
of the speaker(s) you connect to it.  
For information on troubleshooting this  
amplifier, refer to Appendix D (page 18).  
The 1000/1's speaker connectors are designed  
to accept 12 AWG – 8 AWG wire.  
temperature, putting the amplifier into a self-  
protection mode, which reduces the power output  
of the amplifier. The red light will shut off and the  
amplifier will return to normal, full-power operating  
mode if the heat sink temperature drops back to a  
safe level.  
3) “Low ” (Amber): lights to indicate that the  
impedance of the speaker load connected to the  
amplifier is lower than the optimum load impedance  
range for the amplifier.When this light is on, a  
protection circuit engages and reduces the power  
output of the amplifier.The amber indicator will also  
light when a short-circuit is detected in the speaker  
wiring (this can be a short between the positive and  
negative speaker wires or between either speaker  
wire and the vehicle chassis).  
4) “LowV” (Blue): lights to indicate any dip in  
supply voltage below 8 volts.The blue LED will  
remain lit longer than the dip duration to better  
alert the user to the problem. This will be  
accompanied by a shutdown of the amplifier  
(green LED will shut off) and a total loss of  
output. Once the voltage rises above 9 volts,  
the amplifier will turn itself on. Because voltage  
dips occur in rapid succession, the typical behavior  
will be a cycling of the amplifier on and off,  
accompanied by flashing of the “LowVblue LED.  
If this is happening in your system, you will need to  
investigate the cause of the voltage problem.This  
could be a bad ground on the amplifier, battery or  
alternator OR a faulty battery/charging system OR  
a problem with a fuse holder or wire connection.  
If you are unsure as to the cause of the problem,  
please consult your JLAudiodealer or a qualified  
automotive electrical specialist.  
SERVICINGYOUR JL AUDIO AMPLIFIER  
If your amplifier fails or malfunctions, please  
return it to your authorized JL Audio dealer so  
that it may be sent in to JL Audio for service.  
There are no user serviceable parts or fuses  
inside the amplifier.The unique nature of the  
circuitry in the JL Audio amplifiers requires  
specifically trained service personnel. Do not  
attempt to service the amplifier yourself or  
through unauthorized repair facilities.This will not  
only void the warranty, but may result in the  
creation of more problems within the amplifier.  
To connect the speaker wires to the amplifier,  
first back out the set screws on the top of the  
amplifier, using the supplied 2.5 mm hex wrench.  
Strip 1/2 inch (12 mm) of insulation from each  
wire and insert the bare wire end into the  
receptacles on the front panel of the amplifier,  
seating them firmly so that no bare wire is  
exposed.While holding each wire in place, tighten  
each set screw firmly, taking care not to strip the  
head of the screw and making sure that the wire  
is firmly gripped by the set screw.  
If you have any questions about the installation or  
setup of the amplifier not covered in  
this manual, please contact your dealer or the  
JL AUDIO Technical Department for assistance:  
(954) 443-1100  
IMPORTANT  
!
Do NOT attempt to “bridge” two 1000/1’s or  
combine their output to a single load in any  
manner. Doing so will damage the amplifier(s).  
IMPORTANT  
!
9:00 AM – 5:30 PM Eastern Time,  
Monday – Friday  
IMPORTANT  
!
If you connect a load higher than 4nominal  
to the 1000/1, power will drop by half with every  
doubling of impedance above 4. If you connect a  
load lower than 1.5nominal to the 1000/1, the  
amplifier protection circuitry activates a “safe”  
mode which reduces amplifier power to protect  
the circuitry from failure (the yellow LED on the  
top of the amplifier will light to indicate that this  
has happened). See page 11 for details.  
Before reconnecting the battery ground and  
turning the system on, verify that all control  
settings on the amplifier are set according to the  
needs of the system.  
OUTPUT POLARITY SWITCH  
Depending on the distance relationship of the  
mid-bass speakers and the subwoofers in a  
system, it can be desirable to reverse the polarity  
of the subwoofer system in order to produce a  
better transition between subwoofer and mid-  
bass speaker output.The “Output Polarity” switch  
allows you to peform this polarity inversion  
without removing any wires. Simply flip the switch  
from the “Normal” to the “Reversed” position.  
Experiment with this switch to determine which  
polarity produces the best overall bass  
IMPORTANT  
!
Speaker loads below 1.5nominal are not  
recommended and may cause the amplifier output  
to distort excessively.  
Speaker connections to the 1000/1 are  
straightforward and take place at the far right of  
the front panel.You will notice that there are two  
“+” positive connections and two “–” negative  
In marginal situations, a 1.0 Farad (or larger)  
rapid-discharge capacitor connected in parallel to  
10  
JL AUDIO 1000/1  
JL AUDIO 1000/1  
11  
 
APPENDIX A:  
Precise Frequency Selection  
CHART A-1  
AMPLIFIER LOW-PASS FILTER  
CHART A-2  
PREAMP AMP FILTER  
CHART A-3  
INFRASONIC FILTER  
CHART A-4  
EQ CENTER FREQUENCY  
Detent  
Number  
Panel  
Marking  
Actual  
Freq.  
Detent  
Number  
Panel  
Marking  
Actual  
Freq.  
Detent  
Number  
Panel  
Marking  
Actual  
Freq.  
Detent  
Number  
Panel  
Marking  
Actual  
Freq.  
Full counter-clockwise: 42  
01 . . . . . . . . . . . . . . . . . . . . . . .42  
02 . . . . . . . . . . . . . . . . . . . . . . . .42  
03 . . . . . . . . . . . . . . . . . . . . . . . .42  
04 . . . . . . . . .“40” . . . . . . . . .42  
05 . . . . . . . . . . . . . . . . . . . . . . . .43  
06 . . . . . . . . . . . . . . . . . . . . . . . .44  
07 . . . . . . . . . . . . . . . . . . . . . . . .46  
08 . . . . . . . . .“45” . . . . . . . . .47  
09 . . . . . . . . . . . . . . . . . . . . . . . .49  
10 . . . . . . . . . . . . . . . . . . . . . . . .50  
11 . . . . . . . . . . . . . . . . . . . . . . . .52  
12 . . . . . . . . . . . . . . . . . . . . . . . .53  
13 . . . . . . . . . . . . . . . . . . . . . . . .55  
14 . . . . . . . . .“55” . . . . . . . . .57  
15 . . . . . . . . . . . . . . . . . . . . . . . .58  
16 . . . . . . . . . . . . . . . . . . . . . . . .60  
17 . . . . . . . . . . . . . . . . . . . . . . . .63  
18 . . . . . . . . . . . . . . . . . . . . . . . .65  
19 . . . . . . . . .“65” . . . . . . . . .67  
20 . . . . . . . . . . . . . . . . . . . . . . . .70  
21 . . . . . . . . . . . . . . . . . . . . . . . .73  
22 . . . . . . . . . . . . . . . . . . . . . . . .76  
23 . . . . . . . . . . . . . . . . . . . . . . . .79  
24 . . . . . . . . .“80” . . . . . . . . .83  
25 . . . . . . . . . . . . . . . . . . . . . . . .87  
26 . . . . . . . . . . . . . . . . . . . . . . . .92  
27 . . . . . . . . . . . . . . . . . . . . . . . .96  
28 . . . . . . . . . . . . . . . . . . . . . . .102  
29 . . . . . . . . .“100” . . . . . . . .108  
30 . . . . . . . . . . . . . . . . . . . . . . .114  
31 . . . . . . . . . . . . . . . . . . . . . . .122  
32 . . . . . . . . . . . . . . . . . . . . . . .131  
33 . . . . . . . . . . . . . . . . . . . . . . .143  
34 . . . . . . . . . . . . . . . . . . . . . . .157  
35 . . . . . . . . . . . . . . . . . . . . . . .184  
36 . . . . . . . . .“200” . . . . . . . .193  
37 . . . . . . . . . . . . . . . . . . . . . . .198  
38 . . . . . . . . . . . . . . . . . . . . . . .198  
39 . . . . . . . . . . . . . . . . . . . . . . .198  
Full-clockwise : 198  
Full counter-clockwise: 41  
01 . . . . . . . . . . . . . . . . . . . . . . .41  
02 . . . . . . . . . . . . . . . . . . . . . . . .41  
03 . . . . . . . . . . . . . . . . . . . . . . . .41  
04 . . . . . . . . .“40” . . . . . . . . .42  
05 . . . . . . . . . . . . . . . . . . . . . . . .42  
06 . . . . . . . . . . . . . . . . . . . . . . . .43  
07 . . . . . . . . . . . . . . . . . . . . . . . .44  
08 . . . . . . . . .“45” . . . . . . . . .45  
09 . . . . . . . . . . . . . . . . . . . . . . . .47  
10 . . . . . . . . . . . . . . . . . . . . . . . .48  
11 . . . . . . . . . . . . . . . . . . . . . . . .49  
12 . . . . . . . . . . . . . . . . . . . . . . . .51  
13 . . . . . . . . . . . . . . . . . . . . . . . .53  
14 . . . . . . . . .“55” . . . . . . . . .54  
15 . . . . . . . . . . . . . . . . . . . . . . . .56  
16 . . . . . . . . . . . . . . . . . . . . . . . .58  
17 . . . . . . . . . . . . . . . . . . . . . . . .60  
18 . . . . . . . . . . . . . . . . . . . . . . . .62  
19 . . . . . . . . .“65” . . . . . . . . .64  
20 . . . . . . . . . . . . . . . . . . . . . . . .67  
21 . . . . . . . . . . . . . . . . . . . . . . . .69  
22 . . . . . . . . . . . . . . . . . . . . . . . .72  
23 . . . . . . . . . . . . . . . . . . . . . . . .75  
24 . . . . . . . . .“80” . . . . . . . . .78  
25 . . . . . . . . . . . . . . . . . . . . . . . .82  
26 . . . . . . . . . . . . . . . . . . . . . . . .86  
27 . . . . . . . . . . . . . . . . . . . . . . . .90  
28 . . . . . . . . . . . . . . . . . . . . . . . .95  
29 . . . . . . . . .“100” . . . . . . . .100  
30 . . . . . . . . . . . . . . . . . . . . . . .107  
31 . . . . . . . . . . . . . . . . . . . . . . .113  
32 . . . . . . . . . . . . . . . . . . . . . . .122  
33 . . . . . . . . . . . . . . . . . . . . . . .131  
34 . . . . . . . . . . . . . . . . . . . . . . .143  
35 . . . . . . . . . . . . . . . . . . . . . . .156  
36 . . . . . . . . .“200” . . . . . . . .169  
37 . . . . . . . . . . . . . . . . . . . . . . .186  
38 . . . . . . . . . . . . . . . . . . . . . . .192  
39 . . . . . . . . . . . . . . . . . . . . . . .197  
Full-clockwise : 197  
Full counter-clockwise: 14  
01 . . . . . . . . . . . . . . . . . . . . . . .14  
02 . . . . . . . . . . . . . . . . . . . . . . . .14  
03 . . . . . . . . . . . . . . . . . . . . . . . .14  
04 . . . . . . . . .“15” . . . . . . . . .14  
05 . . . . . . . . . . . . . . . . . . . . . . . .15  
06 . . . . . . . . . . . . . . . . . . . . . . . .15  
07 . . . . . . . . . . . . . . . . . . . . . . . .16  
08 . . . . . . . . .“18” . . . . . . . . .17  
09 . . . . . . . . . . . . . . . . . . . . . . . .17  
10 . . . . . . . . . . . . . . . . . . . . . . . .18  
11 . . . . . . . . . . . . . . . . . . . . . . . .19  
12 . . . . . . . . . . . . . . . . . . . . . . . .20  
13 . . . . . . . . . . . . . . . . . . . . . . . .20  
14 . . . . . . . . .“25” . . . . . . . . .21  
15 . . . . . . . . . . . . . . . . . . . . . . . .22  
16 . . . . . . . . . . . . . . . . . . . . . . . .24  
17 . . . . . . . . . . . . . . . . . . . . . . . .25  
18 . . . . . . . . . . . . . . . . . . . . . . . .27  
19 . . . . . . . . . . . . . . . . . . . . . . . .28  
20 . . . . . . . . .“30” . . . . . . . . .30  
21 . . . . . . . . . . . . . . . . . . . . . . . .33  
22 . . . . . . . . . . . . . . . . . . . . . . . .35  
23 . . . . . . . . . . . . . . . . . . . . . . . .39  
24 . . . . . . . . . . . . . . . . . . . . . . . .42  
25 . . . . . . . . .“40” . . . . . . . . .47  
26 . . . . . . . . . . . . . . . . . . . . . . . .50  
27 . . . . . . . . . . . . . . . . . . . . . . . .51  
28 . . . . . . . . . . . . . . . . . . . . . . . .54  
29 . . . . . . . . . . . . . . . . . . . . . . . .56  
30 . . . . . . . . . . . . . . . . . . . . . . . .56  
31 . . . . . . . . .“50” . . . . . . . . .57  
32 . . . . . . . . . . . . . . . . . . . . . . . .58  
33 . . . . . . . . . . . . . . . . . . . . . . . .58  
34 . . . . . . . . . . . . . . . . . . . . . . . .58  
35 . . . . . . . . . . . . . . . . . . . . . . . .59  
36 . . . . . . . . .“60” . . . . . . . . .60  
37 . . . . . . . . . . . . . . . . . . . . . . . .61  
38 . . . . . . . . . . . . . . . . . . . . . . . .61  
39 . . . . . . . . . . . . . . . . . . . . . . . .61  
Full-clockwise : 61  
Full counter-clockwise: 22  
01 . . . . . . . . . . . . . . . . . . . . . . .22  
02 . . . . . . . . . . . . . . . . . . . . . . . .22  
03 . . . . . . . . . . . . . . . . . . . . . . . .22  
04 . . . . . . . . .“20” . . . . . . . . .22  
05 . . . . . . . . . . . . . . . . . . . . . . . .22  
06 . . . . . . . . . . . . . . . . . . . . . . . .24  
07 . . . . . . . . . . . . . . . . . . . . . . . .24  
08 . . . . . . . . .“25” . . . . . . . . .25  
09 . . . . . . . . . . . . . . . . . . . . . . . .26  
10 . . . . . . . . . . . . . . . . . . . . . . . .27  
11 . . . . . . . . . . . . . . . . . . . . . . . .28  
12 . . . . . . . . . . . . . . . . . . . . . . . .30  
13 . . . . . . . . . . . . . . . . . . . . . . . .31  
14 . . . . . . . . .“30” . . . . . . . . .32  
15 . . . . . . . . . . . . . . . . . . . . . . . .34  
16 . . . . . . . . . . . . . . . . . . . . . . . .35  
17 . . . . . . . . . . . . . . . . . . . . . . . .38  
18 . . . . . . . . . . . . . . . . . . . . . . . .40  
19 . . . . . . . . .“40” . . . . . . . . .42  
20 . . . . . . . . . . . . . . . . . . . . . . . .45  
21 . . . . . . . . . . . . . . . . . . . . . . . .48  
22 . . . . . . . . . . . . . . . . . . . . . . . .51  
23 . . . . . . . . . . . . . . . . . . . . . . . .56  
24 . . . . . . . . .“60” . . . . . . . . .61  
25 . . . . . . . . . . . . . . . . . . . . . . . .67  
26 . . . . . . . . . . . . . . . . . . . . . . . .69  
27 . . . . . . . . . . . . . . . . . . . . . . . .72  
28 . . . . . . . . . . . . . . . . . . . . . . . .75  
29 . . . . . . . . .“75” . . . . . . . . .76  
30 . . . . . . . . . . . . . . . . . . . . . . . .77  
31 . . . . . . . . . . . . . . . . . . . . . . . .77  
32 . . . . . . . . . . . . . . . . . . . . . . . .78  
33 . . . . . . . . . . . . . . . . . . . . . . . .79  
34 . . . . . . . . . . . . . . . . . . . . . . . .80  
35 . . . . . . . . . . . . . . . . . . . . . . . .81  
36 . . . . . . . . .“80” . . . . . . . . .81  
37 . . . . . . . . . . . . . . . . . . . . . . . .81  
38 . . . . . . . . . . . . . . . . . . . . . . . .81  
39 . . . . . . . . . . . . . . . . . . . . . . . .81  
Full-clockwise : 81  
12  
JL AUDIO 1000/1  
JL AUDIO 1000/1  
13  
 
APPENDIX B:  
Input Sensitivity Level Setting  
JLAudio amplifiers utilizing the Regulated  
Intelligent Power Supply (R.I.P.S.) allow delivery of  
their rated power when connected to any load  
impedance from 1.5 - 4per channel and when  
connected to a charging system with any voltage  
from 11 - 14.5V. This design is beneficial for many  
reasons. One of these reasons is ease of setup.  
Because each JLAudio amplifier will always deliver  
the same amount of power within its operational  
range of impedances and supply voltages, the  
maximum, unclipped output is very predictable.  
This makes setting the gain structure via the input  
sensitivity controls very simple. Following the  
directions below will allow the user to adjust the  
input sensitivity of the amplifier(s) simply and easily  
in just a few minutes using equipment which is  
commonly available in installation bays.  
5) Using the chart below, determine the target  
voltage for input sensitivity adjustment according to  
the nominal impedance of the speaker system  
connected to the amplifier output.  
Nom. Impedance  
Target ACVoltage  
4(or higher)  
63.2V  
54.7V  
44.7V  
38.7V  
3Ω  
2Ω  
1.5Ω  
6)Verify that you have disconnected the  
speakers before proceeding. Play a track with an  
appropriate sine wave (within the frequency range  
to be amplified) at 3/4 source unit volume.  
7) Connect the AC voltmeter to the  
“Subwoofer Output” connectors of the amplifier.  
8) Increase the “Input Sens.control until the  
target voltage is delivered. If multiple subwoofer  
amps are being used, set each one to the same  
exact voltage and you have also level matched  
them. If excessive voltage is read with the control  
at minimum (full counterclockwise), switch the  
“InputVoltage” to “High” and re-adjust.  
Necessary Equipment  
• Digital ACVoltmeter  
• CD with a sine-wave test tone recorded at 0 dB  
reference level in the frequency range to be  
amplified (ex. 50 Hz for a subwoofer amplifier.  
1 kHz for a midrange application). Do not use  
attenuated test tones (-10 dB, -20 dB, etc.).  
9) Once you have adjusted each amplifier to its  
maximum unclipped output level, reconnect the  
speaker(s).The “Input Sens.can now be adjusted  
downward if the amplifier requires attenuation to  
achieve the desired system balance.  
The Nine-Step Procedure  
1) Disconnect the speaker(s) from the amplifier’s  
“Subwoofer Output”connectors (you only need to  
remove the negative or positive speaker wire).  
2)Turn “Offall processing on the source unit  
and amplifier (bass/treble, loudness, EQ, etc.).  
3) Switch the “InputVoltage” to “Low” and  
turn the “Input Sens.control on the amplifier all  
the way down.  
IMPORTANT  
!
Do not increase any “Input Sens.setting in  
the system beyond the maximum level established  
during this procedure. Doing so will result in  
audible distortion and possible speaker damage.  
4) Set the source unit volume to 3/4 of full  
volume. If the amplifier is being driven by a source  
unit’s dedicated subwoofer output, also adjust the  
source unit’s subwoofer level control to 3/4 of  
maximum output.This will allow for reasonable gain  
overlap with moderate clipping at full volume.  
14  
JL AUDIO 1000/1  
JL AUDIO 1000/1  
15  
 
APPENDIX C:  
Master/Slave Configurations  
With the flexible on-board crossovers and  
processing incorporated into the 1000/1, it is  
possible to connect multiple 1000/1’s in a  
“Master/Slave” configuration, with each amplifier  
driving its own speaker system but controlled by  
the processing and filtering of only one amplifier.  
This is very useful when driving multiple  
subwoofers with multiple amplifiers.  
To create a Master/Slave configuration, first  
determine which amplifier will be the “Master”  
amplifier and connect the main input signal to that  
amplifier (from the source unit or from an  
outboard processor).This amplifier’s Amp LP  
Filtersection and Advanced Bass Control”  
features will process the signal for the “Slave”  
amplifier or amplifiers.  
2) Connect an RCA cable from the “Master”  
amplifier’s preamp outputs to the main input of the  
first “Slave” amplifier. Set the “Slave” amplifier’s  
Amp LP Filterto the Offposition.This will  
defeat the LP filter and the bass processing of this  
“Slave Amplifier”.  
3)The input sensitivity of the two amplifiers  
needs to be adjusted independently.To properly  
calibrate the amplifiers for maximum, identical, clean  
output, please refer to Appendix B (page 14).  
After using this procedure, you can then adjust the  
level of the amplifiers by adjusting the input  
sensitivities downward, if the amplifiers require  
attenuation to achieve the desired system balance.  
If the input sensitivities are adjusted, the amplifiers  
must be recalibrated to ensure identical power  
output levels.  
out of the preamp outputs of the amplifier are  
compatible with the “Low” setting on the  
“Input Range” control.  
The “Signal Sensing” turn-on feature will not  
work on “slave” amplifiers, but “slave” amplifiers  
can be turned on and off by a “master” amplifier  
operating in signal sensing turn-on mode.  
Simply connect the “master” amplifier’s  
first “Slave” amplifier, set the second “Slave”  
amplifier’s “Amp LP Filter” to the “Off” position.  
Then, calibrate the third amplifier’s “Input Range”  
and “Input Sens.controls in the same manner as  
you did for the second amplifier.  
Additional amplifiers may be added to this  
“Master/Slave” configuration following the same  
procedure as in step 4.  
“Remote” connection, to the “slave” amplifier(s)  
“Remote” connection(s).  
Once you match the input sensitivities of all the  
amplifiers, you can use the “Master” amplifier’s  
“Amp LP Filter” and “Advanced Bass Control”  
features to control the “Slave” amplifier(s). If the  
remote bass control (RBC-1) is used, it need only  
be connected to the “Master” amplifier to control  
all the amplifiers in the Master/Slave chain.  
Below is a diagram showing a Master/Slave  
configuration with one “Master” (top amplifier)  
and two “Slave” amplifiers. Switches and controls  
that are defeated in the “Slave” amplifiers are  
printed in gray.  
Do not increase the “Input Sens.” setting for any  
amplifier in the system beyond the maximum level  
established during the procedure outlined in  
Appendix B (page 14). Doing so will result in  
audible distortion and possible speaker damage.  
4) If you would like to run a third amplifier in  
“Slave” configuration, select the “Full-Range”  
position on the “Output Mode” switch of the first  
“Slave” amplifier.Then, connect an RCA cable  
from the first “Slave” amplifier’s preamp outputs to  
the second “Slave” amplifier. As you did with the  
Here is the procedure for implementing a  
“Master/Slave” configuration:  
Please note that the Input Rangeswitch on  
all “slave” amplifiers needs to be set to Low,  
even if the “master” amplifier is high voltage and  
its switch is set to High. All signals passed  
1) Set the “Master” amplifier’s Output Mode”  
switch to the center Amp Filterposition.This will  
send a parallel, mono-summed signal from the  
“Master” amplifier’s Amp LP Filtersection to its  
preamp outputs.  
MASTER:  
+12VDC  
+12VDC  
+12VDC  
Ground Remote  
Ground Remote  
Ground Remote  
The Master amplifiers  
“Advanced Bass Control”  
section is active and affects  
Low/High  
all three amplifiers equally.  
IMPORTANT  
!
Make sure that the "Output Polarity"  
switches are in the same position for  
all the amplifiers in a master/slave chain.  
Connect Master 1000/1 Input to Signal Source  
Connect Master 1000/1 Preamp Output to Slave A 1000/1 Input  
Set all amps in chain to "Normal" OR  
Set all amps in chain to "Reversed"  
SLAVE (A):  
This Slave amplifiers  
“Advanced Bass Control”  
section and AMP LP Filter are  
inactive, but the Full-Range  
(pass-through) feature of its  
“Preamp Output” feeds the  
input of the next Slave amplifier.  
Low/High  
Connect Slave A 1000/1 Preamp Output to Slave B 1000/1 Input  
SLAVE (B):  
The last Slave amplifiers  
“Advanced Bass Control”  
section,AMP LP Filter and  
Low/High  
“Preamp Output” are inactive.  
16  
JL AUDIO 1000/1  
JL AUDIO 1000/1  
17  
 
APPENDIX D: TROUBLE SHOOTING  
“MY AMPLIFIER DOESN’TTURN ON”  
“MY AMPLIFIER SHUTS OFF ONCE IN AWHILE, USUALLY AT HIGHERVOLUMES”  
Check your voltage source and grounding point.The R.I.P.S. power  
supply is rated to operate with source voltages between  
Check to make sure there is +12V at the Remoteconnection of  
the amplifier. In some cases, the turn-on lead from the source  
unit is insufficient to turn on multiple devices and the use of a  
relay is required. To test for this problem, jump the +12V”  
wire to the Remoteterminal to see if the amplifier turns on.  
If this does not work, proceed to the next step.  
11 - 14.5V. Shutdown problems at higher levels can occur  
when the charging system voltage drops below 10-volts.These  
dips can be of very short duration making them extremely  
difficult to detect with a common DC voltmeter.To ensure  
proper voltage, inspect all wiring and termination points. It is  
also a good idea to improve the vehicle’s factory ground wire  
and termination point. Grounding problems are the leading  
cause of mis-diagnosed amplifier failures.  
Check the fuse, not just visually but with a continuity meter. It is  
possible for a fuse to have poor internal connections that  
cannot be found by visual inspection. It is best to take the  
fuse out of the holder for testing. If no problem is found  
with the fuse, inspect the fuse-holder.  
Check the Signal Sensingswitch to make sure it is in the desired  
position. If you are using a remote wire, this switch should be  
in the Offposition. If you are using the signal sensing  
feature, make sure there is a full-range signal being sent to the  
RCA inputs of the amplifier. If you continue to have trouble  
with the signal sensing feature, test the amplifier’s ability to turn  
on by throwing the Signal Sensingswitch to the Off”  
position and jumping the +12Vwire to the Remote”  
terminal. If this turns the amplifier on, check your input signal  
and connections.  
“MY AMPLIFIERTURNS ON, BUTTHERE IS NO OUTPUT”  
Check the input signal using an AC voltmeter to measure the  
voltage from the source unit while an appropriate test tone  
is played through the source unit (disconnect the RCA  
cables from the amplifier prior to this test).The frequency  
used should be in the range that is to amplified by the  
channels being tested (example: 50 Hz for a sub bass  
amplifier channel and 1 kHz for a full-range amplifier  
channel). A steady voltage should be present at the output  
of the RCA cables. If you are receiving a sufficient voltage  
(between 0.2 and 8.0-volts), check to ensure that the  
speaker wires are making a good connection with the metal  
inside the amplifier.The connectors are designed to accept  
up to an 8 AWG wire. If you are using significantly smaller  
wire (14 AWG or smaller), you may have difficulty making  
an adequate connection. In this case, you may find it  
necessary to “fold” the wire over once (or twice!) so as to  
make a solid connection. Make sure to strip the wire to  
allow for a sufficient connection with the input or output  
of the amplifier.  
“I GET A DISTORTED / ATTENUATED SOUND COMING OUT OFTHE SPEAKER(S)”  
Check the speaker wires for a possible short, either between the  
positive and negative or between a speaker lead and the  
vehicle’s chassis ground. If a short is present you will  
experience distorted and/or attenuated output.The  
Low light may also illuminate in this situation. It may be  
helpful to disconnect the speaker wires from the amplifier  
and use a different set of wires connected to a test speaker.  
Check the nominal load impedance to verify that the amplifier is  
driving a load between 1.5 - 4. JLAudio monoblock  
Check the output of the amplifier. Using the procedure explained in  
the previous check item (after plugging the RCA cables back  
into the amplifier) test for output at the speaker outputs of the  
amplifier. Unless you enjoy test tones at high levels, it is a good  
idea to remove the speaker wires from the amplifier while  
doing this. Turn the volume up approximately half way.  
5-volts or more should be measured at the speaker outputs.  
This output level can vary greatly between amplifiers but it  
should not be in the millivolt range with the source unit at half  
volume. If you are reading sufficient voltage, check your speaker  
connections as explained above.  
amplifiers have two +positive connections and two “–”  
negative connections.This is to facilitate multiple speaker wiring.  
The two positive and two negative connections are connected  
in parallel inside the amplifier. Connecting two speakers, each  
to one set of positive and negative terminals, will result in a  
parallel speaker connection. In this case, each of the two loads  
should have a nominal impedance between 3 - 8.  
Check the input signal and input signal cables to make sure signal is  
present at the Amplifier Input Sectionand the cables are  
not pinched or loose. It may be helpful to try a different set of  
cables and/or a different signal source to be sure.  
(continued on next page)  
18  
JL AUDIO 1000/1  
JL AUDIO 1000/1  
19  
 
APPENDIX D: TROUBLE SHOOTING (CONT.)  
APPENDIX E:  
1000/1 Specifications  
“MY AMPLIFIER’S OUTPUT FLUCTUATESWHEN ITAP ON IT OR HIT A BUMP”  
Check the connections to the amplifier. Make sure that the insulation  
for all wires has been stripped back far enough to allow a  
good contact area inside the amplifier terminal.  
GENERAL SPECIFICATIONS:  
Recommended FuseValue: 100A  
Recommended Fuse Type: ANL  
ADVANCED BASS CONTROL SECTION:  
Parametric EQ: Single-band, fully parametric equalizer  
with “Q” adjustment from 0.5 - 4.0, center frequency  
adjustment from 20 - 80 Hz, boost adjustment from  
0 to +15 dB and port for optional remote bass  
boost control (RBC-1), defeatable  
Check the RCA connectors to ensure that both the center pin and  
the outer shield are making good contact with the input jacks  
on the amplifier.  
INPUT SECTION:  
Input Type: Differential-balanced with RCA jack inputs  
Input Range: Switchable from 200mV - 2V RMS to  
800mV - 8V RMS  
Infrasonic Filter: Fully variable, 24 dB/octave Butterworth  
high-pass filter, cutoff frequency adjustable from  
15 - 60 Hz, defeatable  
“HOW DO I PROPERLY SETTHE INPUT SENSITIVITY ON MY AMPLIFIER”  
Please refer to Appendix B (page 14) to set the input sensitivity for  
maximum, unclipped output.  
AMPLIFIER SECTION:  
Amplifier Topology: H-Bridge, Class D Mono  
with impedance optimization and patented  
discrete drive circuitry  
DIMENSIONS: (LxWxH):  
19.7" x 9.25" x 2.36" (500mm x 235mm x 60mm)  
Power Supply: Pulse width modulation-regulated  
switching power supply  
Due to ongoing product development, all specifications are  
subject to change without notice.  
Rated Power: 1000W RMS x 1 @ 1.5 - 4(11 - 14.5V)  
THD at Rated Power: <0.05% @ 4, 50 Hz  
Signal to Noise Ratio: >95 dB referred to rated power  
(A-weighted, 20 Hz - 20 kHz noise bandwidth)  
Frequency Response: 5 - 250 Hz (+0, -3 dB)  
Damping Factor: >500 @ 4/50 Hz, >250 @ 2/50 Hz  
CROSSOVER SECTION:  
Amplifier Low-Pass Filter: State-variable, 12 dB/octave  
Butterworth or 24 dB/octave Linkwitz-Riley with  
continuously variable cutoff frequency selection  
from 40 - 200 Hz, defeatable  
PREAMP OUTPUT:  
2-Channel, with fully independent, state-variable,  
12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley  
filter with continuously variable cutoff frequency selection  
from 40 - 200 Hz, defeatable  
20  
JL AUDIO 1000/1  
JL AUDIO 1000/1  
21  
 
INSTALLATION NOTES:  
Use this diagram to document your amplifiers switch and control positions.  
Low/High  
22  
JL AUDIO 1000/1  
JL AUDIO 1000/1  
23  
 
LIMITEDWARRANTY - AMPLIFIERS (USA)  
JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of ninety  
(90) days from the original date of purchase.The warranty term is extended to two (2) years if installation is  
performed or approved by an authorized JL AUDIO dealer (proof of installation or approval required on  
purchase receipt).  
This warranty is not transferrable and applies only to the original purchaser from an authorized JL AUDIO  
dealer. Should service be necessary under this warranty for any reason due to manufacturing defect or  
malfunction, JL AUDIO will (at its discretion), repair or replace the defective product with new or remanufactured  
product at no charge. Damage caused by the following is not covered under warranty: accident, misuse, abuse,  
product modification or neglect, failure to follow installation instructions, unauthorized repair attempts,  
misrepresentations by the seller.This warranty does not cover incidental or consequential damages and does not  
cover the cost of removing or reinstalling the unit(s). Cosmetic damage due to accident or normal wear and tear  
is not covered under warranty.  
Warranty is void if the product’s serial number has been removed or defaced.  
Any applicable implied warranties are limited in duration to the period of the express warranty as provided  
herein beginning with the date of the original purchase at retail, and no warranties, whether express or implied,  
shall apply to this product thereafter. Some states do not allow limitations on implied warranties, therefore these  
exclusions may not apply to you.This warranty gives you specific legal rights, and you may also have other rights  
which vary from state to state.  
If you need service on your JL AUDIO product:  
All warranty returns should be sent to JL AUDIO ’s Amplifier Service Facility freight-prepaid through an  
authorized JL AUDIO dealer and must be accompanied by proof of purchase (a copy of the original sales receipt).  
Direct returns from consumers or non-authorized dealers will be refused unless specifically authorized by  
JL AUDIO with a valid return authorization number.  
Warranty expiration on products returned without proof of purchase will be determined from the  
manufacturing date code. Coverage may be invalidated as this date is previous to purchase date. Non-defective  
items received will be returned freight-collect. Customer is responsible for shipping charges and insurance in  
sending the product to JL AUDIO. Freight damage on returns is not covered under warranty.  
For Service Information in the U.S.A. please call:  
JL Audio customer service: (954) 443-1100  
during normal business hours (9:00 AM 5:30 PM Eastern Time)  
JL Audio, Inc  
10369 North Commerce Pkwy.  
Miramar, FL 33025  
(do not send product for repair to this address)  
InternationalWarranties:  
Products purchased outside the United States of America are covered only  
by that country’s distributor and not by JL Audio, Inc.  
Patented Class D Amplifier Circuit (U.S. Patent #6,441,685) is Patent-Pending in the following  
countries: Austria, Belgium, Brazil, Canada, China, France, Germany, Indonesia, Italy, Japan, Republic of Korea,  
Mexico, Netherlands, Norway, Russian Federation, Singapore, Sweden, Switzerland, United Kingdom, and all  
other PCT countries.  
JL10001MAN-CH-09-2002  
 

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