JL Audio HX300/1 User manual

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WATER
RESISTANT
Thank you for purchasing a]L Audio amplifier for
your sound system.
Your ampl1jier has been designed and manufactured to exacting
standards in order to ensure years of musical enjoyment. For maximum
performance, we highly recommend that you have
your new amplifier installed by an authorized ]L 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 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 ]L Audio dealer for assistance. If you need further assistance,
please call the ]L Audio Technical Support Department
at [email protected] or call [phone] during business hours.

What's Included
(1) Amplifier
(4) Stainless steel moun t ing screws
(1) Spare 35A fuse
(1) User manual
Product Description
This
is a full-range monoblock amplifier utilizing Class D technology that can be
used
alone or in stereo pairs.
Installation Applications
This
amplifier is designed for operation with 12 volt, negative-ground electrical
systems. Using this
product in systems with positive ground and/or voltages
other than 12V may result in damage to the product and will void the warranty.
This
product is not certified or approved for use in aircraft.
Safety Considerations
·Whenever possible, mount the amplifier in a dry, well-ventilated location
that does not interfere with other factory installed electronic devices. If a dry
enyironment is not available, a location that is not exposed to heavy splashing
may be used.
·While this amplifier is designed to be water-resistant, it should never be
submerged under water or subjected to high-pressure water spray. Do not
install where it will be directly exposed to the elements .
• Do
not mount the amplifier in the engine compartment or in any areas of
extreme heat.
·Securely mount the amplifier so that it does not come loose in the event of
a collision/sudden jolt or as a result of repeated vibrations during normal
operation.
·Check before drilling to make sure that you will not be drilling into an exterior
panel/hull, fuel tank, gas/brake line, wiring harness, or other vital system.
·Do not run system wiring outside or undern e ath the vehicl e/ vessel. This is an
extremely dangerous practice, which can result in severe damage/injury.
• Protect all system wires from sharp edges (metal, fiberglass, etc.) by carefully
routing them, tying them down and using grommets and loom where
appropriate.
·Secure all wiring as needed, using cable ties or wire clamps to protect them
from moving parts and sharp edges.
Installation Procedure/Connections
1. Disconnect the NEGATIVE battery post connection and secure the discon-
nected cable
to prevent accidental reconnection dur i ng in stallation. This is
an essential safety precaution during installation!
2.
Connect the RED power lead to the posi tive(+ 12V) batt ery post. 8 AWG is
the minimum power wire size for this amplifier.
3. An appropr iate fuse at the main power wire(s) to the amplifier(s) is vital for
vehicle/vessel safety. This fuse must be installed with in 18 inches (45 em) of
the positive battery post connection. If this is the only de vice connected to
this main wire, use a 35A fuse. Do not install the fuse un til the power wire
has been securely connected to the amplifier.
4.
Connect the BLACK negative ground lead to a clean, so lid metal ground i ng
point near the amplifier. This can be to metal chassis gro und, if available. If
no metal chassis ground is available, it may be necessary to make this con-
nection to the NEGA T IVE battery post. 8 AWG is the minimum ground wire
size for this amplifier. All ground connections (source unit and amp lifi-
ers) should
be made at the same location.
5. Connect the BLUE remote turn-on lead to the source unit 's positive(+ 12V)
remote turn-on output. If your source un it 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-s witched circuit.
6. Signal Input (Low-Level):Connect the amplifier's RCA i np ut jacks to the
source unit's preamp level output jacks.You may run a stereo or a mono
signal into the inputs of the amplifier .The amplifier's inp ut section auto mat -
ically sumsstereo signals
to mono for the internal am plifier section. When
feeding a single, low-level RCA input connection , use a Y -adaptor splitte r to
split
the mono signal and connect it to both Left and Right RCA inputs .
7. Signal Input (Hi-Level ): If your source unit does not offe r preamp level signal
outputs, you can splice the speaker output wires of the so urce unit onto a
pair of RCA plugs for the input pair or use the JL Audio EC SSpeaker Wire
to RCA adaptor (XB-CLRAIC2- SW). Make sure to observe correct polarity in
making "Hi-Level Input" connections . Fa ilure to do so wi ll result in a loss of
signal
(poor performance).
8.
Connect the speaker output leads to the corresponding speaker wires.
9. Make necessary
adjustments to the filter controls and i npu t sensitivity.
10. With the optional M- RBC-1 Remote Level Control (sold se parately), you can
control the amplifier's output level from the front of the vehicle/vesse l. Con-
nect the M- RBC -1 to the amplifier 's harness- mounted RJ 11 input jack. (Re fer
to Appendix B)
WARNING! Failure to make safe, tight, high-integrity power connec-
tions can result in
fire and extensive damage!

Source
Remote Turn-On
------------- ....
11
11 RBC 1 (Sod Sepc1r ltely
11
l !- II -~([Lf: -·
- - - - - - - - - - _J
Speaker
w
0 0
0 =
Battery I 11
High <or> Low-Level Inputs
(selectable via Input Voltage Switch)
llMMI
Remote Bass Control Jack
Connections
+12V Red Positive(+12V) Power Connection
GND Black Negative (GND) Ground Connection
REM
Blue Positive(+12V) Remote Turn-On Input
SPK+ Lt .Blue Positive(+) Speaker Output
SPK- Lt. Blue/Black
Negative(-) Speaker Output
White RCA Left Channel Signal Input
Red RCA
Right Channel Signal Input
Remote Bass Control Jack RJ 11 Input Jack for M-RBC-1 (sold separately)

Control Panel Settings and Adjustments
The amplifier's settings and controls are located on the bottom panel beneath a
gasketed, protective cover. Remove
the four Phillips head screws from the center
panel
to access the controls and make adjustments. Replace cover when finished
and
mount the amplifier.
Switch I
Input Voltage
1---
Input Sens.
LP Filter
LP Filter
Freq.
Infrasonic
Filter
Bass Boost
Output
Polarity
Bass Boost
(dB)
LP Filter
Freq.(Hz)
Output Polarity @.
~ f7>..
0/180deg. '(0
LP Filter 0• •+ 12
[email protected]
40 400
~
Off I On
InputVoltage
Setting
Low
High
Variable
Off
On
Variable
Variable
Variable
0
180 deg.
~
Low/High
I
Input Sens. Infrasonic
Filter( Hz)
Mode I Function
RCA/Preamp Level Range (250 mV- 4 V)
RCA/Preamp or Speaker Level Range (1 V- 15 V)
Adjusts the input stage of the amplifier channels to
match the source unit's output voltage for maximum
clean output (refer to Appendix A)
Full-Range Operation of Input Signals I
Defeats M-RBC-1 &Infrasonic Filter
Low-Pass: Configures Filter
to Attenuate Frequencies
ABOVE the Selected Filter Frequency
Adjusts
the low-pass filter cutoff frequency,
variable from 40-400
Hz, 24 dB/Octave
Adjusts
the high-pass filter cutoff frequency,
variable from 20-40 Hz,
12 dB/Octave
Boost-Only
Bass Equalizer: Boost range from OdB
(full-counterclockwise) to+ 12dB (full-clockwise),
centered at 43
Hz. (always active)
Normal speaker
polarity
Polarity reversed 180 degrees

Status LED's I Protection Circuitry
There are two status indicator lights on the wiring end panel of the amplifier.
1. "POWER" (Green): Lights to indicate that the amplifier is turned on and
operating normally.
2. "PROTECT" (Red): Lights to indicate the amplifier's protection circuitry
has been activated to prevent product failure due to thermal overload,
over current
or short-circuit to the amplifier's outputs. When this pro-
tection mode is activated, the amplifier will shut down to protect its
circuitry. When
the problem is corrected, the amplifier will return to
normal operation and the "Protect" LED will shut off. Connecting the
speaker outputs to impedances lower than 2 ohms will also cause this
protection mode to activate.
POWER PROTECT
0
POWER I PROTECT I
{Green LED) {Red LED) Status I
Note
ON
OFF Normal Operation
OFF
ON
Thermal Protection Lasts until temp cools to normal
OFF/ON ON/OFF Over Current Green/Red
LEOs alternate for 1 second
OFF ON Short Circuit Possible audible "popping" noise

Rated RMS Power@
14.4V, <1%THD+N
Rated
RMS Power@
12.SV, < 1% THD+N
160W X 1
@4 0
160Wx 1 @4 0
220W X 1@ 3 0 300W X 1@ 2 0
200W X 1@ 3 0 250W X 1 @2 0
Frequency Response I
20Hz-12kHz (+ 0, -1dB), 7Hz-14kHz (+0, -3dB)
S/N Ratio, A-weighted
20kHz noise bandwidth I
85
dB (Referred to rated power), 64 dB (Referred to 1W)
DampingFactor I >150/50Hz@40 , >75/50Hz@20
Input Voltage Range I 250 mV- 4 V (Low) or 750 mV- 15 V (High)
Filter Modes I Low-Pass, defeatable
Filter Freq. Range, Slope I
40-400 Hz, 24 dB/Octave
Detented Filter Freq. 1
40
, 80, 130,400Hz (Calibrated)
Potentiometers
Infrasonic Filter I 20-40Hz, 12 dB/Octave
Bass Boost EQ I 0 to+ 12 dB@ 43Hz
Output Polarity I 0 or 180 degrees
Remote
Bass Controller I M- RBC -1 (sold separately)
Min Power/GNDWire I 8 AWG
Fuse Rating I 35 A
Dimensions I 1.77 in x8.66 in 3.09 in
/45 mm x 220 mm x 78.5 mm
Troubleshooting
How to properly set
input sensitivity
Amplifier doesn't
turn on
Intermittent output,
fluctuates when I tap
on
it or hit a bump
Faulty fuse
Poor connection
int
egrity
Insufficient
"Re
mote " input
Poor connection
integrity
Faulty speaker
Distorted, attenuated, I connection (Short
or
popping sound Circuit I Over
Current Protection)
Output shuts off after
a
while
Overheating
condition (Thermal
Protection)
Please refer
to Appendix A to set the
i nput sensitivity for max imum , low-
distortion output.
Remove fuse and check with contin uity
meter. Repl ace if necessary.
Check"+12V","Ground
'; and"Remote"
leads for pinched wir
es ; ensure tight
connections.
Make sure there is a
sufficient+ 12V
supply at
the "Remote"connection; if
n ot a relay may be required.
Make sure insulation has been properly
stripped back
at connection points fo r
good contact area.
Make sure
input connectors are making
good conta ct with in put jacks of the
amp lifier.
Inspect speaker wi r es for possible short-
circuit, either
toge th er or shorted to the
vehicle's chassisg ro und.
Check the nominal load impedance
at
the amplifier isequal to or greater tha n
2 ohms.
Make sure
amp lifier m ounting area has
adequate space
fo r ventilation an d heat
dissipation.

Appendix A:
Input Sensitivity Level Setting
Following the directions below will allow the installer to adjust the input
sensitivity of each amplifier channel pair in just a few minutes using equipment
commonly available in installation bays.
Necessary Equipment
• Digital AC Voltmeter
·CD or file with a sine-wave test tone recorded at 0 dB reference level in the
frequency range to be amplified for that set of channels (50 Hz for subwoofer
channels, 1 kHz for a midrange application). Do not use attenuated test tones
(-1 0 dB, -20 dB, etc.).
The Nine-Step Procedure
1) Disconnect the speakers from the amplifier's speaker output connec-
tors (you need
only disconnect one speaker wire).
2) Turn off all processing (bass/treble, loudness, EQ, etc.) on the source
unit, processors
(if used) and amplifier. Set the source unit's fader con-
trol to center position and its subwoofer level control to 3/4 of maxi-
mum.
3) Turn the "Input Sens:' control all the way down.
4) Set the source unit volume to 3/4 of full volume.This will allow for rea-
sonable
gain overlap with moderate clipping at full volume.
5) Using the chart on this page, determine the target voltage for input
sensitivity adjustment according to the nominal impedance of the
speaker system connected to the amplifier outputs.
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 speaker output connectors of the
amplifier. Make sure you test the voltage at the correct connectors
(+and-).
8) Increase the "Input Sens:' control until the target voltage is observed
with the voltmeter.
9) Once you have adjusted the amplifier to its maximum low-distortion
output level, reconnect the speaker(s) and listen to the system. The
"Input Sens:' controls can now be adjusted downward if the amplifier
requires attenuation to achieve the desired system balance.
4Cl 25.3 v
3Cl 25.7 v
2Cl 24 .5 V
Important!
Do
not increase any "Input Sens:' setting for any amplifier channel or
channel pair in
the system beyond the maximum level established during
this procedure. Doing
so will result in audible distortion and possible
speaker damage.
It will be necessary to re-adjust the "Input Sens. " for the affected channels if any
equalizer boost is activated after setting the "Input Sens. " with thi sprocedure. This
applies to any EQ boostcircuit, including source unit tone controls or EQ circuits. EQ
cuts will not require re-adjustment.
Appendix 8
Remote Level Control
With the optional M-RBC-1 Remote Level Control (sold separately), you can
control
the subwoofer volume from the front of the vehicle/vessel. The M-RBC-1
connects
to the amplifier 's harness-mounted RJll input jack. When connected
to the amplifier , the Remote Level Control operates as follows . At full counter-
clockwise
rotation , the audio will mute completely. At full cloc kw ise rotation
the level will be the same as if the M-RBC-1 was not connected at all. In othe r
words,
it operates strictly as a level attenuator .This control will n ot affect the
" Bass Boost"feature of the amplifier. Care should be taken to securely mount th is
control in a
manner that does not interfere wi th vehicle/vessel operation. When
setting
the amplifier 's input sensitivity, the Remote Level Contro l should be
unplugged or at full clockwise rotation (maximum level).

Limited Warranty- Amplifiers (USA)
JL Audio warrants this product to be free of defects in materials and
workmanship for a period of two (2) years from the original date of purchase.
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:
[phone]
9:00AM -5:30 PM (Eastern Time Zone)
JL Audio, Inc.
10369 North Commerce Pkwy.
Miramar,
FL 33025
(Do
not send product for repair to this address)
International Warranties:
Products purchased outside the United States of America are covered only
by that country's distributor and not by JL Audio, Inc.