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| JL Audio - MHD900/5 Owner’s Manual
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serViCing Your 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.
If you have any questions about the installation or
setup of the amplifier not covered in this manual,
please contact your dealer or technical support.
Jl audio technical support
:
(954) 443-1100
9:00 AM – 5:30 PM (Eastern Time Zone)
Monday - Friday
aPPendix a:
mHd900/5 specifications
Amplifier Topology:
Class D, switching type with
patented Single-Cycle Control™ technology.
Power Supply:
Pulse width modulation-regulated
switching power supply
Recommended Fuse Value / Type:
60A (AFS, AGU or
MaxiFuse™)
Rated Power (Main Channels / Stereo):
100W RMS x 4 @ 4Ω (11V - 14.5V)
75W RMS x 4 @ 1.5-3Ω (11V - 14.5V)
Rated Power (Main Channels / Bridged):
200W RMS x 2 @ 8Ω (11V - 14.5V)
150W RMS x 2 @ 3-6Ω (11V - 14.5V)
Rated Power (Subwoofer Channel):
500W RMS x 1 @ 1.5-4Ω (11V - 14.5V)
THD at Rated Power:
Main Channels: <0.03% @ 4Ω per channel
Subwoofer Channel: <0.05% @ 4Ω
(Average at 1 kHz)
Signal to Noise Ratio (20 kHz Bandwidth):
Referred to Rated Power: 108 dBA
Referred to 1 Watt: 88 dBA
Frequency Response (Main Channels):
12 Hz - 28 kHz (+0, -1dB)
Frequency Response (Subwoofer Channel):
12 Hz - 10 kHz (+0, -1dB)
Damping Factor (Main Channels):
>400 @ 4Ω per ch. / 50 Hz
>200 @ 2Ω per ch. / 50 Hz
Damping Factor (Subwoofer Channel):
>800 @ 4Ω / 50 Hz
>400 @ 2Ω / 50 Hz
Crossover Filters:
High-Pass Filters:
Front Channels and Rear Channels
Low-Pass Filter:
Subwoofer Channel
Filter Type (all channels):
12 dB/octave Butterworth or
24 dB/octave Linkwitz-Riley
Cutoff Freq. Range:
Continuously variable, 50 - 500 Hz
input sections:
No. of Inputs:
Three Stereo Pairs (Front, Rear and Sub)
Input Type:
Differential-balanced with RCA jack inputs
Input Range:
Switchable from 200mV - 2V RMS (Low)
to 800mV - 8V RMS (High)
Chassis dimensions (lxwxH):
10.74 in. x 7.85 in. x 1.93 in. (273 mm x 199.5 mm x 49 mm)
Dimensions do not include connectors.
Due to ongoing product development, all specifications are subject to
change without notice.
