Preamp Output - JL Audio MHD600/4-24V Owner's Manual

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:
mHd600/4-24V 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: 25A (AFS, AGU or
MaxiFuse™)
Rated Power (Stereo):
150W RMS x 4 @ 1.5-4Ω (22V - 29V)
Rated Power (Bridged):
300W RMS x 2 @ 3-8Ω (22V - 29V)
THD at Rated Power: <0.03% @ 4Ω per channel
(Average at 1 kHz)
Signal to Noise Ratio (20 kHz Bandwidth):
Referred to Rated Power: 110 dBA
Referred to 1 Watt: 88.2 dBA
Frequency Response: 6 Hz - 30 kHz (+0, -1dB)
Damping Factor:
300 @ 4Ω per ch. / 50 Hz
150 @ 2Ω per ch. / 50 Hz
crossover Filters:
Filter Sets: Two (Front Channel and Rear Channel)
Filter Type: State-variable, 12 dB/octave Butterworth or
24 dB/octave Linkwitz-Riley
Filter Modes: Low-Pass or High-Pass, Defeatable.
Cutoff Freq. Range: Continuously variable, 50 - 500 Hz
input sections:
No. of Inputs: Two Stereo Pairs (Front and Rear)
Input Type: Differential-balanced with RCA jack inputs
Input Range: Switchable from 200mV - 2V RMS (Low)
to 800mV - 8V RMS (High)

Preamp output:

2-Channel, buffered pass-through type, switch-selectable
to pass signal from "Front" inputs only, or from all four
inputs (summed).
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.
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