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APPENDIX A:
HD900/5 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.