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APPENDIX B:
RD400/4 Specifications
Amplifier Section:
Amplifier Topology: NexD™ Ultra-High Speed Class D
Power Supply: Unregulated MOSFET switching type
Rated Power at 14.4V with less than
1% THD+Noise (20 Hz - 20 kHz) RMS Method
Stereo, all channels driven:
75W RMS x 4 @ 4 ohms, 100W RMS x 4 @ 2 ohms
Bridged, all channels driven:
150W RMS x 2 @ 8 ohms, 200W RMS x 2 @ 4 ohms
Rated Power @ 12.5V with less than
1% THD + Noise (20 Hz - 20 kHz) RMS Method
Stereo, all channels driven:
60W RMS x 4 @ 4 ohms, 90W RMS x 4 @ 2 ohms
Rated Power Bridged, all channels driven:
120W RMS x 2 @ 8 ohms, 180W RMS x 2 @ 4 ohms
Signal to Noise Ratio:
>104 dB referred to rated power
(A-weighted, 20 Hz-20 kHz noise bandwidth)
>84 dB referred to 1W
(A-weighted, 20 Hz-20 kHz noise bandwidth)
Frequency Response: 12 Hz - 22 kHz (+0, -1 dB)
Damping Factor:
>150 @ 4 ohms per ch./ 50 Hz
>75 @ 2 ohms per ch. / 50 Hz
Input Section:
No. of Inputs: Two Stereo Pairs
Input Type: Differential-balanced with RCA jack inputs
Input Range: 200mV - 8V RMS
Signal Processing:
Filter Type: State-variable, 12 dB/octave Butterworth
with continuously variable cutoff frequency selection
from 50 - 500 Hz.
Configurable as Low-Pass or High-Pass. Defeatable.
Preamp Output: Buffered pass-through type.
Power Connections:
Recommended Fuse Value: 40A
Minimum Copper Power/Ground Wire : 4 AWG
(Note: Copper Clad Aluminum (CCA) wire is
not recommended.)
Dimensions (LxWxH):
9.78" x 6.96" x 2.13" (248 mm x 177 mm x 54 mm)
Due to ongoing product development, all specifications are subject to
change without notice.
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