APPENDIX D:
450/4v2 Specifications
General Specifications:
Recommended Fuse Value: 60A
Recommended Fuse Type: AFS, AGU or MaxiFuse™
Input Sections:
No. of Inputs: Two Stereo Pairs (CH 1&2, CH 3&4)
Input Type: Differential-balanced with RCA jack inputs
Input Range: Switchable from 200mV - 2V RMS to 800mV - 8V RMS
Channels 1 & 2:
Amplifier Topology: Class A/B with patented Absolute Symmetry™ dual N-Channel MOSFET output design Power Supply: Independent, pulse width modulation- regulated switching power supply with multistage impedance optimizing circuitry.
Rated Power (Stereo):
150W RMS x 2 @ 1.5-4Ω (11V - 14.5V) Rated Power (Bridged):
300W RMS x 1 @ 3-8Ω (11V - 14.5V)
THD at Rated Power: <0.03% @ 4Ω per channel (20 Hz-20 kHz)
Signal to Noise Ratio: >108.5 dB referred to rated power (A-weighted, 20 Hz-20 kHz noise bandwidth) Frequency Response: 5 Hz - 30 kHz (+0, -1dB) Damping Factor: >200 @ 4Ω per ch. / 50 Hz, >100 @ 2Ω per ch. / 50 Hz
Slew Rate: ± 25V/μs
CH 1&2 Filter: State-variable, 12 dB/octave Butterworth or
24dB/octave Linkwitz-Riley Low-Pass or High-Pass with continuously variable cutoff frequency from 50 - 500 Hz, switchable to a range of 500 - 5000 Hz, via x10 switch.
Can also be cascaded from Channel 3&4 filter’s cutoff frequency to operate as a bandpass filter for tri-amp configurations. Defeatable.
LF Boost: Single-band, fixed-frequency (48 Hz), fixed “Q” +6 dB boost. Defeatable. Port for optional remote bass control to provide variable boost control from 0 to +15 dB. Infrasonic Filter: 24 dB/octave @ 30 Hz, defeatable.
Channels 3 & 4:
Amplifier Topology: Class A/B with patented Absolute Symmetry™ dual N-Channel MOSFET output design Power Supply: Independent, pulse width modulation- regulated switching power supply with multistage impedance optimizing circuitry.
Rated Power (Stereo):
75W RMS x 2 @ 1.5 - 4Ω (11V - 14.5V) Rated Power (Bridged):
150W RMS x 1 @ 3 - 8Ω (11V - 14.5V)
THD at Rated Power: <0.03% @ 4Ω per channel (20 Hz - 20 kHz)
Signal to Noise Ratio: >108.5 dB referred to rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) Frequency Response: 5 Hz - 30 kHz (+0, -1 dB) Damping Factor: >200 @ 4Ω per ch. / 50 Hz, >100 @ 2Ω per ch. / 50 Hz
Slew Rate: ± 25V/μs
Channel 3&4 Filter: State-variable, 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley High-Pass with continuously variable cutoff frequency from 50 - 500 Hz, switchable to a range of 500 - 5000 Hz, via x10 switch.
Preamp Output:
2-Channel pass-through type, switch-selectable to pass signal from CH 1&2 inputs only, from CH 3&4 inputs only or from all four inputs (summed).
Dimensions (LxWxH):
19.70 in. x 9.25 in. x 2.36 in. (500 mm x 235 mm x 60 mm)
