Used Audera HD800 0.1 Class D amplifier. Supposedly 650W at 0.1%. "LFE" (no filter) RCA input on small interface board with volume control, power indicator. "Usable" response 10Hz out to 1kHz. Tested, operational. No power supply, only what's pictured. Power input connector clearly designated.
Originally, this amplifier sends a signal to a switching power supply such that it varies its +/- rails in response to the input amplitude. I connected it to a +/- 30VDC, 60 Hz iron transformer based PSU (ignoring the control wire) and it played. I'll guess the max PSU voltage for this amp is +/- 40V, based in its claimed bridged output max p-p voltage of "160V p-p".
I'll assume one could make a powered sub using this, or a bass guitar amplifier - with lots of headroom - by adding an appropriate power supply. I neither need a 650W sub, nor a 650W bass amp...
I'd like $40 for it, plus shipping - USA / Canada only unless you can convince me otherwise. Thanks,
Originally, this amplifier sends a signal to a switching power supply such that it varies its +/- rails in response to the input amplitude. I connected it to a +/- 30VDC, 60 Hz iron transformer based PSU (ignoring the control wire) and it played. I'll guess the max PSU voltage for this amp is +/- 40V, based in its claimed bridged output max p-p voltage of "160V p-p".
I'll assume one could make a powered sub using this, or a bass guitar amplifier - with lots of headroom - by adding an appropriate power supply. I neither need a 650W sub, nor a 650W bass amp...
I'd like $40 for it, plus shipping - USA / Canada only unless you can convince me otherwise. Thanks,