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5V DC to 6V DC
dhansen:
Hello,
Wasn't there a separate audio forum earlier today? When did these get combined?
Anyway, I have hacked a amplifier out of an old set of PC speakers and I was wondering if I could power this off the 5v of my switching power supply. The amp origianaly took a 6V power supply, but I was wondering if the 1V would make any difference.
Thanks!
Doug
OSCAR:
Yes, you can do this since it is only an amplification circuit. About the worse that can happen is the amp will be a little quieter, but probably not enough to notice.
In a similar vein, Williams sound boards require +12V & -12V from the power supply for the amp (24V), but if you use a newer arcade switching power supply, you only have +12, +5, and -5V per the jamma standard. In this case, I wire the -5V to the -12V input to the sound board, and it still works fine. It just won't as loud as it would with -12V.
saint:
I just can't leave well enough alone :)
--- Quote from: dhansen on November 16, 2003, 03:02:03 am ---Hello,
Wasn't there a separate audio forum earlier today? When did these get combined?
--- End quote ---
dhansen:
--- Quote from: saint on November 16, 2003, 11:58:48 am ---I just can't leave well enough alone :)
--- Quote from: dhansen on November 16, 2003, 03:02:03 am ---Hello,
Wasn't there a separate audio forum earlier today? When did these get combined?
--- End quote ---
--- End quote ---
Ahhhh, I thought I was going nucking futz! Thanks Oscar, I should have listened during the electronics chapter in science. :-[
Doug
dhansen:
Hmmm this didn't work too well. I hooked up the power to ground and +5v 1A on the switching power supply and the red light on the amp lit up but it dimmed when I plugged the audio jack into the PC. What would cause this? Anyway, I just ended up using the transformer that came with it.
My power strip is wired to 4 plugs are on a switch and two are constant power so all the lights, sound, and monitor come on with one switch. The PC's bios is set so I can power it up from the control panel with a couple clicks of a button.
Doug
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