Hi Guys,
I got involved with these things when needing a strong PS for running hi amp battery chargers. I couldn't help but wonder if they would have a use in audio. They are relatively inexpensive for the amount of power they produce so I thought I would ask. I'll list this one as an example, but there are several that are similar. This one I am familiar with an it puts out 47A at 12.6VDC.
So what are the pros and cons of using such a power supply for audio?
Thanks, Terry
I got involved with these things when needing a strong PS for running hi amp battery chargers. I couldn't help but wonder if they would have a use in audio. They are relatively inexpensive for the amount of power they produce so I thought I would ask. I'll list this one as an example, but there are several that are similar. This one I am familiar with an it puts out 47A at 12.6VDC.
So what are the pros and cons of using such a power supply for audio?
Thanks, Terry
Go to this thread and see if your PS is in there. They have a lot of Server power supplies covered with instructions of how to turn them on. it is actually full of links to threads about each given PS.
Hope this helps.
Hope this helps.
I've got two SUN BLADE 2000 power supplies made by Sony Japan and I bet they are real good. (Sun / 300-1357 / Sony 670 Watt Power Supply for Sun Blade 1000, Sun Blade 2000 and Sun Ultra 80 -- Sun Parts). I surprised when open this PSU: very thick cable, all see very high quality.
Just wonder if it is good for audio application? Anyone got any suggestion?
Thanks for the thread.
Just wonder if it is good for audio application? Anyone got any suggestion?
Thanks for the thread.
They appear to be ideal for powering 12V car amps at home. That would be the most sensible way to use them.
I knew they would do that. I wondered about using them as a replacement for the normal transformer/CRC setup. I have a few that are set up for 24V, 47A power to run high powered battery chargers. It could easily be split at a +/- 12.6V 600W power supply.
The voltages just don't seem useful unless you happen to be driving very low impedances, like an array of speakers or, perhaps a servo motor. Stacking a bunch of them would be OK for the test bench, but not an elegant way to power amps in the living room if it takes 8 to 12 of them.
What's the ripple like?
What's the ripple like?
If you used 4 of them you could have +/- 25VDC 700W. However, that would be with 4 fans running. It would be pretty loud.
The units in the first two pics in post #9 can be run without the fans if you could get them ventilation. The other unit has to see the fan turning or it shuts down.
The beauty of these is you can get them for a song. I usually get them for under $30 for a pair. I have used them at 40A continuous all day without a problem.
The units in the first two pics in post #9 can be run without the fans if you could get them ventilation. The other unit has to see the fan turning or it shuts down.
The beauty of these is you can get them for a song. I usually get them for under $30 for a pair. I have used them at 40A continuous all day without a problem.
Does such a power supply induce noise in the amps? Will you call it a 'clean power supply'?
http://www.eetimes.com/design/audio...pes---transformer-considerations?pageNumber=1
http://www.eetimes.com/design/audio...pes---transformer-considerations?pageNumber=1
Last edited:
Very interesting. I would be happy to test for that if someone can tell me what to do to find it. I have a scope and a couple multimeters but I don't know how to look for induced noise. I also have a couple DIY amps that are bare bones that I could hook them up to and look that way. I have a Symasym that is just open and mounted to a heatsink. I believe it will run on 24V rails.
I hooked it up to one of the Symasym boards. Just 12V rails. I will have to lift the DC ground from the AC ground so I can run them in series for 24V rails. Actually. I will have to lift the DC from each unit if I want to use my scope. Either that or I have to disable the AC ground because as it is, the center tap measures 12.2V to the AC ground which shorts to the ground on the scope lead. IIRC, when I had lifted the DC ground on both units I got and AC ripple to ground. Probably need some sort of filter. I'll keep after it and see if I can resolve it. Funny, the Symasym actually plays on 12V rails. Not great, but it plays.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Power Supplies
- Server power supplies, any good for audio?