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Old 3rd June 2009, 04:19 PM   #1
stoc005 is offline stoc005  United States
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Default SMPS for F5

http://cgi.ebay.com/24V-DC-6A-145W-R...arms=72%3A1205|66%3A2|65%3A12|39%3A1|240%3A1318|301%3A0|293%3A1| 294%3A50

Here is a 24v 6A switching supply for very little $$$. Free shipping too. I can't buy a decent transformer and caps for that little. The brand is Meanwell and we use them here at work so I know they do work and have been reliable. A big plus is the current limiting too.

Since (2) 24v supplies are needed to build an F5, wouldn't this be a reasonable way to power the amp?? I do think that a SMPS should be remote from the main amp chassis with plenty of EMI/RFI filtering between the two. Obtaining high current connectors are not a problem either, I think. Am I missing something here??

Thanks for any comments,
Bill
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Old 3rd June 2009, 04:34 PM   #2
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SMPS tend to get a bad reputation by the audio community. The PS in that link lists the switching frequency as 25Khz which is pretty low. I would want something much higher, say 100Khz minimum.

If you did go the SMPS route I would add some more low ESR caps and ferrites to clean up any leftover noise or ripple. Of course an oscilloscope will greatly help
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Old 3rd June 2009, 04:36 PM   #3
juma is offline juma  Serbia
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You'll need four of those to power two channels of F5. That's 160 bucks. For that amount of money you can build proper PSU for F5, right ?
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