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#1 |
diyAudio Member
Join Date: Jul 2017
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I tried digging through the forums and had no luck finding an answer. Do the Pass mono blocks use the same power adapter as the stereo units? I just finished building a pair and below is what I ordered.
MEAN WELL GST120A24-P1M 24V 5 Amp 120W Regulated Switching Table Top Power Are there other cheaper alternatives to this that have worked well? Thanks. |
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#2 |
Official Court Jester
diyAudio Member
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if brick is good for stereo amp , it's even better when feeding just one channel
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my Papa is smarter than your Nelson ! clean ![]() ![]() ![]() |
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#3 | |
The one and only
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Quote:
quieter than most, and they do come with a warranty. Two issues that you have to deal with on switchers - The rating of the supply has to be at least the peak current draw of the supply, not the average. The switchers use sensing circuits to see if the the load has too low an impedance, and some of them won't turn on into big capacitors. Others will deliver limited current until the capacitor is charged. And of course there is always noise.... |
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#4 |
diyAudio Member
Join Date: Oct 2003
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I use one of these to power an ACA, picked up two, one for each channel for MOFO as well, work great, and cheap
LRS-150-24 MEAN WELL | Mouser |
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#5 |
Got Foam?
diyAudio Member
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If you want to use a very low ripple linear alternative. The SLB SR PSU can work very well. Under 1mV rms ripple with 4A of current and just requires connection to a trafo. It handles rectification, CRC, and ripple control.
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XRKaudio https://www.etsy.com/shop/XRKAudio Last edited by xrk971; 9th July 2019 at 07:29 AM. |
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#6 |
diyAudio Member
Join Date: Jun 2001
Location: Seattle, Washington USA
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On the other hand, if you want to do something totally over the top that's impractical from a cost, size, weight and usability perspective...
500VA 30+30 transformer > 25A Bridge rectifiers > 22mh toroidal chokes > 50V 30,000 uf capacitors > LT338 regulators (set at 23V) > 50V 30,000 uf capacitors. Connected to the ACA with Neutrik terminated star quad cable. Kind of silly for a a measly 8 watt amplifier, but if you have all of parts in your amp-building stash, why not? Thanks to Nelson Pass for the excellent design. Ken |
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#7 |
Official Court Jester
diyAudio Member
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I like overkill
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my Papa is smarter than your Nelson ! clean ![]() ![]() ![]() |
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#8 |
Hoopy Frood
diyAudio Member
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Nice! Haven't seen a TO-3 regulator in a while.
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We are fearless amplifier builders. A little heat doesn't scare us at all. - NP 2002 |
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