Industrial 12V PWR supply to be used with T-amp - diyAudio
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Old 20th July 2005, 02:25 PM   #1
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Default Industrial 12V PWR supply to be used with T-amp

Hi,

I just bought an industrial 12V 7.5A PWR supply (MAP80-1012) at a nice price. I plane to use it with a T amp (Kit to be determined). I just need to know if you think that it should be a good source of power for the T amp ?

http://catalogue.e-sonic.com/cgi-dev...num=MAP80-1012

Thanks !

Daniel
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Old 20th July 2005, 04:26 PM   #2
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That should be fine.. for 4 T-amps! You probably can get away with just a simple LM317 based linear supply for the t-amp.. Run you maybe $15 for a velleman kit or something.
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Old 20th July 2005, 04:27 PM   #3
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Quote:
Originally posted by motherone
That should be fine.. for 4 T-amps! You probably can get away with just a simple LM317 based linear supply for the t-amp.. Run you maybe $15 for a velleman kit or something.

Actually, I'll plug one of my favorite little shops.. Check out www.tangentsoft.net/audio/shop and check out his tread kit. It's everything you need to make a 1.5 amp linear PSU for ~$15.. All you add is the transformer (12VAC 2.4 amp wallwart is available at allelectronics.com for $5, I think).
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Old 20th July 2005, 04:35 PM   #4
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Here is the switching supply I just purchased for my two T-amps.

power supply

Total price including shipping was under $25 and it has enough juice for 6 or more T-amps.
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Old 20th July 2005, 06:25 PM   #5
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I've got a 24V/28V PowerOne unit like that powering my Millett Hybrid headphone amp. Good quality stuff. I can't believe how cheap they go for on Ebay. Mine was ~$25 shipped. I'd have picked up one for my T-Amp, but I couldn't find one in 12V or 13.5V. I heard laptop or LCD PSUs are also good, but I wasn't sure about that one. I'd want to get more information before I went that route.

It looks like I'll be picking up one of those 150W units though. That's a great deal. I'll never have to buy another.
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Old 20th July 2005, 06:33 PM   #6
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I dunno. I'm all for surplus stuff on ebay (got loads of it here ).. But 7.5 amps is really overkill for the t-amp. I think maybe 2 amps max is more appropriate, like this:

http://cgi.ebay.com/ws/eBayISAPI.dll...ory=11772&rd=1

JWFokker: Are you using a 7.5A PSU on your Millett? Or one of the smaller ones? I'm in the process of building two of them (one for me, one for a friend) from the head-fi group buy.
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Old 20th July 2005, 07:38 PM   #7
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Quote:
Originally posted by JWFokker
I've got a 24V/28V PowerOne unit like that powering my Millett Hybrid headphone amp. Good quality stuff. I can't believe how cheap they go for on Ebay. Mine was ~$25 shipped. I'd have picked up one for my T-Amp, but I couldn't find one in 12V or 13.5V. I heard laptop or LCD PSUs are also good, but I wasn't sure about that one. I'd want to get more information before I went that route.

It looks like I'll be picking up one of those 150W units though. That's a great deal. I'll never have to buy another.
Hi,

Thank for sharing your experience with me !

Sorry to read that you were not able to find a 12V on ebay. This is exactly where I bought my PowerOne :

http://cgi.ebay.com/ws/eBayISAPI.dll...ME:B:EOAB:US:6

I could had bid and get it for a little bit less ($19.99), but I was not at home when the auction was ending. Buying this one was interesting for me as the person who sale it is from Canada and I wont have to pay some duty fee and taxes (at least $5).

Thank’s again !
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Old 20th July 2005, 08:17 PM   #8
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I've got a MAP130-1024, so it can do 6.25A at 24V or 5.4A at 28V. A bit more than I need for the Millett Hybrid. I two of them from the Head-Fi group buy also.

Sure 12.5A is a lot more than I need for the T-Amp, but I'll never have to buy another 12V PSU. I plan on running up to 3 T-Amps, so it's worth it, I think.
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Old 20th July 2005, 09:00 PM   #9
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Quote:
Originally posted by JWFokker
I've got a MAP130-1024, so it can do 6.25A at 24V or 5.4A at 28V. A bit more than I need for the Millett Hybrid. I two of them from the Head-Fi group buy also.

Sure 12.5A is a lot more than I need for the T-Amp, but I'll never have to buy another 12V PSU. I plan on running up to 3 T-Amps, so it's worth it, I think.
With 12.5A, you could make a fully biamped 6 channel HT system! Are you going to be tri-amping some speakers?
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Old 20th July 2005, 09:44 PM   #10
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Even if 12 amps is more than you need, it never hurts to have all that extra current capability. I mean $25 for a 12v 12 amp switching supply is a bargain you cant pass up.
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