Re: Want to Try Super Tube Sound for $20?
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Joined: Mar 2002
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OP
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Hi samandnoah
Watts = Amps * Volts.
15 watts per channel = 30 watts = X * 14 volts
30W/14V = 2.1 Amps.
So, a 3 amp 14 volt power supply will give you a bit extra. Anything more would be unnecessary.
Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.
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Re: Want to Try Super Tube Sound for $20?
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
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Rich, as 2x6 correctly demonstrated, that power supply would be more than adequate. Although manufacturers sometimes indulge in "high current" hype, the amount of current needed in a specific situation is no more than required by God and Dr. Ohm.
-----------------------------------
Enjoy the music, not the equipment.
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Re: Want to Try Super Tube Sound for $20?
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Joined: May 2005
Posts: 7
regular
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regular
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Very interesting indeed...especially at only 20 bucks. And here is what 500 bucks can do with the same little amp!
http://www.redwineaudio.com
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Re: Want to Try Super Tube Sound for $20?
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Joined: May 2004
Posts: 1,201
connoisseur
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connoisseur
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*Michael* AV123 Refugee - X-LS Encore, X-Voce, X-Omnis, Elt-Dpa's Denon AVR-591 Magnavox NB500MGX BDP
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Re: Want to Try Super Tube Sound for $20?
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Joined: Mar 2005
Posts: 64
old hand
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old hand
Joined: Mar 2005
Posts: 64 |
Do you think the Tamp can handle 12V 7.5Amps? Since I have a ton of Computer power supplies and one of the rails is 12V 7.5A 200W, i was thinking i could use that to feed into the TAmp. But I am not sure if it can handle it. Does anyone know? THanks.
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Re: Want to Try Super Tube Sound for $20?
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Joined: Mar 2002
Posts: 3,749 Likes: 37
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OP
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Posts: 3,749 Likes: 37 |
It's the volts - 12 volts are fine for the T Amp. It doesn't make any difference how many amps are available so long as you provide at least 2.1 amps. If you go over 14 volts you'll fry the T Amp's chip. I would use an independent power supply.
If the T Amp ever drew 7 amps, you'd have a lot of melted, undifferentiated metal, plastic, insulation, bad gasses, and probably a fire.
Last edited by 2x6spds; 06/06/05 04:57 PM.
Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.
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Re: Want to Try Super Tube Sound for $20?
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Joined: Dec 2003
Posts: 3,602
connoisseur
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connoisseur
Joined: Dec 2003
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In reply to:
Do you think the Tamp can handle 12V 7.5Amps? Since I have a ton of Computer power supplies and one of the rails is 12V 7.5A 200W, i was thinking i could use that to feed into the TAmp. But I am not sure if it can handle it. Does anyone know? THanks.
Just remember that you need a pretty substantial load for an AT/ATX PS to regulate itself (I found out the hard way building my arcade cabinet - used a spare AT PS to power the coin return lights and fans... even now if one of the #45 lamps in the coin returns burns out, it goes below the minimum load and starts doing funky things with the output voltage)
A good starting point is 10% of rated maximum, so you may find you have to "burn off" a bulb or something to reach your minimum load.
Bren R.
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Re: Want to Try Super Tube Sound for $20?
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Joined: Mar 2005
Posts: 64
old hand
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old hand
Joined: Mar 2005
Posts: 64 |
So that is a negative on using a ATX power supply for the TAmp? TAmps are so hard to come by nowadays that I am not ready to fry one just yet.
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Re: Want to Try Super Tube Sound for $20?
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Joined: Dec 2003
Posts: 3,602
connoisseur
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connoisseur
Joined: Dec 2003
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I really don't know whether or not the load would be enough to regulate voltage (and each PS is different... I tried two before I found a whopping 150W AT that would be stable with two fans (80mm and 60m) and two #45 lamps attached. ATX may be different (just remember to "hold low" the POWER GOOD line on the wiring harness or it won't fire up!) but if the T-Amp isn't tolerant of higher than expected voltage, I wouldn't try it.
My opinion. YOMV.
Bren R.
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Re: Want to Try Super Tube Sound for $20?
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Joined: Jan 2004
Posts: 3,016
connoisseur
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connoisseur
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OH MY GOSH!!!! WHAT HAPPENED TO YOUR FACE BREN!!
take it away, its freakin me out!!
thats scary..
bigjohn
Last edited by bigjohn; 06/06/05 09:27 PM.
EXCUSE ME, ARE YOU THE SINGING BUSH??
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