What can I build with +/- 60v rails?

6L6 · 01:33 AM

Hello!

A buddy of mine gave me a pair of plate amps with very nice transformers in them, they are 49v-0-49v and probably 200-300VA each.

Can an Aleph or some other Papa amp be run on +/- 60v? Or is there something else to consider?

Are there any major disadvantages to this? (other than more expensive capacitors?)

lanchile · 01:49 AM

HPA-nxV300 380 watt MOSFET Audio Amplifier Module

I am sorry, I did not see this was pass labs section and you were looking to build one class A amplifier.

6L6 · 21st January 2012, 01:51 AM

No problem! It's a neat design... the modules are kinda expensive.

elizard · 02:50 AM

How about an Aleph 1.2? Real beast, runs on 60v rails.

I take that back. Just realized how undersized your transformers are for a 1.2

6L6 · 21st January 2012, 02:47 AM

I don't think there is enough current capability in the transformers. They are 300va or so.

Roscoe Primrose · 22nd January 2012, 11:12 PM

Are they 50-0-50, or are there actually two secondaries that you could run in parallel? 60V or so would be perfect for DeLite....

Or, do they have dual primaries that you could run in series to get 25-0-25?

Roscoe

6L6 · 22nd January 2012, 11:24 PM

Single 120v primary and 49-0-49 secondary. Not a dual secondary.

DeLite, although interesting, is completely impractical due to hot lightbulbs sticking out the top... Toddler-proof it isn't.

Roscoe Primrose · 22nd January 2012, 11:37 PM

Quote:

Originally Posted by 6L6

DeLite, although interesting, is completely impractical due to hot lightbulbs sticking out the top... Toddler-proof it isn't.

Treat it as an educational opportunity.

DeLite style amps can also be built with resistors on heat sinks, but they don't look as cool...

Roscoe

jazz · 23rd January 2012, 06:19 PM

Hi,

How about the CAS-1 or 2?

Joris

Nelson Pass · 23rd January 2012, 10:57 PM

Quote:

Originally Posted by 6L6

Can an Aleph or some other Papa amp be run on +/- 60v? Or is there something else to consider?

There is a version of the F5 Turbo that could do that.

21st January 2012, 01:18 AM	#1
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	What can I build with +/- 60v rails? Hello! A buddy of mine gave me a pair of plate amps with very nice transformers in them, they are 49v-0-49v and probably 200-300VA each. Can an Aleph or some other Papa amp be run on +/- 60v? Or is there something else to consider? Are there any major disadvantages to this? (other than more expensive capacitors?) __________________ Pass Labs Pearl Phono -- Pass B1 Preamp -- Pass F5 amplifier -- Pass Labs Pearl 2 Last edited by 6L6; 21st January 2012 at 01:33 AM.

21st January 2012, 01:41 AM	#2
lanchile diyAudio Member Join Date: Sep 2008	HPA-nxV300 380 watt MOSFET Audio Amplifier Module I am sorry, I did not see this was pass labs section and you were looking to build one class A amplifier. Last edited by lanchile; 21st January 2012 at 01:49 AM.

21st January 2012, 01:51 AM	#3
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	No problem! It's a neat design... the modules are kinda expensive. __________________ Pass Labs Pearl Phono -- Pass B1 Preamp -- Pass F5 amplifier -- Pass Labs Pearl 2

21st January 2012, 02:44 AM	#4
elizard diyAudio Member Join Date: Mar 2003 Location: Winnipeg, MB	How about an Aleph 1.2? Real beast, runs on 60v rails. I take that back. Just realized how undersized your transformers are for a 1.2 Last edited by elizard; 21st January 2012 at 02:50 AM.

21st January 2012, 02:47 AM	#5
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	I don't think there is enough current capability in the transformers. They are 300va or so. __________________ Pass Labs Pearl Phono -- Pass B1 Preamp -- Pass F5 amplifier -- Pass Labs Pearl 2


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22nd January 2012, 11:12 PM	#6
Roscoe Primrose Do you smell smoke? diyAudio Member Join Date: Jan 2004 Location: Virginia, USA	Are they 50-0-50, or are there actually two secondaries that you could run in parallel? 60V or so would be perfect for DeLite.... Or, do they have dual primaries that you could run in series to get 25-0-25? Roscoe

22nd January 2012, 11:24 PM	#7
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	Single 120v primary and 49-0-49 secondary. Not a dual secondary. DeLite, although interesting, is completely impractical due to hot lightbulbs sticking out the top... Toddler-proof it isn't. __________________ Pass Labs Pearl Phono -- Pass B1 Preamp -- Pass F5 amplifier -- Pass Labs Pearl 2

23rd January 2012, 06:19 PM	#9
jazz diyAudio Member Join Date: Dec 2001 Location: leiden, physically that is...	Hi, How about the CAS-1 or 2? Joris __________________ oh, what a beautifull day I wanna go out and play!

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