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riley.reynolds 27th April 2012 07:48 PM

I just want to verify my thoughts before i go spend a wad of cash on parts

I want to build a dual mono PSU for my F5 build.

Would this PSU design be appropriate for one channel? ie. i need to make two.

Also, would 2x300VA transformers be appropriate size.



Zen Mod 27th April 2012 08:07 PM


oneplustwo 27th April 2012 08:26 PM

Mine wasn't dual mono but that's what I went with. That said, I would also explore CLC vs. CRC. I haven't built a CLC one but some folks prefer that route.

buzzforb 27th April 2012 09:10 PM

you could save on the dual mono PSU and have a standalone PSU with umbilicals to each monoblock. Only have to build one PSU set and much bigger trafo.

oneplustwo 27th April 2012 09:19 PM

Actually, I second that. Separate PSU in general makes some things quite a bit simpler from a layout and wiring perspective. It's an extra enclosure to build though. But you won't have to worry about transformer hum.

AudioSan 27th April 2012 09:38 PM

1 Attachment(s)
here is a dual mono F5.
6x12000uF and 225VA transformer pr channel.
and 1.7A bias and dual outputs :)

riley.reynolds 27th April 2012 10:03 PM

Thanks for the replies. I will post pictures but they might be a while as i have a few projects ahead of this one and im just gathering parts.

buzzforb 27th April 2012 10:41 PM

Audio San,
What kind of heat can two of those 10.08 HS take? I have the very same thing and was wandering how far you have pushed them.

VT67 27th April 2012 11:29 PM


From where did you sourced the power supply boards?


AudioSan 27th April 2012 11:32 PM

hello buzz :) mine are 6" high(long) and are now consuming about 90W pr side.
but they can do ALOT more if you can spread out the heat. only half of mine get warm.
and that half only get to about 45C on the baseplate( 1cm away from the outher transistors).
so 150W pr side with good heatspread is possible :) depending on your ambient temp.
mine is 22C

150W is guesswork :) but i think it's close actual numbers.

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