F5 PSU

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.

Thanks

-Riley

Zen Mod · 27th April 2012, 08:07 PM

perfect

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

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

@AudioSan

From where did you sourced the power supply boards?

Regards

AudioSan · 11:37 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.

27th April 2012, 07:48 PM	#1
riley.reynolds diyAudio Member Join Date: Mar 2012 Location: tucson	F5 PSU 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. Thanks -Riley

27th April 2012, 08:07 PM	#2
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	perfect __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

27th April 2012, 09:10 PM	#4
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	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. __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

27th April 2012, 10:41 PM	#8
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	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. __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

27th April 2012, 11:29 PM	#9
VT67 diyAudio Member Join Date: Jun 2004 Location: Belgium	@AudioSan From where did you sourced the power supply boards? Regards __________________ VBITNGC Krell KSA-50 Krell KSA-100MkII


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27th April 2012, 08:26 PM	#3
oneplustwo 1.21 Gigawatts?! diyAudio Member Join Date: Apr 2009 Location: San Francisco	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.

27th April 2012, 09:19 PM	#5
oneplustwo 1.21 Gigawatts?! diyAudio Member Join Date: Apr 2009 Location: San Francisco	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.

27th April 2012, 10:03 PM	#7
riley.reynolds diyAudio Member Join Date: Mar 2012 Location: tucson	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.

27th April 2012, 11:32 PM	#10
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	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. __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers Last edited by AudioSan; 27th April 2012 at 11:37 PM.

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