Factory Built F4 -double transformers

Manolo47 · 27th March 2013, 01:45 PM

What would the benefits, if any, be if I install a second Plitron 300VA transformer in my F4? It would have one serving each channel though the rest of the power supply is not independent for each channel.
So would I gain anything? Thanks.

Zen Mod · 27th March 2013, 01:53 PM

two xformers in one C bank ?

hardly any improvement

put second Graetz + C bank , and make double mono

then you'll have improvement

ECO-S1EP153BA Panasonic Electronic Components | P6890-ND | DigiKey

but - be aware that DC voltage will rise slightly (less sag due to less load per xformer) , so with 25Vdc caps , you're there , in danger zone

overtheairbroadcast · 27th March 2013, 02:05 PM

Well, add in a second capacitor bank (resevoir) and you will get more of a resevoir of charge and with the second transformer (power supply) you'll be able to fill that reservoir quicker than with one power supply.

The only improvement that can be noticed is if you can actually empty that resevoir and fill it back quick enough versus not being able to fill it back up quickly enough or not having a big enough resevoir.

On the flipside because I am bad at explaining things is (from what I can figure out from previous readings) is a hugely massive capacitor bank and an overly huge transformer is not needed. If you can not drain/consume it all, you don't need it vastly overbuilt as there is a maximum to how much your transistor can use.

overtheairbroadcast · 27th March 2013, 02:07 PM

Or what Zen Mod said up there... but yeah, to clarify my previous post, a capacitor bank and transformer for each side if I wasn't so clear.

6L6 · 27th March 2013, 02:51 PM

Adding a second transformer wouldn't do much, if anything.

But the benefits of another F4 would be huge...

buzzforb · 27th March 2013, 03:04 PM

I disagree. A second transformer and PSU tends to help in a noticeable way. Although a second F4 is a wonderful idea.

6L6 · 27th March 2013, 03:24 PM

A second transformer and PSU will be a huge benefit, certainly! The OP was talking about just adding another transformer.

I still vote for another F4

buzzforb · 27th March 2013, 03:48 PM

Agreed.

6L6 · 27th March 2013, 03:51 PM

Speaking of F4, mine is working.

Just needed to change one resistor.

buzzforb · 27th March 2013, 03:55 PM

Crank it up and add opa and you have something special. Even Mr ZM has funny per that would be great. Great customer device as well

27th March 2013, 01:45 PM	#1
Manolo47 diyAudio Member Join Date: Mar 2006 Location: San Juan	Factory Built F4 -double transformers What would the benefits, if any, be if I install a second Plitron 300VA transformer in my F4? It would have one serving each channel though the rest of the power supply is not independent for each channel. So would I gain anything? Thanks.

27th March 2013, 01:53 PM	#2
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	two xformers in one C bank ? hardly any improvement put second Graetz + C bank , and make double mono then you'll have improvement ECO-S1EP153BA Panasonic Electronic Components \| P6890-ND \| DigiKey but - be aware that DC voltage will rise slightly (less sag due to less load per xformer) , so with 25Vdc caps , you're there , in danger zone __________________ 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 March 2013, 02:51 PM	#5
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	Adding a second transformer wouldn't do much, if anything. But the benefits of another F4 would be huge... __________________ llustrated Build Guides - Pass Pearl 1 - Pass B1 - - Pass F5 - Pearl 2 - -O2 HPA - - Pass F4

27th March 2013, 03:04 PM	#6
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	I disagree. A second transformer and PSU tends to help in a noticeable way. Although a second F4 is a wonderful idea. __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

27th March 2013, 03:24 PM	#7
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	A second transformer and PSU will be a huge benefit, certainly! The OP was talking about just adding another transformer. I still vote for another F4 __________________ llustrated Build Guides - Pass Pearl 1 - Pass B1 - - Pass F5 - Pearl 2 - -O2 HPA - - Pass F4


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27th March 2013, 02:05 PM	#3
overtheairbroadcast diyAudio Member Join Date: Jan 2012 Location: Canada	Well, add in a second capacitor bank (resevoir) and you will get more of a resevoir of charge and with the second transformer (power supply) you'll be able to fill that reservoir quicker than with one power supply. The only improvement that can be noticed is if you can actually empty that resevoir and fill it back quick enough versus not being able to fill it back up quickly enough or not having a big enough resevoir. On the flipside because I am bad at explaining things is (from what I can figure out from previous readings) is a hugely massive capacitor bank and an overly huge transformer is not needed. If you can not drain/consume it all, you don't need it vastly overbuilt as there is a maximum to how much your transistor can use.

27th March 2013, 02:07 PM	#4
overtheairbroadcast diyAudio Member Join Date: Jan 2012 Location: Canada	Or what Zen Mod said up there... but yeah, to clarify my previous post, a capacitor bank and transformer for each side if I wasn't so clear.

27th March 2013, 03:48 PM	#8
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	Agreed. __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

27th March 2013, 03:51 PM	#9
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	Speaking of F4, mine is working. Just needed to change one resistor. __________________ llustrated Build Guides - Pass Pearl 1 - Pass B1 - - Pass F5 - Pearl 2 - -O2 HPA - - Pass F4

27th March 2013, 03:55 PM	#10
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	Crank it up and add opa and you have something special. Even Mr ZM has funny per that would be great. Great customer device as well __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

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