F5 pcb group buy... - Page 43

Russellc · 25th February 2010, 02:06 PM

Quote:

Originally Posted by Peter Daniel

Got it, and will ship on Tuesday, thanks.

Received the boards Peter, beautiful as usual.

thanks,
Russellc

Russellc · 25th February 2010, 02:07 PM

Quote:

Originally Posted by Pathmark

ok i built second channel but same result! not sure what would cause -20 volts at output? there are not that many components to place incorrectly! any ideas?

Pathmark, any developments? We're waiting (or at least I am) to hear the problem. Were the resistor legs in the correct positions as another poster queried?

Russellc

qusp · 27th February 2010, 11:14 AM

Hi Peter, have sent you a PM about some PCBs, thanks

Russellc · 1st March 2010, 02:25 PM

Ok, I have noted warnings about the outputs and apparently the MUR 3060 diodes I'm using concerning static charge. All of these pieces have remained in their packaging since arrival.

What precautions need to be taken in the handling of these pieces? I havent really read anyone talking about this, maybe its not as big a problem as I'm making it, but I'm sure there are some do's and dont's...

thanks in advance,
Russellc

AlanElsdon · 2nd March 2010, 09:25 AM

Peter,

Having built my F5's (and blown them up - mosfets in the wrong way!!) I have rebuilt them but this time I do not have the mosfets directly in the boards - there are short (2 inch) leads from the board to the devices. Setting the bias was straightforward with little drift.

However I am a little worried about the temperature tracking thermistors which are in their original place on the board - so will there effect be reduced? Should I move them to be closer (on top?) of the fets?

The heatsinks are overkill for the amp and are running cool.

Alan

HVfanatic · 2nd March 2010, 11:47 AM

Hi Peter,

can I get a set of F5 boards as well? (I contacted you for Aleph JX, so you can ship together...)

Please send me a PN for the money, as soon as you'll wait for it...

Regs, Dirk

androuski · 13th March 2010, 06:18 AM

Hello Peter,
if they are still available I'll take a pair of F5 stereo pcb.
15$ is the amount for international shipping ?
Regards,
Nicolas

Peter Daniel · 13th March 2010, 07:57 AM

They are still avalable and the price is correct.

HaflerFreak · 13th March 2010, 08:55 AM

Money sent, sorry about the redundent PM....
Thank you!

AlanElsdon · 13th March 2010, 10:01 AM

Peter,

I got my F5's up and running - blew up a few things on the way and had to use my spare set of boards. I removed the temp compensation components and I have to say that this is a beatiful sounding amp which seems to be getting better day on day.

Alan

1st March 2010, 02:25 PM	#424
Russellc diyAudio Member Join Date: Mar 2003 Location: midwest	F-5 assembly and static charges Ok, I have noted warnings about the outputs and apparently the MUR 3060 diodes I'm using concerning static charge. All of these pieces have remained in their packaging since arrival. What precautions need to be taken in the handling of these pieces? I havent really read anyone talking about this, maybe its not as big a problem as I'm making it, but I'm sure there are some do's and dont's... thanks in advance, Russellc

2nd March 2010, 09:25 AM	#425
AlanElsdon diyAudio Member Join Date: Jun 2003 Location: Surrey/Hampshire borders	Thermistors TH1/2 Peter, Having built my F5's (and blown them up - mosfets in the wrong way!!) I have rebuilt them but this time I do not have the mosfets directly in the boards - there are short (2 inch) leads from the board to the devices. Setting the bias was straightforward with little drift. However I am a little worried about the temperature tracking thermistors which are in their original place on the board - so will there effect be reduced? Should I move them to be closer (on top?) of the fets? The heatsinks are overkill for the amp and are running cool. Alan

13th March 2010, 07:57 AM	#428
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	They are still avalable and the price is correct. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

13th March 2010, 10:01 AM	#430
AlanElsdon diyAudio Member Join Date: Jun 2003 Location: Surrey/Hampshire borders	F5 up and running Peter, I got my F5's up and running - blew up a few things on the way and had to use my spare set of boards. I removed the temp compensation components and I have to say that this is a beatiful sounding amp which seems to be getting better day on day. Alan

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27th February 2010, 11:14 AM	#423
qusp Sometimes a square peg fits a round hole just fine diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	Hi Peter, have sent you a PM about some PCBs, thanks

2nd March 2010, 11:47 AM	#426
HVfanatic diyAudio Member Join Date: Feb 2008	Hi Peter, can I get a set of F5 boards as well? (I contacted you for Aleph JX, so you can ship together...) Please send me a PN for the money, as soon as you'll wait for it... Regs, Dirk

13th March 2010, 06:18 AM	#427
androuski diyAudio Member Join Date: Jan 2008	Hello Peter, if they are still available I'll take a pair of F5 stereo pcb. 15$ is the amount for international shipping ? Regards, Nicolas

13th March 2010, 08:55 AM	#429
HaflerFreak diyAudio Member Join Date: Jun 2007 Location: Westmont, IL	Money sent, sorry about the redundent PM.... Thank you!

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