F3 and F4 Clone PCB Reissue group buy, also F5 PCBs

[zendra]

Hi Peter,
I received pcb yesterday.
Thank you, and thanks to Nelson.

 

[Tube Noob]

I know its a little late, I can't beleive I haven't seen this thread in the last few months. But by any chance are there any extra F3 and/or F4 boards available??? (please?)

 

[Peter Daniel]

The boards are still available.

 

[woodturner-fran]

First of my boards arrived today!!

Many thanks Peter for all your work in this. Boards are beautiful!




Fran

 

[Tube Noob]

Peter, if available I would like one set of stereo F3, one set of stereo F4, one set of stereo F5, and an extra PS board for use with an F1 build. If I am correct this would come to $105

 

[Peter Daniel]

Yes, that's correct and boards are available.

 

[Tube Noob]

You have email, Peter!

 

[tristania79]

First part of my order arrived today. Thank you very much Peter .The quality of the board is great !

 

[Diomedian]

Hi Peter,

Just to confirm, I'd like to order two channels of F5, and two power supply boards for mono operation. This is $45, is that correct?

thanks,
-j

 

[Peter Daniel]

Yes, that's correct. I have plenty of F5 amp and PS boards, so no problem witrh orders.

I've built the first amp amp today and everything looks good. Will do some listening tests soon.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[Peter Daniel]

And this is one channel board (thermistors still to be installed). I used mostly miniature Dales from Digi Key with the exception of Caddock and Vishay at the input. Also, insted of 2 x 100R I used single 50R Mills on each side.

An externally hosted image should be here but it was not working when we last tested it.

 

[woodturner-fran]

Peter, what is the Q3 to Q4 mounting hole distance?

is there any problem in setting these a bit further apart and running wires back to the PCB?


Fran

 

[Peter Daniel]

Peter, what is the Q3 to Q4 mounting hole distance?

is there any problem in setting these a bit further apart and running wires back to the PCB?

The mounting hole distance is 3.7" and I believe it's more than with the other F5 board. Nelson mentioned that there is no problem with extention wires up to 12" or so.

Also, this is the same distance I used for A30 and F4 amp pcbs so boards swapping is simplified. In fact, the chassis I'm using now was originally built for A30 amp: http://www.diyaudio.com/forums/showthread.php?postid=815856#post815856

 

[Melon Head]

Thamks for the great photos Peter. It really does encorage the rest of us along the way.

 

[Marsfrogie]

Just an FYI. The .47ohm power resistors provided with the tech-diy F4 kit are radial and do not appear to fit in the F4 PCB board. You will need to source axial power resistors unless you wish to modify the board or have the resistors towering above the board.

 

[woodturner-fran]

Ah, thanks Peter. I think I will mount mine off board and spread them a bit on the heatsink. It will make life easier for me as well I think.

I soldered together the 2 power supply boards. I didn't see an obvious place for the 2.2K bleeder resistors but I just soldered them in before the first cap. Hope thats OK.

Fran

 

[hayenc]

Received the partial shipment. Eagerly awaiting the backordered F5 boards.

 

[Peter Daniel]

Just an FYI. The .47ohm power resistors provided with the tech-diy F4 kit are radial and do not appear to fit in the F4 PCB board. You will need to source axial power resistors unless you wish to modify the board or have the resistors towering above the board.

The F5 boards have additional set of pads to be compatible with radial resistors as well.

 

[CfM]

F5 boards arrived in Germany today.

.. really cute

Thanks a lot, Peter!


Greetings,
Chris

 

[AlanElsdon]

My F3 psu boards arrived today - they look the business - thanks Peter.

Alan