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Re: How did I do the power supply...Badly [message #9661 is a reply to message #9660 ] Fri, 19 May 2006 06:52 Go to previous messageGo to next message
Manualblock  is currently offline Manualblock
Messages: 4973
Registered: May 2009
Illuminati (13th Degree)
I have the Broskie Board for four 5687's as a line stage. Truthfully I have not even studied it yet but I hope to get around to it soon. I see your are different; two mono boards; is that right?

Re: How did I do the power supply...Badly [message #9676 is a reply to message #9661 ] Sun, 21 May 2006 21:13 Go to previous messageGo to next message
Forty2wo  is currently offline Forty2wo
Messages: 163
Registered: May 2009
Master
Hi M,
The boards I am using are the ones Bas Horneman had done up as a group buy over at DIY. There are some small differences (JB adds some decopling caps, Bas adds a trim pot ect..) but you can take the same hand full of parts and use either with success. JB’s board was not available when I built mine.
Are you sure that JB’s board is set up for the 5687? It has that odd pinout, which leaves it off my favorite list. I will try to check later.

If you have not been to the Tube cad site lately, in the last few bolgs there are PDF manuals as well as a big chart of tubes, with recommended cathode resistors and everything. Good stuff…John



Re: How did I do the power supply...Badly [message #9681 is a reply to message #9676 ] Fri, 26 May 2006 06:56 Go to previous messageGo to next message
Manualblock  is currently offline Manualblock
Messages: 4973
Registered: May 2009
Illuminati (13th Degree)
Thanks John; yes I did make sure the board was set-up for the 5687's Only because i have a bunch of them. Say; what amp are you running this pre with?

Aikido 5678 PCB [message #9684 is a reply to message #9681 ] Mon, 29 May 2006 13:10 Go to previous messageGo to next message
Forty2wo  is currently offline Forty2wo
Messages: 163
Registered: May 2009
Master
Hi M, I looked over at Tube Cad, the 5687 pcb is set to use the 5687 in the output position only.
I have used the 6CG7/6FQ7 and 6N1P for the input stage, with very good success. But pretty much any of the usual suspects will be pretty much plug and play.

This has become my main line stage, crappy power supply and all. I use it with my DRD 45’s and I have recently converted my WE91 300b amps to a D3A front end. Sort of a cross between Damir and Bas H. I am using a anode choke rather than a CCS. This is still very much in the experimental stage. I have posted a little over at group build…John


Re: Aikido 5678 PCB [message #9685 is a reply to message #9684 ] Tue, 30 May 2006 11:45 Go to previous messageGo to next message
Manualblock  is currently offline Manualblock
Messages: 4973
Registered: May 2009
Illuminati (13th Degree)
Thanks John; thats a help. So you swapped out the CCS for an anode choke? That sounds good, can you say what made you make the change?

Re: Aikido 5678 PCB [message #9686 is a reply to message #9685 ] Tue, 30 May 2006 22:23 Go to previous message
Forty2wo  is currently offline Forty2wo
Messages: 163
Registered: May 2009
Master
No, I have yet to try the CCS. I had the chokes on hand and it was a relatively easy conversion…John

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