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SOLD: Classic Solo V2 PCB built and working + toroidal transformer

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Humner

Well-known member
Joined
Sep 22, 2012
Messages
297
Location
Sydney Australia
I bought this from Ian (ruffrecords) many years ago + one of his custom made toroidal transformer for it.

Here is the original sales post from Ian - Classic Solo V2 PCB built and working

Its sat on my shelf, unused since then. I think its best to pass it on to someone who will actually use it. here is Ian's original description

"I have a Classic Solo V2 board surplus to requirements. This is the one I did all the hum tests on. It has a couple of cut tracks that I have now replaced with wire links. Completely built, no components missed out. All you need is a couple of 6922 tubes, enclosure, mains and output transformer and some XLRs and you are ready to go. Includes the Sowter 1948C custom mic transformer they make for me , complete working phantom and HT supplies and PCB connectors. Currently wired for 6.3VAC heater but links can be changed for 12VAC operation."

I paid 130 pounds including the custom made toroidal transformer and shipping. I will ask the same - $235aus shipped anywhere. Open to offers

I'm based in Sydney Australia.
 
Last edited:

Humner

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Joined
Sep 22, 2012
Messages
297
Location
Sydney Australia
Bumping this up with some photos, you can see where Ian scratched the trace and soldered back up with jumpers. Happy to take reasonable offers for this!
 

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sr1200

Well-known member
Joined
Dec 6, 2010
Messages
1,920
Location
Long Island, NY USA
Would love to know how "dirty" this thing can get. Everything thats in the rack right now is pretty clean or colored/pretty. Would love something warm-n-fuzzy (with more emphasis on the fuzziness). Maybe @ruffrecords (Ian) can elaborate. I read the original thread and was following it for a long time and completely forgot about it.
 

ruffrecords

Well-known member
Joined
Nov 10, 2006
Messages
14,559
Location
Norfolk - UK
It can get pretty dirty. It has two two identical stages with no negative feedback so the character is entirely determined by the tubes. Then there are two ways to configure the circuit of each stage. One way is as a mu follower. This gives slightly more gain and lower distortion. The other way is as an SRPP which gives less gain and a lot more distortion. I have used the SRPP configuration without negative feedback in the "tube tone" boxes I have built. The harder you drive this kind of stage the more tube colour you get. So you put a pot between the two stages to adjust the drive to the second stage (where most of the distortion is produced) and add a pot to the secondary of the output transformer to tame the output level.

Cheers

Ian
 

Ataùlfo

Altar is spiritual brotherhood
Joined
Jan 25, 2018
Messages
22
Sydney’er,

I’d accept with a unobstrusive add-on (pm me if still available, would you).
Bless up
 

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