Dnath is correct. These NOS JFETs from the 70s have been unobtainium for a long time, and John Curl is one of only two or three people who matched them by curve tracing them.
HELP HELP - VENDETTA RESEARCH SCP2A FAULTY
I recently purchased a Vendetta Research SCP2a phono stage - before i go on I am 100% certain it was sold to me without any faults, and that it may have been something else that was the problem -
HOWEVER!!!
I have a major problem
I used a step down transformer as recommended by John Curl so that I could run it off UK voltage which is 230.
I got a great sound out of my right channel - as it happened I only wired the ground to the left channel.
I checked the fuses (1 Amp) - but to be sure I went and got some replacements and put them in.
Once back on again there was a very faint signal out of the left channel alone - I replaced the fuses with the originals - just in case - same thing.
I tried it this morning - absolutely no sound at all -
I got a decent step down transformer from Maplins so that there would be ample overload protection.
I have emailed John Curl and await a response - I have also furiously e-mailed a few audio electricians in the UK - does anyone have an idea what the problem may be?
Alternatively is there anyone you know who may be able to resolve this?
Thanks
Lohan
HOWEVER!!!
I have a major problem
I used a step down transformer as recommended by John Curl so that I could run it off UK voltage which is 230.
I got a great sound out of my right channel - as it happened I only wired the ground to the left channel.
I checked the fuses (1 Amp) - but to be sure I went and got some replacements and put them in.
Once back on again there was a very faint signal out of the left channel alone - I replaced the fuses with the originals - just in case - same thing.
I tried it this morning - absolutely no sound at all -
I got a decent step down transformer from Maplins so that there would be ample overload protection.
I have emailed John Curl and await a response - I have also furiously e-mailed a few audio electricians in the UK - does anyone have an idea what the problem may be?
Alternatively is there anyone you know who may be able to resolve this?
Thanks
Lohan