John Curl's Blowtorch preamplifier

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scott wurcer said:
I was fooling around with an interstage transformer directly driving a diff pair of 6L6's as a low power class A amp, using a fairly decent output tranny. I'm not much of a tube guy and come to think of it the lack of damping was probably as much of the problem as the transformer. I was going for simple; two tubes, two transformers, and a couple of resistors. I'm all the way the other way now, using a 15W class "D". 😱

I see you have no shame. 😀

se
 
john curl said:
Thanks Snoopy, that was my own personal preamp that was reviewed. However, SY doesn't think much of it, because I have not added a transformer to the output. You can please only some people.

It's ironic John that the "to die for" records used in this review were probably recorded through lots of tubes and transformers. I'm familiar with the Dick Shory record and last listened to it through a system tuned for old RCA's. To my ears it's WAY nicer than either of the Sheffield Labs drum or track records.
 
You are once again insulting a colleague of mine. I just can't participate in this sort of stupid put-down of my associates (and me). You have no right or understanding to do so. So why do you try to compromise me on the Blowtorch thread with your insinuations? That goes for SY too.
 
scott wurcer said:


My last transformer experiment was a dissmal failure (Edcor). It made everything sound like a stock Dyna MkIII. It was clear I would need to spend real money.

Just for the hell of it, here are some mic pre transformer comparison
wavs. They all use same discrete opamp and just the transformer is
changed between Lundahl, Jensen, Cinemag and Crimson.

http://www.thelisteningsessions.com/WAV/acoustic.adk.cinemag.wav
http://www.thelisteningsessions.com/WAV/acoustic.adk.crimson.wav
http://www.thelisteningsessions.com/WAV/acoustic.adk.jensen.wav
http://www.thelisteningsessions.com/WAV/acoustic.adk.lundahl.wav

When I first heard this, even through crappy PC speakers I was
amazed at the tonal change of the acoustic gtr.


T
 
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