[Brinkman]

Hello everyone,

I was digging through some old threads and came across a few where some adventurous tweakers were asking Jim about constructing a Cornet2 with variable Cut and Turnover knobs. I guess it would be like a tubed Bugle Pro or a stereo Monogram (Stereogram?) without the adjustable gain.
Anyhow, I am curious if anyone had used Jim's web calculators to calculate the R and C values required to do this with a 12AX7-based pre-amp.
I would really like to construct one myself, possibly with a Ripper USB in the back-end (as was brought up recently), and would really like to hear how far anyone's progressed with this particular scheme.

Best,
Benjamin

[hagtech]

www.hagtech.com/pdf/monogram.pdf

[Brinkman]

www.hagtech.com/pdf/monogram.pdf

Jim, did you redesign the Monogram around 12AX7s or was it always that way? I realize that the scheme on the monogram.pdf you linked to utilizes 12AX7s, but reading your reply in an older thread on a topic similar to this one gave me the impression the monogram used 12AT7s, and thusly required re-computed R and C values. Specifically, this thread here: http://www.audiocircle.com/index.php?topic=38774.0

Either way, progress is progress!

Best,
Benjamin

[hagtech]

It uses one X7, a T7, and a U7.  I think.  It's been awhile since I've looked at it.

jh