Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: shooter on August 02, 2016, 12:04:20 pm

Title: inside the tube "cross-talk"?
Post by: shooter on August 02, 2016, 12:04:20 pm

I'm sketchin up a 2 channel pre, should I *try* to keep each channel inside each physical tube?  Is there likely to be *channel* cross-talk if I use say V1a NOR in, V1b NOT-NOR in?  Fender didn't seem to care much, but not sure if that was engineering or cost.

I don't plan on "sharing" parts like common cathode R's, etc. between tube halves.

thanks

Title: Re: inside the tube "cross-talk"?
Post by: sluckey on August 02, 2016, 12:14:56 pm

Layout will likely be simpler if you keep each channel inside each physical tube, at least the style layouts I do would be simpler. I would not be concerned about crosstalk.

Title: Re: inside the tube "cross-talk"?
Post by: shooter on August 02, 2016, 08:36:55 pm

Quote

Layout will likely be simpler

Thanks Steve, layout is coming, I'm up to 6, maybe 7 tubes in the pre!

Quote

I would not be concerned about crosstalk

ok,I'll forget by morn :laugh:

Title: Re: inside the tube "cross-talk"?
Post by: hesamadman on August 03, 2016, 09:10:09 am

I have been studying and working hard on a 2 channel amp. Would love to see your progress.

Title: Re: inside the tube "cross-talk"?
Post by: shooter on August 03, 2016, 11:01:12 am

Here's the input, 1st mix, no values, no math...yet.  haven't settled on each *node*.  I have a plexi style amp and love the bright - normal mixing, and as others have stated, they suck individually, but mix together quite well.  The *bottom* channel will have trem n verb.  each channel will continue through their own TS and recovery stage, then get mixed down before final pre-out driver.

The concept-idea is to have * a salesman sample* from days of 'old.  "oh, you like channel 1", $29.95!
It's still summer, so progress is slow, still finalizing my last build, yadeda.
Thanks for the interest.