Tube Amps / Music Electronics
|For current discussions, please visit Music Electronics Forum.||New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!
|Listen to great tunes streaming live right now!|
|9/12/2003 1:41 PM|
|Bob DeRosa||Re: stupid question ?|
A Tweed Mixer is a way to isolate channels in a multi channel amp. The idea is to input each channel into one of the the two grids of a tube that has a shared plate resistor. This isolates the channels without using mixing resistors. I did some experimenting with mixing resistors and I didn’t like the tonal tradeoffs that I had to make so I tried the “Tweed Mixer” and it works really nice. It can even add gain/distortion if that’s what you want. In my Marshall clone I don’t mind a little gain so I’m using a 12ax7 but in my Matchless DC30 clone I don’t want to add any gain so I’m going to try a 12au7 (low gain factor) in an effort to isolate as transparently as possible.
FYI - The Tweed mixer is fully discussed in TUT1.
Hope this helps
|9/12/2003 3:45 PM|
|Chris ( CMW amps )
Bob : many thanks !
Now I can talk with fellow amp-techs .....
LOL ( just kidding ! )
I used to call it a Pro 5E5 / Twin 5E8A / Hiwatt-mixer and I'm using it in bf & sf Fenders for putting reverb on both channels .
I also did experience little or no tonal tradeoffs .
Have a nice & rockin' weekend !
|<<First Page||<Prev||Page 2 of 2|