Preamp tube layout in DSL 50 Q's.

[Mike M.]

Does anyone know the function of each of the 4, preamp tubes in a DSL 50 head? Is the preamp tube that is closest to the power tubes the phase invertor? I'm assuming it is but I'd like to be sure before I start to experiment with the preamp tubes. I'm curious as to what tube combinations other DSL 50 owners have tried so any suggestions are most welcome. Thanks.

[Robert S.]

Re: Preamp tube layout in DSL 50 Q's.

Mike, generally the preamp tube closest to the input jack is your first gain stage and the farthest from the jack/closest to the power tubes is the inverter.

Someone here must know the exact funtion of each.

[Mike M.]

Re: Preamp tube layout in DSL 50 Q's.

Mike, generally the preamp tube closest to the input jack is your first gain stage and the farthest from the jack/closest to the power tubes is the inverter.

Someone here must know the exact funtion of each.

Thank you, Robert. What you said makes sense but like I said, I just wanted to be sure.

[chill]

Re: Preamp tube layout in DSL 50 Q's.

Check the schematic at drtube.com in the Marshall section. I'd post the link but I can't get the site to load right now.

[PUCKBOY99]

Re: Preamp tube layout in DSL 50 Q's.

I think in the 3 tube Marshall set up, the furthest fromthe power tubes is V1, V2(P/I) in the middle & V3 closest tothe power tubes.

Yours being a 2 channel amp, V1 is probably the same & V3 is probably the V1 slot for the 2nd channel.....V2 & V4 might be shared by the 2 channels.


I'm guessing here, if you couldn't tell