Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kagliostro on March 14, 2023, 03:07:38 pm

Title: Is there an error on the dri201 Marshall schematic ?
Post by: kagliostro on March 14, 2023, 03:07:38 pm

V7 Cathode on the dr201 Is connected to nothing

I don't belive It can function without to be connected somewere

Question is, is missing a connection to the V6 Cathode and they share the same resistor and bypass cap or each Power tube has his own resistor and cap ?

Thanks

Franco

Title: Re: Is there an error on the dri201 Marshall schematic ?
Post by: sluckey on March 14, 2023, 03:42:30 pm

drawing error.

Title: Re: Is there an error on the dri201 Marshall schematic ?
Post by: mresistor on March 14, 2023, 04:00:02 pm

They were trying to save the customer 50% on EL84s - and keep the volume down.