Tube Amp Archive

I think a lot of builders don't take the transformer current rating into account other than to make sure it is as high or higher than is needed. Same goes for manufacturers; Tweed Bassman transformers are a great example, as most are flat wrong, typically around 30-50% too high. TM Interesting to h...

I think a lot of builders don't take the transformer current rating into account other than to make sure it is as high or higher than is needed. I think the answer to get the sag of a smaller transformer without having to use one is to measure the resistances from CT to each end of primary on the sm...

I have no experience with Dumbles or clones (I joined this site recently to learn more) but I do have with other amps. I have always preferred the tone in Fenders with smaller first filter caps such as a pair of 70, 80 or 100uFs. There is a technical reason for it too. The larger cap values filter t...

Hi, I am sorry but you cannot do any of the things in the way you have suggested without changing the sound of the amp. The best of your ideas is the one where you add a resistance (variable and switched in or out by relay) from the volume pot wiper to ground but this will tend to reduce bass, depe...

Hi, I am sorry but you cannot do any of the things in the way you have suggested without changing the sound of the amp. The best of your ideas is the one where you add a resistance (variable and switched in or out by relay) from the volume pot wiper to ground but this will tend to reduce bass, depen...