Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kerobit on July 03, 2021, 06:35:32 pm

Title: Beltone Tremolo Depth?
Post by: kerobit on July 03, 2021, 06:35:32 pm

I've put this style of tremolo in an amp project I'm working on, as well as the same V1 cathode setup, and I'm trying to figure out if its possible to increase the depth/intensity? I've been changing resistor values on a decade box but can't seem to find anything that makes it larger? It may have a higher limit based on the tube itself since its wiggling the bias?

Title: Re: Beltone Tremolo Depth?
Post by: PRR on July 03, 2021, 11:03:35 pm

Try making the 250K at "C" 100K.

However this is basically as cheap a trick as will work at all. It may be greedy to also ask for "more".

Title: Re: Beltone Tremolo Depth?
Post by: kerobit on July 04, 2021, 01:49:36 pm

Thanks I'll give that a go.

I also realized I'm running a 12ax7 in parallel for the first stage thats being wobbled, so I may need to change the cathode resistor/cap values to make it run better with that setup as well.

Update: That seems to have done the trick a little bit! Got enough that its at least useful now. Thanks!