Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Leevi on January 31, 2014, 02:51:30 pm

Title: motorboating tremolo
Post by: Leevi on January 31, 2014, 02:51:30 pm

I succeeded to get the tremolo ticking in my last project.
It's ticking even if the volume is off.

Do you have any tips how to eliminate that?

/Leevi

Title: Re: motorboating tremolo
Post by: phsyconoodler on January 31, 2014, 06:34:07 pm

Single ended with an EL84 and a 6V6? Clever!
  It's all about lead dress in your tremolo circuit.Moving wires around and also shortening wires to grids to start with.

Title: Re: motorboating tremolo
Post by: Leevi on February 02, 2014, 07:01:04 am

I tried many changes, I even changed the structure of the
tremolo circuit without result. Then I moved the tremolo to the cathode
of the first amplification stage which helped. I would say it works much better
there. Also a noise problem when turning tremolo depth disappeared
and no ticking at all.

/Leevi

Title: Re: motorboating tremolo
Post by: stratele52 on February 02, 2014, 08:34:52 am

A 0.022 cap connected to the neon lamp may stop it

Title: Re: motorboating tremolo
Post by: sluckey on February 02, 2014, 08:45:13 am

Quote from: stratele52 on February 02, 2014, 08:34:52 am

A 0.022 cap connected to the neon lamp may stop it

Where do you see a neon lamp???