Tremolo cap question

[BobRuth]

I don't know if it is goofy or not.....but I'll ask....  does any type of capacitor in particular make a better cap for tremolo in an amp?   I have to replace 3 .05uF caps and just wondering what the world likes for these....

[sluckey]

Those caps are not in the signal path. I'd use any low cost caps I had, ie, ceramic disc, Mallory 150, Hoffman's Xicon, etc. Certainly would not use any expensive BOO Teak caps.

[PRR]

Vacuum tube LFO caps must be high voltage. 200V is marginal, 400V is much wiser. (Only the one off the plate needs the big voltage, but the middle one is only somewhat less, and we typically buy all three the same.)

Myself I would avoid the many ceramic types. Their effective capacitance can vary 50% with the voltage applied. This could affect wave-form and starting. Yes, many classic trems did use three ceramic disks. My impression is that over the last 20 years high-uFd ceramic has "improved" (more uFd/$ or uFd/size) in a way we may not like.

Any of the plastic-film with enough voltage rating should be fine. Cheap paper would be fine except any paper-cap sold today will be exotic audiophile caviar. Electrolytics need special concern, but are not common in tube-trem values.

[BobRuth]

Excellent.  I very much appreciate the advice.