I've never used ‘lyrics for cathode bypass. I have heard surprising differences between films in the same amp, although I have not experimented extensively.
General DIY Questions/Answers
- Thread starter Wntrmute2
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I've never used ‘lyrics for cathode bypass. I have heard surprising differences between films in the same amp, although I have not experimented extensively.
It sounds to me like it's not the power supply that's the problem. It's that your amp is in essence still powered up after you turn it off via the can caps or something - don't know what amp this is. Maybe a bleeder resistor in your amp to discharge the caps after you turn it off? Or just a longer delay before powering off the power supply as @Wntrmute2 suggested.
I had been searching for and found this cap. Seem to be pretty reasonable in size.
Following Paul B's example, I replaced the 'lytic cathode resistor bypass caps with a big film caps in my Bottlehead Kaiju. I thought it resulted in a noticeable, albeit subtle, improvement in SQ. That was about a year ago and, with my poor memory, I can't be more specific about the nature of the improvement. Solen makes some pretty big MKP caps - that what I use.
cheers, Derek
If they fit, they can be a reasonable improvement, as that is a signal current carrying component.
I don't mean to send you down a rabbit hole or start a debate - but note that the cap you linked to uses a polyester dialectric. For those that believe that the dialectric material affects SQ, polypropylene seems to be the most recommended plastic type. I've not tested this and just gone with the flow and always used polypro. Here's a polypro Wima cap with the same specs and form factor: Wima Cap
cheers, Derek
I guess. Depends on the capacity and voltage. Build planning becomes more important. I think the effort and expense is worth it, but that is a personal decision made where uncertainty and bias exist.
One day in world where I have a breadboard hooked up to decent speaker I might do some experiments, FWIW.
Going to post this question here.
I saw in @Wntrmute2's preamp thread that if you have a 60hz hum it is not power supply.
I always thought that 60 was ps noise, so... what causes the 60hz noise?
I saw in @Wntrmute2's preamp thread that if you have a 60hz hum it is not power supply.
I always thought that 60 was ps noise, so... what causes the 60hz noise?
60Hz = filaments or ground loop; 120Hz = PS.
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