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In Reply to: RE: Quality of caps posted by sherod on June 26, 2016 at 13:26:17
Not to start a was here but in "general", please note the qualifier, any film & foil cap like the poly styrene, or polypropylene, even mylar are better than a lytic. The ones in there now are 5% mylars. IMHO any film cap that gets you to the total capacitance required, for the size of the resistor, so you end up with 75Ás will be fine.
Let the flames begin.
Everyone has their favorite caps when it comes to sound. I'm aware that the factory caps are mylar, but I was only questioning if the cap was more crucial to audio vs. just a decent cap that had the required capacitance to combine with the resistor value to come as close to 75us as possible. I have ordered some polystyrene film and foil as that is what I saw you used. If the stock caps are on spec then I might just leave them in as the tuner sounds really good right now. I have read that mylar does have a tendency to go out of spec with age. That's my next project. Thanks!
No worries, rest assured that the flame quip was not directed at you, and to answer you question directly, which I failed to do , yes any polystyrene will do, the concern here is the total capacitance vs. resistance.
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