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In Reply to: Re: V-Cap roller coaster ride posted by Duomike on March 27, 2007 at 23:41:00:
It was good, but bi-amping with no capacitor was even better.Teflon caps, like most other caps, have buzzing issues when used at high signal amplitudes.
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I've not seen any bigger than 1uf.
Haven't seen them in a while though. Ask eBay seller Gintaras Sakenas (kw tubes) or others who sell teflon caps, maybe they have some or can special order them for you.
I don't think this is the case, otherwise Von Scheikert wouldn't use them in his VR9 speaker.
Took the plunge and ordered 2 x 3,3mF today for my tweeter XO. Crazy expensive I know but this is a crazy hobby!
Duomike
Could potting caps lessen/eliminate this "buzzing"? I have never heard it, but then again I have never attempted to test caps for signatures.
is not audible by itself, unless you put the cap very close to your ear. The problem is that buzzing modulates the electrical signal that capacitor passes, which causes audible distortion from the tweeter.In my experience, encasing Russian teflons in wood or silicon does little to solve the buzing problem. Same with removing a cap from the steel case.
Russian K40 oil and most varieties of silver mica capacitors are the only 2 types that do not buzz, AFAIK.
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