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In Reply to: RE: Pigtails speaker terminal noise filter posted by barondla on September 24, 2022 at 14:59:43
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I can hazard a guess. Based on the little strings that can be moved around to null resonances I would assume that they are trying to null "noise". I could not begin to understand how the non-circuited wire could differentiate speaker signals from noise or how it would be made to resonate as there would be no potential through the section of wire. Possibly the noise/signal to null is outside of the 20-20kHz band.
The other invention on the site is a capacitor bridge across the speaker terminals. Using a speaker impedance of 8 ohms, a capacitor of 0.10uF would match with the stated impact at 200,000kHz. This is intended to deal with the RF energy picked up by the speaker wires. The only issue I see is that most speaker crossovers already have capacitors in them which would accomplish the same task.
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I don't have as much RFI in the basement and my Quads have an input transformer so although the price is low I'm thinking I don't need them
Think the idea is to keep noise collected by the speaker wires from entering the amp. The Quad transformers would stop noise from entering the speakers, but not protect the amp.
Thanks,
barondla
I'm deep in a basement but I may try it and see
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