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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: RFI from digital affecting other equipment posted by Tom Tripp on April 2, 2006 at 09:15:43:
Local broadcast RF noise sources can be picked up in the speaker circuit and get into the power amps through their output terminals. Most speakers have enough inductance to look like open-circuits at RF. Magnepans look like big antennas. This allows the speaker cable to act like an antenna, and the amp may be sensitive to RF entry through this port. RF noise goes wherever stray capacitance allows it to go, and mixes with the audio signal in nonlinear parts of the amp.I've had a lot of benefit from terminating my speaker cables with R-C networks, where the C is bypassed so that it works at the cable's fundamental resonance frequency (somewhere in the UHF), and covering them with Power Wraps to dampen their resonances.
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Follow Ups
- Yes, depending on the amp, the speaker wire is another antenna. - Al Sekela 14:24:16 04/02/06 (1)
- Re: Yes, depending on the amp, the speaker wire is another antenna. - amdan 23:35:14 04/10/06 (0)
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