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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: many possibilities posted by Quest on April 6, 2002 at 12:00:35:
(1) metal films picking up stray EMI by induction.(2) noisy switch contacts.
(3) improper switching attenuator grounding or missing a shield.
The attenuator is open frame, ceramic mil-spec type, so it doesn't have a shield. But it is with in the shielded case of the amp.
How likely is (1)? I could replace all the resistors is carbon, but are carbon resitors that much better in this regard. Perhaps it is the inductance of the 8cm of lead wire from the attenuator to the amp in combination with the resistors?
-R
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Follow Ups
- Re: many possibilities - rmurdey 16:28:05 04/06/02 (2)
- depends - Quest 16:51:22 04/06/02 (1)
- magnetic interference? - RJM 17:35:36 04/06/02 (0)
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