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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: RE: Marginally unstable amps posted by geoffkait on January 11, 2013 at 05:29:16:
No, i wasn't, but paralleling the driven line with another one at ground potential does shield the hot lead a bit more.
The first time i heard of the frame ground lead was from an old time audio acquaintance, Roger Grodinsky. My boss and i were invited to his house and among the things he demonstrated was grounding the speaker frame as descried.
He insisted it made a big difference, my boss (a physicist) said he wasn't sure and asked if he could try an experiment. We sat and listened as he connected and disconnected the ground and we couldn't hear a difference.
My boss and he switched places and my boss opened and closed the circuit out of sight behind the speaker and Roger couldn't tell either which was puzzling so we went on with other things..
The reason it doesn't effect the loudspeaker driver end at all is that the voice coil that is connected to the amplifier, is insulated by many megohms of air gap from the metal frame which receives no electrical power.
Do you know what a ground loop is.
Did you know that the current in a speaker line is always fully balanced, equal but opposite currents?
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Follow Ups
- RE: Marginally unstable amps - tomservo 16:45:13 01/24/13 (15)
- RE: Marginally unstable amps - geoffkait 06:03:16 01/25/13 (14)
- RE: Marginally unstable amps - tomservo 07:58:57 01/25/13 (2)
- RE: Marginally unstable amps - geoffkait 11:08:56 01/25/13 (1)
- RE: Marginally unstable amps - tomservo 08:40:12 01/26/13 (0)
- RE: Marginally unstable amps - 1audiohack 07:40:07 01/25/13 (10)
- RE: "Are those the only possibilities?" - geoffkait 10:45:16 01/25/13 (9)
- RE: "Are those the only possibilities?" - Tony Lauck 18:34:16 01/25/13 (8)
- RE: "Are those the only possibilities?" - geoffkait 01:32:24 01/26/13 (7)
- RE: "Are those the only possibilities?" - tomservo 08:43:45 01/26/13 (1)
- RE: "Are those the only possibilities?" - geoffkait 09:26:19 01/26/13 (0)
- RE: "Are those the only possibilities?" - Tony Lauck 06:22:39 01/26/13 (4)
- RE: "Are those the only possibilities?" - geoffkait 06:34:32 01/26/13 (3)
- RE: "Are those the only possibilities?" - Tony Lauck 06:55:19 01/26/13 (2)
- RE: "Are those the only possibilities?" - geoffkait 07:32:42 01/26/13 (1)
- RE: "Are those the only possibilities?" - Tony Lauck 07:42:15 01/26/13 (0)
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