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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: Re The Piezo effect on speaker wires and some posted by Steve Eddy on January 13, 2004 at 15:05:58:
Here's what I think happens:Your statement is correct for slowly changing signals that are well within the amplifier's bandwidth, but is not true for high speed pulses.
Since there is a time delay between input and output of an amplifier, any signal applied to the output will see only the amplifier's open loop output impedance until the signal has traversed the entire forward loop. At that time, a correction signal would appear causing the output to change and attempting to cancel the signal originally applied to the output. If the original signal has been removed (i.e. narrow pulse) I would expect some kind of damped overshoot as the loop re-stabilizes.
This may be moot if we are considering signals that are arriving at the output terminals as a result of a musical signal, since they are (by definition) within the bandwidth of the amp.
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Follow Ups
- Not quite.. - Commuteman 16:32:16 01/13/04 (14)
- Re: Not quite.. - Steve Eddy 17:14:12 01/13/04 (13)
- Ah, Steve..... - Commuteman 17:20:21 01/13/04 (12)
- Re: Ah, Steve..... - Steve Eddy 18:21:32 01/13/04 (11)
- I don't think so. - Commuteman 12:06:55 01/14/04 (10)
- Re: I don't think so. - Steve Eddy 13:11:12 01/14/04 (9)
- I still don't think so.... - Commuteman 13:30:44 01/14/04 (8)
- Re: I still don't think so.... - Steve Eddy 13:53:01 01/14/04 (7)
- Try explaining what happens - Commuteman 14:21:07 01/14/04 (6)
- Re: Try explaining what happens - john curl 15:06:32 01/14/04 (0)
- Re: Try explaining what happens - Steve Eddy 14:54:24 01/14/04 (4)
- OK, so we can stop now - Commuteman 15:18:19 01/14/04 (3)
- Re: OK, so we can stop now - Steve Eddy 18:48:13 01/14/04 (2)
- Find something else to argue about... ;-) nt - Commuteman 12:32:10 01/15/04 (1)
- NO! :) nt - Steve Eddy 16:08:45 01/15/04 (0)
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