Twl, i doubt that it is the source overloading the preamp, as this would evidence itself at any volume setting. It would be passed down the line as lack of detail and separation of notes with everything sounding smeared.
The part about non-linear gain could hold water though and come into play with the gain curve of the preamp or power amp. Hopefully, both of those devices are linear enough that this is not a major factor. Otherwise, one would have a heightened sense of the system sounding OVERTLY dynamic on any music that varied intensity levels to a noticeable degree. Some people might think that this was initially great as you would experience a heightened sense of impact and slam upon dynamic transients, but i think that it would come across as being un-natural in the long run.
If Jimmy is up to it, he can simply unscrew the tweeter and disconnect one of the wires going to it. If the noise continues, he's obviously expecting too much from the woofer. If the noise disappears, that would mean that the tweeter is the source. As such, he'd probably be clipping the amp pretty hard or something in the high frequency circuitry is defective and crying out for help. Sean
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The part about non-linear gain could hold water though and come into play with the gain curve of the preamp or power amp. Hopefully, both of those devices are linear enough that this is not a major factor. Otherwise, one would have a heightened sense of the system sounding OVERTLY dynamic on any music that varied intensity levels to a noticeable degree. Some people might think that this was initially great as you would experience a heightened sense of impact and slam upon dynamic transients, but i think that it would come across as being un-natural in the long run.
If Jimmy is up to it, he can simply unscrew the tweeter and disconnect one of the wires going to it. If the noise continues, he's obviously expecting too much from the woofer. If the noise disappears, that would mean that the tweeter is the source. As such, he'd probably be clipping the amp pretty hard or something in the high frequency circuitry is defective and crying out for help. Sean
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