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RE: Slew rate, TIM hogwwash

Gusser

Transient intermodulation distortion was discovered by M. Otala (when he accidentally miswired a SS amp). He wrote a number of papers about it and he concluded that "...the ear seems to be very sensitive to it". A web search turned up a number of references to TIM but none stating that a TIM spec is a "useless attribute". If there is a threshold in volts per microsecond where improvements in slew rate and TIM become inaudible in an amp, then that would be good to know. Perhaps you can supply references to support this.

I agree that square wave testing is useful as a diagnostic tool, but that the square wave does not exist in the sound domain in nature. The Audio article (which I can't find) referenced slew rate and sine waves as I recall.

Paul

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