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Old 18th June 2004, 08:16 PM   #1
sardonx is offline sardonx  Canada
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Default A question on crosstalk

Would the difference between an amp with say 78db crosstalk and another with 90db crosstalk be audiable at all?
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Old 18th June 2004, 08:38 PM   #2
K-amps is offline K-amps  United States
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I'd say depends on the spectrum of noise.... but very little difference unless you have Klipschorns.
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Old 19th June 2004, 12:51 AM   #3
sardonx is offline sardonx  Canada
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thank you k-amps
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Old 19th June 2004, 12:54 AM   #4
sardonx is offline sardonx  Canada
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I mainly ask because my pre-amp has a crosstalk measurment of 105db. And the amp I want to get is a perfect match in all respects except it has a seperation of 78 - 85db. I don't want to degrade the sound in any noticable way.
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Old 19th June 2004, 08:39 AM   #5
dnsey is offline dnsey  United Kingdom
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I wouldn't worry abt it.
There are many who consider that a little crosstalk is a good thing for imaging. It's used commercialy in the Frankenstein enhancer, which was generally well reviewed.
Some of the best imaging I've come across was from an old Armstrong tube amp with clearly audible crosstalk.
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Old 22nd June 2004, 12:35 AM   #6
sardonx is offline sardonx  Canada
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thank you, dnsey.

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Old 22nd June 2004, 12:45 AM   #7
Eva is offline Eva  Spain
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Listening rooms usually have only -1 dB or so crosstalk

Anyway, most crosstalk found in power amps is usually due to poor PSRR [or poor layout and/os ground loops] and this is a more important issue [poor crosstalk usually comes together with poor PSRR at midrange or trebble, and I'm not talking about rejecting 100Hz buzz but about rejecting the ripple the own power amplifier circuit creates on its power supply rails and/or the voltage drops it creates on its own circuit tracks]
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