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In the Forum: Audio Discussions
In the Thread: Another (outdoorsy) sweat spot?
Post Subject: Impedance and capacitancePosted by JJ Triode on: 5/12/2014
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Steverino, don't forget that Romy's Placette line stage has VERY low output impedance. It might be able to handle even the shunt capacitance of 75 feet of cable with minimal HF losses. If the cable is 100 pF/foot then its reactive impedance is about 1 k-ohm at 20 kHz. He then needs a preamp output impedance less than about 10 times smaller, or 100 ohm. As I recall, Romy said the Placett's impedance is around 10 ohm, so he should have very little rolloff.
By the way, I think it is very seldom that two wrongs make a right in audio.
Regards,
JJRerurn to Romy the Cat's Site