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Re: PVA Standard Audio Passive Pre-Amplifier

Posted by Steve Eddy on March 25, 2007 at 21:16:52

In Reply to: Re: PVA Standard Audio Passive Pre-Amplifier posted by Paul Joppa on March 25, 2007 at 19:23:25:

It may be wired for a whopping 600 ohms ... seems more likely to be well driven from an opamp that way.

I'm pretty sure the "75 to 600 ohm" is referring not to the PVA's input impedance, but rather the output impedance of the source driving it. It's a 1:8 step-up with a 10k load. That translates into a little over 150 ohms plus some wire resistance.

se

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