Radio Road

RE: Yes, I was planning on....

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Triode_Kingdom

In Reply to: RE: Yes, I was planning on.... posted by Cougar on November 12, 2018 at 18:10:31

The problem with large coupling caps is overload recovery. And values like 1uF are completely unusable given the limited current capability of a 12AX7. My suggestion is to use higher quality parts, but don't try to out-engineer Fisher. Very few audiophiles are up to that task.

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Follow Ups:

RE: Yes, I was planning on.... - BFitz 08:02:33 11/13/18 (0)
All good points, but I wonder how much of a problem it would be, in the case of a KM60? Have you actually tried it?

I have a KM60 here, and like it's sound too. I actually measured the response in my lab, and posted it back in 2004. It is down a few dB at 20 Hz.

You can always do a trial by soldering an additional cap across the existing 0.1uF cap and listening. If you do only one channel and listen in mono, you can compare stock to modded on L versus R.
Just wanted to try what I had.... - Cougar 04:42:02 11/13/18 (0)
here in my stash box to see how that type of cap would sound before I ordered the correct value or parts. I totally hear what you're saying always try to use the same value parts.

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