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RE: Output Coupling Caps updated for Marantz 7

76.90.100.230

Tre'

In Reply to: RE: Output Coupling Caps updated for Marantz 7 posted by Chip647 on January 30, 2025 at 07:03:12

If you are 3db down at 14Hz then you are 1db down at 28Hz with phase shift all the way to 140Hz.

If you want (and some people don't) 20Hz totally un-disturbed by the high pass filter, then the 3db down point of that filter needs to be 2Hz.

Same is true at the other end. If you want 20kHz un-disturbed by a low pass filter, then the -3db point needs to be 200kHz.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

Follow Ups:

RE: Output Coupling Caps updated for Marantz 7 - Tube747 04:56:50 02/03/25 (0)
I found this web and the author actually put 4.7uf for output coupling, and increased the other coupling value to 1.2uf
- Clone Marantz 7 (Open in New Window)
RE: Output Coupling Caps updated for Marantz 7 - Tube747 14:15:25 01/31/25 (0)
I decided to use 0.22uf. Thanks all!

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