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In Reply to: These things are so system dependent... posted by viridian on May 24, 2020 at 22:11:35:
Increasing the capacitance is a totally reversable mod.
If you're a purist, replacing a selenium rectifier with a silicon one and adding a series resistor to provide the correct voltage technically makes it a modified unit because it no longer matches the schematic. Marantz most likely would have used higher capacitances in the power supply when the 8B was in production except for the high price and large size of higher capacitance cans in the days of yore. What they used nevertheless worked well, and that's what we have.
I think the mods that cause the devaluation are the ones involving significant circuit changes. Even a mediocre technician understands why someone increases the capacitor values in a power supply.
Scott
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Follow Ups
- RE: These things are so system dependent... - AA6U 22:41:35 05/24/20 (6)
- It has nothing to do with being a purist... - viridian 09:44:58 05/25/20 (3)
- RE: It has nothing to do with being a purist... - AA6U 13:28:23 05/25/20 (2)
- Many of my trading partners want just that.... - viridian 14:07:06 05/25/20 (1)
- RE: Many of my trading partners want just that.... - AA6U 14:12:44 05/25/20 (0)
- RE: These things are so system dependent... - airtime 07:01:03 05/25/20 (1)
- RE: These things are so system dependent... - AA6U 07:58:02 05/25/20 (0)