I have a B&K LCR meter that can measure single digit pf.
Is cartridge optimal load capacitance typically less than 230pf? (220+10)
Would I measure at the cable RCA connector as described above, in order to read combined load capacitance of cable, R102, and TR101?
When you say "could affect the stability of the amplifier"...are you referring to the phono amp or the main amp? I have not (yet?) learned to use an oscilloscope so I would not want to do anything that could potentially introduce instability or oscillation, because I am not able to test for it.
Is cartridge optimal load capacitance typically less than 230pf? (220+10)
Would I measure at the cable RCA connector as described above, in order to read combined load capacitance of cable, R102, and TR101?
When you say "could affect the stability of the amplifier"...are you referring to the phono amp or the main amp? I have not (yet?) learned to use an oscilloscope so I would not want to do anything that could potentially introduce instability or oscillation, because I am not able to test for it.
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I meant the stability of the phono amplifier.
I haven't a clue what signal levels your LCR meter uses, so I would not dare to connect a cartridge or a phono amplifier to it. It should be fine for measuring the capacitance of just the cable.
As far as I know, the recommended load capacitance of moving-magnet cartridges varies a lot between different models. Some Shure cartridges require 400 pF to 500 pF, see https://www.shure.eu/productdocumen...serguide-74e6330437db0e04da83963aa33d3e58.pdf , but that is unusually high.
I haven't a clue what signal levels your LCR meter uses, so I would not dare to connect a cartridge or a phono amplifier to it. It should be fine for measuring the capacitance of just the cable.
As far as I know, the recommended load capacitance of moving-magnet cartridges varies a lot between different models. Some Shure cartridges require 400 pF to 500 pF, see https://www.shure.eu/productdocumen...serguide-74e6330437db0e04da83963aa33d3e58.pdf , but that is unusually high.
As an example of a cartridge with a much lower recommended load capacitance, Audio Technica recommends 100 pF to 200 pF for their AT85EP cartridge.
AT85EP - Cartridge | Audio-Technica
AT85EP - Cartridge | Audio-Technica