there were different runs of oscillator chips....
I did the upgrade for all 16 chips, sadly, one chip was a dud and I had to revert both chips in the "8th" cards to the original...
the new chips had a diode added to the circuit.. (been over 20 years), and the slope of the tuning to heat is different for each chip type...
the newer set is more stable, and doesn't shift as far with the warm up, I like getting the pitch bang on as far as the Octave calibration goes and if the adjustment is a little touchy and doesnt stabilise in full octaves, I stretch it a little during tuning so the lower octaves are a little flatter than the top octaves...? when the lid closes, the CS tends to drift? the lower octaves slightly sharp... keep that in mind.
when a string section tunes at the concert hall, the overall string section puposely tune flat and sharp the open strings so the overall section sounds lush...
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? Sure, that in a analog synth that is desirable, but for phasing effect between the channels we have detune function in the CS80, that is quite touchy so to use it effectively the tune between the channels should be almost perfect. That fact made my wonder is my CS80 in tune by standard therms.
