Yamaha preamp MC phono input gains and load impedance

[808_state]

Just wondering if any of the benchtop warriors here have actual measured numbers for the MC inputs on the various Yamaha preamps. It would be invaluable info for cart matching and future cart selection. The preamps in my possession are as follows:

C-2
C-2x
C-4
C-6
C-70
CX-1

Info for other units is certainly welcome. Also have you noticed variation from unit to unit (ie. by country or those with selectable voltage) or are they fairly consistent?

Many thanks in advance.
-808

 

[rcs16]

By numbers, I guess you mean specs? not many bother to measure this stuff, since you need some pretty good test equipment to do so.
I guess old audio magazine might have do some testing on the bench.

 

[808_state]

By numbers, I guess you mean specs? not many bother to measure this stuff, since you need some pretty good test equipment to do so.
I guess old audio magazine might have do some testing on the bench.

Yup, the guy who fixes my stuff explained how to do it but it requires more equipment than I have. If anyone has any old bench notes they are more than welcome to share. It's odd that they aren't listed in the owner's manuals nor in the service manuals I've downloaded.