EAR 834P Impedance?


Hi everyone, Happy Thanksgiving Day!

What impedance does an MC see when I use the MC input on my EAR 834P? It uses tranformers in that setting, so is it something other than 47K? Does anyone know of a way to change the loading?

Thanks
frogman
Doak - I read your post above with interest but find myself somewhat confused.

My translation of the above is as follows:

- Set to MM, the 834's impedence is 51K.
- Set to MC with the XF switched in, the nominal
impedence is = 125 ohms.

Is this correct?

Mike
I wonder where Dan came up with his MC values. Stereophile measured the 834P and found the following:
Set to MM, the 834P's input impedance was 49.7k ohms in the left channel, 51k ohms in the right. The input impedances for the MC setting were 515 ohms and 516 ohms (L&R). The output impedance measured 524 ohms in the left channel, 538 ohms in the right.
I asked the manufacturer for a definitive answer to the question.

From Dan Meinwald of EAR USA:
Many people speak without the knowledge to to back up their statements.
I don't know if Dan's comments were directed at Stereophile or someone else, but the fact remains that EAR doesn't provide an official impedance spec for the 834P in their product brochure or on their website. Stereophile took the time to measure these things in 1997. Their instruments saw an input impedance of 515 ohms and an output impedance between 524-538 ohms. Perhaps the newer version of the 834P has different values. Unless Dan can clear up this confusion, I'll side with instruments and methods that can be repeated and verified. I don't mean to stir up controversy, but if we can't rely on independent analysis of equipment, there's no point in discussing this.