[tommythecat_80]

Hi,
I have older model mp573,rev 1.4. How to change the input impedance to 300ohms? Via jumper?

Thanks
Tommy

[JPK]

Yes, via jumpers:
The jumper header is JMP1, near the input transformer, near C31.
Standard 1200 setting (1 jumper) :
o o-o o
300 setting (2 jumpers) :
o-o o-o

[tommythecat_80]

Thank you for quick answer! Problem solved..
I wonder was the second jumper included the kit? I didnt built the unit

[tommythecat_80]

Or can I use the jumper on the Eq socket? Not gonna connect the Eq any time soon.

[JPK]

I wonder was the second jumper included the kit?
It isn't.

Or can I use the jumper on the Eq socket? Not gonna connect the Eq any time soon.
The jumper on the MP573-CN1 is needed when the EQ is not connected.

Jumpers