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Summing both outputs with resistors

Posted: Mon Nov 19, 2018 7:17 am
by Aion
Dear Frank,

Some FV-1 users sum the both analog output voltages with two 1k resistors. Just one lead of the 1st resistor to the L output, one lead of the 2nd resistor to the R output. The both resistors ends are soldered together and go through a DC blocking capacitor to the input of an non-inverting operational amplifier.

Is such solution correct? I see in the table on page 3 of the FV-1 datasheet, that the minimum "Allowable load resistance" is 10 kohm.

Let's assume, that the FV-1 is running its internal Reverb1 or Reverb2 program.

Thank you in advance.

Re: Summing both outputs with resistors

Posted: Mon Nov 19, 2018 6:20 pm
by dientutrongtoi
that is mono output. not stereo

Re: Summing both outputs with resistors

Posted: Wed Nov 21, 2018 11:03 am
by frank
I don't generally recommend summing the outputs but it sounds like a basic summing amp configuration and is probably OK.