Resistance mixer to give Ruby amp 2 inputs

[chieljan]

Just wondering, would this work to give my ruby amp 2 inputs instead of one? (so someone can jam along with me on the same amp EG)


"To build this circuit you need three RCA connectors and two 10 kohm resistors (R1 and R2). The resistors connect the audio signals (center connector) from inputs together to from one output signal. You can see the wiring details in the figure below:"


        INPUT 1 -------\/\/\/\---+
                ---+   R1  10K   +------------ OUTPUT
                   |             |       +----
        INPUT 2 -------\/\/\/\---+       |
                ---+   R2  10K           |
                   |           (shields) |
                   +---------------------+


When you have connected the audio lines together using the resistors, then connect the connect the connector grounds directly together using short piece of wire.

[brett]

Hi
that looks ok.
I've done a similar thing, so that I can mix an mp3 player in with my guitar signal.
Due to the high imput impedance of the Ruby, you can replace those 10k resistors with higher values if you'd like.  (e.g. 47k)
cheers

[chieljan]

Cool, I'll give it a try then! Thanks!