RCA mono summing adapter.

[laserman35]

I'm wanting to creat a mono channel to run 1 channel of my amp to the bathroom for music while I shower.
The quality does not need to be top notch so I'm looking at different options to do this cheaply.

Looking at RCA mono summing adapter or just cables to do this.

Never ran into this before and would like some opinions.

Thanks for your help.

[laserman35]

Looking for something premade. I found a diagram to wire this but If someone knows where I can buy this cable that would be great.



Unbalanced Summing Box

Figure 1 shows the required network for sources with unbalanced outputs. Two resistors tie each input together to the junction of a third resistor, which connects to signal common. This is routed to the single output jack. The resistor values can vary about those shown over a wide range and not change things much. As designed, the input impedance is about 1k ohms and the line driving output impedance is around 250 ohms. The output impedance is small enough that long lines may still be driven, even though this is a passive box. The input impedance is really quite low and requires 600 ohm line-driving capability from the crossover, but this should not create problems for modern active crossover units.



www.rane.com/note109.html

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[repeetavx]

You'll need a simple circuit like you've shown. Unfortunately what I found requires a battery. Here's a $33 solution from radio shack.