Quote:
Originally Posted by Adam
One way with just two resistors (usually a few hundred ohms each) one on the R and one on the L tied together. The other with an additional resistor (of about 10x higher value) between the combined output and ground.
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It all depends on the output impedance of the source(s) you're using into the "combiner". A few hundred ohms is probably really a bit too low for most things. For low impedance outputs like found on most modern solid state gear I would think more like 1000 ohms minimum to about 4700 ohms maximum would be more appropriate and there should usually be no reason to put the additonal resistor to ground in most cases.
The outputs from older tube gear are often much higher impedance and would require higher "mixing" resistors to make a proper passive mixer/combiner as their output impedances can often be up in the hundreds of thousands of ohms.