I’m trying to sum my car stereo output. Factory output has bass on one output and mid and tweeter on another output giving me 2 channels for left and 2 channels for right.
Ideally I’d like to sum them together and would of used something like a PAC LP7-4 however there doesn’t seem to have any availability in the U.K.
Is it possible to sum them by using 10k resistors and not cause any problems to the factory system?
