mux two input to one...

[MaXiZ]

Is possible to mux two input in one? Pratically from stereo to mono?
I need these becouse i've build a 4.1 system with a 3-way crossover and now i would like to mux the 4 low frequency of each crossover to one...
Do i need a special circuit o just i need to connect the 4wire (one per each xover) at the Power amplifier input?
THanx!

 

[sss]

to mix R and L
use the next circuit

 

[sss]

btw u dont have to use the op amp , that way u can mix as many channels as u want

 

[MaXiZ]

that way u can mix as many channels as u want

Which way? 🙂

 

[sss]

that way