combine stereo input for TDA 7294 single chips

[rifky]

i have problem here.😕

i have stereo input and single chip TDA 7294, how to combine stereo input for my chip amp????

 

[pacificblue]

Mixer Designs

 

[Minion]

Or get another chip ......

 

[sregor]

What's the source and what's the purpose. Usually can combine signals with a simple resistor matrix (each signal connects to a resistor which are joined together with another resistor to ground - the point where they come together is a mono signal. Drawback is if the first two resistors are too small - can affect the stereo separation (if it is still important) Second drawback would be lower signal level - but that is easy to adjust for. BTW, this is the most common method with most subwoofer amps. YMMV.