Monster Power MPA 2250 Owner's Manual page 22

STEP 3 Speaker Connections
1. Connect one end of each speaker cable to the Left and Right speaker terminals on the MPA 2250.
Make sure to follow the markings for Positive and Negative to maintain proper speaker polarity.
2. Connect the other end of each speaker cable to the appropriate speakers. Make sure to follow
the markings for Positive and Negative to maintain proper speaker polarity.
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