P3 is for connecting the RIGHT speaker P1 is for connecting the LEFT speaker
Attach the speaker -ve terminal (often black) to
the - on the amplifier output
Attach the speaker +ve terminal (often red) to
+ on the amplifier output
Now select the output gain +20db or +26db by selecting the appropriate pin header position on P7.
Selecting +26db will result in louder volume overall but it also slightly increases the THD+N (Total
Harmonic Distortion plus Noise) figure and noise floor. DO NOT MOVE THIS PIN WHEN POWER IS
APPLIED.
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