Datasheet

coil serves as a low-pass filter to
average out the high-frequency
components. Do not try to use
this as a pre-amplifier.
The outputs of each channel are
"Bridge-Tied" with no connection
to ground. This means that for
each of the two channels, the +
and - alternate polarity to create
a single channel amplifier with
twice the available power.
However, that means you
cannot bridge R and L
together, so don't try to connect
ROUT to LOUT, it will damage
the amp! If you only need one
speaker, just connect to either
ROUT or LOUT and leave the
other output set alone
Connect your speakers using the
3.5mm screw-terminal blocks.
Gain:
Gain is configurable for 9, 12, 15
or 18 dB. For higher level outputs
such as from a WaveShield, you
will want to select a lower gain.
For low-level outputs such as
from an iPod or MP3 player, a
higher gain setting works best.
To set the gain, install the jumper
in one of the 4 marked positions
on the 4x2 header.
© Adafruit Industries https://learn.adafruit.com/stereo-3-7w-class-d-audio-amplifier Page 10 of 18