4
Quick Start Guide
6. RCA Analog Line-Level Inputs
– The line-level output from the
head unit or factory installed radios can connect here, so the
ACM-1.300 will receive the line-level audio signals. The left and
right signals are summed internally to produce a mono subwoofer
signal. Do not use the speaker-level inputs if you are using the
RCA line-level inputs.
7. Speaker-Level Output Terminals
– These screw terminals con-
nect with speaker wire to the subwoofer, or multiple subwoofers.
Make sure that the average combined speaker impedance does
not dip below 2 Ohm. The ACM-1.300 has four connections (2 plus
and 2 minus). These four connections allow you to easily add a
second subwoofer in parallel, as long as the impedance of both
subwoofers is 4 Ohms or greater.
