4
Quick Start Guide
6. RCA Analog Line-Level Inputs – The line-level outputs from
the head unit or factory installed radios can connect here, so the
ACM-4.300 will receive the line-level audio signals. Do not use the
speaker-level inputs if you are using the RCA line-level inputs.
7. Speaker-Level Output Terminals – These screw terminals
connect with speaker wire to your loudspeakers. Make sure that
the average combined speaker impedance does not dip below
2 Ohms per channel. Make sure that you follow the plus and
minus polarity markings on the ACM-4.300 and match it to the
polarity of your loudspeakers.
In Stereo operation, connect one loudspeaker to each channel as
shown. The minimum impedance is 2 Ohms per channel.
In Bridged Mono operation, connect one loudspeaker to the in-
ner 2 screw terminals ( Channel 1+ and Channel 2-) as shown. The
mono loudspeaker will receive the power from each channel, and
both channel inputs must be fed an input signal. The minimum
impedance is 4 Ohms. Connect stereo speakers to channels 3 and
4 as shown, or another Mono speaker.
Stereo x 2 Operation
2 Ohms Minimum per channel
+
+
+
+
Mono 4 Ohms Minimum
Stereo 2 Ohms Minimum
+
+
+
+
