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Quick Start Guide
ACX-300.4
6. Protection LED -
This LED will shine if there is a problem being
sensed by the unit. See troubleshooting section for best practice
to determine the cause.
7. Gain Control 1/2 -
This control allows you to adjust the overall
output level for channels 1/2, with counterclockwise decreasing
and clockwise increasing. With the source unit set to 75%, adjust
this knob to the point where the Maximized light shines briefly.
This will be your optimal gain setting.
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
inner 2 wire connections labeled 1 and 4 on the included mating
speaker wire connector. 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.
8.
High Pass Crossover Frequency 1/2
– Since component speakers
are designed to reproduce certain frequency ranges, a crossover
allows you to match the speaker to the appropriate frequency
range. Speaker manufacturers list a recommended crossover
frequency in the speaker specifications so choosing the crossover
point they’ve noted will provide increased speaker reliability and
optimum sound quality. The ACX-4.300 amplifier has selectable
12 dB/Octave Linkwitz-Riley crossover points at 80 Hz, 120 Hz,
and a “bypass” option. The amplifier receives the frequency range
above the crossover point.
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