AudioControl Epicenter 1200, Installation Manual

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5. Speaker-Level Inputs
– The Epicenter amplifier is supplied with
a standard greenish plug that allows for easy installation and
removal. The speaker-level output from amplifiers and factory
installed radios can connect here, so the Epicenter will receive the
audio signals and do its subwoofer thing. The left and right audio
signals are summed internally to produce a mono subwoofer sig-
nal. Always use the full frequency range outputs of the head unit
or radio, otherwise the Epicenter may be missing some important
bass information. Make sure that you follow the plus and minus
polarity markings on the Epicenter and match it to the polarity of
the speaker wiring. Do not use the RCA Line-level inputs if you are
using the speaker-level inputs
6. RCA Analog Line-Level Inputs – The line-level output from the
head unit or factory installed radios can connect here, so the Epi-
center will receive the line-level audio signals. The left and right
signals are summed internally to produce a mono subwoofer sig-
nal. Always use the full frequency range outputs of the head unit
or radio, otherwise the Epicenter may be missing some important
bass information. Do not use the speaker-level inputs if you are
using the RCA line-level inputs.
7. Expansion Bus Input and Output
– These two RCA connectors
allow multiple Epicenter amplifiers to be used in a system, with
one as a Master source unit whose controls can affect all other
Epicenter amplifiers in line. A switch in the control section under
the top lid, allows the Epicenter amplifier to be set to Link or
Source. Pages 11 and 12 show some charming illustrations of two
Epicenter amplifiers using the Expansion Bus.
If set to Source, the amplifier gets its audio input signals either
from the speaker-level inputs or the line-level inputs, and all
its controls work normally. The Expansion Bus output sends a
line-level output (a preamp out) to the Expansion Bus input of the
next Epicenter amplifier. This output signal is affected by all the
controls of the first Epicenter amplifier.
If set to Link, then the Epicenter amplifier gets its audio input from
the RCA Expansion Bus output of the first Epicenter amplifier, and
this first one can control all linked amplifiers.
8. Remote Control Connector – This connects to the ACR-3 remote
control and allows you to remotely control the bass level and the
Epicenter effect level.
9. 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 1 Ohm. The Epicenter 600 has two connections
(plus and minus) and the Epicenter 1200 has two of each (two
plus, in parallel, two minus, in parallel).
Chapter 5: Features