AudioControl Epicenter 1200, Руководство по установке

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16. Gain Control – This control allows you to adjust the overall
volume output level in the normal way, with counterclockwise
decreasing the volume, and clockwise increasing. Note that the
ACR-3 gain control should first be set to maximum, before setting
this gain control. The setting procedure is given on the next page,
and involves nerves of steel, a steady hand, grit, determination,
and the thought that you are making the world a better place for
deep bass.
17. Polarity
– This switch allows you to select the polarity of the sub-
woofer, either 0 degrees (in-phase) or 180 degrees (out of phase).
This is useful if you are using two Epicenter amplifiers to run a
single subwoofer. (See the hookup diagram on page 11.)
18. Expansion Bus Mode – There are two positions: Source and Link.
This super feature allows multiple Epicenter amplifiers to be used
in a system, one as a master source and controller, and the others
as Links, getting their inputs from the master. (See pages 11 and
12 for examples.)
Source : the Epicenter amplifier receives audio input signals either
from its speaker-level inputs or the line-level inputs. The expan-
sion bus RCA output sends a line-level output (a preamp out) to
the expansion bus RCA input of the next Epicenter amplifier (set
to Link). This line-level output signal is affected by all the controls
of the first Epicenter amplifier.
Link: 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.
19. Source Clip LED
– The Epicenter amplifier features our MILC™
(Maximum Input Level Control) patent-pending level-setting cir-
cuit that prevents clipping and damaging distortion. It calculates
when the waveform of an incoming audio signal is clipping, and if
it is, this LED will fulfill its prime objective and shine forth.
With this advanced feature, you are able to optimize the level of
the incoming audio signal until the Source Clip LED is just-prior to
lighting. If the LED comes on during normal operation, you should
adjust the level of the audio signals before they reach the Epicen-
ter.
After an interview with the lead engineer included the words
“differential calculus,” and some hieroglyphics on a chalk board,
the technical writer’s eyes glazed over and he had to be brought
round with a nice cup of tea and a donut or two with sprinkles.
20. Gain Maximized LED
– This LED indicates when the Epicenter
amplifier gain has been maximized for optimum performance.
Chapter 5: Features