The following are descriptions of the front panel functions (refer to figure 1).
NOTE:
When buttons are pushed in they are in the “on” position.
1. Power Button:
This button allows the amplifier to be turned on and off
manually or when kept in the “on” position and the Auto Button (see
figure 1, #2) is kept in the “on” position; the amp will automatically turn
on when it detects an incoming audio signal. The power indicator light
above the power button will glow when the amplifier is on.
IMPORTANT! The volume control should be set at the minimum setting
(all the way counter-clockwise) before plugging the amplifier into an
A/C wall outlet.
2. Auto Button:
This button, when in the “on” position, allows the amplifier
to automatically turn on when there is an incoming audio signal present
at either the “Line” inputs or “From Receiver/Speaker Level” inputs. For
this function to work properly, the Power Button must be left in the
“on” position. The light above the Auto Button will glow when the unit
is in “standby” mode. No other lights will glow.
3. Boost:
This button, when in the “on” position, will increase output at 25Hz
by 4dB. Use this button with discretion and caution as some subwoofers
may not be able to handle this extra boost. RBH does not recommend using
this feature with the following RBH products: SI-10, TS-10AN, or MCS-88.
4. Phase Control:
This knob changes the output phase of the amplifier.
Changing the phase will change the way the subwoofer(s) and main
speakers interact with each other at the crossover frequency. Typically,
this will be set to the 0° position. To operate, press then release the phase
button. While it is extended, adjust as necessary if any problem between
the subwoofer and main speakers exist. Press the button back in.
Introduction
Front Panel
Congratulations on your purchase of an RBH Sound Subwoofer Amplifier!
Your RBH Subwoofer Amplifier is the result of many years of research and
development dedicated to producing high quality power amplification for
home audio subwoofer systems.
This manual contains operating procedures for the RBH SA-200 and SA-400.
It is recommended you thoroughly read the material contained in this manual
before making any connections to your subwoofer amplifier. This will ensure
you have a good understanding of how to set-up and operate your subwoofer
amplifier for optimum performance.
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