Operating Instructions
for your
REDGUM
Subwoofer Amplifier
The ON Rocker Switch is at the lower left of the front panel.
It acts as both a power switch and a RESET button/ overload
circuit breaker. When the
power is ‘on’
, the ON Switch is
rocked towards
RESET
and there is
no light showing
.
However, should an overload occur, the ON Switch will
light
up red
to indicate there is
no power
and that the switch
needs resetting. If this happens, you will find the rocker in
the
OFF
position. To reset the circuit breaker, rock the switch
towards RESET. The light will then go out and a ‘thump’ will
be heard as the subwoofer amplifier ‘powers up’. (If
preferred, the power can be controlled from the wall outlet or
a power board. To do this, leave the rocker switch in the
RESET/ power ‘on’ / “NO light!” position.)
Your REDGUM Subwoofer Plate Amplifier is designed to be
left ‘on’ when not in use, so that it is at operating
temperature immediately when required. The long-term
power consumption, is less than 5 watts – less than the
standby power of other auto-switch-on subwoofers!
On first ‘power-up’ after initial installation, it is wise to keep
the LEVEL control at minimum until your system is operating
normally, then slowly advance the LEVEL control until the
bass ‘fills out’. Be careful not to over-do it; the addition of a
subwoofer should be subtle, not furniture rattling! Once this
level is set, the overall bass will follow the volume control of
your receiver/processor.
The PHASE switch allows you to ‘invert’ the signal:
Switch Down: The output of the subwoofer plate is ‘in phase’
with the input to the plate.
Switch Up: INVERT or ‘out of phase’.
Depending on the design of your processor/amplifier, and
physical placement of the subwoofer, you may need to set
the PHASE switch to the INVERT position. This can be
checked whilst listening after your subwoofer is set up and
operating. Switch the PHASE switch to invert (UP) and
check for added ‘bass extension’ – lower, not louder! If there
is no noticeable difference, then your speaker setup
positions are not phase critical. If this is the case, the
PHASE switch can be left in either position.
The XOVER Control controls the frequency at which the
subwoofer begins to contribute to the bass. This is not
“rocket science’ and is not critical! It is more like “how much
salt does it take to make the soup taste right?”. Feel free to
experiment, but probably use your ‘midpoint’, (unless you
have access to acoustic test equipment capable of
measuring accurately to, and below, 20Hz!)
Plate Installation
Your REDGUM Subwoofer Plate Amplifier is designed and
manufactured so it can be directly installed into the wall of a
subwoofer cabinet without any further modification.
It is recommended to apply a sealing compound or foam tape
around the edges of the plate in such a way as to also seal the
screw holes.
If wished, the REDGUM Subwoofer Amplifier can be set up
separate from your subwoofer cabinet, but be aware that
dangerous voltages are accessible on the rear of the plate, so it
must be protected/enclosed in such a way that these voltages
are inaccessible, particularly to small children or pets.
*THIS IS AN IMPORTANT SAFETY CONCERN
*
S
peaker Connections
Make sure that your REDGUM
Subwoofer
A
mplifier is
disconnected from mains power before making any connection
to speaker terminals. Failure to do so may result in an electric
shock and/or damage to the amplifier.
There are 2 heavy speaker cables attached to the Subwoofer
Amplifier plate, one red and one black. The RED is POSITIVE
and connects to the Positive terminal on your subwoofer driver.
(This Positive terminal will be marked with a ‘+’ sign, or a
coloured dot of paint.)
Before turning on the power, check that wiring terminations
look neat and that no loose strands of wire are touching
another terminal. Failure to make neat connections may result
in poor sound or amplifier damage.
Input Connections
Connect either, or both of the input sockets on your REDGUM
Subwoofer plate to the connector marked Subwoofer on your
receiver, pre-amp or processor.
OR:
You can also connect the REDGUM Subwoofer plate’s Input
sockets directly to your unit’s pre-amp Output, as the REDGUM
Subwoofer Amplifier has all the necessary filtering to operate
from a ‘full range’ source.
The ‘volume’ outputs of these connections can vary widely so it
is advisable to keep the LEVEL control on your REDGUM
Subwoofer Amplifier initially at zero. Then, when your system is
playing normally, find a reasonable starting volume for the
subwoofer by advancing the LEVEL control very slowly.
If the available level is far too high or too low, the subwoofer
can be internally adjusted to suit your system. Consult your
dealer or contact REDGUM Audio Pty Ltd for information on
how this can be set.
Phase
Xover
65
Electronics by:-
220-240v AC Only
50-60Hz - 450Watt
On
Line In
13
5
20
H
z
20
0H
z
R
L
Model RGSW
Level
Warning!
Always check that your REDGUM Subwoofer
Plate Amplifier is disconnected from mains
power before making any input connections
to your other equipment.
Failure to do so may result in an electric shock
and/or damage to both the REDGUM Subwoofer
Amplifier and your other equipment.
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