Selecting The Speaker Output Mode; Balanced / Unbalanced Input; Using The “Balanced” Rca Input - Soundstream RUBICON 204 Owner's Manual And Installation Manual

SELECTING THE SPEAKER OUTPUT MODE

Channels through 4 of the RUBICON204, 404 and 604 amplifiers have the
ability to operate in any one of the following modes:
Stereo @TACT); Use this mode for stereo operation (left and right channels).
Bridged Mono; Use this mode to get a bridged mono output while using only the
right channel input and gain control per pair of channels (for use with a singular
mono input.)
Please follow the wiring schemes below for the correct operation:
BRIDGED MONO
L+
MIXED MONO
S T E R E O
R +
ST
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INSTALLATION STEP 2

BALANCED / UNBALANCED INPUT

The RUBICON amplifier has the ability to accept either a standard Unbal-
anced RCA signal input, or a Balanced "Pro Audio" style input signals with the use
of the Soundstream BLT Balanced Line Transmitter or some other balanced line
audio source.
Before installing your system, you should decide upon which
signal type you wish to run. There are advantages to both:
1. Most preamplifier /
source units have
Unbalanced RCA outputs
ADVANTAGES
(Industry Standard).
2. No Interface module is
necessary.
The RUBICON amplifiers' signal inputs accept a wide range of input level: from
300 mVrms to 5.0 Vrms for both Balanced and Unbalanced inputs. For the best
S/N Ratio, we recommend that the input level controls be set as far down as
possible (rotated counter-clockwise), while maintaining an acceptable level of
output.
Using the "Unbalanced" RCA Input
When using the Unbalanced RCA input, the RlGHT channel input signal switch
MUST be in the "UNBAL" position. Also, when first installing the amplifier using
this input configuration, we suggest that the left channel input signal switch be in
If you
the "UNBAL" position as well. experience alternator
lation noise with both switches in the "UNBAL" Dosition, trv movinq the LEFT
channel inout sicanal switch to the "BAL" position. This should remove any
system noise due to the installation.
Using the "Balanced" RCA Input
When using the Balanced 6-pin DIN audio input, both switches MUST be in the
"BAL" position. Also, we recommend that when using this input configuration, the
input level controls be set to the "minimum" position (rotated counter-clockwise).
The system gain should then be adjusted on the BLT Balanced Line Transmitter,
other other balanced line audio source. For the pin configuration, see the dia-
gram below:
is the view looking into th
Balanced input jack on th
BALANCED INPUT
Improved Signal to Noise Ratio
(S/N Ratio).
2. Excellent noise cancellation
characteristics.
3. Immune to noise radiated in
the car audio environment.
wine or other instal-
Volts
Signal
Shield
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I