Level Adjustment; Inputs; Xlr Balanced; Rca Unbalanced - B&K ST125.1 Owner's Manual

Generally in a home theater application, volume level is controlled by the A/V surround processor. In a system for
use with the ST125.3, ST125.2 or ST125.1, adjustment of the volume level must be performed using the external
preamplifier/processor.
The ST125.3, ST125.2 or ST125.1, allows signal patch cables (interconnects) to be sourced from either balanced
or unbalanced line level preamplifier/processor outputs. A switch is used to configure a PAIR of AMPLIFIER
CHANNELS for use with either balanced (XLR) or RCA unbalanced preamplifier/processor line outputs.

XLR BALANCED

There are up to 3 balanced input connectors on the ST125.3, ST125.2 and ST125.1. These connectors accept
balanced line level output from the preamplifier's balanced output connectors.

RCA UNBALANCED

There are up to three RCA unbalanced input connectors on a ST125.3, ST125.2 and ST125.1. These connectors
accept RCA unbalanced line level output from the preamplifier's RCA output connectors.

LEVEL ADJUSTMENT

INPUTS

I N P U T 4 I N P U T 4
X L R ( B A L A N C E D )
R C A ( U N B A L A N C E D )
1 2
3
Balanced (XLR) connector
RCA connector
4
I N P U T 5 I N P U T 5
PIN 1 - GND PIN 1 - GND
PIN 2 - (+) PIN 2 - (+)
PIN 3 - (-) PIN 3 - (-)