Specifications
b.5
mm
(3/8
IN.)
FIGURE
E.
SR102 COLUMN OVERALL DIMENSIONS
Direct Output
Strapping
To connect the SR102 or SR103 Columns for use
with direct (4- to 16-ohm) amplifier outputs or stand-
ard constant-voltage, 25-volt lines, proceed as follows.
The
SR102 Column rear panel contains a terminal
strip with six terminals (numbering, from left to right:
-,
4,
3,
2, 1,
+)
and two parallel-wired phone jacks
(see Figure G). The phone jacks are wired to corres-
pond with the strapping of the terminal strip. Posi-
tive and negative inputs are located at either end
terminal as marked. Note that the
SR103 Column rear
panel is identical except that it does not have phone
jacks.
Make sure the two straps connecting terminal
1
to
terminal 2 and terminal 3 to terminal 4 are in place.
This provides a total Column impedance of 16 ohms
(parallel internal wiring) with a power rating of 100
watts when operated from a 40-volt amplifier output.
When connected to a constant-voltage, 25-volt line
without a transformer, the Column will draw
39
watts.
The Column may also be connected in a "split"
configuration, either to provide redundancy-in case
of amplifier or speaker failure, the total Column output
will not be lost-or to provide for separate inputs
from different sources, for instance, from both paging
and background music systems. This is accomplished
by removing the strapping between terminals 2 and
3,
and connecting one input to the plus
(+)
and
3
termi-
nals, and the other input to the minus
(-)
and
2
termi-
nals (see Figure G). The impedance for each half of the
Column with this configuration is 32 ohms, and the
power rating is 50 watts. When connected to a 25-volt
line (without a transformer), the power drawn by each
4
half of the Column is 20 watts.
119
mm
(4-11/16
IN.)
I
L~~~~.
SCREW
5/16-18
X
1-1/2
a
FLAT
WASHER
(12
PLACES)
FIGURE F. SR103 COLUMN OVERALL DIMENSIONS
The Columns are designed to accept program ma-
terial resulting in power peaks up to 100 watts on a
continuous basis. However, sine-wave signals deliver-
ing 100 watts to a Column should be avoided in that
they present a much greater
average
power than does
program material. Consequently, when setting up or
adjusting a sound system with these Columns, avoid
the use of high-level, continuous-type test signals.
To insure safe operation of the Columns with pro-
gram material inputs, do not connect them to an am-
plifier with an output capability greater than the fol-
lowing:
1
Continuous
Power
To:
I
Voltage
Connection
(Direct
Output)
SPEAKER
COLUMN MODEL
511102
PAP
FOR
70
VOLT
LINE
64
OHMS
78
WATTS
FIGURE
G.
SR102 COLUMN REAR PANEL