Audiocom audio connection, Clear-com audio connection, Other 2-wire audio connection – RTS SSA-424A User Manual

Page 11: Wire audio connections

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2-Wire Audio Connections

NOTE: The SSA-424A features internal DC isolation. You
can therefore connect to the SSA-424A to powered TW
cables, and it will not draw any power from the TW system.

On the SSA-424A front panel: For System A and System
B, set the 2W CHAN SEL switch to the appropriate
position. To interface to TW channel 1 select position 1;
for TW channel 2, select position 2.

NOTE: If the System A or System B will not be used, set the
2W CHAN SEL switch to the OFF position and attach a
dummy load to the TW XLR connector.

Audiocom Audio Connection

You can directly connect standard Audio 1-channel
cables. Connect one Audiocom channel to the J1A
connector on the back of the SSA-424A (System A).
Connect a second Audiocom channel to the J1B
connector (System B). If your Audiocom system uses
2-channel cables, use a JB-2 Junction Box to split the
channels (Figure 4)

NOTE: The SSA-424A features internal DC isolation. You
can therefore connect the SSA-424A to powered Audiocom
cables, and it will not draw any power from the Audiocom
system.

On the SSA-424A front panel, set the 2W CHAN SEL
switches for System A or System B to the BAL position.

NOTE: If System A or System B hybrid will not be used, set
the 2W CHAN SEL switch to the OFF position and attach a
dummy load to the TW XLR connector.

Clear-Com Audio Connection

Use standard Clear-Com 3-pin cables. Connect one
Clear-Com party line to the J1A connector on the back of
the SSA-424A (System A). Connect a separate Clear-
Com party line to the J1B connector (System B).

NOTE: The SSA-424A features internal DC isolation. You
can therefore connect the SSA-424A to powered Clear-Com
cables, and it will not draw any power from the Clear-Com
system.

On the SSA-424A front panel, set the System A and
System B 2W CHAN SEL switches to position 2.

NOTE: If the System A or System B hybrid will not be
used, set the 2W CHAN SEL switch to the OFF position and
attach a dummy load to the TW XLR connector.

Other 2-wire Audio Connection

Use the J1A connector on the back of the SSA-424A to
connect one 2-wire line to the System A hybrid. Use the
J1B connector to connect a second 2-wire line to the
System B hybrid. The pin configuration for the J1A and
J1B connectors depend on whether you are connecting a
balanced or unbalanced 2-wire line, as follows:

FIGURE 3. Using a TW-5W to connect to two TW channels to the

SSA-424A

PUSH

AUX

J4B

J3B

J2B

J1B

J1A

J2A

J3A

J4A

AUX

4 WIRE SYSTEM

2 WIRE SYSTEM

Telex Communications, Inc., Made in U.S.A.

RTN

+5V

RTN

+15V

-15V

-15V 0.3A

+15V 1.6A

+5V 3A

J5 POWER

TW-5W

SSA-424A

FROM RTS TW

INTERCOM SYSTEM

TW CABLE PIN-OUT

PIN 1 COMMON
PIN 2 CH 1
PIN 3 CH 2

FIGURE 4. Using a JB-2 Junction Box to split a 2-channel

Audiocom cable into two 1-channel cables.

LINES 1&2

LINE 1

LINE 2

JB-2

SSA-424

CH 1 AND 2

FROM AUDIOCOM