Bogen SI35A User Manual download pdf (Page 16)

TWK351 Wire Converter

The model TWK351 is an adapter used in instances where there is existing 3-wire (2-conductor + shield)

room wiring. The TWK351 cannot be used with the SCR25A module. If 3-wire operation using the

TWK351 wire converter is desired, CA10A call switches must be used (CA11A Call-In switches will not

work in this application).

To install the TWK351, simply insert it between the 9-pin connector labeled TO SWITCHBANK on the

rear panel of the MCP35A and the 9-pin control cable on the first SBA225 panel. Only one TWK351 is

required per system.

1/8 watt

1/4 watt

1/2 watt

1 watt

2 watts

4 watts

Common

Various wattage taps

Line-Matching

Transformer

8-ohm sec.

8-ohm spkr.

PRESS

TO CALL

MODEL

CA10A

BLK

RED

SBA225

SBA325

ANNUNCIATOR

LINE

SPEAKER LINES

WIRING DIAGRAM SHOWING

2-WIRE CALL-IN USING THE

TWK351

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

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Bogen SI35A User Manual Page 16