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 |
| 8-ohm sec. | | 1 | watt |
| | | 2 | watts |
| | | 4 | watts |
| | | Common |
| 8-ohm spkr. | Line-Matching | | | |
| Transformer | Various wattage taps |
| |
| | |
| WIRING DIAGRAM SHOWING | | | |
| 2-WIRE CALL-IN USING THE | MODEL | | |
| TWK351 | | | |
| | CA10A | | |
| | BLK | | | |
| | RED | PRESS | | |
| | | TO CALL | | |
| SBA225 | | SPEAKER LINES | | |
| | | | |
| OR | S | | | |
| SBA325 | | | | |
