8
IMPORTANT: Because the cables carry low-level audio, only screened Cat 5 should be used, the foil screen of the cable being
bonded to the metal screening can of the plugs. If a BT-1 is being installed in very close proximity to the host unit, it may be
possible to use ready-made screened Cat 5 “patch” cables of short length. In all other situations, shielded RJ45 plugs should be
crimped onto the installed screened Cat 5 cable using the pinout shown below.
PIN USE Cat 5 CORE
1 Audio ‘cold’ phase (-) White + Orange
2 Audio ‘hot’ phase (+) Orange
3 Priority VCA control White + Green
4 + Vsupply Blue
5 0 V White + Blue
6 - Vsupply Green
7 Music level control (0 to 10 V) White + Brown
8 Music source select control (0 to 10 V) Brown
SCN GND ref for system music controls Connector shell
The audio streamed to the BT-1F module will be available in the Zone as soon as the module is connected to the host unit’s
Facility Port for that Zone. Audio fed into the Zone will be an (L+R) mono sum of the stereo audio streamed from the user’s
wireless device (e.g., smartphone, tablet, etc.). Audio volume will be controlled solely from the user’s device in the normal way
and will be unaffected by any of the host unit’s front panel controls.
* There is no reason why the module cannot be connected to the Facility Port of a Zone other than that in which it is installed – though this is unlikely to be
an common installation scenario.
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