Technical Notes; Connecting A Horn Speaker; Direct Working - Access k3507 Technical Training Manual

TECHNICAL NOTES

CONNECTING A HORN SPEAKER

•
An optional horn speaker (nominal impedance 8
Ringer to provide a "directed" audible output. The in-built speaker is disabled if an
external speaker is used.
Two steps are involved to connect an external speaker:
P2
1 2 3 4
External
Line
Speaker In
J1
INT
A
B EXT
Speaker

DIRECT WORKING

J2
Test
Direct
(1) Strip the conductor ends, insert them into connectors 1 & 2
(EXTERNAL SPEAKER) on the left-hand side of the blue-
coloured screw-terminal block and tighten the two screws.
(2) Move the link on jumper J1 to the "EXT" position (the lower
two pins).
If the ringer needs to operate from a DC source instead of AC (as
sometimes occurs when using the "alarm contacts" from a PBX)
jumper J2 must be bridged
Ω
) may be connected to the Tone
6