CAMBRIDGE QT-600 Instructions

The QT-600 has 2 auxillary inputs that can be used for either music or paging. This document will provide guidance for
making the proper connections and isolating problems with the set making the proper connections and isolating problems with the set-up.
The input connection is via a 3-pin terminal connector, balanced or unbalanced input with 40
line level input (6V max).
To connect to a music or paging source to input A or B To connect to a music or paging source to input A or B
1. Be sure power is OFF by unplugging power cord from wall outlet. Be sure power is OFF by unplugging power cord from wall outlet. Be sure power is OFF by unplugging power cord from wall outlet.

2. Balanced Audio Input:

(Most often, but not always the characteristic of paging
Connect signal wires to + and - at input A or B.
Connect the shield to GND at the audio source.

3. Unbalanced Audio Input:

A. Mono Signals:
Connect signal wire to both L and R. Connect
B. Stereo Signals:
Connect signal wires to L and R. Connect the ground wire

Trouble Shooting

If the volume of the paging system or music is too If the volume of the paging system or music is too low, there are a couple ways to test the settings of the Qt
Check the volume setting
The QT-600 is configured to mute both input A and B on delivery. Each zone has a volume level for these inputs. Set 600 is configured to mute both input A and B on delivery. Each zone has a volume level for these inputs. Set 600 is configured to mute both input A and B on delivery. Each zone has a volume level for these inputs. Set
the volume level to 30 Max) for each zone to the volume level to 30 Max) for each zone to test if the sound is being transmitted.
© Cambridge Sound Management, LLC | 404 Wyman St.
QT-600 Music and Paging Instructions 600 Music and Paging Instructions
inputs that can be used for either music or paging. This document will provide guidance for inputs that can be used for either music or paging. This document will provide guidance for
pin terminal connector, balanced or unbalanced input with 40K Ohm input impedance pin terminal connector, balanced or unbalanced input with 40
characteristic of paging systems.)
at input A or B.
the audio source.
(Typical of music systems.) (Typical of music systems.)
. Connect the ground wire to GND.
Connect the ground wire to GND.
Unbalanced
GND
signal
signal
low, there are a couple ways to test the settings of the Qt-600.
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Below are the Below are the Below are the
Balanced
Source
---
+
+
connection points connection points
for the QT-600 for the Q
GND GND
R R
_ or L _ or L
+
GND GND
R
_ or L _ or L
+
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