Bose FreeSpace 25 Handbuch für Installateure - Seite 9
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4.1
Electrical connections
Although the FreeSpace
®
system controller accepts balanced and unbalanced sources,
balanced sources provide better audio performance. Observe proper polarity when
making connections:
• The positive terminal is usually the high, tip, or plus (+) terminal, or pin 2.
• The negative terminal is usually the low, ring, or minus (–) terminal, or pin 3.
• The ground terminal is usually the shield, sleeve, or ground (
Note: The ground terminals are NOT safety grounds. They are for audio signals only. Do
not use these terminals as a substitute for a proper safety (earth) ground for this equip-
ment or other equipment connected to it.
From microphone or paging source (Figure 6):
1.
Connect the positive and negative terminals to the positive and negative terminals on
the controller.
2a. If the source has balanced outputs, connect the ground terminal to the ground
terminal on the controller.
2b. If the source has unbalanced outputs, connect the ground terminal on the controller
to the negative terminal on the controller. This will help prevent unwanted noise.
INPUT
Balanced
INPUT
Unbalanced
AM177675-2_04_V.pdf • May 7, 2002
) terminal, or pin 1.
CH A
CH B
PAGE
CH A
CH B
PAGE
4.0 Installation
CAUTION
Unplug all components before
making connections.
Figure 6
Connections from microphone or
paging source.
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