Application Guide

JBL Commercial CS SERIES
Application Guide
Cat 5 Cable
Generic Copper Wire
Mic/Line Cable
Speaker Cable
COFFEE SHOP
This small coffee shop has one zone. Employees use the CSR‐2SV remote to adjust volume and to select Satellite Music or their
own MP3 player as the source. Employees make announcements by pressing and holding the button on the CSPM‐1 paging mic
while they speak into it. The CSM‐21 mixer automatically ducks the music during announcements. The CSM‐21‘s ‘Page Assign’
pins ensure compatibility with microphones that contain a contact closure for muting the mic. Since the CSPM‐1 has an audio
mute switch and not a contact closure, the ‘Page Assign’ pins are simply shorted together for proper operation. The CSM‐21's
LevelGuard™ feature keeps the volume within an optimal range and AutoWarmth™ automatically adjusts to ensure full high‐
fidelity sound at all volume levels. The building’s fire alarm contains a normally open (NO) relay, which is connected to the ‘Music
Mute’ pins on the CSM‐21. Detection of smoke causes the relay to close, which in turn causes the CSM‐21 to mute the music
immediately. The mic is unaffected by the ‘Music Mute’ functionality, and employees can therefore use the CSPM‐1 to make
announcements during the alarm state if necessary. As a precaution against employees accidentally turning the mic volume
down too far, the ‘Mic Minimum’ control on the CSM‐21 front panel is set fully clockwise. This effectively limits the range of the
‘Mic’ level knob from ‐10dB to 0dB (i.e. the mic can’t be turned down past ‐10dB). True stereo audio is sent to a single pair of
wall‐mounted CSS‐1S/T speakers in 8 ohm direct mode, which are powered by a CSA‐2120 amplifier.
Satellite Music
Receiver
Fire Alarm Relay
MP3 Player
CSPM‐1
CSR‐2SV
CSM‐21
CSS‐1S/T CSS‐1S/T
CSA‐2120
Coffee Shop Zone
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