JBL CSA2120, CST 2120 Transformer kit 70/100В для CSA 2120 JBL_Commercial_Solutions_Series_Application_Guide_v1.7_EN.pdf

Commercial Solutions Series

APPLICATION GUIDE

JBL Commercial Solutions SERIES

Application Guide

The JBL Commercial Solutions Series consists of paging microphones (CSPM), mixers (CSM), remotes (CSR), amplifiers (CSA),
transformers (CST), and speakers (CSS)—all designed to work optimally with one another as a true system solution.
However, Commercial Solutions Series devices can still be used in systems containing products outside the Commercial
Solutions family. This Yoga Studio application guide serves as an example of such a system.

Generic Copper Wire
Mic/Line Cable

CSM‐21

Rackmount

CD Player

JBL EON 315

AKG

C 544 L

JBL EON 315

AKG

PT 470

AKG

SR 470

This yoga studio has one zone. On the front panel of the CSM‐21 mixer, there are two sets of EQ controls: one that affects the
music, and another that affects the mic. This allows the instructor to EQ each type of audio source independently. For example,
turning up ‘Treble’ in the ‘Mic EQ’ section will add intelligibility to the sound of the instructor’s voice without affecting the music.
As the instructor speaks into her mic, the CSM‐21 automatically turns down—or “ducks”—the music. On the CSM‐21 front panel,
there are two important controls that affect the ducking behavior. ‘Trigger sensitivity’ determines how strong the mic signal
needs to be in order for the music to start turning down. ‘Ducking Depth’ determines how quiet the music gets. In this case,
‘Ducking Depth’ is set closer to OFF (approximately the 9 o’clock position), which results in the music being turned down only
slightly as the instructor speaks. This slight reduction in music level allows the students to hear the instructor’s voice more
clearly, while still preserving the mood created by the music. ‘Page Assign’ pins ensure compatibility with microphones equipped
with a contact closure for muting the mic. Since the wireless mic does not have a contact closure, the ‘Page Assign’ pins are
simply shorted together for proper operation. The ‘Select’ knob is set to 1 (to select the CD player), and the ‘Level’ and ‘Mic’
knobs are used by the instructor to adjust independently the level of the music and her voice, respectively. The CSM‐21's
‘Stereo/Mono’ button is set to STEREO, sending true stereo audio to a pair of portable powered loudspeakers. As an added
benefit, the entire system can be made portable by installing the rack‐mount gear into a 3U road case.

YOGA STUDIO

Yoga Studio Zone

Page 1

JBL Commercial Solutions SERIES

Application Guide

AV

Rack

EON 315

AKG

C 544 L

EON 315

CSM‐21 Front Panel View

Page 2

YOGA STUDIO

JBL Commercial Solutions SERIES

Application Guide

Cat 5 Cable
Generic Copper Wire
Mic/Line Cable
Speaker Cable

CSM‐21

CSR‐2SV

Fire Alarm Relay

CSA‐2120

Satellite Music

Receiver

MP3 Player

CSPM‐1

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.

COFFEE SHOP

CSS‐1S/T CSS‐1S/T

Coffee Shop Zone

Page 3

JBL

Commercial Solutions SERIES

Application Guide

CSS-

1S/T

CSR-2SV

CSPM-1

CSS-

1S/T

AV

Rack

CSA‐2120 Front Panel View

Page 4

COFFEE SHOP

JBL Commercial Solutions SERIES

Application Guide

Cat 5 Cable
Generic Copper Wire
Mic/Line Cable
Speaker Cable

Fire Alarm

Relay / Sounder

CSM‐32

CSA‐2120

CST‐2120

CSR‐V

CSR‐3SV

Music On Hold

Jukebox

TV

CSS‐8004 CSS‐8004 CSS‐8004 CSS‐8004 CSS‐8004 CSS‐8004

Satellite Music

Receiver

CSPM‐2

...

Dining Area Zone

CSS‐8008 CSS‐8008 CSS‐8008 CSS‐8008

...

Bar Zone

This restaurant has two zones—a dining area and a bar. Installed at the receptionist podium is a CSR‐V remote that allows
employees to adjust volume for the dining area. Installed behind the bar is a CSR‐3SV remote that allows employees to adjust
volume for the bar and to select Jukebox, TV audio, or Satellite Music as the source for the bar. Within the ‘Zone 1’ section of the
CSM‐32 mixer’s front panel, the ‘Source 1 Priority’ button is set to ON, and the ‘Select’ knob is set to 3. (NOTE: see page 8 for a
front panel view of the CSM‐32). This causes Satellite Music to be the default source for the dining area, and when a patron pays
to hear her favorite song on the Jukebox, that song automatically overrides the Satellite Music audio in the dining area. The
CSM‐32’s internal jumper cap has been removed, which causes the ‘Iso Aux Out’ channel to receive source 3 invariably*.
Therefore, callers to the restaurant will hear the Satellite Music player when they’re put on hold. Employees make
announcements by first selecting the desired zone(s) and then pressing and holding the PTT button on the CSPM‐2 paging mic
while they speak into it. The CSM‐32 automatically ducks the music during announcements in the zone(s) being paged. The
building’s fire alarm contains a normally open (NO) relay and a line‐level audio output for playback of alarm tones and pre‐
recorded messages. When the relay closes and/or the fire alarm sends audio, the CSM‐32 will mute the music and also route the
fire alarm’s audio (if present) to both zones. Mono‐summed audio is sent to distributed ceiling speakers in both zones, which are
powered by a CSA‐2120 amplifier and CST‐2120 tranformer. Low cost CSS‐8004 speakers are used in the dining area, and higher
performance CSS‐8008 speakers are used at the bar.

* If the internal jumper cap is left installed (the factory default), the ‘Iso Aux Out’ channel receives whichever source is selected in Zone 1.

RESTAURANT

Page 5

JBL Commercial Solutions SERIES

S1

= CSS‐8004

CSR-3SV

TV

Application Guide

S2 S2

S2 S2

BAR

S2 S2

S2

= CSS‐8008

S1 S1 S1 S1

S1 S1 S1 S1

DINING AREA

S1 S1 S1 S1

Ju

k

B

e

ox

AV

Rack

CSA‐2120 DIP Switch View

S1 S1 S1 S1

CSR-V

CSPM-2

RECEPTION

It is possible to “clip” the amplifier signal if, for example, the receptionist were to yell
into the mic. Not only does clipping sound bad, it can damage the high‐frequency
drivers in speakers. To avoid clipping the amplifier signal, the CSA‐2120's built‐in limiter
is turned ON. Also, strong low‐frequency signals (such as breath pops and dropped
microphones) can cause serious damage to speakers in a 70V or 100V distributed
system by saturating the transformer. To avoid transformer saturation, the CSA‐2120's
built‐in 70 Hz high‐pass filter is turned ON. This high‐pass filter must be enabled when
using the CST‐2120 to drive distributed speakers*. The CSA‐2120’s limiter and high‐pass
functionality is configured using DIP switches on the rear panel.

* Both CSM mixer models offer a 125 Hz high‐pass filter (which is turned ON/OFF by the rear‐panel button
labeled “XOVR”). This gives the installer two high‐pass filters in the signal chain from which to choose. To
optimize the performance of any of the four CSS speaker models, use only the 70 Hz high‐pass filter in the
CSA‐2120. The 125 Hz high‐pass filter in the CSM can safely be turned OFF (the ‘Out’ position) unless “less
bass” is desired.

Page 6

RESTAURANT

JBL Commercial Solutions SERIES

Application Guide

Cat 5 Cable
Generic Copper Wire
Mic/Line Cable
Speaker Cable

Fire Alarm

Relay / Sounder

CSM‐32

CSM‐32

CSA‐2120

CSR‐3SV

Music On Hold

Satellite Music

Receiver –

Kids Tunes

Satellite Music

Receiver –

Rock

CSA‐2120

Satellite Music

Receiver –

Pop

CSPM‐4

CST‐2120 CST‐2120

CSS‐8018

CSS‐8018 CSS‐8018

...

Children’s Dept.

This retail store has four audio zones: Children’s Dept., Men’s Dept., Women’s Dept., and Break Room. Since four independent
output zones are required, two CSM‐32 mixers are linked together via their link ports. Linking allows multiple mixers to share the
same input source, eliminating the need for Y‐cables. Therefore, two linked CSM‐32‘s can be thought of as one CSM‐32 with
three source inputs and four total output zones. Installed in the Break Room is a CSR‐3SV remote, which allows employees to
adjust volume and to select a music source to hear while they’re on break. Volume control and source selection for the three
other zones is accomplished using the front panel controls on the CSM‐32‘s, which are located in the manager’s office—safe
from unwanted tampering. Located in the checkout area is a CSPM‐4 paging mic, which allows employees to make
announcements by first selecting the desired zone(s) and then pressing and holding the PTT button while they speak into the
mic. Mono‐summed audio is sent to distributed ceiling speakers in all zones, which are powered by CSA‐2120 amplifiers and CST‐
2120 tranformers. High performance CSS‐8018 speakers are used in the public zones, while low cost CSS‐8004 speakers are used
in the break room.

CSS‐8018

CSS‐8018 CSS‐8018 CSS‐8018

Men’s Dept.

CSS‐8018 CSS‐8018

CSS‐8004

CSS‐8004 CSS‐8004

... ... ...

Women’s Dept.

Break Room

RETAIL STORE

Page 7

JBL Commercial Solutions SERIES

S1

S1

= CSS‐8018

Application Guide

S1S1S1

S1S1S1

MEN’S

DEPARTMENT

S1S1S1

S1 S1 S1

S2

S2

S1S1S1

S1S1S1

WOMEN’S

DEPARTMENT

S1S1S1

S1 S1 S1

= CSS‐8004

S1S1S1

S1S1S1

CHILDREN’S

DEPARTMENT

S1S1S1

S1 S1 S1

S2

CSM‐32 Front Panel View

CHECKOUT

S2 S2

BREAK ROOM

CSR-3SV

CSPM-4

MANAGER’S

S2S2S2

OFFICE

AV

Rack

Page 8

RETAIL STORE

This page intentionally left blank

Page 9

This page intentionally left blank

Page 10

JBL Commercial

8500 Balboa Blvd.

Northridge, CA 91329

USA

[phone]

Part Number: 5015036