CS Commercial Solution Series
CSM-21 & CSM-32
Mixer User Guide
This guide does not include all of the details of design, production, or variation of the equipment. Nor
does it cover every possible situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However,
updates to this information may have occurred.
Trademark Notice: JBL is registered trademark of Harman. Other trademarks are the property of their
respective owners.
© 2011 JBL Commercial, 8760 South Sandy Parkway, Sandy, UT 84070 USA. All Rights Reserved.
Contents
Important Safety Instructions .....................................................2
Quick Start ..................................................................................4
1.0 Introduction ..........................................................................5
1.1 JBL Commercial CSM-21 and CSM-32 Mixer .................5
1.2 Other Mixer Features .......................................................5
2.0 Installation ............................................................................6
2.1 Unpacking .......................................................................6
2.2 Mechanical Requirements ...............................................6
2.3 Installing the Mixer ..........................................................6
2.4 Audio Input and Output Wiring Convention ....................7
3.0 Rear Panel ............................................................................8
4.0 Front Panel .........................................................................11
5.0 Knowing Your Mixer ...........................................................13
5.1 Source ...........................................................................13
5.2 Zones .............................................................................13
5.3 Volume ...........................................................................13
5.4 AutoWarmth™ ................................................................13
5.5 LevelGuard™ .................................................................13
6.0 Setup ..................................................................................14
6.1 Determining Source Priorities ........................................14
6.2 Connecting Sources ......................................................14
6.3 Adjusting Source Gain ..................................................14
6.4 Using EQ .......................................................................14
6.5 Using the Subwoofer Crossover ....................................15
6.6 Setting Up AutoWarmth™ Method 1 .............................15
6.7 Setting Up AutoWarmth™ Method 2 .............................15
6.8 Setting Up LevelGuard™ ..............................................16
6.9 Security Cover ...............................................................16
Appendix A. Optional Item - CSR Series Remote Controls .....17
Appendix B: Block Diagrams ...................................................19
Appendix C: Specifications ......................................................20
1
IMPORTANT SAFETY INSTRUCTIONS
The symbols shown above are internationally accepted symbols
that warn of potential hazards with electrical products. The
lightning flash with arrowpoint in an equilateral triangle means
that there are dangerous voltages present within the unit. The
exclamation point in an equilateral triangle indicates that it is
necessary for the user to refer to the owner’s manual.
These symbols warn that there are no user serviceable parts
inside the unit. Do not open the unit. Do not attempt to service
the unit yourself. Refer all servicing to qualified personnel.
Opening the chassis for any reason will void the manufacturer’s
warranty. Do not get the unit wet. If liquid is spilled on the
unit, shut it off immediately and take it to a dealer for service.
Disconnect the unit during storms to prevent damage.
SAFETY INSTRUCTIONS
NOTICE FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER CORD.
WARNING: THIS APPLIANCE SHALL BE CONNECTED TO A MAINS SOCKET
OUTLET WITH A PROTECTIVE EARTHING CONNECTION.
The cores in the mains lead are coloured in accordance with the following code:
GREEN and YELLOW - Earth BLUE - Neutral BROWN - Live
As colours of the cores in the mains lead of this appliance may not correspond
with the coloured markings identifying the terminals in your plug, proceed
as follows:
•
The core which is coloured green and yellow must be connected to
the terminal in the plug marked with the letter E, or with the earth
symbol, or coloured green, or green and yellow.
•
The core which is coloured blue must be connected to the terminal
marked N or coloured black.
•
The core which is coloured brown must be connected to the
terminal marked L or coloured red.
This equipment may require the use of a different line cord, attachment plug, or both, depending on the available power source at
installation. If the attachment plug needs to be changed, refer
servicing to qualified service personnel who should refer to the
table below. The green/yellow wire shall be connected directly to
the units chassis.
CONDUCTOR
L LIVE BROWN BLACK
N NEUTRAL BLUE WHITE
E EARTH GND GREEN/YEL GREEN
WARNING: If the ground is defeated, certain fault conditions in
the unit or in the system to which it is connected can result in full
line voltage between chassis and earth ground. Severe injury or
death can then result if the chassis and earth ground are touched
simultaneously.
WIRE COLOR
Normal Alt
WARNING FOR YOUR PROTECTION
READ THE FOLLOWING:
KEEP THESE INSTRUCTIONS
HEED ALL WARNINGS
FOLLOW ALL INSTRUCTIONS
THE APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR SPLASHING LIQUID AND NO OBJECT FILLED WITH LIQUID, SUCH AS VASES,
SHALL BE PLACED ON THE APPARATUS
CLEAN ONLY WITH A DRY CLOTH.
DO NOT BLOCK ANY OF THE VENTILATION OPENINGS. INSTALL IN
ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS.
DO NOT INSTALL NEAR ANY HEAT SOURCES SUCH AS RADIATORS,
HEAT REGISTERS, STOVES, OR OTHER APPARATUS (INCLUDING
AMPLIFIERS) THAT PRODUCE HEAT.
ONLY USE ATTACHMENTS/ACCESSORIES SPECIFIED BY THE
MANUFACTURER.
UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN
UNUSED FOR LONG PERIODS OF TIME.
Do not defeat the safety purpose of the polarized or grounding-type plug.
A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade
or third prong are provided for your safety. If the provided plug does not fit
your outlet, consult an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus.
Use only with the cart stand, tripod bracket, or table specified by the manufacture, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.
Refer all servicing to to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power-supply
cord or plug is damaged, liquid has been spilled or objects have fallen into
the apparatus, the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
POWER ON/OFF SWITCH: For products provided with a power switch,
the power switch DOES NOT break the connection from the mains.
MAINS DISCONNECT: The plug shall remain readily operable. For rackmount or installation where plug is not accessible, an all-pole mains
switch with a contact separation of at least 3 mm in each pole shall be
incorporated into the electrical installation of the rack or building.
FOR UNITS EQUIPPED WITH EXTERNALLY ACCESSIBLE FUSE
RECEPTACLE: Replace fuse with same type and rating only.
MULTIPLE-INPUT VOLTAGE: This equipment may require the use of a
different line cord, attachment plug, or both, depending on the available
power source at installation. Connect this equipment only to the power
source indicated on the equipment rear panel. To reduce the risk of fire or
electric shock, refer servicing to qualified service personnel or equivalent.
If connected to 240V supply, a suitable CSA/UL certified power cord shall
be used for this supply.
2
IMPORTANT SAFETY INSTRUCTIONS
DECLARATION OF CONFORMITY
Manufacturer’s Name: JBL Professional
Manufacturer’s Address: 8760 S. Sandy Parkway
Sandy, Utah 84070, USA
declares that the product:
Product name: JBL CSM-21, CSM-32
Note: Product name may be suffixed by the EU.
Product option: None
conforms to the following Product Specifications:
Safety: IEC 60065 -01+Amd 1
EMC: EN 55022:2006
EN 55024:1998
FCC Part 15
Supplementary Information:
The product herewith complies with the requirements of the:
Low Voltage Directive 2006/95/EC
EMC Directive 2004/108/EC.
RoHS Directive 2002/95/EC
WEEE Directive 2002/96/EC
With regard to Directive 2005/32/EC and EC Regulation 1275/2008
of 17 December 2008, this product is designed, produced, and classified as Professional Audio Equipment and thus is exempt from this
Directive.
Roger Johnsen
Director, Engineering
Signal Processing
8760 S. Sandy Parkway
Sandy, Utah 84070, USA
Date: January 28, 2011
U.K. MAINS PLUG WARNING
A molded mains plug that has been cut off from the cord is unsafe. Discard
the mains plug at a suitable disposal facility. NEVER UNDER ANY
CIRCUMSTANCES SHOULD YOU INSERT A DAMAGED OR CUT
MAINS PLUG INTO A 13 AMP POWER SOCKET. Do not use the
mains plug without the fuse cover in place. Replacement fuse covers can
be obtained from your local retailer. Replacement fuses are 13 amps and
MUST be ASTA approved to BS1362.
ELECTROMAGNETIC
COMPATIBILITY
This device complies with part 15 of the FCC Rules
and the Product Specifications noted on the
Declaration of Conformity. Operation is subject
to the following two conditions:
•
this device may not cause harmful
interference, and
•
this device must accept any interference received,
including interference that may cause undesired
operation.
Operation of this unit within significant
electromagnetic fields should be avoided.
•
use only shielded interconnecting cables.
European Contact: Your local JBL Sales and Service Office or
Harman Signal Processing
8760 South Sandy Parkway
Sandy, Utah
84070 USA
Ph: (801) 566-8800
Fax: (801) 568-7583
If you want to dispose this product, do n ot mix it with general household waste. There is a
separate collection system for used electronic products in accordance with legislation that
requires proper treatment, recovery and recycling.
Private household in the 25 member states of the EU, in Switzerland and Norway may return their used
electronic products free of charge to designated collection facilities or to a retailer (if you purchase a similar
new one).
For Countries not mentioned above, please contact your local authorities for a correct method of disposal.
By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and
recycling and thus prevent potential negative effects on the environment and human health.
3
Quick Start
1. Connect the included JBL power supply to the POWER jack on the rear panel of the mixer.
2. On the front panel of the mixer, switch the POWER switch to the on position.
3. Connect a stereo audio source to the SOURCE 1 input. Do not put any audio through the mixer at
this time.
4. Turn the SOURCE 1 GAIN knob, on the rear panel of the unit, all the way counter-clockwise.
5. Turn the ZONE 1 LEVEL knob, on the front panel, all the way counter-clockwise.
6. On the front panel, select source 1 with the ZONE 1 SELECT knob.
7. Connect the ZONE 1 output to your power amplifier. Make sure the amplifier you are connecting to
is not powered up while making this connection, this will prevent any nasty pops.
8. Turn on your power amplifier.
9. Turn on your audio source.
10. Slowly turn up the SOURCE 1 GAIN knob, on the rear panel, until the SIGNAL LED consistently
lights green.
11. Now turn up the source level by rotating the ZONE 1 LEVEL knob, on the front panel, until you hear
audio through your speakers.
12. Adjust the EQ until the desired tone is achieved.
13. See page 14 to 15 for setting AutoWarmth™ and LevelGuard™.
4
1.0 Introduction
1.1 JBL Commercial CSM-21 and CSM-32 Mixer
The JBL Commercial® CSM-21 and CSM-32 mixers (hereafter referred to as ‘mixer’) were specifically
designed to provide signal routing flexibility and multiple audio source control. To facilitate this, JBL has
equipped the mixers with a wide array of input and output capabilities.
These features allow you to bring the same audio quality – that many of your patrons are used to hearing
at home – into your place of business. The CSM mixers have been designed to make them easier to
operate than any other product in their class. In reality, the feature set provided by the CSM mixers puts
them in a class all by themselves.
CSM-32 mixers provide 3 stereo source inputs and 2 full range stereo zone outputs (with dedicated
subwoofer outputs), and are equipped with functional I/O that provide connections for your microphones,
fire alarm system, auxiliary devices, and CSR remote controls. CSM-21 mixers provide 2 stereo source
inputs, 1 full range stereo zone output (with dedicated subwoofer output), and are equipped with I/O
that provide connections for your microphones, fire alarm system, and CSR remote controls. For further
information on the CSM’s connections and controls, please refer to later chapters in this guide.
JBL’s AutoWarmth™ and LevelGuard™ controls give you superb, easy to use equalization and dynamics
control. This function allows the signal to be tailored for a wide variety of rooms, taste, and volume
requirements.
1.2 Other Mixer Features
The mixers also feature linking capabilities. This is accomplished by connecting standard Cat 5 UTP
cables to the mixer’s LINK ports.
The linking of multiple mixers provides additional output zones, allowing you to expand the systems
output capabilities. Please note that linking mixers does not increase the number of inputs. SOURCE
linking allows multiple mixers to share the same input source, eliminating the need for Y-cables. MAIN
linking allows multiple mixers to share MIC input, MUSIC MUTE, and DIRECT INPUT functions. When
multiple units are linked, there is no master or slave designation. The functions are simply paralleled so
that sources, MIC input, MUSIC MUTE, and DIRECT INPUT can be fed to any of the linked mixers.
JBL offers several optional remote controls: CSR-V, CSR-2SV, and CSR-3SV. These remote controls
provide remote source selection and/or volume adjustments from within a zone location.
5
2.0 Installation
Method 1 - Attaching the brackets to the front panel for rack mounting
Method 2 - Attaching the brackets to the sides of the unit for wall mounting
2.1 Unpacking
This product was carefully inspected before packing to ensure flawless appearance and operation.
Please unpack and inspect your CSM mixer for any damage that may have occurred during transit.
If damage is found, notify the transportation company immediately. Only you can initiate a claim for
shipping damage. We will be happy to help as needed. Save the shipping carton as evidence of damage
for the shipper’s inspection.
We also recommend that you save all packing materials so you will have them if you ever need to
transport the unit.
2.2 Mechanical Requirements
We recommend leaving sufficient space around the sides, top, and rear of the mixer to ensure proper
ventilation. Forced cooling is not required. The mixer requires a vertical rack space of 1U. Failure to do
so may damage the mixer and invalidate the warranty.
2.3 Installing the Mixer
CAUTION: Before you begin, make sure that your mixer is disconnected from the power source and all
level controls are turned completely down (counter-clockwise).
To install the mixer, you can use one of the following approaches:
• Install the mixer in a rack enclosure.
1. Using the original brackets that came with the mixer, align the bracket’s holes with the holes on the
mixer’s chassis.
2. Fasten the bracket with the provided screws.
3. Follow steps 1 and 2 to install the remaining bracket(s) to the case, according to your application.
4. Install the mixer into the cabinet. For further details about rack installation, refer to your cabinet’s user
guide.
• Install the mixer to the wall. See ‘Method 2’ in the above figure.
• Stack mixer and amps without using a cabinet.
NOTE: WHEN TRANSPORTING, THE MIXER SHOULD BE SUPPORTED AT BOTH THE FRONT AND BACK.
6
2.4 Audio Input and Output Wiring Convention
Balanced wiring - The convention for balanced wiring (2-wire plus shield) is:
Input +
Input -
GND Shield
Unbalanced wiring - The convention for unbalanced wiring to the inputs (1-wire plus shield) is:
Input +
GND Shield
NOTE: THE ABOVE WIRING CONVENTIONS ARE APPLICABLE FOR THE FOLLOWING CONNECTORS:
MIC INPUT, DIRECT INPUT, ISO AUX OUTPUT AND ZONE OUTPUT.
7
3.0 Rear Panel
CSM-32 illustration
12 4
3
12 4
3
78
6
5
11
6
5
11
1. Power Supply Input
Connect the included JBL power supply here.
2. Firmware Update
9
12
13
10
14
15
CSM-21 illustration
9
12
13
8
10
15
14
The USB connector allows you to connect your computer to the mixer for updating the firmware.
To retrieve the firmware version of your mixer, observe the LEDs on the rear panel while the mixer
boots. The LED in the SOURCE 1 section represents major. The LED in the SOURCE 2 section
represents minor. The LED in the SOURCE 3 section represents build. The LED beside the MIC
connector represents revision. Each LED will flash green a number of times for the numeral it stands
for. The format is “major.minor[.build[.revision]]”. For example, if the first released version is “v1.0.0.0”,
when you switch the mixer on, the LED in the SOURCE 1 section will flash green once, and the
remaining LEDs will turn red. The unit is then ready for use.
3. Crossover
This switch activates the crossover feature for the left, right, and subwoofer ZONE outputs. When the
crossover switch is “in”, the left and right outputs will allow frequencies above 125Hz to pass and the
subwoofer output will allow frequencies below 125 Hz to pass. When the crossover is switch is “out”,
the left, right, and subwoofer outputs will pass full-range audio to allow the end-user to utilize the builtin crossover functionality on their speakers, if desired. Use this crossover feature if the bass response
of your room is too boomy when you are using inexpensive loudspeaker transformers or in conjunction
with the subwoofer crossover (see subwoofer crossover section).
4. Zone Output(s)
The mixer ZONE outputs utilize balanced Euroblock connectors. These outputs carry the Left, Right,
and Subwoofer signals. Connect these outputs to your power amplifier(s).
5. AutoWarmth™ Indicator and Trim Pot
These indicators flash green when the AutoWarmth function is triggered. This trim pot adjusts the point
at which the signal level must drop to before AutoWarmth™ will kick in (referred to as threshold).
8
6. Zone Remote Jacks
These inputs are for the optional remote controls: CSR-V, CSR-2SV, and CSR-3SV.
7. Isolated Auxiliary Output*
This output sends a transformer isolated mono signal for a music-on-hold system, or for a separate
mono auxiliary zone (please note that paging and emergency announcements will not be sent to this
zone). The +/- outputs are 600 Ohm transformer isolated so that they can interface to another system
(telephone or remote amplifier) without having undesirable ground interaction. The level control adjusts
the output level to match a variety of applications.
NOTE: THE P11 JUMPER IS LOCATED ON THE MIXER’S PCB. FROM THE FACTORY, THIS
JUMPER IS SET SO THAT THE SOURCE FEEDING THE AUXILIARY OUTPUT IS SELECTED
BY THE ZONE 1 SOURCE SELECTOR. IN OTHER WORDS, WHATEVER SOURCE IS
P11
SELECTED BY ZONE 1 IS WHAT COMES OUT OF THE AUXILIARY OUTPUT. THIS CAN BE
CHANGED TO ALWAYS BE SOURCE 3 BY REMOVING THE INTERNAL JUMPER CAP.
8. Page Assign
This connection allows you to assign pages between output zones (referred to as page steering). This
can be accomplished with a simple remote selector switch or can be hard wired if pages are to the
same zone every time. Connecting a zone pin (Z1, Z2, or both) to the “G” pin, assigns the page to that
zone.
9. Source Inputs
Connect your RCA equipped source signals here.
10. Link Jacks
These inputs allow you to network multiple CSM mixers together. The units are connected by standard
Cat 5 UTP cables. For proper operation, the length of the linking cable cannot exceed 2.4 meters.
11. Music Mute
This can be wired to a switch that mutes the background music when pin 2 is connected to pin 1
(ground).
NOTE 1: MUSIC MUTE DOES NOT MUTE THE PAGING MIC AND DIRECT INPUT. IN AN EMERGENCY
SITUATION, THE SYSTEM USER MAY NEED TO USE THE PAGING MIC FOR EMERGENCY
ANNOUNCEMENTS.
NOTE 2: WHEN THE CSM-21 AND CSM-32 MIXERS ARE LINKED TO PROVIDE AN ADDITIONAL
OUTPUT ZONE, MUSIC MUTE WILL BE APPLIED TO OTHER CSM-21 AND CSM-32 MIXERS
THROUGH THE LINK CONNECTION.
12. Direct Input
The Direct Input signal is buffered and sent directly to the outputs. This is useful for alarms, emergency
pages, or for another priority level of paging. The gain control adjusts the volume of the Direct Input to
the Zones.
NOTE: THE DIRECT INPUT REQUIRES A LINE-LEVEL SIGNAL, A MICROPHONE PRE-AMP IS
NEEDED TO BOOST A MIC LEVEL SIGNAL BEFORE IT CAN BE RUN INTO THE DIRECT INPUT.
Items with * are the controls only found on the CSM-32 mixer.
9
13. Priority Hold
Priority Hold smoothly adjusts the time it takes for the normal, or ducked, input source to become
audible again after the priority source ceases. This allows for compatibility with the many different types
of priority sources that exist in business environments.
14. Microphone Input
Connect the paging microphone here.
NOTE 1: LINE LEVEL PAGING OUTPUTS FROM TELEPHONE SYSTEMS MUST BE EXTERNALLY
TRANSFORMER ISOLATED AND REDUCED IN VOLUME – DOWN TO MICROPHONE LEVEL –
BEFORE CONNECTING THEM TO THIS INPUT.
NOTE 2: MICROPHONE AUDIO WILL NOT BE ROUTED TO OUTPUT ZONES UNLESS PAGE ASSIGN
CONTACTS ARE ACTIVE.
15. Phantom Power
This switch allows +48 V phantom power – for condenser microphones – to be turned on and off.
10
4.0 Front Panel
12345678
CSM-32 illustration
91011
12
CSM-21 illustration
12345678
91011
12
1. Source Selector
The SELECT knob selects which source is fed to each zone, or selects the REMOTE option – when
using a remote control for source selection. To activate remote source selection control, this control
must be set to the REMOTE position.
2. Source Level Knob
This LEVEL knob increases or decreases the output level of the background music. The range of this
knob is: -inf, -48 to +15dB of DSP gain.
3. Microphone Level Knob
13
13
This MIC level knob increases or decreases the level of the paging mic. The range of the knob is: -inf,
-30 to 0dB.
NOTE
: THE RANGE OF THE MIC LEVEL KNOB IS DETERMINED BY THE MIC MINIMUM SETTING.
WHEN THE MIC MINIMUM TRIM POT IS SET TO THE FULL CLOCK-WISE POSITION, THE RANGE OF
THE MIC LEVEL KNOB IS LIMITED TO -10 TO 0 dB.
4. Bass Zone EQ
The Bass trim pot applies cut or boost to the zone’s low frequencies.
5. Treble Zone EQ
The Treble trim pot applies cut or boost to the zone’s high frequencies.
6. Stereo/Mono Switch
This switch sums the stereo image to mono. This is helpful for accommodating mono input sources, or
for feeding stereo input sources into a mono sound system.
11
7. Bass Mic EQ
The Bass trim pot applies cut or boost, by up to +/-6 dB, to the Microphone’s low frequencies.
8. Treble Mic EQ
The Treble trim pot applies cut or boost, by up to +/-6 dB, to the Microphone’s high frequencies.
9. LevelGuard™ Threshold
This LED flashes amber when the LevelGuard™ function has been triggered. This threshold pot adjusts
the point at which LevelGuard™ will kick in.
10. Mic Minimum Volume Trim Pot
Sets the desired minimum paging microphone level, enabling the microphone’s lowest preferred level
to be set. This ensures that the main mic level control cannot be accidentally set too low, thereby
preventing a page from being heard from a zone.
11. Source Priority Switch
Selects whether or not Sources 2 and 3 are overridden by the Source 1 input.
12. Ducking
Ducking automatically decreases the level of the background music when a page takes place. Set
the Sensitivity control so that the ducking occurs reliably whenever a mic page occurs. Set the depth
control to suit the application. Typical ducking would be with the control straight up, letting through
some of the background music during a page. You can set the depth for full, minimal, or no ducking of
the music, as required.
13. Power Switch
Turns the CSM mixer on/off.
12
5.0 Knowing Your Mixer
5.1 Source
What is a Source? This is a line-level input signal such as programmed music, CD player, VCR/DVD,
satellite feed, tape player, radio, message repeater, or juke box. These sources are then equalized,
dynamically controlled, and routed by your selections and priorities on the mixer.
5.2 Zones
What is a zone? This is the area where you wish the signal to be heard. The mixer outputs a stereo or
mono signal to your chosen zone. A built-in crossover and subwoofer output allows you to include a
subwoofer in each zone, if desired. This allows you to attain the wide bandwidth sound your patrons are
used to hearing.
5.3 Volume
What is a good volume? Determining a good volume is a balance of art and science. You need maximum
coverage without interfering with the workplace environment or customer comfort and communication.
The mixer gives you the tools you need in the form of AutoWarmth™ and LevelGuard™ to get the best
sound quality from the volume that each application requires. Once you have set your volume preferences,
AutoWarmth™ and LevelGuard™ help you keep it that way.
5.4 AutoWarmth™
What is AutoWarmth™? In its simplest terms JBL’s AutoWarmth™ can be thought of as being similar to
the “loudness” control on a home stereo, except its actual functions are considerably more complex.
AutoWarmth™ operates on a variable basis, automatically making the proper adjustments to maintain an
even tonal perception. This function constantly adjusts for the ear’s tendency to hear less low frequencies
at low volumes, and more low frequencies at high volumes. AutoWarmth™ automatically ensures full
music fidelity at all volumes.
5.5 LevelGuard™
What is LevelGuard™? The LevelGuard™ feature helps keep the volumes of various sources consistent
by sensing the level of the incoming audio source and automatically processing the signal to a user
selected preference.
13
6.0 Setup
6.1 Determining Source Priorities
Determining the hierarchy of your sources is easier than it sounds. Generally, it follows this order:
1. Emergency/Alarm (Direct Input with MUSIC MUTE engaged)
2. Pages (Paging Mic)
3. Prerecorded announcements (or another source into SOURCE 1 with Priority engaged).
4. Background music (SOURCE 2 and SOURCE 3)
In this example, your alarms would connect to the Direct Input, your page microphone connects to the
MIC Input, prerecorded announcements connect to SOURCE 1, and background music connects to
SOURCE 2 and 3.
NOTE: MUSIC MUTE DOES NOT MUTE THE PAGING MIC. IN AN EMERGENCY SITUATION IT IS
USUALLY BEST TO KEEP ALL MICROPHONES ACTIVE FOR EMERGENCY ANNOUNCEMENTS.
6.2 Connecting Sources
Connecting your sources is also very simple. Just connect the left and right outputs of your source to the
left and right input of the mixer.
6.3 Adjusting Source Gain
Check the input level LEDs, they should light green for continuous signal. Red will flash if the input is too
strong. Occasional flashes into the red are not harmful if no distortion is apparent.
6.4 Using EQ
The best determination for needed equalization is to trust your ears. Does the output sound boomy?
Reduce the bass setting or engage the high pass filter, this will reduce the bass frequencies. Does it
sound dark or muffled? Turn up the treble. Or if it sounds thin or harsh, decrease the treble. Just like the
tone controls on a car or home stereo.
14
6.5 Using the Subwoofer Crossover
When the XOVR switch is engaged, the main speakers are high-passed at 125 Hz and the subwoofer
outputs are low-passed at 125 Hz (both using a Butterworth 24 dB per octave filter), forming a full
subwoofer crossover. When the XOVR switch is NOT engaged, the main speaker outputs and the
subwoofer outputs will all pass a full-range signal.
6.6 Setting Up AutoWarmth™ Method 1
To set up AutoWarmth™, begin by turning the AutoWarmth™ trim pot to the twelve o’clock position. Use
this as your “baseline” setting. Now turn up the source volume (located on the front panel) to a typical
operating level for that zone. Check the AutoWarmth™ indicator LED, on quieter passages the indicator
should flash green. If it does not, start turning the trim pot clockwise until it does. If the indicator is
constantly on, turn the trim pot counter-clockwise until it flashes only occasionally.
Then adjust the bass and treble tone controls for that zone. To check the adjustments, turn the volume
down to as low as its ever going to be used in that zone and make sure the tone sounds full enough.
If not, then turn the AutoWarmth™ trimmer further clockwise to increase its effect. Go back and forth
between typical level, low level, and high level. Adjust AutoWarmth™ for the best overall sound at all the
compared levels.
6.7 Setting Up AutoWarmth™ Method 2
An alternate method is to turn the AutoWarmth™ trimmer full counter-clockwise. Turn the Source volume
(located on the front panel) to the highest volume at which that zone will be operated. Adjust the
AutoWarmth™ trimmer clockwise until the green LED just starts to light on musical peaks. Then turn the
AutoWarmth™ trimmer back counter-clockwise until it does not light at all. Next turn the zone’s level down
to normal operating level and adjust the bass and treble controls for that zone, the AutoWarmth LED will
light.
With either of these setup methods, AutoWarmth™ should shut off when operating at higher volumes and
be lit at both normal and lower volumes.
15
6.8 Setting Up LevelGuard™
To set up LevelGuard™, begin by turning the LevelGuard™ trim pot to twelve o’ clock. Use this as your
“baseline” setting. Now turn up the Source volume to the level desired for a particular zone. Check the
LevelGuard™ indicator LED, on quieter passages the indicator should be off. On peak volumes the
indicator should flash amber. If the indicator is constantly on, turn the trim pot clockwise until it flashes
only occasionally. It is useful to set LevelGuard™ so that the LED stays unlit during very low music
volume use, flashes on and off during normal volume use, and then lights continuously as the volume
increases. For best sound quality, use a combination of LED visual cues and adjustments by ear.
6.9 Security Cover
Once system calibration is complete, affix the security panel over the front panel controls to prevent
tampering.
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Appendix A. Optional Item - CSR Series Remote Controls
CSR-V CSR-2SV CSR-3SV
Compatibility Between CSR Remote Control and CSM Mixers
Remote Control
CSR-V
CSR-2SV
CSR-3SV
*when using two input sources
Optional remote controls are available from JBL to provide source selection and volume control from a
remote location other than your mixer.
Selecting Sources
The Source Selection control on the remote control only functions when the Source Selector switch for
that zone is set to “REMOTE” on the mixer. When the remote control is active, the green LED on the
remote control, below the Source switch (labelled ACTIVE), lights. When this LED is not lit, the remote
source control is not operational.
CSM-21 CSM-32
Q Q
Q Q*
Mixer
Q
17
Controlling Volume
The LEVEL on the mixer is ALWAYS operational, regardless whether the Source Selector function is
active or not. This remote control is ATTENUATE ONLY.
To set the volume control of the remote control, you can follow these steps:
1. Turn the remote control LEVEL to maximum (full clockwise).
2. Set the volume control on the mixer to the loudest you will ever need the system to be.
3. Turn the remote control LEVEL knob down to a comfortable or typical operating level. Now the
volume control on the remote control cannot turn the volume up above what is set on the mixer.
RJ-45
(8-Position)
Pin 1 White/Orange +VREF 3.3VDC +VREF 3.3VDC
Pin 2 Orange Volume Control Volume Control
Pin 3 White/Green Not used Source Selection
Pin 4 Blue Not used LED (+2.8VDC)
Pin 5 White/Blue Not used Not used
Pin 6 Green Not used Not used
Pin 7 White/Brown Not used Not used
Pin 8 Brown Ground Ground
Color CSR-V CSR-2SV/CSR-3SV
18
Appendix B: Block Diagrams
19
Appendix C: Specifications
LINE INPUTS
Type: Unbalanced, RCA connector x 2 (stereo)
CSM-32 – 3 stereo RCA inputs
CSM-21 – 2 stereo RCA inputs
Nominal Sensitivity: -10dBV
Input Impedance: 20k ohms
Maximum Input: +12dBu
Equalization: Bass +/- 10dB @ 80Hz, Treble +/- 10dB @ 8kHz, 6dB/Octave Shelf
MIC INPUT
Type: Balanced, 5.08mm, Euroblock connector
Input Impedance: 2k ohms
Noise: EIN <117 dB, 150 ohm, DSP band-limited 120Hz-8kHz, BW24
Maximum Input: +20dBu
Equalization: Bass +/-6dB @ 250Hz, Treble +/-6dB @ 2kHz, 6dB/Octave Shelf
CMRR: >40dB, typically >55dB @ 1kHz
Pre-Amp Gain: +30dB to +60dB adjustable
Phantom Power: +48VDC, 10mA
ZONE OUTPUTS
Type: Balanced, 3.5mm, Euroblock connectors; Each Zone = Left, Right,
Sub
CSM-32 – 2 Zone Outputs
CSM-21 – 1 Zone Output
Output Impedance: 120 ohm balanced
Max. Output Level: +20dBu
XOVR specifications: “Out”
Left, Right: 20Hz-20kHz
Sub: 20Hz-20kHz (mono summed)
“In”
Left, Right: 125Hz High-Pass (BW24)
Sub: 125Hz Low-Pass (BW24)
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REAR PANEL LED INDICATORS
Source Inputs: Signal Present LED (turns on at -20dBu)
Signal Clip LED (turns on at +10dBu)
Mic Input: Signal Present LED (turns on at -20dBu)
Signal Clip LED (turns on at +18dBu)
SYSTEM PERFORMANCE
Frequency Response: 20Hz-20kHz, +/- 0.1dB
Dynamic Range: 104dB, A-Weighted, 20Hz-20kHz
Converter Type: Mic input implements dbx Type IV™ Conversion System
Sample Rate: 48kHz
Crosstalk: >75dB
THD+N: 0.005% typical at +4dBu, 20Hz-20kHz, 0dB gain
MISCELLANEOUS
Direct Input: Balanced, 5.08mm Euroblock connector
Input Impedance: 10k ohms
Maximum Input: +20dBu
Frequency response: 20Hz-20kHz
Isolated Aux Output: 600 ohm, balanced, transformer isolated, 250Hz – 8kHz, +/- 1dB, max
level +10dBu (CSM-32 only)
Music Mute: 2-pin 5.08mm Euroblock connector
Connecting the pins mutes all Source inputs, does not mute Mic input
Page Assign: CSM-21: 2-pin 5.08mm Euroblock connector
CSM-32: 3-pin 5.08mm Euroblock connector
Connecting zone pin to ground assigns page to that respective zone
Source Link: RJ45, CAT3 or higher. Max length 2.4m
Main Link: RJ45, CAT3 or higher. Max length 2.4m
GENERAL
Power Consumption: 10W
Power Requirements: 100-240V Thermal fuse in external transformer
Dimensions (WxHxD): 19.0” x 1.8”(no feet) x 7.0” (including knobs and connectors)
Weight: 5.3 lbs (2.4kg)
21
JBL Commercial
8760 South Sandy
Parkway
Sandy, UT 84070
USA
(801) 566-8800
Printed in China
Part Number: 18-6401-A Issue: 06/11
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