LAB GRUPPEN CMA1201 Commercial Mixer Amplifier User Guide

Quick Start Guide

CMA Series
CMA602/CMA1201/CMA1202/CMA2402
Commercial Mixer Amplifier

Important Safety Instructions

CAUTION
RISK OF ELECTRIC SHOCK!
DO NOT OPEN!

Terminals marked with this symbol carry  electrical current of sufficient magnitude to constitute risk of electric shock. Use only high- quality professional speaker cables with ¼” TS or twist-locking plugs pre- installed. All other installation or modification should be performed only by qualified personnel.
This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure – voltage that may be sufficient to constitute a risk of shock.
This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. Please read the manual.
Caution
To reduce the risk of electric shock, do notremove the top cover (or the rear section).No user serviceable parts inside. Refer servicing to qualified personnel.
Caution
To reduce the risk of fire or electric shockdo not expose this appliance to rain andmoisture. The apparatus shall not be exposed to drippingor splashing liquids and no objects filled with liquids,
such as vases, shall be placed on the apparatus.
Caution
These service instructions are for use by qualified service personnel only.
To reduce the risk of electric shock do not perform any servicing other than that contained in the operation instructions. Repairs have to be performed by qualified service personnel.

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. 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 the third prong are provided for your safety. If theprovided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Use only attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing 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.
15. The apparatus shall be connected to a MAINS socket outlet with a protective earthing connection.
16. Where the MAINS plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable.
17. Correct disposal of this product: This symbol indicates that this product must not be disposed of with household waste, according to the WEEE Directive (2012/19/EU) and your national law. This product should be taken to a collection center licensed for the recycling of waste electrical and electronic equipment  (EEE). The mishandling of this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product  will contribute to the efficient use of natural resources. For more information about where you can take your waste equipment for recycling, please contact your local city office, or your household waste collection service.
18. Do not install in a confined space, such as a book case or similar unit.
19. Do not place naked flame sources, such as lighted candles, on the apparatus.
20. Please keep the environmental aspects of battery disposal in mind. Batteries must be disposed-of at a battery collection point.
21. Use this apparatus in tropical and/or moderate climates.
    Warning
    Please refer to the information on the exterior of bottom enclosure for electrical and safety information before installing or operating the device.

LEGAL DISCLAIMER
Music Tribe accepts no liability for any loss which may be suffered by any person who relies either wholly or in part upon any description, photograph, or statement  ontained herein. Technical specifications, appearances and other information are subject to change without notice. All trademarks are the property of their respective owners. Midas, Klark Teknik, Lab Gruppen, Lake, Tannoy, Turbosound, TC Electronic, TC Helicon, Behringer, Bugera, Aston Microphones, Aston Microphones and Coolaudio are trademarks or registered trademarks of Music Tribe Global Brands Ltd. © Music Tribe Global Brands Ltd. 2021 All rights reserved.

LIMITED WARRANTY
For the applicable warranty terms and conditions and additional information regarding Music Tribe’s Limited Warranty, please see complete details online at community.musictribe.com/pages/support#warranty.

CMA Series Hook up

Hook-Up

CMA Series Controls

Controls

1. INPUT VOLUME – Adjusts the volume of the various audio sources. Each channel has an associated LED that will light green to indicate active signal, and light red to
   indicate clipping.

2. EQ KNOBS – Adjust the bass and treble for the master output(s).

3. MASTER VOLUME – Controls the overall output level. The associated LED(s) will light green to indicate active signal, and light red to indicate amplifier limiting/protection.

4. POWER BUTTON – Turns the unit on and forces it into standby. The LED will indicate power status.

5. MAINS CONNECTOR – Connect the IEC cable to a mains outlet.

6. CONFIG SWITCHES – Configure the output channel for the connected load type. See ‘Getting Started’ section for details.

7. OUTPUT – Connect your speaker(s).

8. AUX OUTPUT – Line-level pre-master output signal to drive additional zone(s).

9. REMOTE –Allows the connection of an external volume control module per channelCRC-V series of wall controllers are available aseparate accessories.

10. INPUT ROUTING – Controls the routing for each input. (not available on CMA1201) See ‘Getting Started’ section for details.

11.  PHANTOM 48 V – Controls phantom power per section of 4 inputs. (CMA1201 all inputs)

12. EUROBLOCK INPUT – Accepts 3-pin Euroblock connectors for balanced mic or line-level sources.

13.  MIC/LINE SWITCH – Optimizes the input gafor mic or line-level sources.

14. RCA INPUTS – Allows the connection of stereo unbalanced sources, which will be summed to mono.

15. PRIORITY – Additional 2 pins that activate the priority ducking function when shorted together.

16. VOX KNOB – Sets the input level that will engage the priority ducking function.

CMA Series Getting Started

Welcome to the CMA series Quick Start Guide and thank you for purchasing one of these mixer amplifiers. The following accessories are included with your product:
– Euroblock input connectors
– Euroblock output and aux output connectors
– Front angle bracket (x2)
– Rear flat brackets (x2)
– Rear angle bracket with shoulder screw
– Coupling plate (CMA1201 only)
– Long angle bracket (CMA1201 only)
– Necessary screws and Torx L-key
– Power cable with mains plug corresponding to the specified country version
– Quick Start Guide (this document)

Rack Mounting
The CMA series amplifiers come with rubber feet that enable the amps to be placed on a clear surface without any additional installation. However, optional rack mounting hardware is also supplied, allowing several models to be housed and protected inside a 19″ rack enclosure. Follow these steps to attach the mounting hardware.
A pair of CMA1201 units can be mounted side-byside to occupy a single rack space. Attach the coupling plate to the underside of 2 CMA1201 units using the included screws.

Attach the front angle brackets to either side of a CMA602/1202/2402 unit, or a pair of CMA1201 units that have been coupled.
Alternatively, a single CMA1201 unit can be installed in a 19″ rack using the long angle bracket, or in a half 19″ rack using the short angled brackets.
Attach the angled brackets by unscrewing the chassis side front screws and attach again together with the brackets.

If your rack has rear rails, attach the rear flat brackets by reusing the screws from the chassis.

Mount the CMA unit(s) into the rack by attaching 4 rack screws through the front angle brackets and rack rails.
Hold one of the rear angle brackets up to the rear rack rails so that it lines up next to the rear flat bracket. Do not attach it to the rear rails yet.
Insert the included shoulder screw through the slot in the rear flat bracket and into one of the threaded holes in the rear angle bracket. The screw should allow the rear angle bracket to slide forward and back within the flat bracket’s slot.

Repeat the process for the other rear angle bracket.
Mount the rear angle brackets to the rear rack rails using 4 standard rack screws.
Tighten the shoulder screw if necessary.
Standard rack screw: M4 x 8 mm.
The CMA series amplifiers are convection cooled and primarily use the top surface to dissipate heat. For demanding applications, it is recommended to have sufficient space (1 RU) above the amplifier to reduce the risk of limiting due to overheating.

Connections
For balanced or microphone input connections, use a 3-pole cable (hot, cold, ground) wired to a Euroblock connector. Place the Mic/Line switch next to the input at the appropriate position to optimize input gain. Alternatively, RCA cables can be connected for unbalanced stereo sources, but the RCA and Euroblock inputs should not be used together on the same input.
Note that stereo signals will be summed to mono.

Always be sure to have all levels at minimum when connecting or disconnecting audio sources from the inputs, especially when MIC is selected from the MIC/LINE switch. Failure to do so may cause the amplifier or speaker to go into a protection mode or even cause damage.
For output signals, connect a 4-pole Euroblock connector (2-pole for CMA1201) to the main output connector(s). Do NOT connect any terminal to ground. Do NOT connect the cold (-) terminals together for common returns. Make sure to set the Config switches in the correct position to match your intended use. Speaker wire of 14-18 AWG is recommended for connections up to 50 feet.

Config

The first 2 Config dipswitches allow the output to be configured for 100 V, 70 V, 8 Ω, or 4 Ω operation. Always use the correct configuration for the speakers being driven! The mode of operation configures both the maximum voltage of the output and the gain through the device.
The 8 Ω setting should be used for a pair of 16 Ω speakers or a single 8 Ω speaker. The 4 Ω setting should be used for 4 x 16 Ω, 2 x 8 Ω, or a single 4 Ω speaker. Use 70 or 100 V setting for Constant Voltage high impedance speaker systems. Make sure the sum of the power tapping on the speakers plus margin does not exceed the amplifier’s maximum power rating.
The 3rd dipswitch engages a high-pass filter at 80 Hz, which should be used on all Constant Voltage systems to avoid saturation on the transformerenabled speakers, but can also be used to help maintain clear sound from small speakers or bass-heavy audio.

Input Routing

For CMA602/1202/2402 units, the routing of inputs to outputs can be controlled with the input routing dipswitches. By default (switches down), Inputs A-D are routed to Output A and Inputs E-H are routed to Output B. However, for sources that should be sent to both outputs, the corresponding dipswitch can be engaged to route an input to the other output channel as well. This is useful, for example, to send background music or paging messages to both zones/sections of a building but maintain other sources local to each zone.
Phantom power (48 V) can also be supplied to channels A-D and E-H independently by engaging the corresponding dipswitch.

Priority and Vox

Inputs A and B (Input A only on CMA1201) have the ability to mute all other channels when the Priority function is activated. Activation is achieved by shorting the 2 Priority pins with a closure switch, often found on paging mics. Alternatively, the activation can also be done by the signal on the prioritized input exceeding a set level(threshold). Turning the VOX knob counterclockwise sets the input level required to engage ducking. Set it so thaspeaking clearly into the mic exceeds this thresholdbut ambient noise is ignored. Turning the VOX knob fully clockwise (OFF) disables this feature. For CMA602/1202/2402, the ducking affects all other sources that are routed to the same output as the prioritized input. For example, if Input A is routed also to Output B, Input A will have priority over all other inputs. Input E, however, cannot have priority over the Output A inputs.

Remote

| RJ-45 Pin| Color (T568B)| Remote (1 channel
products )| Remote A+B| Remote B
---|---|---|---|---|---
1| White/ Orange| VCC 10 V| VCC 10 V| VCC 10 V
2| Orange| Volume
Control| Volume Control
Channel A| Volume Control Channel
B
3| White/ Green| N/A| Volume Control
Channel A| N/A
| 8| Brown| Ground| Ground| Ground

RJ45 receptacle to connect an optional remote volume control per channel. Use a standard cable to connect the CRC-V accessory, or connect a custom potentiometer with the pinout information. Cable length above 305 m (1000 ft) is not recommended.

Signal Wake-up
If the amps are powered on, but do not receive any input signal (below signal present level) for 20 minutes, the system will enter standby mode to save power consumption. As soon as a signal is detected at any input, the unit will exit standby mode and resume normal function. The system can also be waken up by shorting the priority pins.

Specifications

Other important information

Important information

1. Register online. Please register your new Music Tribe equipment right after you purchase it by visiting musictribe.com. Registering your purchase using our simple online form helps us to process your repair claims more quickly and efficiently. Also, read the terms and conditions of our warranty, if applicable.
2. Malfunction. Should your Music Tribe Authorized Reseller not be located in your vicinity, you may contact the Music Tribe Authorized Fulfiller for your country listed under “Support” at musictribe.com. Should your country not be listed, please check if your problem can be dealt with by our “Online Support” which may also be found under “Support” at musictribe.com. Alternatively, please submit an online warranty claim at musictribe.com BEFORE returning the product.
3. Power Connections. Before plugging the unit into a power socket, please make sure you are using the correct mains voltage for your particular model. Faulty fuses must be replaced with fuses of the same type and rating without exception.

FEDERAL COMMUNICATIONS
COMMISSION COMPLIANCE
INFORMATION

Lab Gruppen
CMA Series

CMA Series
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
Important information:
Changes or modifications to the equipment not expressly approved by MUSIC Tribe can void the user’s authority to use the equipment.

**** Hereby, Music Tribe declares that this product is in compliance with Directive 2014/35/EU,Directive 2014/30/EU, Directive 2011/65/EU and Amendment 2015/863/EU, Directive 2012/19/EU, Regulation 519/2012 REACH SVHC and Directive 1907/2006/EC.
Full text of EU DoC is available at https://community.musictribe.com/
EU Representative: Music Tribe Brands DK A/S
Address: Gammel Strand 44, DK-1202 København K, Denmark
UK Representative: Music Tribe Brands UK Ltd.
Address: 6 Lloyds Avenue, Unit 4CL London EC3N 3AX, United Kingdom

References

• Music Tribe
• Music Tribe
• Music Tribe
• Music Tribe
• Music Tribe

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>