Lab Gruppen CMA1201 120 Watt Commercial Mixer Amplifier with 4 Inputs

Product Overview

The Lab Gruppen CMA1201 is a single-channel, 120W commercial mixer amplifier with a 4-input mixer section, designed for permanent installation in small single-zone commercial audio systems. It integrates mixing and amplification in a compact half-rack 1U enclosure, providing a practical and cost-effective solution for background music in small retail areas, hotel rooms, private offices, and small conference rooms where a single mono audio zone and up to four source inputs are sufficient. The CMA1201 supports both low-impedance and 70V/100V constant-voltage speaker configurations.

Product Description

The CMA1201 delivers 120 watts into a single output channel, switchable between low-impedance (4/8 ohm) and high-impedance (70V/100V) constant-voltage operation via rear-panel dipswitch. Its 4-input mixer provides one balanced mic/line Euroblock input (Input A, with configurable priority muting) and three RCA unbalanced line inputs, each with individual volume controls. Front-panel master volume and bass/treble controls allow on-site audio adjustments without rear-panel access. Priority muting on Input A automatically reduces the level of the three background music inputs when a paging or announcement signal is detected, making the CMA1201 suitable for small retail, hospitality, and office paging applications. Fanless convection cooling provides silent operation appropriate for occupied spaces including hotel rooms and private offices. Auto Ramp circuitry activates the amplifier when an input signal is detected and initiates a 20-minute sleep timer during inactivity, supporting Energy Star energy efficiency in spaces with variable daily occupancy. The unit ships with joining brackets allowing half-rack mounting in a standard 19-inch rack or standalone wall and table installation.

Key Features

• 120W Single-Zone Output — Drives a single 4/8 ohm or 70V/100V speaker zone at up to 120W for small commercial spaces.
• 4-Input Mixer Section — One balanced mic/line Euroblock input and three RCA line inputs with individual volume controls.
• Priority Muting on Input A — Automatically reduces background music levels during paging or announcement events.
• Front-Panel Volume and Tone Controls — Master volume, bass, and treble adjustable from the front panel for quick on-site management.
• 70V/100V Constant Voltage Output — Drives distributed speaker systems without an external output transformer.
• Fanless Convection Cooling — Silent operation suitable for noise-sensitive small commercial spaces.
• Auto Ramp & Sleep Mode — Signal-activated power-on and 20-minute sleep timer for energy-efficient operation.
• Energy Star Certified — Meets commercial energy efficiency standards.

Typical Applications

• Small retail area single-zone background music
• Hotel room and small corridor audio distribution
• Private office and small conference room background music
• Huddle room and small meeting space audio
• Cafe and small restaurant background music
• Corporate reception and small lobby audio
• Government facility small room audio systems

Technical Specifications

Frequently Asked Questions

Q: What is the difference between the CMA1201 and the CMA1202?

A: The CMA1202 is a 2-channel unit with 8 inputs delivering 120W per channel across two independent zones. The CMA1201 combines all 120W into a single output channel with 4 inputs, suited for simpler single-zone installations with fewer sources.

Q: What is the difference between the CMA1201 and the CPA1201?

A: Both are single-channel 120W mixer amplifiers with 5 inputs. The CPA1201 adds Bluetooth streaming and a USB media player. The CMA1201 has 4 inputs and no wireless or media playback capability, suited for installations using a separate media source.

Q: Can the CMA1201 drive a 70V distributed speaker system?

A: Yes. The output channel is switchable to 70V or 100V constant-voltage operation via rear-panel dipswitch, with no external output transformer required.

Q: What type of microphone can connect to Input A?

A: Input A is a balanced Euroblock connector that accepts both dynamic and condenser microphones at mic-level. For phantom power-dependent condenser microphones, confirm whether an external phantom power supply is required as this should be verified against the current CMA1201 datasheet.

Q: Can the CMA1201 be installed in a standard 19-inch rack?

A: Yes. Two CMA1201 units can be joined side-by-side with the included brackets to occupy one 1U rack space, or each unit can be rack-, wall-, or table-mounted individually.

Q: Is the CMA1201 suitable for use in a hotel room or private office?

A: Yes. Fanless convection cooling provides silent operation, and the compact half-rack form factor allows discreet mounting in furniture or small equipment enclosures.