Product Overview

The C2G CG40533 45-Watt Stereo Audio Amplifier Plenum-Rated is a compact commercial audio amplifier designed for direct installation in plenum air-handling spaces, eliminating the need for a separate fire-rated enclosure. Laboratory tested and verified for plenum installation, it delivers 45 Watts RMS at 4 Ohms stereo output for sound reinforcement in classrooms, conference rooms, training centers, offices, and restaurants. Dual inputs accept a variety of audio sources, making it a flexible amplification solution for commercial AV audio systems.

Product Description

The CG40533 plenum amplifier is built to simplify commercial audio installation in regulated environments. Where non-plenum amplifiers require an additional fire-rated metal enclosure to comply with building codes in air-handling spaces, the CG40533 can be mounted directly above the ceiling without one saving installation time and reducing hardware cost. Its minimal size and weight support easy mounting in virtually any above-ceiling location.

Dual inputs accommodate connections from multiple audio sources including microphone/line inputs. The 45W RMS stereo output at 4 Ohms drives ceiling speaker pairs in small to medium commercial spaces. This amplifier-only model (no mixer) is the lower-cost option when audio mixing at the amplifier is not required; for built-in mixing capability, see the CG40573 stereo mixer/amplifier.

Key Features

• Plenum-Rated for Direct Above-Ceiling Installation Lab-tested for installation in plenum air-handling spaces without a separate fire-rated enclosure.
• 45W RMS Stereo at 4 Ohms Adequate output for ceiling speaker coverage in small to medium commercial rooms.
• Dual Inputs Accepts multiple audio sources for flexible commercial AV system integration.
• Compact and Lightweight Easy to mount above ceilings and in space-constrained plenum areas.
• Amplifier Only (No Mixer) Straightforward amplification without mixing circuitry; lower cost than the CG40573 mixer/amplifier.

Typical Applications

• Conference room ceiling speaker audio amplification in plenum spaces
• Classroom and training room sound reinforcement above the ceiling
• Restaurant and commercial space background audio in plenum installation
• Office paging and announcement system amplification
• Commercial AV audio channel amplification where mixing is handled upstream

Technical Specifications

Frequently Asked Questions

What is the difference between CG40533 and CG40573?

The CG40533 is an amplifier only at 45W with dual inputs. The CG40573 is a stereo mixer/amplifier at 45W with built-in audio mixing capability. Choose CG40573 when you need to mix multiple sources before amplification; use CG40533 when mixing is handled upstream by a separate mixer or DSP.

Does this need a plenum enclosure box?

No. The CG40533 is laboratory tested and verified for direct installation in plenum air-handling spaces without an additional fire-rated enclosure.

What is the output impedance?

45W RMS at 4 Ohms stereo. Verify speaker impedance compatibility before installation.

What warranty does C2G provide?

Standard commercial warranty. Contact Creation Networks at .