C2G CG40533 – 45-Watt Stereo Audio Amplifier Plenum-Rated
C2G CG40533 – 45-Watt Stereo Audio Amplifier Plenum-Rated is backordered and will ship as soon as it is back in stock.
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C2G CG40533 – 45-Watt Stereo Audio Amplifier Plenum-Rated
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
| Output Power | 45W RMS stereo at 4 Ohms |
| Plenum Rating | Yes — direct plenum air-space installation verified |
| Inputs | Dual inputs |
| Mixer | No (amplifier only) |
| SKU | CG40533 |
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 creationnetworks.net.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
Nationwide Audiovisual Services, Design, Installation & Support
Creation Networks is a trusted nationwide partner for complete audiovisual solutions — delivering expert AV system sales, professional design, programming, installation, and ongoing support to organizations across the United States.
From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
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