What industries does Clockaudio serve?

Clockaudio solutions are used across corporate offices, education, government, healthcare, broadcast, and commercial AV environments where reliable, high-quality audio is essential.

Are Clockaudio products compatible with major conferencing platforms?

Yes — Clockaudio microphones and audio systems integrate seamlessly with major unified communications platforms including Microsoft Teams Rooms, Zoom Rooms, Cisco Webex, and Google Meet. Our boundary, gooseneck, and ceiling microphones deliver the clarity and reliability required for professional video conferencing installations worldwide.

Do you offer support for system design and installation?

Yes. Our engineering team provides system design consultations for integrators and end-users, helping specify the right combination of microphones, processors, and accessories for your space. Our technical support team is available throughout the installation and commissioning process.

Where are Clockaudio products manufactured?

Clockaudio has been designing and manufacturing professional audio products in the United Kingdom for over 40 years. Our UK facility handles R&D, precision assembly, and quality control — ensuring every product meets the standards expected by AV professionals worldwide.

How can I choose the right microphone for my space?

The right microphone depends on your room size, acoustic environment, and application. Boundary microphones suit tabletop conferencing; goosenecks are ideal for fixed lectern or dais positions; ceiling-mounted mics offer clean aesthetics for modern meeting rooms. Contact our team or use our Search Facility to find a certified integrator near you for a tailored recommendation.

CCRM 4000 / C 303 Plenum

Plenum rated Tri-element motorized ceiling microphone

QUICK SPECS

Type

Tri-elementCondenser (Back Electret)

Polar Pattern

3 X Cardioid patterns, 120° from each other covering 360°

Frequency Response

50Hz – 18KHz

Sensitivity

-37dB @ 1KHz (0dB 1v/Pa)

Engineered for Perfect Speech Capture

Plenum rated Tri-element motorized ceiling microphone for applications such as for Boardrooms, conferencing, court rooms and other venues

Designed to capture 360 degree pickup.
Patent pending No. 1109720.1
Control ports allow DSP connection and Link / daisy chain expansion to other CCRM 4000/C303 Retracta units.
Logic Hi / Lo for DSP mute detection port.
Main & Secondary units are Identical in construction. Two rotary 0-9 digital decimal encoders are used to set Main (00) and 01 – 99 determines Secondary designation. The factory default is set to Main (00).
RJ45 socket allows easy and fast connection of the audio to mixer or DSP. A 9-48 Volt phantom power is required.
IR remote control is supplied with the Main unit. Remote control can be used to activate the units in the absence of a DSP.
IR receiver sensor with integral green programme mode led and red range led (supplied with Main unit).
Audio cable length 2.5 Metres.
Inbuilt Phantom Power adaptor modules.
Universal mains switched mode power supply available as separate item. Operates up to 4 units.
Automatic safety detection for cable hang-ups
Ceiling bezel fitted with detection switch.
Up to 99 Secondary units can be daisy chained to the Main. The CCRM4000-C303 is mounted inside a modified Chief CMS491 Plenum rated storage box.
3 X Cardioid Patterns, 120° from each other, covering 360°
Finish: Black Satin or Gloss White.

For ‘Glossary of Terms’ Click Here

Designed to capture 360 degree pickup.

Patent pending No. 1109720.1

Control ports allow DSP connection and Link / daisy chain expansion to other CCRM 4000/C303 Retracta units.

Logic Hi / Lo for DSP mute detection port.

Technical Specifications

Application

Designed for superior quality voice reproduction in venues such as boardrooms,conferencing,court rooms and other such venues.

Type

Tri-elementCondenser (Back Electret)

Polar Pattern

3 X Cardioid patterns, 120° from each other covering 360°

Frequency Response

50Hz – 18KHz

Sensitivity

-37dB @ 1KHz (0dB 1v/Pa)

Impedance

200 Ohms

S/N Ratio

69dB (A)

Maximum Sound Pressure Level

125dB @ 1%THD

Power Requirements

9 - 48 volts phantom power

Termination

C303W-RF tri-element microphone pre wired in CCRM4000 unit, output in RJ45 female connector, supplied with RJ45 female fan out to three phoenix connectors.

Finish

CCRM4000 motor assembly (Satin Black), C303-RF/C303W-RF microphone and cable (Satin Black or Gloss White)

Weight

16Kg (35lbs)

Wiring Connections

RJ45 for control and unmute failsafe

Architect & Engineer Specifications

Plenum rated ceiling mounted retractable triple back electret condenser microphones designed for suspended Plenum ceiling applications. 2.5 Metres (8.20 ft) cable with pre-wired TA5F (Mini XLR) for the C303W-RF microphone, and built in Phantom Power Adaptors. Also includes modified Chief CMS491 Plenum rated storage box. The microphone is engineered in high quality brass. It requires phantom power supply 9-48 Volts. Frequency response 50 – 18 KHz, impedance 1.8 K Ohms, Max spl 125dB less than 1% THD, sensitivity -37dB @ 1 KHz (0dB = 1 V/Pa) Finish: Satin Black or Gloss White.

Key Features

Designed to capture 360 degree pickup.

Patent pending No. 1109720.1

Control ports allow DSP connection and Link / daisy chain expansion to other CCRM 4000/C303 Retracta units.

Logic Hi / Lo for DSP mute detection port.

Main & Secondary units are Identical in construction. Two rotary 0-9 digital decimal encoders are used to set Main (00) and 01 – 99 determines Secondary designation. The factory default is set to Main (00).

Downloads & Documentation

Installation Guide

PDF • 1.1 MB

Line Drawing

PDF • 100.5 KB

Frequently asked questions

What is the frequency response?

The frequency response is 50Hz – 18KHz

What finish options are available?

Available finish: CCRM4000 motor assembly (Satin Black), C303-RF/C303W-RF microphone and cable (Satin Black or Gloss White)

IDEAL FOR

Application Areas

Boardrooms & Meeting Rooms

Professional audio capture for every participant with discreet integration.

Conference Rooms

Clear voice reproduction for video conferencing and unified communications.

Courtrooms & Legal

Reliable audio for legal proceedings and court reporting.

Not Sure if the CCRM 4000 / C 303 Plenum Is Right for You?

Our audio engineers can help you specify the perfect microphone for your installation. Get in touch for expert guidance.

CCRM 4000 / C 303 Plenum

QUICK SPECS

Engineered for Perfect Speech Capture

Designed to capture 360 degree pickup.

Patent pending No. 1109720.1

Control ports allow DSP connection and Link / daisy chain expansion to other CCRM 4000/C303 Retracta units.

Logic Hi / Lo for DSP mute detection port.

Technical Specifications

Architect & Engineer Specifications

Key Features

Designed to capture 360 degree pickup.

Patent pending No. 1109720.1

Control ports allow DSP connection and Link / daisy chain expansion to other CCRM 4000/C303 Retracta units.

Logic Hi / Lo for DSP mute detection port.

Main & Secondary units are Identical in construction. Two rotary 0-9 digital decimal encoders are used to set Main (00) and 01 – 99 determines Secondary designation. The factory default is set to Main (00).

Downloads & Documentation

Frequently asked questions

IDEAL FOR

Application Areas

Boardrooms & Meeting Rooms

Conference Rooms

Courtrooms & Legal

YOU MAY ALSO LIKE

Related Products

C801 SERIES

C3SE-RF SERIES

CW 7001

SEC 07

CRM 202-RF

GT 420T

Not Sure if the CCRM 4000 / C 303 Plenum Is Right for You?

CCRM 4000 / C 303 Plenum

QUICK SPECS

Engineered for Perfect Speech Capture

Designed to capture 360 degree pickup.

Patent pending No. 1109720.1

Control ports allow DSP connection and Link / daisy chain expansion to other CCRM 4000/C303 Retracta units.

Logic Hi / Lo for DSP mute detection port.

Technical Specifications

Architect & Engineer Specifications

Key Features

Designed to capture 360 degree pickup.

Patent pending No. 1109720.1

Control ports allow DSP connection and Link / daisy chain expansion to other CCRM 4000/C303 Retracta units.

Logic Hi / Lo for DSP mute detection port.

Main & Secondary units are Identical in construction. Two rotary 0-9 digital decimal encoders are used to set Main (00) and 01 – 99 determines Secondary designation. The factory default is set to Main (00).

Downloads & Documentation

Frequently asked questions

IDEAL FOR

Application Areas

Boardrooms & Meeting Rooms

Conference Rooms

Courtrooms & Legal

YOU MAY ALSO LIKE

Related Products

C801 SERIES

C3SE-RF SERIES

CW 7001

SEC 07

CRM 202-RF

GT 420T

Not Sure if the CCRM 4000 / C 303 Plenum Is Right for You?

Search Products