CCRM 4000 / C 303W-RF

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

Tri-element motorized ceiling microphone with three cardioid polar patterns covering 360° 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 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.
  • 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 @ 1KHz 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
2.7Kg (5.95lb) (6Kgs) (13.22lb) with bracket
Wiring Connections
RJ45 for control and unmute failsafe

Architect & Engineer Specifications

Ceiling mounted retractable triple back electret condenser microphones designed for suspended 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 ceiling tile bridge.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

01

Designed to capture 360 degree pickup.

02

Patent pending No. 1109720.1

03

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

04

Logic Hi / Lo for DSP mute detection port.

05

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

Frequently asked questions

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.

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.

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.

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.

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.

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

RF-immune design for reliable audio in sensitive legal proceedings.
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