ARM 100-RF

The Condenser Microphone is a very Low Profile Boundary Layer through Table design, with an Omni-Directional Polar Pattern. The Microphone has a unique ability to automatically extend and retract and lock the Capsule Module away from sight leaving only 3 mm (0.12”) protruding on top of the table.
QUICK SPECS
Type
Condenser (Back Electret)
Polar Pattern
Omni-Directional Frequency Response 30Hz - 20 KHz
Sensitivity
-42.5dB +/- 3dB @ 1 KHz (0dB = 1 V/Pa)
Impedance
200 Ohms

Engineered for Perfect Speech Capture

The Condenser Microphone is a very Low Profile Boundary Layer through Table design, with an Omni-Directional Polar Pattern. The Microphone has a unique ability to automatically extend and retract and lock the Capsule Module away from sight leaving only 3 mm (0.12”) protruding on top of the table. The Microphone has an inbuilt motor that is operated by a Control Box ARM – C.

Control signals (+2.5V to +12V) from a DSP or electronic switch are required to activate the motor. The Microphone is of a robust brass construction and includes 2 Metres (6.6ft) of audio cable and 2 Metres of control cable. An integral Phantom Power Module is provided requiring 9 to 48 volts dc.

The Phantom Power Module also includes filters which will eliminate all GSM frequencies from 800-1200 MHz Impedance 200 Ohms; Frequency response 30 Hz to 20 KHz; Sensitivity -42.5dB ± 3dB @ 1KHz (0dB =1V/Pa); Total Harmonic Distortion (THD) at an operating level of 120dB is no greater than 1%. Finish: Black Nextel® or Satin Nickel.

Digital Motorised Retracta Omni-Directional

Microphone.

Very low profile Boundary Layer

through table design.

Technical Specifications

Type
Condenser (Back Electret)
Polar Pattern
Omni-Directional Frequency Response 30Hz - 20 KHz
Sensitivity
-42.5dB +/- 3dB @ 1 KHz (0dB = 1 V/Pa)
Impedance
200 Ohms
S/N Ratio
68dB(A) Maximum Sound Pressure Level 125dB at 1KHz 1% T.H.D. Power
Finish
Satin Black or Nickel
Length
retracted: 180mm (7.1”)
Weight
49gms.

Key Features

01

Digital Motorised Retracta Omni-Directional

02

Microphone.

03

Very low profile Boundary Layer

04

through table design.

05

Digital Motorised Retracta Omni

Downloads & Documentation

Product Data Sheet
PDF • 287.3 KB
Installation Guide
PDF • 222.4 KB

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

Courtrooms & Legal

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

Government & Municipal

Reliable audio systems for council chambers and government facilities.

Corporate AV

Professional audio solutions for corporate environments and facilities.
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