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CM-3 Conference Microphone

Add A New Dimension To Your Recording Device or Assistive Listening System

The CM-3 conference microphone has been designed to enhance the pickup range for a wide variety of assistive listening devices and digital voice recording devices including computers. With CM-3's daisy-chain capability, there is no need for passing the microphone around or to miss out on faint voices during play-back of the meeting recordings.


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Click to enlarge CM-3j Conference microphone
CM-3j Basic Conference Microphone

Includes one (1) CM-3j microphone with 36" cord and 3.5mm mono plug for direct connection to ALDs. Options for computers with 3.5mm Mic input jack include KO-A Mic input adapter or KO-5 high grade 5 ft Mic input adapter cable. For computers (PC or Mac) without a 3.5mm Mic input jack, use USB-A adapter with KO-A or KO-5 adapter cable.

Price: $100   Qty:  

Computer options  


Click to enlarge CM-3j Conference microphone
CM-3jD Dual Microphone Package

Includes two (2) CM-3j microphones with KKJ-Y splitter and KJ-10 high grade 10 ft extension cord for direct connection to ALDs. Options for computers with 3.5mm Mic input jack include KO-A Mic input adapter or KO-5 high grade 5 ft Mic input adapter cable. For computers (PC or Mac) without a 3.5mm Mic input jack, use USB-A adapter with KO-A or KO-5 adapter cable.

Price: $220   Qty:  

Computer options  



Computer Options


KO-A PC/Laptop mic adapter
KO-A Adapter
3.5mm female mono to 
3.5mm male stereo plug


High grade 5 ft. High grade PC/Laptop microphone adapter cable (2mm OD)
KO-5 Adapter cable
5' high grade cable with
3.5mm female mono to 
3.5mm male stereo plug


USB adapter
USB-A Adapter
3.5mm female stereo Mic in &
3.5mm stereo headphone out
(KO-A or KO-5 required)

Free ground shipping Continental US           


Volume and/or Government/Educational Discount may apply

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Configure your own system

 

The CM-3's contemporary design affords discrete setup at any conference table. It is a so-called boundary type microphone, where the hard reflective surface (the conference table) it is placed on constitutes the boundary. Taking advantage of the natural boundaries has resulted in a small  compact design with it's main body fitting in the palm of a hand.CM-3 Conference Microphone for ALDs and Voice Recording A dense body composition combined with large rubber feet prevents skidding on any surface and reduces annoying mechanical noises usually associated with conference arrangements. To enhance intelligibility, the microphone has been designed to provide a smooth boost in the frequencies around 3 kHz. With it's unique daisy-chain capability, even the longest conference table can be adequately covered for the hard of hearing as well as for recording meetings.

The CM-3 conference microphone works with all brand name assistive listening devices, voice recording devices employing electret microphones and all computers. Most assistive listening devices such as personal FM systems can power at least two CM-3 microphones. Computers and base station transmitters at least four(4). Although not all, most computers with 3.5mm microphone input jacks require the microphone plug to be a 3.5mm stereo type plug. Since the CM-3j microphone's daisy-chain capability is based on mono plugs, a mono to stereo adapter may be required. For computers without a 3.5mm microphone input jack, a USB audio adapter is required. When using this adapter, it is important to make sure that the proper microphone (USB PnP Sound Device) is selected in the application tool box or in Windows control panel "Sound" "Recording". Also, make sure to set "Properties" for "Level" or "Microphone boost" appropriately.

For assistive listening applications, the typical pick-up range is 8-12 feet. However, the realized pick-up range may vary from 5 to 15 feet depending on environmental conditions and individual user's discrimination Dual conference mics on table score. However, one of the CM-3's main features is it's daisy-chain capability. The effective pickup range can be expanded substantially by daisy chaining two or more CM-3 conference microphones together with Y-splitters and extension cords.. If more than four microphones are required, we recommend the use of an automatic microphone mixer such as the Audio-Technica AT-MX341a SmartMixer. When ordering the mixer from Centrum Sound, it is supplied with with four 12' input cables and one output cable with 3.5 mm mini plug. The mixer can then support four (4) CM-3jD dual packages for a total of eight (8) microphones with only two open at any time.

Download CM-3 Information sheet
Download CM-3j User Guide
Download AT-MX341 SmartMixer information

 

CM-3 Parts

Free shipping Continental US for orders over $50      

CM-3j conference microphone

CM-3v Conference microphone with 2.5mm angle plug for Phonic Ear Easy Listener
Qty: Price: $100     Substitute for Phonic Ear AT0720

USB adapter

USB-A USB 2.0 Stereo Sound Adapter with Mic-In and Headphone-Out
Qty: Price: $25     KO-A or KO-5 adapter required

KO-A PC/Laptop mic adapter

KO-A PC/Laptop microphone adapter (3.5mm female mono to male stereo)
Qty: Price: $6

High grade 5 ft. High grade PC/Laptop microphone adapter cable (2mm OD)

KO-5 5 ft. High grade durable PC/Laptop microphone adapter cable
(3.5mm female mono to male stereo, cable 2mm OD)
Qty: Price: $40

Y-Splitter

KKJ-Y Y-Splitter for joining two microphones together
Qty: Price: $5

10 ft High grade durable extension cord (2mm OD)

KJ-10 10 ft High grade durable extension cable (2mm OD)
Qty: Price: $45

KJ-12 Standard extension cord

KJ-12 12 ft Extension cable (4mm OD)
Qty: Price: $16

KJ-20 20 ft Extension cable (4mm OD)
Qty: Price: $20

Free shipping Continental US for orders over $50      


Volume and/or Government/Educational Discount may apply

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