Overview

Ceiling Tile Beamforming Mic Array

The BMA CT is a patented ceiling tile beamforming mic array that blends in perfectly with today’s drop ceilings.

Built in acoustic echo cancellation, noise cancellation, and beam selection eliminate the need for per-beam processing in a DSP mixer — requiring fewer DSP mixer resources.

Built in 2x10 Watt into 8-ohm power amplifier conveniently drives loudspeakers.

Product Details

  • Ceiling Tile Beamforming Mic Array
  • Enables multi-array setups that can utilize a single low channel count DSP mixer.
  • Daisy chain ceiling tiles via P-Link for larger conference setups – for simpler wiring and longer distances compared to networked “home run” connections.
  • Use P-Link to daisy chain additional peripherals such as wireless mics, USB Expanders, and GPIO Expanders.
  • Each ceiling tile microphone array supports long distance P-Link mode with 200 meters between tiles, for a total cable reach of 600 meters
  • Built in 2x10 Watt into 8-ohm power amplifier conveniently drives loudspeakers.
  • Integrated features can significantly reduce system design complexity, simplify installation, streamline configuration and programming, consume less rack space, and lower cost.
  • Adaptive steering (think of it as smart switching) - no need to adjust individual beams - for impeccable room coverage.
  • ClearOne’s BMA technologies are protected by at least a dozen patents and pending patent applications.
  • Supports three different ceiling grid types: 24-inch for US, 600 mm, and 625 mm for international.
24 Microphones
- 1 Channel In (Uses P-Link channels or C-Link channels for speakers, no input channels in CP2)
Number of Beams
Two patterns, either 5 or 6 beams
Polar Pattern
Custom
Frequency Response
150Hz – 16kHz, +/- 3dB
Dynamic Range
150Hz – 16kHz, > 70dB
Amplifier Output
Type
5.08mm Black Header, Male, Phoenix type Euroblock
Audio
2 Channels
Output Power
2x10W Max, 8Ω load
Frequency Response
20Hz – 22kHz @ +10dBu, +/- 0.5dB
THD + Noise
20Hz – 22kHz @ +10dBu, 1W, < 0.2%
Dynamic Range
20Hz – 22kHz @ +20dB, > 102dB, with 20kHz digital low pass filter
Crosstalk
Channel to Channel, stimulus at +20dBu to receptor 10W output 8Ω load, 20Hz – 22kHz, < 60dB
LED
4 LED indicators on one end of unit
Mute/Un-mute configuration with 8 color options, two blink patterns and warning indications
Configuration
Beam
enable/disable
Acoustic Echo Cancellation (AEC)
on/off
Noise Cancellation (NC)
on/off
Filters
All Pass, Low Pass, High Pass, Notch, PEQ
- Automatic Level Control (ALC) on/off
Gain
adjust
Mute
on/off
Gate
auto /manual
P-Link Peripheral Bus
P-Link In & Out
Proprietary Network
Ports Type
RJ-45
Cable
RJ45 Cat5e, Cat6, Expandable
Distance
Up to 198 m
Daisy-Chain
Up to 3 Array units and additional P-Link compatible devices with each supported CONVERGE Pro 2 unit in the same chain; Up to 6 Array units in the same chain with 2 supported CONVERGE Pro 2 units connected through C-Link
Long Distance P-Link
Increases P-Link distance from 200 ft. to 650 ft.; (200M) max cable distance between any two units; Cat6, 550 MHz, 23 AWG, solid conductor cable; Do not use Copper Clad Aluminum (CCA) cable
Power Selection Switch
Type
Slide Switch: Slide toward P-Link to power device by P-Link; Slide toward PoE to power device by PoE Injector
Configuration & Administration Software
- Pro CONSOLE® Software
Mounting
- Drop in replacement for 24 inch, 600mm, or 625mm ceiling tile
Power & Thermal
Power Type
PoE
Port Type
RJ-45
Power Source
PoE Injector or equivalent
PoE
IEEE802.3at compliant devices providing 56V and 640 mA (36 W); P-Link In - Mode B; PoE In - Mode A and Mode B (Each BMA CT requires its own 802.3at compliant power injector if loudspeakers are being used.)
Power Consumption
100-240VAC, 50/60Hz; 9.1 Watt Typical without speaker amp; 38W at max power 1kHz (2 x 10W)
Thermal
130 BTU/Hr at max power
Operating Temperature
14° F/-10° C to 104° F/40° C ambient temperature
General
Dimension 24” BMA CT (WxHxD)
602.5 x 602.5 x 54.1mm
Dimensions 600 mm BMA CT (WxHxD)
592.5 x 592.5 x 54.1 mm
Unit Weight
3.5kg
Shipping Weight
5.2kg