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BMA CT

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

Patented Ceiling Tile Beamforming Mic Array with a Superior Architecture for Reduced Complexity and Cost

Key Highlights

  • 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.
  • Adaptive steering (think of it as smart switching) - no need to adjust individual beams - for impeccable room coverage.
  • Integrated features can significantly reduce system design complexity, simplify installation, streamline configuration and programming, consume less rack space, and lower cost.
  • Daisy chain ceiling tiles via P-Link for larger conference setups – for simpler wiring and longer distances compared to networked “home run” connections.
  • Each ceiling tile microphone array supports long distance P-Link mode with 200 m / 650 ft between tiles, for a total cable reach of 600 m / 1950 ft
  • Single workflow for configuration using Pro Console® software. No need to program separate components: Ethernet switch, BMA CT, Dante® controller, and DSP mixer.
  • ClearOne’s BMA technology is protected by at least a dozen patents and pending patent applications.
  • Supports three different ceiling grid types: 24-inch, 600 mm, and 625 mm; as well as hard-ceiling mounts.
  • It’s all about the ClearOne architecture!

Applications

  • Audio Conferencing
  • Video Conferencing

Environments

  • Boardrooms
  • Conference rooms
  • Training centers
  • Lecture halls
  • Courtrooms
  • Telemedicine facilities

Patented Ceiling Tile Beamforming Mic Array with a Superior Architecture for Reduced Complexity and Cost

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
  • 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
  • Auto gate/Manual gate

P-Link Peripheral Bus

  • P-Link In & Out: Proprietary Network
  • Ports Type: RJ-45
  • Cable: RJ45 Cat5e, Cat6, Expandable
  • Distance: Up to 650 ft.
  • 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

MOUNTS FOR NON-TILE CEILINGS

  • Refer to BMA CT Non-Tile Ceiling Mounts Tech Note for more info
  • RAB Lighting SMKPANEL2X2 - Surface-mount kit
  • RAB Lighting RMKPANEL2X2 - Recessed-mount kit

Configuration & Administration Software

  • Pro CONSOLE® Software

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

Dimension & Weight (WxHxD)

  • 24” BMA CT: 23.72 x 23.72 x 2.13” (602.5 x 602.5 x 54.1mm)
  • 600 mm BMA CT: 23.33 x 23.33 x 2.13” (592.5 x 592.5 x 54.1 mm)
  • Unit Weight: 7.7lbs (3.5kg)
  • Shipping Weight: 11.5lbs (5.2kg)

Part Numbers

  • 910-3200-205: 24” White BMA CT
  • 910-3200-205-I: 600 mm White BMA CT

Supported CONVERGE® Pro 2

  • 910-3200-001 CONVERGE Pro 2 128
  • 910-3200-001-D CONVERGE Pro 2 128D
  • 910-3200-002 CONVERGE Pro 2 128T
  • 910-3200-002-D CONVERGE Pro 2 128TD
  • 910-3200-003 CONVERGE Pro 2 128V
  • 910-3200-003-D CONVERGE Pro 2 128VD
  • 910-3200-009 CONVERGE Pro 2 128VT
  • 910-3200-009 CONVERGE Pro 2 128VTD
  • 910-3200-005 CONVERGE Pro 2 48T
  • 910-3200-006 CONVERGE Pro 2 48V
  • 910-3200-008 CONVERGE Pro 2 48VT
  • 910-3200-008-D CONVERGE Pro 2 48VTD
  • 910-3200-004 CONVERGE Pro 2 120

Accessories

  • 910-3200-202 PoE Power supply kit for BMA CT and BMA CTD
  • 910-3200-205-01 Brackets to convert 600 to 625 mm
  • 910-3200-205-CB BMA CT Conduit Box
  • 910-3200-204-50 50 ft RJ45 CAT6 Cable
  • 910-3200-204-100 100 ft RJ45 CAT6 Cable
  • 910-3200-204-150 150 ft RJ45 CAT6 Cable
  • 910-3200-204-200 200 ft RJ45 CAT6 Cable

Resource Library

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