BMA CT

The BMA CT is a patented ceiling tile beamforming microphone 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.

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ClearOne BMA CT
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COMPATIBLE WITH

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Integrated features can significantly reduce system design complexity, simplify installation, consume less rack space, and lower cost.

Key Highlights

  • Single workflow for configuration using Pro Console® software. No need to program separate components: Ethernet switch, BMA CT, Dante® controller, and DSP mixer.
  • Daisy-chain up to three ceiling tiles via P-Link for larger conference setups – for simpler wiring and longer distances compared to networked “home run” connections.
  • ClearOne’s BMA technology is protected by at least a dozen patents and pending patent applications.
  • 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
  • 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!
  • Built-in 2 x 10 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.

Applications

  • Audio conferencing
  • Video conferencing

Workspaces

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

Integrated features can significantly reduce system design complexity, simplify installation, consume less rack space, and lower cost.

24 MICROPHONES

  • 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

  • Uses P-Llink channels and C-Link channels based on configuration
  • 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 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
    • Notch
  • 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 P-Link 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

  • Ceiling mount (24” or 600mm drop-ceiling grid)

POWER & THERMAL

  • Power Type: PoE
  • Port Type: RJ-45
  • Power Source: PoE Injector or equivalent
  • PoE: IEEE 802.3at compliant devices providing 56V and 640 mA (36 W).
  • P-Link In - Mode B
  • PoE In - Mode A and Mode B
  • *BMA CT requires its own PoE (IEEE 802.3 at compliant) if 2x10W speakers are driven
  • 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 IN REV 8.3 (and below):
    • Product Dimension: 23.72 x 23.72 x 2.13 in (602.5 x 602.5 x 54.1 mm)
    • Product Weight: 7.71 lbs (3.5 kg)
    • Shipping Weight: 11.46 lbs (5.2 kg)
  • 24 IN REV 8.4 (and above):
    • Product Dimension: 23.72 x 23.72 x 2.13 in (602.5 x 602.5 x 54.1 mm)
    • Product Weight: 11.1 lbs (5.0 kg)
    • Shipping Weight: 14.2 lbs (6.4 kg)
  • 600 mm:
    • Product Dimension: 23.33 x 23.33 x 2.13 in (592.5 x 592.5 x 54.1 mm)
    • Product Weight: 9 lbs (4.1 kg)
    • Shipping Weight: 12.85 lbs (5.83 kg)

SUPPORTED CONVERGE® PRO 2

  • 910-3200-001 CONVERGE Pro 2 128
  • 910-3200-009 CONVERGE Pro 2 128VT
  • 910-3200-009-D CONVERGE Pro 2 128VTD
  • 910-3200-008 CONVERGE Pro 2 48VT
  • 910-3200-008-D CONVERGE Pro 2 48VTD
  • 910-3200-004 CONVERGE Pro 2 120

ACCCESSORIES

  • 910-3200-202 PoE Power supply kit for BMA CT
  • 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
  • 910-3200-205-AI Brackets, convert 600 to 625 mm
  • 910-3200-205-CB BMA CT Conduit Box

MOUNTS FOR NON-TILE CEILINGS

  • 910-3200-210 BMA Surface-Mount Kits 24in
  • 910-3200-210-I BMA Surface-Mount Kits 600mm
  • 910-3200-211 BMA Recessed-Mount Kits 24in
  • 910-3200-211-I BMA Recessed-Mount Kits 600MM

PART NUMBERS

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

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BMA CT FAQs

How does the built-in processing reduce DSP mixer requirements?

The system handles echo cancellation, noise reduction, and beam selection internally, eliminating the need for individual beam processing in your DSP mixer. This significantly reduces the load on your DSP resources and simplifies system configuration.

What are the cost benefits of requiring fewer DSP mixer resources?

By reducing DSP mixer requirements, you can potentially use a smaller, more cost-effective DSP unit. This can lead to significant cost savings in both hardware and installation while maintaining premium audio quality.

What makes the acoustic echo cancellation different from traditional systems?

The system's integrated acoustic echo cancellation processes audio before it reaches the DSP mixer, providing more efficient and effective echo removal. This built-in processing ensures clearer audio quality while reducing the processing burden on external components.

Can this system be used with existing DSP mixers?

Yes, the system is compatible with most commercial DSP mixers. Its built-in processing capabilities actually extend the capacity of your existing DSP mixer by handling key audio processing tasks internally, making it an excellent choice for both new installations and upgrades.