Biamp Desono CM20DTS 4.25” two-way thin edge design ceiling loudspeaker 100-70 volt / 20 watts, 16 ohms / 60 watts, white, front frame integrated neodymium magnets and shallow back can (Pair)

Biamp SKU: 911.0631.900
No reviews

Sale price$320.00


Sold as a pair, with an aesthetically pleasing design and a dynamic natural sound, the Community CM20DTS 4.25" 2-way paper cone ceiling speaker is ideal for high-quality background music and voice reproduction in high visibility environments.


A shallow depth of 3.3" (83.5mm) makes the CM20DTS suitable for any ceiling structure with little to no modification. Featuring a 4.25" coated paper cone woofer and 1" silk dome tweeter, the CM20DTS produces clear full-range audio with very low distortion. Integrated 3-step protection ensures the speaker operates without fail at high power loads for peace of mind.


The CM20DTS can operate on 70/100V lines with power taps available at 20, 10, 5, and 2.5 watts or as a low impedance 16-ohm speaker. The tap switch is conveniently located on the speaker's front beneath the easily removable magnetic grille, allowing adjustments without requiring ceiling access.

Community CM20DTS Applications:

  • Conference Rooms
  • Hallways
  • Training Rooms
  • Multipurpose Rooms
  • Lunch Rooms
  • Manufacturing Areas
  • Offices
  • Waiting Rooms

Community CM20DTS Includes:

  • Tile rails
  • Tile rail spacers
  • Cutout template
  • Low profile, requires only 3.3" (84 mm) mounting depth
  • High speech intelligibility coupled with full-range music reproduction
  • Thin-edge, magnetically attached grille
  • Tap switch allows for 70V/100V or 16Ω low impedance operation
  • Tuned bass reflex port for optimized low frequency performance
  • Loudspeaker overload protection for 24/7 failsafe operation
  • ETL listed to conform with UL Std 1480A and UL 2043; Certified to CSA C22.2#62368-1

Community CM20DTS Specifications

  • Operating Mode: Passive
  • Operating Environment: Indoor
  • Operating Range (-10dB): 90 Hz to 22 kHz
  • Nominal Beamwidth (H x V): 150° x 100°
  • Transducers
    • LF 1 x 4.25" (108 mm) treated paper cone
    • HF 1 x 1" (25 mm) soft dome
  • Continuous Power Handling @ Nominal Impedance
    • 25V
    • 40W @ 16Ω (160W peak)
  • Nominal Sensitivity @ 1m
    • @ 1W: 87 dB
    • @ 2.83V: 84 dB
  • Nominal Maximum SPL @ 1m
    • Peak: 109 dB
    • Continuous: 103 dB
  • Transformer
    • 70V: 20W, 10W, 5W, 2.5W, 1.25W
    • 100V: 20W, 10W, 5W, 2.5W
  • Protection: 3-step self-resetting protection
  • Recommended Amplifiers: 40W - 80W @ 16Ω (25V - 36V)
    • Input Connection (1): 4-way Euroblock connector with permanent pass-through
    • Mounting Provisions: 2 mounting clamps with grip range of 0.2" - 1.6" (3 - 41 mm); Cover plate with 0.75" (22 mm) NPT knockout for conduit connectors
    • Safety Features: 2 hang points
    • Compliance
    • ETL listed to comply with UL 1480A and UL 2043;
    • Certified to CSA C22.2#62368-1;
    • Suitable for use in air handling spaces per NFPA 70, NFPA 90
    • Conforms with City of Chicago Codes
    • Dimensions: H x Dia. 3.3" x 8.8" (84 mm x 223 mm)
    • Cutout Diameter: 7.6" (193 mm)
    • Weight: 4.4 lbs (2.0 kg)
    • Finish: Refer to the Technical Drawings (page 3)
    • Accessories (included): Tile rails; tile rail spacers; cutout template

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

Customer Reviews

Be the first to write a review

Nationwide Audiovisual Services - Design, Installation & Support - A Partner You Can Trust

Creation Networks offers audiovisual & video conferencing services for projects of all sizes - from a single meeting room to a nationwide deployment. You can count on us for your audiovisual technology system's design, configuration, programming, installation, and support. It is important that you get Top Quality products from the best manufacturers, and then purchase from a trusted partner who tests and installs what they sell, giving you the best value. Our goal at is to only represent the top products and test everything before recommending or selling our solutions.


Our AV experts have earned their professional certifications to design, build, and manage the best AV services for you. View Our Certifications

Product Selection

Choose from products and national brands to find the right technology for your needs. View Our Vendor Partners