Biamp CM20DTS 2-Way 4.25-Inch Ceiling Loudspeaker, Pair

The versatile Desono CM20DTS 4.25” two-way design built-in ceiling loudspeaker produces a dynamic and warm sound ideal for high-quality background music and voice reproduction. The back can with only 83.5mm (3.287”) built-in depth is probably the shallowest in his kind. The uncompromised sound quality and controlled sound performance makes it suitable for any kind of ceiling structure. The CM20DTS has a rotatable 70/100-volt power tapping selector on the front and offers 16 ohms connectivity. The thin edge grill with integrated neodymium grill fixing magnets will blend this top-notch loudspeaker in any design environment.

The CM20DTS utilizes a 5-position switchable transformer ranging from 1.25W to 20W with low-impedance bypass for constant-voltage operation, making it an excellent choice for large areas of BGM.

Designed with the installer in mind, they can be blind-mounted from below the ceiling, and feature a magnetic grille for easy toolless installation and removal that can also be painted to match the room decor. Additionally, the tap switch is located on the face of the loudspeaker, so adjustments can be made without requiring ceiling access.

Desono CM20DTS loudspeakers are an ideal choice for a multitude of environments that demand superior speech intelligibility and full range music reproduction.

Key Features

• Zoom Certified
• 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

Technical Specifications

Operating Mode
Passive
Operating Environment
Indoor
Operating Range (-10dB)
90 Hz to 22 kHz
Nominal Beamwidth (H x V)
150 x 100 Degrees
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)
PHYSICAL
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