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 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) is backordered and will ship as soon as it is back in stock.
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Biamp Desono CM20DTS 4.25” two-way thin edge design ceiling loudspe...
Product Overview
The Biamp Desono CM20DTS is a 4.25-inch two-way thin-edge ceiling loudspeaker, sold as a pair, designed for high-quality background music and voice reproduction in high-visibility environments. It can operate on 70V/100V lines or as a 16-ohm low-impedance speaker. A shallow 3.3-inch mounting depth suits most ceiling structures.
Product Description
Sold as a pair, the CM20DTS 4.25" two-way paper cone ceiling speaker delivers a dynamic natural sound for high-quality background music and voice reproduction.
A shallow depth of 3.3" (83.5 mm) makes it suitable for nearly any ceiling structure with little to no modification. A 4.25" coated paper cone woofer and 1" silk dome tweeter produce clear full-range audio with very low distortion.
The CM20DTS operates on 70V/100V lines with taps at 20, 10, 5, and 2.5 watts, or as a 16-ohm low-impedance speaker. The tap switch sits on the front of the speaker beneath the magnetic grille, allowing adjustment without ceiling access.
Integrated three-step self-resetting protection keeps the speaker operating reliably at high power loads.
Key Features
- Low profile — Requires only 3.3 in (84 mm) of mounting depth for installation in most ceilings.
- Full-range reproduction — Combines high speech intelligibility with full-range music reproduction from a 4.25" woofer and 1" soft dome tweeter.
- Magnetic grille — Thin-edge grille is magnetically attached for a clean appearance.
- Selectable operation — Tap switch allows 70V/100V or 16Ω low-impedance operation, accessible from the front.
- Tuned bass reflex — Tuned port optimizes low-frequency performance.
- Overload protection — Three-step self-resetting protection enables 24/7 failsafe operation.
- Listed — ETL listed to UL 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° |
| Transducers | 1 x 4.25" (108 mm) treated paper cone LF; 1 x 1" (25 mm) soft dome HF |
| Power Handling | 40W @ 16Ω (160W peak) |
| Transformer Taps | 70V: 20W, 10W, 5W, 2.5W, 1.25W; 100V: 20W, 10W, 5W, 2.5W |
| Nominal Sensitivity @ 1m | 87 dB @ 1W |
| Maximum SPL @ 1m | 103 dB continuous, 109 dB peak |
| Protection | 3-step self-resetting |
| Dimensions | 3.3 x 8.8 in (84 x 223 mm) H x Dia. |
| Cutout Diameter | 7.6 in (193 mm) |
| Weight | 4.4 lbs (2.0 kg) |
| Compliance | ETL listed (UL 1480A, UL 2043); CSA C22.2#62368-1; NFPA 70/90 |
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