Frequency Response (-10dB): 68 Hz – 17 kHz
Frequency Response (±3 dB): 95 Hz – 15 kHz
Power Capacity (at low-Z): IEC System Long-Term Ratings (low-Z direct):
40 Watts Continuous Program Power
20 Watts Continuous Pink Noise (80W peak), 100 hr
Rated Noise Power: 15W (15W tap)
Rated Noise Voltage: 70V/100V (with 70V/100V tap settings)
Sensitivity: 84 dB (1kHz - 16 kHz)
EN54 Sensitivity (@ 4m): 72 dB (per EN54-24 spectrum and measurement conditions at 4 meters.)
Coverage Angle: 130° conical coverage (1 kHz - 16 kHz)
Coverage Angels(by Frequency)Conical (Vertical & Horizontal): 500 Hz: 180°1000 Hz: 175°2000 Hz: 170°4000 Hz: 160°
Reference Axis: Specification and measurement reference is directly on-axis vertically and horizontally, directly below the speaker as speaker it is installed in the horizontal ceiling plane
Directivity Factor (Q): 9.8
Directivity Index (DI): 7.4 dB
Maximum SPL (1m): 97 dB (low-impedance, 103 dB peak)
94 dB (top 70V/100 tap)
EN54: 84 dB (4m, top 70/100V tap)
Impedance: 8 ohms (in direct/bypass setting)
Transformer Taps: 15W, 7.5W, 3.8W @ 70V or 100V (plus 1.9W @ 70V only)
Fuse: Thermal Fuse, open temperature 152 degrees C, Rating >= 10A @ 250VAC
Drivers: 76 mm (3 inch) with polypropylene cone, butyl rubber surround, anodized aluminum voice coil former, high temperature voice coil
Connections: Input +, Input -, Earth (connected to backcan). Ceramic block with brass inserts (3.2 mm/0.126 in opening), accommodates 2.5 sq mm / 12 AWG wire.
Gland Nut/Strain Relief: Accommodates round jacketed cables 4.0 mm (0.16 in) through 9.0 mm (0.36 in)
Materials: ABS baffle with UL94-V0 and UL94-5VB flame class fire rating; Zinc-plated steel backcan
Safety Agency: EN54-24:2008 certified Type A (Certificate No. 0359-CPR-00485); Compliant with BS5839/8; UL1480, UL2043, NFPA90 & NFPA70; Suitable for use in air handling spaces, Signaling Speaker; rated IP-21 per IEC529/60529; Transformer UL registered per UL1876; ROHS, C-tick N108, CE compliant; Baffle meets UL94-V0 and UL94-5VB flammability rating; In accordance with IEC60849/ EN60849 systems
Dimensions (H x W x D): 196 mm diameter x 174 mm from back of baffle to back of gland nut (7.7 in diameter x 6.9 in in depth)
Ceiling Cutout Size: Circular cutout with 170 mm (6.7 in) diameter (cardboard cutout template included)
Ceiling Thickness Range: Up to 35 mm (1.4 in) with stock dog-ears. MTC-TCD thickceiling dog-ears available for up to 55 mm (2.2 in) ceiling thicknesses
Safety Seismic Attachment: One point, top surface
Net Weight: 1.6 kg (3.5 lbs, one speaker)
Shipping Weight: 6.7 kg (14.7 lbs, pair in master carton)
Included Accessories: C-ring support backing plate, 2 tile support rails (for 2 ft or 600 mm tile spans; optional MTC-48TR extension available for larger 4 ft or 1200 mm tile spans), cutout template, paint shield, grille
Optional Accessories: MTC-12WG high humidity grille MTC-24NC new construction bracket MTC-24MR mud-ring construction bracket MTC-TCD thick-ceiling dog-ears for ceiling thicknesses up to 55 mm (2.2 in, ordering one set = 24 dogears for 8 speakers) MTC-48TR tile rail for 1200 mm (4 ft) tile spans
Input Connectors: Ceramic block with brass inserts
Color: White
Backcan: formed steel (included "blind-mount")
Baffle/Rim: ABS baffle with UL94-V0 and UL94-5VB flame class fire rating.
Plenum Usage: Yes, backcan included
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