SPECIFICATIONS
Frequency Range (-10 dB) 74 Hz – 20 kHz
Power Capacity (at low-Z) 60 Watts Continuous Program Power
30 Watts Continuous Pink Noise
Transformer Taps 25 W, 12.5 W, 6.3 W @ 70V or 100V
(plus 3.2 W @ 70V only)
Frequency Response (±3 dB) 100 Hz – 20 kHz
Nominal Sensitivity 87 dB
Nominal Coverage Angle 120° conical coverage
Directivity Factor (Q) 7.6
Directivity Index (DI) 8.1 dB
Rated Maximum SPL 102 dB @ 1 m (3.3 ft) average, 108 dB peak
Nominal Impedance 8 ohms (in direct/bypass 8Ω setting)
Crossover Network 12 dB/oct (2nd order) low-pass to LF driver,
12 dB/oct (2nd order) high-pass to HF driver
LF Driver 100 mm (4.0 inch) with polypropylene cone, butyl rubber surround, anodized aluminum voice coil former, high temperature voice coil
HF Driver 19 mm (3/4 in), highly-damped treated-silk dome, Kapton™ voice coil, liquid cooling, wide dispersion waveguide
Input Connector Removable locking 4-pin connector with screw-down terminals.
Max wire size 12 AWG (2.5 mm2)
Connector Wiring Pin 1 = + In; Pin 2 = - In; Pin 3 = + Loop Thru; Pin 4 = - Loop Thru
Strain Reliefs Strain relief for two cables or two flex conduits via coupled clamping mechanism
Materials ABS baffle with UL94-V0 and UL94-5VB flame class fire rating. Zinc-plated
steel backcan
Safety Agency UL1480, UL2043, NFPA90 & NFPA70; S7232/UL Listed, Suitable for use in air handling spaces, Signaling Speaker; 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 196 mm diameter x 181 mm depth from back of baffle
(7.7 in diameter x 7.1 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 thick-ceiling dog-ears available for up to 55 mm (2.2 in) ceiling thicknesses
Safety Seismic Attachment One point, top surface
Net Weight 2.2 kg (4.8 lbs, one speaker)
Shipping Weight 8.2 kg (17.9 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, removable locking multi-pin connector, grille
Optional Accessories 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 dog-ears for 8 speakers)
MTC-48TR tile rail for 1200 mm (4 ft) tile spans
4.4 
