| { "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" ] } |