General Specifications
- Frequency Range (-10 dB)
- 58 Hz – 20 kHz
- Frequency Response (±3 dB)
- 80 Hz – 16 kHz
- Power Capacity (at low-Z)
- 180 Watts Continuous Program Power
- Maxium Input Voltage
- 31.8 V RMS (2hrs), 63.6 V peak
- Nominal Sensitivity
- 92 dB
- Nominal Coverage Angle
- 90° conical coverage
- Directivity Factor (Q)
- 6.0
- Directivity Index (DI)
- 7.8 dB
- Rated Maximum SPL
- 112 dB @ 1 m (3.3 ft) average, 118 dB peak
- Nominal Impedance
- 8 ohms (in direct/bypass 8Ω setting)
- Transformer Taps
- 60 W, 30 W, 15 W @ 70V or 100V (plus 7.5 W @ 70V only)
- Recommended Protective High-Pass
- 45 Hz high-pass (24 dB/oct) for 8ohm operation, 60 Hz for 60 W tap, 50 Hz for 30 W, 15 W & 7.5 W tap 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
- 200 mm (8.0 inch) with polypropylene cone, butyl rubber surround, anodized aluminum voice coil former, high temperature voice coil
- HF Driver
- 25 mm (1.0 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
- Safety Seismic Attachment
- One point, top surface
- 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 with safety tether.
- Optional Accessories
- MTC-47NC new construction bracket; MTC-47MR mud-ring construction bracket; MTC-TCD thick-ceiling dog-ears for ceiling thicknesses up to 60 mm (2.4 in, ordering one set = 24 dogears for 6 speakers); MTC-48TR tile rail for 1200 mm (4 ft) tile spans
Dimensions
- Diameter
- 307 mm (12.1 in)
- Depth
- 274 mm (10.8 in)
- Ceiling Cutout Size
- Circular cutout with 282 mm (11.1 in) diameter (cardboard cutout template included)
- Ceiling Thickness Range
- Up to 38 mm (1.5 in) with stock dog-ears. MTC-TCD thick-ceiling dog-ears available for up to 60 mm (2.4 in) ceiling thicknesses
- Net Weight
- 6.4 kg (14.1 lbs, one speaker)
- Shipping Weight
- 17.7 kg (39.0 lbs, pair in master carton)
