C-660 is a full-range ceiling speaker consisting of a 165 mm (6.5 inch) high tech cone driver and a 19mm soft-dome liquid cooled tweeter mounted in a vented, paintable baffle made of UV resistant UL94-V0 and UL94-5HB material, with a pre-attached blindmount backcan for quick and easy installation.
Components:
• 165 mm (6.5 in) high output driver with polypropylene cone and butyl rubber surround
• 19 mm (0.75 in) soft-dome liquid-cooled tweeter
Blind-mount backcan for quick and easy install
Dual conduit/cable clamps
Combined 70V/100V and low impedance direct operation
•50 Watts at 8Ω nominal setting
• 30W multi-tap at 70V/100V
62 Hz – 20 kHz bandwidth with wide 110° coverage
High 91 dB sensitivity for high maximum SPL
White or black (-BK)
SPECIFICATIONS
Frequency Range (-10 dB) 62 Hz – 20 kHz
Power Capacity (at low-Z) 100 Watts Continuous Program Power
50 Watts Continuous Pink Noise
Transformer Taps 30 W, 15 W, 7.5 W @ 70V or 100V
(plus 3.8 W @ 70V only)
Frequency Response (±3 dB) 96 Hz – 15 kHz
Nominal Sensitivity 91 dB
Nominal Coverage Angle 110° conical coverage
Directivity Factor (Q) 7.8
Directivity Index (DI) 8.2 dB
Rated Maximum SPL 108 dB @ 1 m (3.3 ft) average, 116 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 165 mm (6.5 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;
Dimensions 253 mm diameter x 225 mm depth from back of baffle
(10.0 in diameter x 8.8 in depth)
Ceiling Cutout Size Circular cutout with 223 mm (8.8 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
Safety Seismic Attachment One point, top surface
Net Weight 3.4 kg (7.4 lbs, one speaker)
