User Manual

INTRODUCTION
DESCRIPTION
The SD4 SuperDispersion
®
omnidirectional drop tile ceiling speaker array has 360° of seamlessly smooth
coverage which greatly improves speech intelligibility and provides powerful crystal clear music
reproduction. Each 2' x 2' Array can replace over a dozen conventional ceiling speakers. Takes minutes to
install, just remove one ceiling title and drop the SD4 into any standard drop ceiling. The 8 ohm and 70 volt
inputs are compatible with any commercial or stereo sound system.
FEATURES
� SuperDispersion
®
360 x 180 omnidirectional coverage
� Engineered for voice, paging and music applications
� Infinite-baffle in-ceiling speaker drops into standard 2x2 ceiling tile openings
� Impedance: 8 ohms nominal with built-in 70 volts (4, 8, 16, 32, 64 watt taps),
easily adjustable by rotating switch
� Safety cable kit included
� 4 - 6.5” high compliance aluminum woofers with ported bass response and
high frequency dome tweeters
� Uniquely designed fire retardant paintable ABS housing may be painted to match any décor
� Metal backbox that is acoustically engineered and sealed for maximum sonic performance
� Powerful – 160 watts at 8 ohms, 64 watts at 70 volts
SPECIFICATIONS
System Type
Power Handling
Frequency Response
Sensitivity
Woofers
70V Taps
Impedance
Dimensions (H x W x D)
Omnidirectional Ceiling Speaker
160 watts
35 Hz - 20 kHz
92dB
Aluminum
4, 8, 16, 32, 64 watts
8 Ohms / 70V
23.75” (603.25 mm) x 23.75” (603.25 mm) x 5.75” (146.05 mm)
Dispersion 180 x 360 degrees
Driver Complement 4 full-range 6.5” drivers
Shipping Dimensions (H x W x D)
28” (711.2 mm) x 28” (711.2 mm) x 9.25” (234.95 mm)
Net Weight 25 lbs (11.34 kg)
Shipping Weight 32 lbs (14.5 kg)