TECHNICAL SPECIFICATIONS SB284C
CINEMA SYSTEMS
DESCRIPTIVE DATA
Part Number
999082
Sub System & Loading
2x 18-in, vented
System Crossover
100 Hz recommended
Recommended High-Pass
Frequency (24 dB/octave)
20 Hz
Cabinet Type (shape)
Rectangular
Enclosure Materials
3/4-in Medium Density Fiberboard,
15 mm birch baffle
Finish
Textured black
Connectors
Dual-terminal barrier strips
Grille
Vinyl coated perforated steel
Dimensions
inches
millimeters
Height
29.75
756
Width
48.25
1226
Depth
23.75
603
Weights
pounds
kilograms
Net Weight
218
98.9
Shipping Weight
233
105.7
PRODUCT INFORMATION
APPLICATION
• For subwoofer channel of cinema soundtrack
• THX® approved
The SB284C cinema subwoofer loudspeaker system uses dual 18-in
cone transducers each mounted in its own optimally vented suben-
closure to fill large capacity theaters theaters with high definition
sub bass information at earth-shaking output levels. This system has
been approved by the THX® division of Lucasfilm, Ltd., for use in THX
certified theaters.
The SB284C’s optimally vented enclosure uses enclosure resonance to
increase sub bass response while limiting driver excursion. This
method produces less distortion and minimizes driver strain while
extending sub bass response to the lower limits of human hearing.
Special effects will have greater clarity, greater power and greater
impact.
Each 18-in woofer is individually accessible via a two-terminal bar-
rier strip, which accommodates bare wire, tinned leads or spade lugs,
located on the side of the enclosure for convenient access in
cramped installation areas.
The use of multiple SB284C’s provides even greater output
capability and further extends low frequency response.
