EAW Cinema SB284C User manual

CINEMA SERIES
One Main Street, Whitinsville, MA 01588 • [phone] • FAX [phone] • Email [email protected] • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • SB284C PUB#888134 Rev(A)/6/1/99 • Printed In USA
THX is a registered trademark of Lucasfilms Ltd.
Technical Specifications SB284C
PRODUCT INFORMATION
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 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
barrier strip, which accomodates 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. All external compo-
nents feature a textured black finish to eliminate the reflection of
light through perforated cinema screens.
1.50
7.28
RIGHT SIDE
FRONT BACK
.81
1.06
1.50
5.28
29.75
23.75
LEFT SIDE
48.25
TOP
SB284C
ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED.
BOTTOM
510136
exp 1/15/97 shb
THX is a registered trademark of Lucasfilm,. Ltd.

CINEMA SERIES
One Main Street, Whitinsville, MA 01588 • [phone] • FAX [phone] • Email [email protected] • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • SB284C PUB#888134 Rev(A)/6/1/99 • Printed In USA
THX is a registered trademark of Lucasfilms Ltd.
Technical Specifications SB284C
DESCRIPTIVE DATA
Sub Subsystem & Loading 2x 18-in, vented
Cabinet Type (shape) Rectangular
Enclosure Materials 3/4-in MDF, 15mm birch baffle
Finish Textured Black
Connectors Dual-terminal barrier strips
Grill Vinyl Coated Perforated Steel
NOMINAL DATA
Frequency Response (1 Watt @ 1m)
±3 dB 30 Hz - 300 Hz
Axial Sensitivity (dB SPL, 1 Watt @ 1m)
99
Impedance (Ohms)
4
Power Handling, AES Standard (Watts)
1600
Calculated Maximum Output (dB SPL @ 1m)
Peak 137.0
Long Term 131.0
Dimensions Inches Centimeters
Height 29.75 75.6
Width 48.25 122.6
Depth 23.75 60.3
Weights Pounds Kilograms
Net Weight 218 98.9
Shipping Weight 233 105.7
COMPONENTS & CONSTRUCTION
The SB284C is a high output, extended bandwidth subwoofer
optimized specifically for cinema use. It features dual high-power
18-in low frequency transducers, each mounted in its own optimally
vented subenclosure.
The enclosure is constructed of 3/4-in Medium Density Fiberboard
except for the baffle plate which is 15mm, void-free, cross-grain-
laminated birch plywood. Extensive internal bracing is employed to
minimize panel resonances resulting from the large acoustical
energies generated within the enclosure and maximize acoustical
energy transfer.
Input connectors are 2-terminal barrier strip, designed to accommo-
date bare wire, tinned leads or spade lugs. The enclosure is finished
in textured black non-reflective paint.