EAW Dual 12-Inch Horn Subwoofer KF940 - Manual

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel 800 992 5013 / 508 234 6158 fax 508 234 8251 www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0353 (A) KF940 June 2005
K F 9 4 0 S p e c i f i c a t i o n s
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DESCRIPTION
•
Extraordinary impact
• High efficiency
•
Extended response
The KF940 is a horn loaded subwoofer that provides output
levels, frequency response extension, and efficiency completly
out of proprotion to its size. Widely known as the SuperSub™,
The KF940 is engineerd to be used in arrays of four or more to
produce extremely high output sub bass response to the very
bottom of the audible spectrum.
To provide the 13-foot horn length needed for the desired
enclosure size, EAW Engineers used advaced, bent rather than
folded horn technology. Folding creates sharp corners that do not
allow the expanding sound wave front to maneuver well above
certain frequencies. This reduces output and increases distortion
through air turbulence. Bending instead of folding allows all
frequencies to easily pass without interference. This minimizes
size without minimizing sound quality and output. The two 12-in
drivers are specially designed to endure the extreme conditions
the SuperSub imposes.
For portability, the KF940 includes balance-optimized handles
and a heavy duty, caster pallet that bolts to its rear.
The KF940 is appropriate for any application requiring extremely
high output levels of sub bass information. Relatively small
SuperSub™ arrays have successfully filled the largest stadiums
and arenas with high impact, sub bass information. Applications
include stadiums concert tours, nightclubs, raves, dance clubs,
houses of worship, corporate A/V, and theatres.
The KF940 is designed to be used with today's sophisticated
digital signal processing to optimize the LF response. EAW's MX
Series processors are recommended for the required crossover
and equalization. Six Year Warranty.
DUAL 12 INCH HORN SUBWOOFER
See NOTES TABULAR DATA for details, half space = floor-mounted
CONFIGURATION
Subsystem
Transducer Loading
SUB 2x 12 in cone Horn-loaded
Operating Mode
Amplifier Channels External Signal Processing
Single-amp LF1/ LF2 DSP w/1-way filter
Dual-amp LF1, LF2 DSP w/1-way filter
PERFORMANCE 1
Operating Range 23 Hz to 185 Hz
Nominal Beamwidth
Horz 360°
Vert 360°
Axial Sensitivity (SPL)
LF1/LF2 (whole space) 106 dB
22 Hz to 173 Hz
(half space) 116 dB 22 Hz to 173 Hz
4x KF940 (whole space) 110 dB 22 Hz to 185 Hz
Input Impedance (ohms)
Nominal Minimum
LF1/ LF2 4 4.5 @ 35 Hz
LF1, LF2 8 (each) 9.1 @ 33 Hz (each)
High Pass Filter
High Pass =>24 Hz, 12 dB/octave Butterworth
Accelerated Life Test 2
System LF1/LF2 80 V 1600 W @ 4 ohm
LF1, LF2 80 V (each) 800 W @ 8 ohm (each)
Transducer (AES) 1000 W (each)
Calculated Axial Output Limit (SPL)
Average Peak
LF1/LF2 (whole space)138 dB 144 dB
(half space) 148 dB 154 dB
4x KF940 (whole space) 142 dB 148 dB
ORDERING DATA
Description Part Number
KF940 Dual 12 inch Subwoofer Black 510655
(Caster Pallet included)
Optional Accessories
None
1 To achieve specified performance, the listed external signal processing with EAW-provided settings is required.
2 For recommendations to select power amplifier size refer to : “HOW MUCH AMPLIFIER POWER DO I NEED?” on the EAW web site.
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