EasternAcoustic Works One Main Street Whitinsville, MA01588 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
KF940 Specifications group · S
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
bottomoftheaudiblespectrum.
To provide the 13-foot horn length needed for the desired
enclosure size, EAW Engineers used advaced, bent rather than
foldedhorntechnology.Foldingcreatessharpcornersthatdonot
allow the expanding sound wave front to maneuver well above
certainfrequencies.Thisreducesoutputandincreases 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
theSuperSubimposes.
For portability, the KF940 includes balance-optimized handles
andaheavyduty,casterpalletthatboltstoitsrear.
TheKF940isappropriateforanyapplicationrequiringextremely
high output levels of sub bass information. Relatively small
SuperSub™arrays have successfullyfilled the largeststadiums
andarenaswithhighimpact,sub bass information. Applications
include stadiums concert tours, nightclubs, raves, dance clubs,
housesofworship,corporateA/V,and theatres.
The KF940 is designed to be used with today's sophisticated
digitalsignalprocessingtooptimizetheLFresponse.EAW'sMX
Series processors are recommended for the required crossover
andequalization. SixYearWarranty.
DUAL 12 INCH HORN SUBWOOFER
See NOTES TABULAR DATA for details, half space = floor-mounted
CONFIGURATION
Subsystem Transducer Loading
SUB 2x12 in cone Horn-loaded
Operating Mode AmplifierChannels ExternalSignalProcessing
Single-amp LF1/LF2 DSPw/1-wayfilter
Dual-amp LF1,LF2 DSPw/1-wayfilter
PERFORMANCE 1
Operating Range 23Hz to 185 Hz
Nominal Beamwidth
Horz 360°
Vert 360°
Axial Sensitivity (SPL)
LF1/LF2(whole space) 106dB 22 Hzto 173 Hz
(halfspace) 116 dB 22Hz to 173Hz
4xKF940 (whole space) 110 dB 22Hz 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
HighPass =>24 Hz, 12 dB/octaveButterworth
Accelerated Life Test 2
System LF1/LF2 80V 1600W @ 4 ohm
LF1,LF2 80 V (each) 800W @ 8 ohm (each)
Transducer(AES) 1000 W (each)
CalculatedAxial Output Limit (SPL)
Average Peak
LF1/LF2(whole space)138dB 144 dB
(halfspace) 148 dB 154 dB
4xKF940 (whole space) 142dB 148 dB
ORDERING DATA
Description Part Number
KF940Dual 12 inch Subwoofer Black 510655
(CasterPallet included)
OptionalAccessories
None
1Toachieve specifiedperformance, thelisted externalsignal processing with EAW-provided settings is required.
2Forrecommendations toselect power amplifier size refer to : “HOWMUCHAMPLIFIERPOWER DOI NEED?”on theEAWweb site.
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