EAW KF940 User Manual

Eastern Acoustic Works One Main S treet Whitinsville, MA01588 tel [phone] fax [phone] 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
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 Y ear Warranty .

DUAL 12 INCH HORN SUBWOOFER

See NOTES T ABULAR DATAfor details, half space = floor-mounted

CONFIGURA TION

Subsystem

Transducer Loading

SUB 2x 12 in cone Horn-loaded

Operating Mode

Amplifier Channels External Signal Processing

Single-amp LF1/ LF2 DSPw/1-way filter

Dual-amp LF1, LF2 DSPw/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)1 10 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 DA T A

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.

(shown without grille)

Eastern Acoustic Works One Main S treet Whitinsville, MA01588 tel [phone] fax [phone] 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

ENCLOSURE

Material Baltic birch plywood

Finish Wear resistant textured black paint

Grille Powder-coated perforated steel

NOTES: This drawing has been reduced. Do not scale.
For WPversion, add 0.25 in / 6.4 mm to the outside dimensions = 0.125 in / 3.2 mm all around.

[492.3]

1.56

[39.6]

L

29.00

36.00

[736.6]

[914.4]

2X 21.06

[2X 535.0]

4X LARGE

(HANDLE)

HANDLES

19.38

[492.3]

HIDDEN BY

CASTER

C

PALLET

2X 19.38

L

C

[635.0]

2X 25.00

5.63

[143.0]

INPUT

7.38

[187.5]

BACK

2X 7.19

[2X 182.6]

32.00

EASTERN ACOUSTIC WORKS

(HANDLE)

PRODUCTION

HANDLES

2X LARGE

58.25

52.00

[1320.8]

[1479.5]

2.10

[53.3]

L

C

11.56

3/8-16 THREADED HOLE. (FOR CASTER PALLET)

1. SYMBOL INDICATES NON-LOAD BEARING MOUNTING POINT,

2. SYMBOL INDICATES CENTER OF BALANCE.

3. WEIGHT APPROX. 376.00 lb [169.2 kg]

NOTES:

4X SMALL HANDLES

32.75

[831.9]

4. SHIPPING WEIGHT APPROX. 411.00 lb [185.0 kg]

6.37

[161.9]

4X 8.75

[4X 222.3]

[293.7]

2X GRILLE

PARTIALLY

SHOWN

4X 25.78

[4X 654.8]

6X 10.81

[6X 274.6] [812.8]

6X 6.44

[6X 163.5]

RIGHT SIDE

FRONT

TOP

ACCESS PANEL

DIMENSIONS APPLY

TO TOP AND BOTTOM

4X 6.44

[4X 163.5]

4X CASTER

13.75

[349.3]

Ø 7.00 [177.8] SWIVEL

L

C

LEFT SIDE

KF940