EAW Subwoofer KF920 User manual

SPECIFICATIONS KF920
PHYSICAL
One Main Street, Whitinsville, MA 01588 508 234 6158 Toll Free 800 992 5013 FAX [phone] [e-mail] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. KF920/888059(A)/2 pp 1/29/99 Printed in USA
DESCRIPTION
PERFORMANCE
APPLICATION
A dedicated PPST™ mid frequency system in a trapezoidal
enclosure. Includes 3x 10-in mid frequency cone drivers
mounted on separate SimplePhase™ horns.
The KF920 PPST™ LF module is engineered for use in KF900
Series arrays. KF900 Series modules can only be used in
arrays and must be integrated with complex PPST™ process-
ing. Six year warranty.
Applications include:
Stadiums Concert Tours
Frequency Response (1 Watt @ 1m)
±3 dB 100 Hz to 1270 Hz
-10 dB 73 Hz to 1400 Hz
Efficiency/Axial Sensitivity (dB SPL, 1 Watt @ 1m)
MF 112
Impedance (Ohm) MF 3x 8
Power Handling, AES Standard (Watts)
MF 3x 400
Recommended Amplifier Power (Watts)
MF 3x 800
Calculated Maximum Output Peak/Long Term (dB SPL)
MF Peak 148.0
MF Long Term 143.0
Nominal Coverage Angle/-6 dB points (degrees)
Horizontal 30
Vertical Beam profile adjustable via PPST
processing
Recommended Complementary Systems
Sub KF940
LF KF930
Mid/High KF920/KF910/KF911/KF913
Part Number 999524
MF Subsystem & Loading 3X 10-in horn-loaded cone
System Configuration Dedicated MF, long throw/down
fill
Powering Configuration Active processing
System Crossover 100 Hz (LF/MF), 800 Hz to 1300
Hz (MF/LF)
Controls (switches, knobs) Inner/outer column selector
Recommended High-Pass
Frequency (24 dB/Octave) 100 Hz
Cabinet Type (shape) Trapezoidal
Enclosure Materials Baltic birch plywood
Finish Black catalyzed polyurethane
Connectors One each male and female AP6
Suspension Hardware (16) 3/8”-16 threaded mount
ing/suspension points (4 each
top, bottom and sides)
Grille Vinyl coated perforated steel,
foam backed
Dimensions inches millimeters
Height 46.00 1168
Width (Front) 30.00 762
Width (Rear) 8.56 217
Depth 40.00 1016
Trapezoid Angle 15°per side
Weights pounds kilograms
Net Weight 308 140.1
Shipping Weight 316 143.8
Prototype shown with temporary hardware

SPECIFICATIONS KF920
DIMENSIONAL DRAWING
INPUT PLATE
A & E SPECIFICATIONS
One Main Street, Whitinsville, MA 01588 508 234 6158 Toll Free 800 992 5013 FAX [phone] [e-mail] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. KF920/888059(A)/2 pp 1/29/99 Printed in USA
Manufacturing tolerances are +/-0.13 and +/-1°
A
RIGHT (VIEW A-A)
A
22.00
6.44
10.81
BACK
TOP
7.00
4.88 4.50
23.00
46.00
40.00
30.00
10.75 17.75
42.00
FRONT
30°
8.56
20.00
KF920 ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED
CENTER OF BALANCE
510498 (1)
EXP 8/27/97 SHB
The dedicated mid frequency module shall incorporate 3x
horn-loaded 10-in MF transducers. The module shall have a
nominal horizontal coverage pattern of 30°. The module’s ver-
tical beam profile shall be adjustable via complex digital sig-
nal processing. The module shall be integrated with comple-
mentary frequency-specific modules into a single acoustical
unit via complex digital signal processing.
The module shall be equipped with a switch to control an
internal passive filter network providing processing appropri-
ate to the modules use in an inner or outer array column.
Module frequency response shall vary no more than ±3 dB
from 100 Hz to 1.27 kHz measured on axis. The module shall
produce a Sound Pressure Level (SPL) of 112 dB SPL on axis
at 1 meter with a power input of 1 Watt, and shall be capa-
ble of producing a peak output of 148 dB SPL on axis at 1
meter. Each driver shall handle 400 Watts of amplifier power
(AES Standard) and shall have a nominal impedance of 8
Ohms.
The loudspeaker enclosure shall be trapezoidal in shape. It
shall be constructed of 1/2-in thickness void-free cross-grain-
laminated Baltic birch plywood and shall employ extensive
internal bracing. It shall be finished in black catalyzed
polyurethane. Input connectors shall be one each male and
female AP6. The enclosure shall include sixteen 3/8”-16
threaded mounting/suspension points (4 each top, bottom
and sides). The front of the loudspeaker shall be covered with
a vinyl coated perforated steel grille backed with open cell
foam to protect against dust.
The long throw/downfill mid frequency module shall be the
EAW model KF920.
AP6-22 (M) AP6-21 (F)
KF920
S/N
CANNON
1
2
3
4
5
6
CANNON
1
2
3
4
56
PIN 1
PIN 2 MF A
MF A
...
... --
+ PIN 5
PIN 6 MF C
MF C
...
... --
+
PIN 3
PIN 4 MF B
MF B
...
... --
+