K F 7 3 0
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S p e c i f i c a t i o n s
3-WAY FULL-RANGE BI-AMP (passive MF/HF filter)
Performance is for a single KF730. Array performance is determined using the KF730 Wizard.
See TABULAR DATA notes for details
CONFIGURATION
Subsystem
Transducer
LF 2x 10 in cone
MF 2x 7 in cone
HF 2x 1 in exit, 1.75 in voice
coil neodymium
compression driver
Loading
Phase Aligned™
Horn-loaded
Horn-loaded
Operating Mode
Amplifier Channels
Bi-amp LF, MF/HF
PERFORMANCE 1
Operating Range
80 Hz to 20 kHz
Nominal Beamwidth
Horz 110°
Vert 12°
Axial Sensitivity (whole space SPL)
MF/HF 105 dB
LF 91 dB
Peak Sensitivity (whole space SPL)
MF/HF 112 dB
LF 92 dB
Input Impedance (ohms)
FEATURES
Nominal
• Highest output to size ratio for small format line arrays
• Large MF/HF horn and Phase Aligned™ LF drivers for
exceptional 110° horizontal pattern to 160 Hz
• KF730 Wizard auto-designs flown arrays
• Integral lightweight fly hardware of 6061-T6 structural aluminum
• 16 ohm inputs allow powering 8 KF730s with 2 amplifier channels
MF/HF 16
LF 16
Recommended High Pass Filter
High Pass =>80 Hz, 24 dB/octave
Accelerated Life Test 2
MF/HF 75 V
LF 106 V
Calculated Axial Output Limit (whole space SPL)
Average
DESCRIPTION
The KF730 Series is a compact line array system that sets a
performance benchmark above similar systems. It delivers
3-way, KF Series performance in a flexible, easy-to-use system
that can deliver concert-level output in an exceptionally wide
range of venues. The KF730 is an excellent compact line array
solution for applications such as houses of worship, corporate
A/V, theatres, hotel ballrooms, and concert halls. The system is
also ideal for supplemental coverage for larger line arrays, such
as the KF760 Series. Such uses include audience side fill, stage
lip fill, delayed arrays for balconies, and stage/performer
coverage.
MF/HF 130 dB
LF 119 dB
External Signal Processing
DSP w/2-way filters
230 Hz to 20 kHz
80 Hz to 230 Hz
20 Hz to 20 kHz
20 Hz to 20 kHz
Minimum
15.9 @ 680 Hz
15.1 @ 250 Hz
350 W @ 16 ohm
700 W @ 16 ohm
Peak
136 dB
125 dB
ORDERING DATA
Description
Part Number
KF730 line array loudspeaker
0006108
Optional Accessories
KF730/SB730 Fly-Bar
Fly-Bar Spare Connecting Pin - 2.5 inch
Spare Connecting Pin - 1.5 inch
KF730 Caster Pallet
0006265
0006266
0006122
0006385
One large MF/HF horn fills the entire face of the enclosure,
better maintaining horizontal pattern control throughout the
MF/HF passband. The curved aperture MF loading slots
effectively move the MF acoustic origin further into the horn than
physical space permits. The side-mounted LF drivers provide a
forward-firing, figure eight type pattern. The drivers are spaced
so that the LF beamwidth matches the MF through crossover.
The KF730s are sized to truck-pack friendly dimensions. The
rigging system is fully compatible with the companion SB730
subwoofer.
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.
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: RD0093 (C) KF730 SPEC
August 2003
13.00
2X 12.00
TOP
EAW products are continually improved. All specifications are therefore subject to change without notice.
RIGHT SIDE
2X HANDLE
9.60
7.50
Part Number: RD0093 (C) KF730
DIMENSIONS ACROSS CENTERLINES
TO BE SYMMETRICAL
MFG ENG:
DES ENG:
CHECKED:
(X.XX) = REF DIMS
NO TOLERANCE IMPLIED
T.S.C. = THEORETICAL SHARP CORNER
DRAWN:
TOLERANCE IN INCHES
X.XX ± 0.13
ANGLES ± 1°
UNLESS OTHERWISE SPECIFIED:
ALL DIMENSIONS ARE IN INCHES
STATUS:
DATE
PRODUCTION
APPROVALS
3.00
REVISION:
SCALE: N/A
0006109
SHEET 1 OF 1
CABINET/FINISHED/BLACK/KF730
[MECHANICAL SPECIFICATION]
ONE MAIN STREET
WHITINSVILLE, MA 01588 USA
EASTERN ACOUSTIC WORKS
DOCUMENT CONTROL PER SPECIFICATION 4.5.201
DRAWING NUMBER:
TITLE:
A
2X 6.96
C
L 4.00
2X 8.61
2X STACK PAD
BACK
13.50
ACCESS PANEL
C
L
INPUT
KF730
2X HANDLE
DIMENSIONS APPLY TO BOTH SIDES
6.00
C
L
8.76
RIGGING SYSTEM
4X EAW PROPIETARY
9.50
17.54
NOTES:
1. SYMBOL
INDICATES CENTER OF BALANCE.
2. WEIGHT APPROX. 77 LBS.
3. SHIPPING WEIGHT APPROX. 85 LBS.
S p e c i f i c a t i o n s
THIS DRAWING IS THE IS THE PROPERTY
OF EAW AND SHALL NOT BE COPIED,
REPRODUCED, OR USED AS THE BASIS
FOR MANUFACTURE OR SALE OF
APPARATUS WITHOUT WRITTEN
AUTHORIZATION.
DO NOT SCALE DRAWING.
THIRD ANGLE PROJECTION
FRONT
GRILLE PARTIALLY SHOWN
DIMENSIONS APPLY TO
TOP AND BOTTOM
2X 1.52
28.50
C
L
2X STACK PAD POCKET TOP ONLY
2X STACK PAD BOTTOM ONLY 1.25
K F 7 3 0
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ENCLOSURE
Material Baltic birch plywood
Finish Wear resistant textured black paint
Grille Powder-coated perforated steel
Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel 800 992 5013 / 508 234 6158 fax 508 234 8251 www.eaw.com
August 2003
K F 7 3 0
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S p e c i f i c a t i o n s
PERFORMANCE DATA
See NOTES GRAPHIC DATA Notes for details
Frequency Response: Processed Bi-amplified
SPL (dB)
LF = green
MF/HF = orange
Complete = blue
120
120
110
110
100
100
90
90
80
80
70
70
60
10
100
1000
60
20000
10
100
1000
20000
Frequency (Hz)
Frequency Response: Unprocessed
Frequency Response: Digital Signal Processor
LF = green
LF = green
MF/HF = orange
120
20
110
10
100
0
dB re 0.775 V
SPL (dB)
Frequency (Hz)
90
80
70
60
MF/HF = orange
-10
-20
-30
10
100
1000
-40
20000
10
Frequency (Hz)
100
1000
20000
Frequency (Hz)
Impedance Magnitude
Beamwidth (-6 dB SPL Points)
LF = green
100
Horizontal = orange
400
MF/HF = orange
Vertical = black
Degrees
Ohms
100
10
10
1
1
10
100
1000
20000
Frequency (Hz)
100
1000
20000
Frequency (Hz)
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: RD0093 (C) KF730
August 2003
K F 7 3 0
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S p e c i f i c a t i o n s
INPUT PANEL
SIGNAL DIAGRAM
3-Way, Bi-Amp (LF, MF/HF)
WHITINSVILLE, MA USA
DSP
EQ
DELAY
HPF/LPF
PIN
PIN
PIN
PIN
AMP
XVR
AMP
HF
MF
LF
1--...LF-1+...LF+
2--...MF/HF-2+...MF/HF+
LEGEND
DSP:
HPF:
LPF:
LF/MF/HF:
PWR AMP:
XVR:
User-supplied Digital Signal Processor for EQ, crossover, and delay.
High Pass Filter for crossover or Recommended High Pass Filter.
Low Pass Filter for crossover.
Low Frequency / Mid Frequency / High Frequency.
User-supplied Power Amplifier.
Passive LPFs, HPFs, and EQ integral to the loudspeaker.
KF730
S/N
NOTES
TABULAR DATA
1. Primary Measurement/Data Processing System: FChart: proprietary EAW software.
2. Secondary Measurement System: Brüel & Kjær 2012.
3. Microphone Systems: Earthworks M30; Brüel & Kjær 4133
4. Measurements: Dual channel FFT; length: 32 768 samples; sample rate: 48 kHz; logarithmic sine wave sweep.
5. Measurement System Qualification (includes all uncertainties): SPL: accuracy +/-0.2 dB @ 1 kHz, precision +/-0.5 dB 20 Hz to 20 kHz, resolution 0.05 dB; Frequency: accuracy +/-1 %,
precision +/-0.1 Hz, resolution the larger of 1.5 Hz or 1/48 octave; Time: accuracy +/-10.4 µs, precision +/-0.5 µs, resolution 10.4 µs; Angular: accuracy +/-1°, precision +/-1°, resolution 1°.
6. Environment: Measurements time-windowed and processed to eliminate room effects, approximating an anechoic environment. Data processed as anechoic or fractional space, as noted.
7. Measurement Distance: 7.6 to 8.0 m. Data is referenced to other distances using the Inverse Square Law.
8. Volts: Measured rms value of the test signal.
9. Watts: Per audio industry practice, “loudspeaker watts” are calculated as voltage squared divided by rated nominal impedance. Thus, these are not True Watt units of energy as defined by
International Standard.
10. SPL: (Sound Pressure Level) Equivalent to the average level of a signal referenced to 0 dB SPL = 20 microPascals.
11. Subsystem: This lists the transducer(s) and their acoustic loading for each passband. Sub Bass = Subwoofer, LF = Low Frequency, MF = Mid Frequency, HF = High Frequency.
12. Operating Mode: User selectable configurations. Between system elements, a comma (,) = separate amplifier channels; a slash (/) = single amplifier channel. DSP = Digital Signal Processor.
IMPORTANT: To achieve the specified performance, the listed external signal processing must be used with EAW-provided settings.
13. Operating Range: Range where the processed Frequency Response stays within -10 dB SPL of the power averaged SPL within this range; measured on the geometric axis. Narrow band
dips are excepted.
14. Nominal Beamwidth: Design angle for the -6 dB SPL points, referenced to 0 dB SPL as the highest level.
15. Axial Sensitivity: Power averaged SPL over the Operating Range with an input voltage that would produce 1 W at the nominal impedance; measured with no external processing on the
geometric axis, referenced to 1 m.
16. Peak Sensitivity: Highest axial SPL measured within the 20 Hz to 20 kHz bandpass with an input voltage that would produce 1 W at the nominal impedance; measured with no external
processing on the geometric axis, referenced to 1 m.
17. Nominal Impedance: Selected 4, 8, or 16 ohm resistance such that the minimum impedance point is no more than 20% below this resistance over the Operating Range.
18. Accelerated Life Test: Maximum test input voltage applied with an EIA-426B defined spectrum; measured with recommended signal processing and Recommended Protection Filter.
19. Calculated Axial Output Limit: Highest average and peak SPLs possible during the Accelerated Life Test. The Peak SPL represents the 2:1 (6 dB) crest factor of the Life Test signal.
20. Recommended High Pass Filter: This should be used to help protect the loudspeaker from excessive input signal levels below the Operating Range.
GRAPHIC DATA
1. Resolution: To remove insignificant fine details, 1/12 octave cepstral smoothing was applied to acoustic frequency response and 1/3 octave cepstral smoothing was applied to the
beamwidth and impedance data. Other graphs are plotted using raw data.
2. Frequency Responses: The variation in acoustic output level with frequency for a constant input signal of 2 volts (4 ohm nominal impedance), 2.83 volts (8 ohm nominal impedance),
or 4 volts (16 ohm nominal impedance) referenced to a distance of 1 m. For processed systems, this applies where the processor gain is 0 dB in the Processor Frequency Response graph.
3. Processor Response: The variation in output level with frequency for a constant input signal of 0.775 V = 0 dB reference.
4. Beamwidth: Average angle for each 1/3 octave frequency band where, starting from the rear of the loudspeaker, the output first reaches -6 dB SPL referenced to 0 dB SPL as the highest
level. This method means the output may drop below -6 dB SPL within the beamwidth angle. Referenced to 20 m.
5. Impedance: Variation in impedance magnitude, in ohms, with frequency without regard to voltage/current phase. This means the impedance values may not
be used to calculate True Watts (see 9 above).
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: RD0093 (C) KF730
August 2003