EAW KF730 User Manual

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] 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

KF730 Specifications group · S

FEATURES

•

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

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.

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.

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 Loading

LF 2x 10 in cone Phase Aligned™

MF 2x 7 in cone Horn-loaded

HF 2x 1 in exit, 1.75 in voice Horn-loaded

coil neodymium
compression driver

Operating Mode

Amplifier Channels External Signal Processing

Bi-amp LF, MF/HF DSP w/2-way filters

PERFORMANCE

1

Operating Range 80 Hz to 20 kHz
Nominal Beamwidth

Horz 110°

Vert 12°

Axial Sensitivity (whole space SPL)

MF/HF 105 dB 230 Hz to 20 kHz

LF 91 dB 80 Hz to 230 Hz

Peak Sensitivity (whole space SPL)

MF/HF 112 dB 20 Hz to 20 kHz

LF 92 dB 20 Hz to 20 kHz

Input Impedance (ohms)

Nominal Minimum

MF/HF 16 15.9 @ 680 Hz

LF 16 15.1 @ 250 Hz

Recommended High Pass Filter

High Pass =>80 Hz, 24 dB/octave

Accelerated Life Test

2

MF/HF 75 V 350 W @ 16 ohm

LF 106 V 700 W @ 16 ohm

Calculated Axial Output Limit (whole space SPL)

Average Peak

MF/HF 130 dB 136 dB

LF 119 dB 125 dB

ORDERING DATA

Description Part Number

KF730 line array loudspeaker 0006108

Optional Accessories

KF730/SB730 Fly-Bar 0006265
Fly-Bar Spare Connecting Pin - 2.5 inch 0006266
Spare Connecting Pin - 1.5 inch 0006122
KF730 Caster Pallet 0006385

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 [phone] fax [phone] www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0093 (C) KF730 August 2003

KF730 Specifications group · S

ENCLOSURE

Material Baltic birch plywood

Finish Wear resistant textured black paint

Grille Powder-coated perforated steel

A

NOTES:

1. SYMBOL INDICATES CENTER OF BALANCE.

KF730

2X 6.96

INPUT

ACCESS PANEL

L

C

4.00
L

C

ONE MAIN STREET

EASTERN ACOUSTIC WORKS

WHITINSVILLE,MA 01588 USA

REVISION:

SCALE: N/A

0006109

2X STACK PAD

2X 8.61

[MECHANICAL SPECIFICATION]

CABINET/FINISHED/BLACK/KF730

SHEET 1 OF 1

13.50

DOCUMENT CONTRO L PER SPECIFICATION 4.5. 201

BACK

TITLE:

DRAWING NUMBER:

3.00

2X HANDLE

7.50

DATE

PRODUCTION

9.60

APPROVALS

2X HANDLE

2. WEIGHT APPROX. 77 LBS.

3. SHIPPING WEIGHT APPROX. 85 LBS.

STATUS:

CHECKED:

DRAWN:

MFG ENG:

DES ENG:

2X STACK PAD POCKET TOP ONLY

2X STACK PAD BOTTOM ONLY

1.25

2X 12.00

C

28.50

17.54

RIGHT SIDE

8.76

4X EAW PROPIETARY

9.50

RIGGING SYSTEM

L

C

6.00

DIMENSIONS APPLY TO BOTH SIDES

X.XX ± 0.13

ANGLES ± 1°

(X.XX) = REF DIMS

TOLERANCE I N INCHES

ALL DIMENSIONS ARE IN INCHES

UNLESS OTHERWISE SPECIFIED:

TO BE SYMMETRICAL

NO TOLERANCE IMPLIED

DIMENSIONS ACROSS CENTERL INES

T.S.C. = THEORETICAL SHARP CORNER

L

TOP

TOP AND BOTTOM

2X 1.52

DIMENSIONS APPLY TO

FRONT

GRILLE PARTIALLY SHOWN

13.00

THIRD ANGLE PROJECTION

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.

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0093 (C) KF730 August 2003

KF730 Specifications group · S

PERFORMANCE DATA See NOTES GRAPHIC DATA Notes for details

Frequency Response: Processed Bi-amplified

LF = green MF/HF = orange Complete = blue

SPL (dB)

Frequency Response: Unprocessed

LF = green MF/HF = orange

SPL (dB)

Frequency Response: Digital Signal Processor

LF = green MF/HF = orange

dB re 0.775 V

Beamwidth (-6 dB SPL Points)

Horizontal = orange Vertical = black

Degrees

Impedance Magnitude

LF = green MF/HF = orange

Ohms

120

110

100

90

80

70

60

100

10

1

400

100

10

1

100 1000 20000

Frequency (Hz)

10 100 1000 20000

Frequency (Hz)

120

110

100

90

80

70

60

20

10

0

-10

-20

-30

-40

10 100 1000 20000

Frequency (Hz)

10 100 1000 20000

Frequency (Hz)

10 100 1000 20000

Frequency (Hz)

120

110

100

90

80

70

60

10 100 1000 20000

Frequency (Hz)

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0093 (C) KF730 August 2003

KF730 Specifications group · S

INPUT PANEL

WHITINSVILLE, MA USA

KF730

PIN 1--...LF-­PIN 1+...LF+
PIN 2--...MF/HF-­PIN 2+...MF/HF+

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 SPLas 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).

SIGNAL DIAGRAM

LEGEND

DSP: User-supplied Digital Signal Processor for EQ, crossover, and delay.
HPF: High Pass Filter for crossover or Recommended High Pass Filter.
LPF: Low Pass Filter for crossover.
LF/MF/HF: Low Frequency / Mid Frequency / High Frequency.
PWR AMP: User-supplied Power Amplifier.
XVR: Passive LPFs, HPFs, and EQ integral to the loudspeaker.

3-Way, Bi-Amp (LF, MF/HF)

DSP

EQ

DELAY

HPF/LPF

AMP

AMP

XVR

HF

MF

LF