EAW SB730 Specifications

K F 7 3 0 S p e c i f i c a t i o n s group · S

FEATURES

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Highest output to size ratio for small format line arrays

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Large MF/HF horn and Phase Aligned™ LF drivers for exceptional 110° horizontal pattern to 160 Hz

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KF730 Wizard auto-designs flown arrays

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Integral lightweight fly hardware of 6061-T6 structural aluminum

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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.

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.

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

Operating Mode

Transducer

LF 2x 10 in cone

Loading

Phase Aligned™

MF 2x 7 in cone Horn-loaded

HF 2x 1 in exit, 1.75 in voice Horn-loaded coil neodymium compression driver

External Signal Processing

DSP w/2-way filters

Operating Range

Nominal Beamwidth

Amplifier Channels

Bi-amp LF, MF/HF

PERFORMANCE 1

80 Hz to 20 kHz

Horz 110°

Vert 12°

Axial Sensitivity (whole space SPL)

MF/HF 105 dB

LF 91 dB

230 Hz to 20 kHz

80 Hz to 230 Hz

Peak Sensitivity (whole space SPL)

MF/HF 112 dB

LF 92 dB

Input Impedance (ohms)

Nominal

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

MF/HF 130 dB

LF 119 dB

ORDERING DATA

Description

KF730 line array loudspeaker

Optional Accessories

KF730/SB730 Fly-Bar

Fly-Bar Spare Connecting Pin - 2.5 inch

Spare Connecting Pin - 1.5 inch

KF730 Caster Pallet

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

Part Number

0006108

0006265

0006266

0006122

0006385

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

K F 7 3 0 S p e c i f i c a t i o n s

ENCLOSURE

Material Baltic birch plywood

Finish Wear resistant textured black paint

Grille Powder-coated perforated steel group · S

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 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

LF = green MF/HF = orange Complete = blue

120

110

100

90

80

70

60

10 100 1000 20000

Frequency (Hz)

Frequency Response: Unprocessed

LF = green MF/HF = orange

120

110

100

90

80

70

60

10 100 1000 20000

Frequency (Hz)

Impedance Magnitude

LF = green MF/HF = orange

100 group · S

120

110

100

90

80

70

60

10 100 1000 20000

Frequency (Hz)

Frequency Response: Digital Signal Processor

LF = green MF/HF = orange

20

10

0

-10

-20

-30

-40

10 100 1000 20000

Frequency (Hz)

Beamwidth (-6 dB SPL Points)

Horizontal = orange Vertical = black

400

100

10

10

1

10 100 1000 20000

Frequency (Hz)

1

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 S p e c i f i c a t i o n s

INPUT PANEL

WHITINSVILLE, MA USA

SIGNAL DIAGRAM

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

DSP

EQ

DELAY

HPF/LPF

AMP

AMP

PIN 1--...LF--

PIN 1+...LF+

PIN 2--...MF/HF--

PIN 2+...MF/HF+

group · S

XVR

HF

MF

LF

LEGEND

DSP:

HPF:

LPF:

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.

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.

S/N

KF730

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