EAW SB528zR 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: RD0229 (A) SB528zR April 2005

SB528zR Specifications group · S

DESCRIPTION

The SB products are EAW's premium subwoofers designed for
the most demanding professional applications. Abroad range of
capabilities and sizes provide the designer with selections that
can be specifically matched to their application. Top quality
drivers, engineered by EAW , provide the highest output and best
sonic performance possible for a given form factor. All SB
models are direct radiating, with optimally tuned, vented
enclosures. SB subwoofers are the choice where the best sonic
performance, highest reliability, and most robust physical
construction are required.

The SB528zR is a high output, large-format subwoofer system.
This versatile, all-purpose subwoofer is designed for portable
use where the fatter-sounding output of dual 18 inch drivers is
desired. The SB528zR works well with most full-range
loudspeakers in a variety of applications including: band/club
P A, large houses of worship, large auditoriums/theaters, arenas,
concert touring, f/x reinforcement, large dance clubs, and drum­fill monitoring.

The SB528zR 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 18 INCH SUBWOOFER

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

CONFIGURA TION

Subsystem

Transducer Loading

SUB 2x 18 in cone Vented

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 27 Hz to 147 Hz
Nominal Beamwidth

Horz 360°

Vert 360°

Axial Sensitivity (SPL)

LF1/LF2 (whole space) 97 dB 27 Hz to 147 Hz

(half space) 103 dB 27 Hz to 147 Hz

Input Impedance (ohms)

Nominal Minimum

LF1/LF2 4 3.9 @ 131 Hz

LF1, LF2 8 (each) 7.8 @ 131 Hz (each)

Recommended High Pass Filter

High Pass =>25 Hz, 12 dB/octave Butterworth

Accelerated Life Test

2

System LF1/LF2 75 V 1400 W @ 4 ohm

LF1, LF2 75 V (each) 700 W @ 8 ohm (each)

Transducer (AES) 1000 W (each)

Calculated Axial Output Limit (SPL)

Average Peak

LF1/LF2 (whole space)129 dB 135 dB

(half space) 135 dB 141 dB

ORDERING DA T A

Description Part Number

SB528zR Dual 18 inch Subwoofer Black 997152
SB528zR Dual 18 inch Subwoofer White 997152-0000

Optional Accessories

Caster Kit (set of 4 blue swivel casters) 255027

1 To achieve specified performance, the listed external signal processing with EA W-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 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: RD0229 (A) SB528zR April 2005

SB528zR Specifications group · S

ENCLOSURE

Material Baltic birch plywood

Finish Wear resistant textured black paint

Grille Powder-coated perforated steel

NOTE: This drawing has been reduced. Do not scale.

3.53

[89.5]

6.63

[168.4]

L

C

INPUT

3.50

[88.9]

15.75

41.56

[1055.6]

[400.1]

EASTERN ACOUSTIC W ORKS

BACK

8X METAL CORNERS

24.56

[623.8]

SB528zR

2X 2.75

[2X 69.8]

2X 10.75

[2X 273.1]

3.00

[76.2]

4X OPTIONAL CASTER Ø 7.00 SWIVEL

L

C

6.03

[153.3]

L

C

2X 6.38

[2X 161.9]

20.37

[517.5]

17.62

[447.5]

4X HANDLE

RIGHT SIDE

DIMENSIONS APPLY

PRODUCTION

TO BOTH SIDES

L

C

50.69

[1287.5]

50.25

[1276.4]

FRONT

TOP/BOTTOM

GRILLE PARTIALLY SHOWN

29.75

30.19

[766.8]

[755.6]

10.50

1. SYMBOL INDICATES CENTER OF BALANCE.

2. WEIGHT APPROX. 215 lb [97.5 kg]

3. SHIPPING WEIGHT APPROX. 242 lb [109.8 kg]

NOTES:

[266.7]

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: RD0229 (A) SB528zR April 2005

SB528zR Specifications group · S

PERFORMANCE DA T A

See NOTES GRAPHIC DAT Afor details

Frequency Response: Processed

LF1/2 Whole Space = green

SPL(dB)

Frequency Response: Unprocessed

LF1/2 Whole Space = green

SPL(dB)

Frequency Response: Digital Signal Processor

LF = green

dB re 0.775 V

Impedance Magnitude

LF1/2 = green LF1 or LF 2 = orange

Ohms

120

110

100

90

80

70

60

100

10

1

10 100 1000 20000

Frequency (Hz)

10

0

-10

-20

-30

-40

-50

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)

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: RD0229 (A) SB528zR April 2005

SB528zR Specifications group · S

INPUT P ANEL

NL4 MPR

NL4 MPR

NOTES

TABULAR DA T A

1. Measurement/Data Processing Systems: Primary -FChart: proprietary EAW software; Secondary - Brüel & Kjær 2012.

2. Microphone Systems: Earthworks M30; Brüel & Kjær 4133

3. Measurements: Dual channel FFT; length: 32 768 samples; sample rate: 48 kHz; logarithmic sine wave sweep.

4. 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 +/-0.5°, resolution 0.5°.

5. Environment: Measurements time-widowed and processed to eliminate room effects, approximating an anechoic environment. Data processed as anechoic or fractional space, as noted.

6. Measurement Distance: 7.46 m. Acoustic responses represent complex summation of the subsystems at 20 m. SPLis referenced to other distances using the Inverse Square Law.

7. Volts: Measured rms value of the test signal.

8. Watts: Per audio industry practice, “loudspeaker watts” are calculated as voltage squared divided by rated nominal impedance. Thus, these are not T rue Watt units of energy as defined by

International Standard.

9. SPL: (Sound Pressure Level) Equivalent to the average level of a signal referenced to 0 dB SPL= 20 microPascals.

10. Subsystem: This lists the transducer(s) and their acoustic loading for each passband. Sub = Subwoofer, LF = Low Frequency , MF = Mid Frequency , HF = High Frequency .

11. Operating Mode: User selectable configurations. Between system elements, a comma (,) = separate amplifier channels; a slash (/) = single amplifier channel. DSP= Digital Signal Processor.

IMPORTANT: T o achieve the specified performance, the listed external signal processing must be used with EA W-provided settings.

12. Operating Range: Range where the processed Frequency Response stays within -10 dB SPLof the power averaged SPL within this range; measured on the geometric axis. Narrow band
dips are excepted.

13. Nominal Beamwidth: Design angle for the -6 dB SPLpoints, referenced to 0 dB SPLas the highest level.

14. 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.

15. 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.

16. High Pass Filter: This helps protect the loudspeaker from excessive input signal levels at frequencies below the Operating Range.

17. Accelerated Life T est: System: Maximum test input voltage applied with an EIA-426B defined spectrum; measured with specified signal processing; Transducer: AES2-1984 R 1997.

18. Calculated Axial Output Limit: Highest average and peak SPLs possible during the Accelerated Life T est. The Peak SPLrepresents the 2:1 (6 dB) crest factor of the Life T est signal.

GRAPHIC DAT A

1. Resolution:To remove insignificant fine details, 1/12 octave cepstral smoothing was applied to acoustic frequency responses and 1/3 octave cep stral smoothing was applied to the

beamwidth and impedance data. Other graphs are plotted using raw data.

2. Frequency Responses:Variation in acoustic output level with frequency for a constant input signal. Processed: normalized to 0 dB SPL. Unprocessed inputs: 2 V (4 ohm nominal impedance),

2.83 V (8 ohm nominal impedance), or 4 V (16 ohm nominal impedance) referenced to a distance of 1 m.

3. Processor Response:The variation in output level with frequency for a constant input signal of 0.775 V = 0 dB reference.

4. 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 Watt s (see 8 above).

SIGNAL DIAGRAM

LEGEND

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

WHITINSVILLE, MA USA

LIECHTENSTEIN

NL4 MPR

SB528zR

S/N

LIECHTENSTEIN

NL4 MPR

PIN 1--...LF1-­PIN 1+...LF1+
PIN 2--...LF2-­PIN 2+...LF2+

1-Way, Single-Amp (LF1/LF2)

DSP

EQ
HPF
LPF

1-Way, Dual-Amp (LF1, LF2)

DSP

EQ

HPF

LPF

AMP

AMP

AMP

LF

LF

LF

LF