S B 5 2 8 z R S p e c i f i c a t i o n s

group · S

INPUT PANEL

SB528zR

S/N

WHITINSVILLE, MA USA

LIECHTENSTEINLIECHTENSTEIN

PIN 1--...LF1--

PIN 1+...LF1+

PIN 2--...LF2--

PIN 2+...LF2+

NL4 MPR

NL4 MPR

SIGNAL DIAGRAM

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

 

DSP

 

LF

EQ

AMP

 

HPF

 

LPF

 

LF

 

 

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

 

DSP

AMP

LF

EQ

 

 

HPF

 

 

LPF

AMP

LF

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.

NOTES

TABULAR DATA

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 True 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: To achieve the specified performance, the listed external signal processing must be used with EAW-provided settings.

12.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.

13.Nominal Beamwidth: Design angle for the -6 dB SPL points, referenced to 0 dB SPL as 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 Test: 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 Test. The Peak SPL represents the 2:1 (6 dB) crest factor of the Life Test signal.

GRAPHIC DATA

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

2.83V (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 Watts (see 8 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: RD0229 (A) SB528zR April 2005

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EAW SB528zR specifications Input Panel, Signal Diagram
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SB528zR specifications

The EAW SB528zR is an advanced subwoofer specifically designed for professional audio applications, delivering exceptional performance and versatility. Built for concert venues, theaters, and events requiring high-quality sound reinforcement, the SB528zR stands out with its innovative technologies and robust construction.

One of the main features of the SB528zR is its dual 18-inch high-excursion woofers. These woofers are engineered to provide deep, powerful bass frequencies, capable of handling high sound pressure levels without distortion. They are coupled with a high-performance crossover system that optimizes the subwoofer's response across the low-frequency spectrum, ensuring clarity and precision even at loud volumes.

The enclosure of the SB528zR is constructed from high-grade plywood, which contributes to its durability and resonance control. The cabinet is designed to minimize unwanted vibrations, resulting in a cleaner sound output. Additionally, it features a front-loaded design that allows for phase coherence, providing a tighter and more coherent response that is crucial for live sound applications.

Incorporating modern technologies, the EAW SB528zR utilizes advanced DSP (Digital Signal Processing) to enhance its audio performance. This includes adjustable parameters for tuning the subwoofer to various acoustic environments, allowing sound engineers to easily optimize the output based on the specific requirements of a venue. The subwoofer is also capable of being integrated into larger systems, thanks to its compatibility with EAW's comprehensive line array solutions.

Furthermore, the SB528zR is equipped with a Neutrik Speakon input, ensuring secure connections and reducing the risk of signal loss. The subwoofer’s industrial-grade hardware ensures reliability and longevity, which is critical for rental companies and touring professionals who rely on dependable equipment during performances.

Overall, the EAW SB528zR subwoofer represents the pinnacle of audio engineering, offering exceptional power, precision, and adaptability for a variety of sound reinforcement applications. With its combination of high-quality components, innovative technology, and solid construction, it is an excellent choice for any audio professional seeking to deliver an outstanding listening experience. Whether for live music events, corporate functions, or theatrical productions, the SB528zR is poised to meet the most demanding audio challenges with ease.
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