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

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INPUT PANEL

 

SB528zP

WHITINSVILLE, MA USA

S/N

 

 

 

 

 

 

 

 

 

 

LF1 LF2

-- + -- +

LOOP THRU

LF1 LF2

-- + -- +

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: RD0313 (A) SB528zP April 2005

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EAW SB528zP specifications Input Panel, Signal Diagram
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SB528zP specifications

The EAW SB528zP, a prominent offering from Eastern Acoustic Works, is known for its powerful performance and innovative design, making it a preferred choice for professional audio applications. This subwoofer is specifically engineered to deliver deep, impactful bass, catering to the needs of various live sound environments, including concerts, festivals, and theatrical events.

One of the main features of the SB528zP is its dual 18-inch woofers, which are optimized to provide exceptional low-frequency response. These high-efficiency drivers are designed to handle significant power, allowing the subwoofer to reproduce deep bass with clarity and punch. The SB528zP boasts a frequency response that extends down to 30 Hz, ensuring that it can reproduce the lowest notes in music and sound effects, creating a truly immersive experience for audiences.

The enclosures of the SB528zP are constructed from high-quality birch plywood, providing durability and strength while minimizing unwanted resonances. The design incorporates a bass-reflex port, which enhances efficiency and increases output levels. Additionally, the enclosure features rugged protective corners and a durable finish, making it ideal for the rigors of touring and live events.

In terms of technologies, the SB528zP incorporates advanced DSP (Digital Signal Processing) capabilities that allow for precise tuning and optimization of audio performance. This DSP technology enables users to easily configure the subwoofer to match the acoustics of different venues, ensuring consistent sound quality regardless of the environment. Furthermore, the subwoofer is compatible with various amplifiers, allowing for flexible setup options.

The SB528zP is also designed with ease of transport and setup in mind. It features integrated handles and a lightweight design, allowing for quick deployment in various settings. The subwoofer can be stacked for convenience, making it an efficient option for mobile applications.

Overall, the EAW SB528zP stands out for its exceptional sound quality, robust construction, and advanced technological features. It is an ideal choice for audio professionals seeking a powerful subwoofer that delivers outstanding performance in a wide range of applications, ensuring that every audience experiences the full impact of live sound. Whether used alone or as part of a larger sound system, the SB528zP excels in delivering an unforgettable sonic experience.
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