Input Panel Signal Diagram | EAW SB120zP guide

S B 1 2 0 z P S p e c i f i c a t i o n s

group · I

INPUT PANEL

SIGNAL DIAGRAM

		1-Way, Single-Amp (LF)
	SB120zP
WHITINSVILLE, MA USA	S/N		DSP
			EQ	AMP	LF
			HPF	AMP	LF
			HPF
			LPF
LOOP THRU		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: RD0307 (A) SB120zP April 2005

SB120zP specifications

The EAW SB120zP speaker is a powerful and versatile addition to any professional audio setup, designed primarily for live sound reinforcement and installations. This high-performance subwoofer is engineered to deliver impressive low-frequency output, making it ideal for a wide range of applications, from concerts and festivals to various commercial venues.

One of the standout features of the SB120zP is its robust construction. Built with durable materials, it offers both longevity and the ability to withstand the rigors of touring. The cabinet is designed to minimize acoustic coloration, ensuring a clean and accurate sound reproduction. It is finished with a rugged textured coating that can resist wear and tear while maintaining its sleek appearance.

At the heart of the SB120zP is its 12-inch cone driver, optimized for superior bass response. This driver is capable of handling high power, allowing it to produce deep and punchy low frequencies that can fill any space. The subwoofer is designed to work seamlessly with EAW's range of tops and full-range speakers, providing a cohesive sound experience where every element of the audio spectrum is defined.

The SB120zP features advanced technologies that enhance its performance. It includes a custom-designed low-frequency enclosure that maximizes output and extends the frequency response. The dual port design ensures efficient airflow, which minimizes distortion while maximizing sound clarity at all volumes.

Additionally, the SB120zP is equipped with versatile connectivity options, allowing it to integrate easily into any sound system. It supports both passive and active crossover configurations, giving users flexibility in how they implement the system. The built-in handles facilitate easy transport and rigging, making it suitable for both permanent installations and mobile setups.

Overall, the EAW SB120zP subwoofer combines rugged durability with exceptional sound quality, making it a reliable choice for audio professionals. Whether in a venue or on the road, this subwoofer promises to deliver the low-end power and precision needed to elevate any performance. Its blend of design, technology, and practicality sets it apart in the competitive landscape of professional audio equipment.