may be biamplified. Twelve 3/8 inch x 16 threaded mounting suspension points (three each top and bottom and two each sides and back) allow a variety of suspension configurations. Multiple units may be mounted to form a vertical/horizontal array [see limitations under mounting instructions]. Both versions of the ILS 1564 are solidly constructed of 3/4 inch void free poplar plywood and finished with an exterior grade hardened black paint.

Frequency Response

This measurement is useful in determining how accurately a given unit reproduces an input signal. The frequency response of the ILS 1564 is measured at a distance of 1-meter using a 1 watt (into the nominal impedance) swept-sine input signal. As shown in Figure 1, the selected drivers in the ILS 1564 combine to give a smooth frequency response from 47 Hz - 18.5 kHz.

Directivity

Beamwidth is derived from the -6 dB points from the polar plots (see Figure

3)which are measured in a whole space anechoic environment. Q and Directivity Index are plotted for the on- axis measurement position. These are specifications that provide a reference to the coverage characteristics of the unit. These parameters provide insight for proper placement and installation in the chosen environment. The blending of the components of the ILS 1564 exhibit a desirable beamwidth and directivity (Figure 3 and 4) suitable for sound reinforcement applications.

Power Handling

There are many different approaches to power handling ratings. Peavey rates this loudspeaker system’s power handling using a full-range form of the AES Standard 2-1984. Using audio band 20 Hz to 20 kHz pink noise with peaks of four times the RMS level, this strenuous test signal assures the user that every portion of this system can withstand today’s high technology music. This rating is contingent upon having a minimum of 3 dB of amplifier headroom available.

Harmonic Distortion

Second and third harmonic distortions vs. frequency are plotted in Figures 5 and 6 for two power levels. Ten percent (10%) of rated input power and either one percent (1%) of rated input power or one watt, whichever is greater. Distortion is read from the graph as the difference between the fundamental signal (frequency response) and the desired harmonic. As an example, a distortion curve that is down 40 dB from the fundamental is equivalent to 1% distortion.

Mounting

CAUTION: Before attempting to suspend this speaker, consult a certified structural engineer. Speaker can fall from improper suspension, resulting in serious injury and property damage. Other enclosures may be suspended below one ILS 1564. However, the combined weight of additional enclosures and all cables, clamps and other hardware must not exceed 304 pounds. The ILS 1564 weighs 96 pounds and the maximum combined weight suspended from the uppermost mounting bracket

assemblies must not exceed 400 pounds. Maximum enclosure angle 45 degrees. Use only the correct mating hardware (forged shoulder machinery eye bolt, Mil Spec MIL51937-3). All associated rigging is the responsibility of others.

Architectural and Engineering Specifications

The loudspeaker system shall have an operating bandwidth of 47 Hz -

18.5kHz. The nominal output level shall be 95.0 dB when measured at a distance of one meter with an input of one watt. The nominal impedance shall be 8.0 ohms. The maximum continuous power handling shall be 750 watts, maximum program power of 1,500 watts and a peak power input of at least 3,000 watts, with a minimum amplifier headroom of 3 dB. The nominal radiation geometry shall be 70 degrees in the horizontal plane and 65 degrees in the vertical plane. The outside dimensions shall be

33.75inches high by 19.38 inches wide by 21.75 inches deep. The weight shall be 96 pounds. The loudspeaker system shall be an Architectural Acoustics model ILS 1564.

This product is manufactured under U.S. patents 6,059,069 and 6,064,745.

3 + 2 YEAR LIMITED WARRANTY NOTE: For details, refer to the warranty statement. Copies of

this statement may be obtained by contacting Peavey Electronics Corporation, P.O. Box Meridian, Mississippi 39301-2898.

Neutrik® and Speakon® are registered trademarks of Neutrik AG.

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Peavey 1564 specifications Frequency Response
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1564 specifications

The Peavey 1564 is a standout model in the realm of professional audio gear, revered for its versatility, performance, and robust features tailored for musicians, audio engineers, and sound professionals alike. This speaker cabinet is part of Peavey's renowned lineup, embodying the brand's commitment to innovation and quality.

One of the primary features of the Peavey 1564 is its powerful speaker configuration. Sporting dual 15-inch woofers, this cabinet delivers rich, deep bass tones that resonate well in larger venues. The design effectively allows for dynamic sound reproduction, making it an excellent choice for live performances and events. Coupled with a high-frequency driver, the 1564 ensures that treble sounds are crisp and clear, providing a balanced audio experience across the spectrum.

In addition to its speaker layout, the Peavey 1564 incorporates advanced technologies that enhance its performance. One such technology is Peavey's proprietary speaker design that promotes durability while ensuring efficient sound output. This makes the cabinet not only capable of withstanding the rigors of frequent transport but also able to deliver consistent sound quality over time.

Another notable characteristic of the 1564 is its user-friendly design. The cabinet includes built-in handles for easy transportation and rugged construction that ensures reliability on the road. The heavy-duty exterior further protects the internal components, allowing for worry-free usage in various environments.

Connectivity is a crucial aspect of any professional audio system, and the Peavey 1564 does not disappoint. It features multiple input connections, allowing for easy integration with various sound systems and setups. This flexibility makes it a popular choice among DJs, bands, and sound engineers who require adaptable equipment.

In summary, the Peavey 1564 stands out with its dual 15-inch woofers, high-frequency driver, and rugged construction, making it ideal for a range of audio applications. With built-in features designed to enhance portability and durability, along with robust sound performance technologies, the 1564 is a cabinet that delivers both in the studio and on the stage. Its ability to provide powerful, clear sound, combined with practical design considerations, makes it an invaluable asset for any audio professional looking to elevate their sound experience.
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