Electro-Voice Sx500+ - User Manual

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500+

400-Watt Two-Way

Speaker System

• Ring-Mode Decoupling (RMD

)

Technology for increased intelligibility

• Durable structural-foam enclosure with

integral handles and stand mount

• DL15Sx 15-inch woofer and DH2T

compression driver for great sound and

reliable performance

• Asymmetric constant-directivity

75° x 60° high-frequency horn

• Asymmetric horn-loaded woofer section

• 400-watt long-term rms power capacity

• Molded-in attachment points for secure

suspension with optional brackets

• Dual Neutrik Speakon

high-current

connectors

• Biampable, passive network with PRO™

circuit for high-frequency driver

protection

Description

The Electro-Voice Sx500+ is a 400-watt,

15-inch two-way, biampable, high-effi-

ciency, constant-directivity speaker system

featuring a vented-horn woofer section.

Through extensive use of computer-aided

design and modeling, Electro-Voice engi-

neers have developed a state-of-the-art pro-

fessional loudspeaker system.

The high-frequency section of the Sx500+

utilizes a molded-in 75° x 60° constant-di-

rectivity horn which is aimed downward by

10°. This unique pattern contributes to high

intelligibility and aims the speaker's output

where it is most useful. Vocals sound natu-

ral yet “cut through” in reverberant, noisy

rooms. In addition, the coverage pattern is

unusually uniform over its range of opera-

tion. The horn’s unique, VariPath

throat

geometry helps direct driver output to the

corners of the room, to points of coverage

not described in the usual specifications of

horizontal and vertical coverage angles, and

to parts of the audience that typically do not

receive the strongest coverage.

One of the many other unique features of the

Sx500+ is the cabinet. Constructed of high-

impact polypropylene structural foam, it pro-

vides a stiff and extremely durable enclosure.

The cabinet includes integral carrying

handles and a stand socket for mounting on

-inch stands such as the Electro-Voice

100BK. Rubber feet that are attached to the

bottom of the cabinet and mating sockets that

are molded into the top provide a means of

stacking systems. The shaped plastic cabi-

net, in combination with the uniform, 75° x

60° directivity characteristics, make the

Sx500+ ideal for use alone or in arrays.

The Sx500+’s high-frequency horn is driven

by the DH2T one-inch throat, wide-band-

width, titanium-diaphragm driver. This

driver uses a unique, convex-drive Time

Path

™

phasing plug structure (U.S. Patent

#4,525,604) for smooth and extended high-

frequency performance. The voice coil is

coupled to the diaphragm with EV’s exclu-

sive Resonant Drive™ Technology. This in-

creases and smooths the high-frequency re-

sponse and reduces the amount of internal

equalization required for flat frequency re-

sponse, which extends to 16,000 Hz.

A self-resetting high-frequency protection

circuit, EV’s PRO™ circuit, is included with

the Sx500+ to prevent against accidental

overdrive and improve system reliability. If

the input power to the high-frequency driver

exceeds the nominal rating, the protection

circuit is activated and reduces the power

delivered to the driver by 6 dB. The system

will remain in this mode of operation until

the input power is reduced to a safe level.

The bass section of the Sx500+ is a vented-

horn design using Thiele-Small parameters

for solid performance to 43 Hz. This horn

provides directivity control for the woofer

section and matches the asymmetry of the

high-frequency section. The 381-mm

(15-in.) DL15Sx woofer used is a specially

designed unit featuring an extended-length

voice coil and high-temperature construction

materials. The system combines profes-

sional-quality components, arranged in an

unusually durable Thiele-Small-aligned

vented enclosure. The result is clear and ar-

ticulate, high-quality sound.

Ring-Mode Decoupling (RMD

)

Technology

The Sx500+ controls both acoustical and me-

chanical ring modes to provide dramatically

increased intelligibility, using techniques

learned from the development of the Electro-

Voice X-Array™ concert speakers. There is

much less coloration of the sound from reso-

nating sources, leaving only the intended

sound to be heard by the audience. The most

obvious implementation of RMD™ on the

Sx500+ is the foam attached to the back of

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Summary

Product Description and Key Technologies

Product Description

Details the Electro-Voice Sx500+ as a 400-watt, 15-inch, two-way, biampable speaker system.

Ring-Mode Decoupling Technology

Explains RMDTM for enhanced intelligibility by controlling acoustical and mechanical ring modes.

Speaker System Features and Performance

Speaker Protection

Discusses methods to prevent unnecessary woofer cone excursion at high power levels.

Enclosure Construction

Describes the durable structural foam enclosure with integral features for mounting and stacking.

Power-Handling Capacity

Details the system's long-term (400W) and short-term (1600W) power handling capabilities.

Amplifier Power Recommendations

Provides guidelines for matching amplifier output ratings to the speaker's power capacity.

Installation and Usage Guidelines

Service Information

Outlines procedures for servicing the woofer and high-frequency driver.

Stand Mounting

Specifies requirements for stable and safe mounting on loudspeaker stands.

Suspending Speaker Enclosures

Provides warnings and methods for safely suspending the Sx500+ using specialized kits.

Comprehensive Specifications and Warranty

Technical Specifications Summary

Lists detailed technical parameters including frequency response, sensitivity, impedance, and dimensions.

Uniform Limited Warranty

Defines the warranty period, coverage, exclusions, and procedures for obtaining service.