Electro-Voice SX80T specifications Description, Ring-Mode Decoupling RMD Technology

Sx80T

Two-Way Speaker System with Transformer

•8-inch woofer and DH2005 compres- sion driver for great sound and reliable performance

•Constant-directivity 90° x 65° high- frequency horn with VariPath™ geometry for uniform coverage

•Ring-Mode Decoupling (RMD™) for increased intelligibility

•60-watt transformer with selectable taps

•Molded-in attachment points allow for use with brackets

•Available in paintable black (Sx80TB) or white (Sx80TW)

Description

The Electro-Voice Sx80T is a compact, two- way, high-efficiency, constant-directivity speaker system for sound reinforcement and monitoring. The small size, high sensitivity and high power-handling capacity of the Sx80T make it an excellent choice for use in studios, clubs, bars, theaters or other applications. An internal, 60-watt line trans- former with selectable taps allows easy con- nection to 70-volt or 100-volt speaker lines in distributed systems.

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 Sx80T uti- lizes a molded-in 90° x 65° constant-direc- tivity horn. This unique pattern contributes to high intelligibility and aims the speakers output where it is most useful. Vocals sound natural yet "cut through" in reverberant, noisy rooms. In addition, the coverage pat- tern is unusually uniform over its range of operation. The horn's unique, VariPathTM throat geometry helps direct driver output to the corners of the room, to points of cover- age 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 Sx80T is the cabinet. Constructed of high- impact polystyrene it provides a stiff and extremely durable enclosure. The cabinet includes M6 threaded inserts for the optional Sx80MB U-bracket.

It also has inserts for installing with an OmniMount® Series 75 mounting system.

The Sx80T’s high-frequency horn is driven by the DH2005 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 20,000 Hz.

Aself-resetting high-frequency protection circuit, EV’s PRO™ circuit, is included with the Sx80T to prevent against accidental over- drive 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 low-frequency section of the Sx80T is a 203-mm (8-in.) direct radiating woofer in- stalled in an optimally-vented enclosure. This results in exceptionally extended bass response and high efficiency in a very small cabinet.

Ring-Mode Decoupling (RMD™ )

Technology

The Sx80T 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 resonating sources, leaving only the in- tended sound to be heard by the audience.

High-Frequency Protection Circuit

The Sx80T crossover includes the Electro- Voice automatically resetting PRO™ circuit for high-frequency driver protection. This circuit permits short-term transients to pass,