Electro-Voice SX300PI Brochure & Specs

Description
The Sx300PI and Sx300PIX are continua-
tions of the popular the Sx-series offering
the added value of weather-resistant cabi-
nets. The Electro-Voice Sx300PI is a 300-watt,
12-inch, two-way, high-efficiency, constant-
directivity speaker system for permanent in-
stallation. Through the extensive use of
computer-aided design and modeling,
Electro-Voice engineers have developed
a state-of-the-art professional loudspeaker
system for permanent installation where
weather resistance is needed. The
Sx300PIX is the same as the Sx300PI with
the addition of an AT100 transformer.
The high-frequency section of the Sx300PI
utilizes a molded-in, 65° x 65° constant-di-
rectivity horn. This unique pattern contrib-
utes to high intelligibility. Vocals sound
natural, yet "cut through" in reverberant,
noisy rooms. In addition, the coverage pat-
tern is unusually uniform over its range of
operation. Sound quality off axis is very
consistent, even at 45° off axis (a 90° total
coverage angle), well beyond the rated cov-
erage angle. The horn's unique, Varipath
throat geometry* helps direct driver output
to the corners of the room, points of cover-
age not described in the usual specifications
of horizontal and vertical coverage angles,
and parts of the audience that typically do
* Patent pending
not receive the strongest coverage.
One of the many other unique features of the
Sx300PI is the cabinet. Constructed of high-
impact polypropylene structural foam, it pro-
vides a stiff and extremely durable enclosure.
Molded into the cabinet are an integral carry-
ing handle and a stand socket for mounting
on 1 3 / -inch stands such as the Electro-Voice
8
100BK. Rubber feet attached to the bottom of
the cabinet and mating sockets molded into
the top provide a means of stacking systems.
The trapezoidal-shaped cabinet in combina-
tion with the uniform, 65° x 65° directivity
characteristics, make the Sx300PI ideal for use
alone or in arrays.
The Sx300PI's high-frequency horn is driven
by the Electro-Voice DH2010A one-inch-
throat, wide bandwidth, titanium-diaphragm
driver. The DH2010A uses a unique, convex-
TM
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-
TM
sive Resonant Drive
creases and smooths the high-frequency re-
sponse and reduces the amount of internal
TM
equalization required for flat frequency re-
sponse. Driver output extends to 25,000 Hz.
A self-resetting, high-frequency protection cir-
cuit, EV's PRO TM circuit, is included with the
Sx300PI to prevent accidental overdrive and
improve system reliability. If the input power
S x 00PI
S x 00PIX
300-Watt Two-Way
Weather-Resistant
Speaker Systems
• Ring-Mode Decoupling (RMD
increased intelligibility
• Lightweight Structural-foam enclosure
• Stand mountable and arrayable
• High efficiency (99 dB, 1 W/1 m)
• High power handling (Sx300PI: 300-watts
continuous, 1,200-watts short term)
• Powder-coated, full-face stainless-steel
grill with foam backing
• Four molded-in attachment points (metric
M8 x 1.25) for secure suspension
• 100-watt transformer option (Sx300PIX)
• Available in white
to the high-frequency driver exceeds the nomi-
nal 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 Sx300PI is designed
using Thiele-Small parameters for efficient
performance to below 80 Hz. The woofer is a
DL12Sx 12-inch unit featuring beryllium cop-
per lead wires, a low-mass, edge-wound voice
coil and high-temperature materials. The part
of the magnetic structure adjacent to the coil
is insulated using the exclusive EV PROTEF
process (U.S. Patent #4,547,632). The sys-
tem combines professional-quality compo-
nents, arranged in a time-coherent vertical ar-
ray, with an unusually durable Thiele-Small-
aligned vented enclosure. The result is clear
and articulate, high-quality sound.
Ring-Mode Decoupling (RMD
The Sx300PI controls both acoustical and
technology. This in-
mechanical ring modes to provide dramati-
cally increased intelligibility, using tech-
niques 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
intended sound to be heard by the audience.
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