Electro-Voice S-60 - System Description and Operation; Constant-Directivity Technology; Power Handling Capacity; Suspension and Mounting

Power
IMPEDANCE
Tap
100-volt 70-volt
60 W
167 0
83 O
30 W
333 0 167 0
15 W
667 0
333 0
75 W 1.350 O
667 0
3 8 W 2.700 O 1,350 O
1.9 W 5,400 O
2,700 O
TABLE 1
1. OmniMounr* is a registereo trademark o1 OmniMount"
Systems, Ire
Net Weight,
S-60;
7.0 kg (15.4 lb)
S-60T:
8.4 kg (18.4 lb)
Shipping Weight,
S-60:
9.5 kg (20.9 lb)
S-GOT:
10.9 kg (23.9 lb)
DESCRIPTION
The Electro-Voice S-60/S-60T are compact,
two-way, constant-directivity speaker systems
for sound reinforcement and monitoring. The
small size, high sensitivity and high power-
handling capacityof the S-60/S-60T make them
an excellent choice for use in studios, clubs,
bars, theaters or other applications. The combi¬
nation of optimal crossover frequency and high-
frequency, dispersion-controlling Direktor ™ en¬
sures uniform audience coverage throughout,
eliminating the problems of “hot spots'' and
"dead zones" that might occur at certain fre¬
quencies with other two-way speaker systems.
The low-frequency section is a 16.5-cm (6.5-
in.) direct-radiating woofer installed in an opti¬
mally vented enclosure. This results in excep¬
tionally extended bass response and high effi¬
ciency in a very small cabinet.
Both drivers feature low-leakage magnet de¬
signs, and the woofer is also screened to permit
use close to video monitors. For very critical
video-monitoring applications, a minimum dis¬
tance of approximately 10 cm (4 in.) is recom¬
mended between the edge of the loudspeaker
and the edge of the CRT
The enclosure is constructed from high-impact
ABS plastic which has been specially treated to
allow the enclosure to be painted using com¬
monly available finishes The system can be
mounted using OmniMounF' Series 75 mount¬
ing hardware or the EV S-60MB mounting
bracket.
CONSTANT-DIRECTIVITY
SPEAKER SYSTEM
The crossover frequency and speaker-
component geometries have been carefully
selected so that the directional characteristics
of the woofer and Direktor'" match at the cross¬
over frequency (approximately 120 degrees
circular coverage patterns for each) to create a
special system type—the constant-directivity
system. At higher frequencies, the horizontal
and vertical coverage pattern remains essen¬
tially constant. Response within the 120° x 120°
rated coverage angle is uniform, which means
dependable audience coverage without “hot
spots” or “dead zones” at certain frequencies.
The 120° X 120° dispersion characteristic per¬
mits this small system to be used either hori¬
zontally or vertically, allowing greater flexibility
in setup or installation. The controlled directiv¬
ity of the high- and low-frequency transducers
also eliminates response irregularities caused
by diffraction off enclosure edges. This, com¬
bined with an essentially flat on-axis response,
produces a total acoustic power output that is
uniform with frequency.
FREQUENCY RESPONSE
The S-60/S-60T’s axial frequency response
was measured in Electro-Voice's large anechoic
chamber at a distance of 10 feet with a swept
sine-wave input of four volts. No additional
equalization was used Figure 1 has bean aver¬
aged and corrected for 1 watt at 1 meter.
DIRECTIVITY
The directional characteristics of the S-60/
S-60T were measured in Electro-Voice's large
anechoic chamber. The test signal was one-
third-octave filtered pink noise at the frequen¬
cies indicated. A full spherical measurement
system was used, which is compatible with the
AcoustaCADD'“ computer-aided design pro¬
gram. All directional information was measured
at 20 feet.
Figure 2 illustrates the horizontal and vertical
polar responses.
Figure 3 shows the horizontal and vertical
beamwidths. Beamwidth is the angle at which
the horizontal and vertical polar responses
have decreased in level by 6 dB when com¬
pared to the axial frequency response
Figure 4 illustrates the total directivity of the
S-60/S-60T, The directivity index, D, is calcu¬
lated using the formula D = 10 log R„.
POWER-HANDLING CAPACITY
Eleciro-Voice components and systems are
manufactured to exacting standards to ensure
reliability in continuous use in arduous real-life
conditions. Besides utilizing industry-standard
power tests, extreme in-house power tests
which push the performance boundaries of the
loudspeakers are also performed lor an extra
measure of reliability. The S-60/S-60T are rated
as per Ihe ANSI/EIA426-A Loudspeaker Power
Rating. Full Range Test, which uses a shaped-
random-noise signal to simulate typical music
to test ttie mechanical and thermal capabilities
of Ihe loudspeakers. Specifically, the S-60/S-
60T passes Ihe ANSI/EIA 426-A power lesi
with Ihe following lest parameters;
: 400 watts total
Test Voltages 21.7 volts rms
43.4 volts peak
Rjn (1.15 X R,): 4.7 ohms
SUSPENDING THE S-60/S-60T
The S-60/S-60T is fitted with six M6 threaded
inserts and can be suspended as follows:
1. S-60MB IS a universal U-bracket designed
to allow the suspension of the S-60 at any
angle and orientation from the wall or ceil¬
ing (see Figure 9). Full instructions are
included with Ihe S-60MB.
2. OmniMounf Series 75 support system.
Four M6 threaded inserts are located in the
rear panel to allow use of the OmniMounf
Series 75 support system. M6 hardware is
provided A safety chain should be used to
ensure safe operation. Full instructions can
be obtained from:
OmniMounf Systems. Inc.
1501 W. 17th St.
Temps, AZ 85281
Tel: 602/829-8000
Fax: 602/756-9000
WARNING: IT IS THE RESPONSIBILITY OF
THE INSTALLER TO ENSURE THAT THE
MOUNTING SURFACE HAS SUFFICIENT RI¬
GIDITY TO SUPPORT THE S-60 AND THAT
THE MOUNTING BRACKET IS CORRECTLY
FITTEDTOTHE SURFACE ANDTOTHES-60.
TRANSFORMER SETTINGS (S-60T)
A transformer and power selector switch are
installed in the rear of the enclosure. The level
of Ihe S-60T may be adjusted by changing the
switch setting using a screwdriver. Clockwise
increase the power. Since the same switch and
transformer are used for either the 100-volt or
70-volt line, the power setting depends upon
the amplifier output that is used. 100-volt or 70-
volt.
CAUTION: When connected to a 100-volt line,
do not use the switch setting marked “DO NOT
USE," as this may result in excessive power
driving the S-60T. or excessive distortion
CONSTRUCTION
The enclosure is constructed from injection-
molded ABS plastic. The S-60/S-60T is sup¬
plied in an all-black or all-white finish and can be
painted if required.
Both the baffle board and the enclosure have
been specially treated to enhance the adhesion
of paints. The S-60 has been tested with sev¬
eral commercially available paints with suc¬
cess Electro-Voice cannot, however, guaran¬
tee that all commercially available paints will be
satisfactory. It is. therefore, recommended that
a small area should be tested with the paint in
order to ensure that there are no adverse
effects and that Ihe paint has sufficient adhe¬
sion.