EVI-15
Full-Range Loudspeaker
• Ground-breaking advance in single-
box utility
• New small-format Vari Intense®
6
horn
• 1-inch exit titanium compression
driver
• 15-inch cast-frame woofer
• 1,000-watt peak, 250-watt long-term
power capacity
• Terminal strip inputs for secure lead
connections
• Compact, lightweight, refinishable,
easy-to-install enclosure
• Available in white or black finish
• Three-point hanging system with
optional U-bracket
made by large screw terminals able to accept
up to 12-gauge wire, mounted to an input
panel on the back of the enclosure. The
system is provided with a 2,000-Hz pas-
sive crossover featuring self-setting
tweeter protection and asymetric acous-
tic slopes with passive lobe steering for
uniform coverage throughout the cross-
over region. The enclosure is constructed
from 19-mm (0.75-in.) thick, thoroughly
braced 7-ply birch plywood lined with sound-
absorbent glass wool. Five 3/8-16 shoulder-
bolt hanging points are provided for safe sus-
pension of the EVI-15. There are two hang-
ing options recommended. The optional U-
Bracket hanging kit, MB-EVI15 is available
for use with the 3/8-16 T-nut locations on the
side of the enclosure along with a single pull-
up strap located on the lower back of the en-
closure. The second option is available us-
ing the two T-nut locations on the front top
of the enclosure as well as the pull-up loca-
tion on the lower back of the enclosure. The
EBK-1 kit of three forged shoulder eyebolts
is available if structurally rated 3/8-16
eyebolts are not locally available. The sys-
tem may then be hung individually or in an
array. Please read the included Applica-
tions Guide for more information on
mounting methods and installation tac-
tics. The system may be ordered in a tex-
tured black or white paint which can be
painted to complement any interior. The grille
is constructed from a sturdy 16-gauge me-
dium-gloss black or white powder-coated steel
and may be painted or covered with cloth to
match the enclosure.
The EVI-15 full-range Vari Intense® loud-
speaker is the ideal system whenever high-
output full-frequency-range material must be
reproduced in churches, gymnasiums,
auditoriums, hotels and civic centers.
Description
The Electro-Voice EVI-15 full-range loud-
speaker is a factory assembled system featur-
ing a small-format Vari Intense® horn and a
15-inch direct radiator in a vented enclosure.
The EVI-15 is intended to be used as a stand-
alone full-range system, but may also be used
as the mid-bass/high-frequency component in
most multi-way loudspeaker systems.
The EVI-15 consists of a proprietary cast-
frame 381-mm (15-in.) high-power, long-
excursion low-frequency driver mounted
within a vented chamber of 3.4 cubic feet,
optimally tuned to provide unequalized low-
frequency response to below 50 Hz. The
high-frequency complement consists of a
25.4-mm (1.0-in.) exit compression driver
utilizing a new small-format Vari Intense®
horn. Vari Intense® is a revolutionary pat-
ented6 technology that throws a 6-to 10-dB
hotter signal to the back of the room. This
compensates for the drop in SPL over the
longer distance to the back of the room
(25 feet for the short throw and about 70 feet
for the long throw in a typical room). This
single horn replaces a short-throw/long-
throw horn combination, reducing the ma-
terial and labor costs of an installation.
Electrical connections to the system are
1
Architects' and Engineers'
Specifications
The loudspeaker system shall be of the full-
range type consisting of a single 381-mm
(15-in.) cast-frame high-power woofer in a
vented enclosure and a 25.4 mm (1-in.) exit
compression driver loaded with a small-for-
mat Vari Intense® horn. The loudspeaker sys-
tem shall meet the following performance
criteria. Power handling shall be 250 watts
of pink noise with a 6-dB crest factor for eight
hours, band limited from 50 Hz to 20 kHz.3
Frequency response shall be smooth and
uniformly usable from 50 Hz to 20 kHz.
Pressure sensitivity shall be 100 dB SPL
when measured at one meter on axis with
one watt of band-limited pink noise from
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EVI-15 Full-Range Loudspeaker
Figure 2—EVI-15 Impedance
Figure 3—EVI-15 Distortion 1% power
Figure 4—EVI-15 Distortion 10%
power
3
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EVI-15 Full-Range Loudspeaker
This system side view provides a means of
Figure 5—EVI-15 Polar Response
orientation for the vertical polar data. Hori-
zontal data (short throw) is presented con-
ventionally. Please reference the Applica-
tions Guide for more information on inter-
preting the polar data.
90º
Scale: 5 dB/division
Horizontal
60º
Vertical
30º
0º
4
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EVI-15 Full-Range Loudspeaker
Figure 6—EVI-15 Beamwidth -
Long Throw
- Horizontal
- Vertical
Figure 7—EVI-15 Beamwidth -
Short Throw
- Horizontal
- Vertical
Figure 8—EVI-15 Directivity
Figure 9—EVI-15 Dimensions
5
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EVI-15 Full-Range Loudspeaker
Short Throw:
Horizontal, 600 Hz-20 kHz:
110° (+25°, -25°)
Vertical, 600 Hz-20 kHz:
90° (+25°, -18°)
Directivity Factor, Rθ (Q), 1.2-20 kHz:
14.0 (+5.5, -4.0)
Directivity Index, Di, 1.2-20 kHz
12.5 dB (+1.2 dB, -2.7 dB)
Components:
High-efficiency, high-power cast-
frame 381-mm (15-inch) woofer with
one 25.4-mm (1.0-inch) exit com-
pression driver mounted to a small-
format Vari Intense® horn
Input Terminals:
Large screw terminals
Replacement LF:
1815-0992
Replacement HF:
833-0990
Replacement Grille:
73574 black
73753 white
Enclosure:
Specifications:
Direct-radiating vented LF, built of
19-mm (0.75-inch), 7-ply birch
plywood with appropriate bracing,
lined with glass wool; five 3/8-16
shoulder bolt hanging points included
Dimensions:
584 mm (23.0 in.) high
429 mm (16.9 in.) wide
766 mm (30.2 in.) deep
Net Weight:
24.0 kg (53 lb)
Shipping Weight:
28.2 kg (62 lb)
Finish:
Black or white textured paint with
black or white 16-gauge powder-coated
grille
Accessories:
Electro-Voice MB-EVI15 U-Bracket
suspension kit
Versions Available:
EVI-15 black
EVI-15 white
System Type:
Direct-radiating vented-bass full-
range loudspeaker system
Pressure Sensitivity: 1
100 dB SPL
Frequency Response (see Figure 1): 2
50 Hz - 20 kHz
Power Handling: 3
250 watts, long-term continuous
1,000 watts, peak power
Maximum Output: 4
123 dB SPL, long-term continuous
128 dB SPL, peak power
Impedance (see Figure 2):
8.0 ohms nominal
5.9 ohms minimum (15.8 kHz)
Beamwidth,
Long Throw:
Electro-Voice EBK-1 Eyebolt suspen-
sion kit
Horizontal, 1-20 kHz:
60° (+30°, -2°)
Vertical, 1-20 kHz:
70° (+30°-10°)
3. This system rating is patterned after the
ANSI/EIA RS-426-A method where the test
signal is pink noise with a 6-dB crest factor
over the bandwidth of the system, with
power calculated using E2/RE x 1.15, for 8
hours.
5. The distortion at any given frequency
may be found by graphically taking the dif-
ference between the fundamental and har-
monic, and adding the number of decibels
which the harmonic has been raised on the
graph and apply the formula: percent dis-
Notes on Measurement Conditions
1. Band-limited pink noise signal, one watt
calculated using E2/Zmin, 3.16-meter measure-
ment distance referred to one meter.
2. On-axis, one watt calculated using E2/Zmin
,
(-difference in dB/20)
tortion = 100 x 10
3.16-meter measurement distance referred to
one meter, low frequencies corrected for
anechoic-chamber error.
4. This measurement made under the same
conditions as pressure sensitivity, and takes
into account any power-compression effects
due to nonlinearities in the system.
6. The use of Vari Intense® horns is protected
by U.S. patent # 5,020,630.
600 Cecil Street, Buchanan, MI 49107
616/695-6831, 616/695-1304 Fax
©Telex Communications, Inc., 1998 • Litho in U.S.A.
Part Number 534764-EXP.— 9820
6
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