Electro Voice Speaker EVI 15 User Manual

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  
 
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
 
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
 
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
 
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  
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