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EVI Vari Intense
®
EVI-28
• Two-way, full-range loudspeaker
• Vented LF enclosure
•
1.25" voice coil (titanium diaphragm)
• PRO
TM
Driver protection circuit
• Time Path
TM
phasing plug
• Multi-angled housing
•
Stacked, fr
equency-shaded woofers maintain
vertical coverage angle down to 500 Hz with 120°
(typical 180°); ideal for reverberant rooms
• Five 3/8"-16 hanging points
Electr
o-Voice
®
’
s unique EVI Vari Intense
®
(VI) speakers ar
e
engineered to eliminate the need for additional long-throw
horns or delayed sources in many rooms. The EVI Vari
Intense
®
series provides an economical solution for permanent
installations that r
equire coverage over a rectangular area. In
a typical room, the distance from the loudspeaker to the last
row is two or more times that to the front row, resulting in a
substantial loss in level and intelligibility at the rear. The VI
hor
n delivers 6 to 8 dB more SPL to the back of the room,
over
coming the level loss without resorting to the expense
and complexity of additional speaker systems or components.
The pr
oblem is old; EV
®
’
s solution is new. EVI is perfect for
conference centers, houses of worship, halls, and other ven-
ues where evenly distributed SPL is essential. EVI systems are
made of 18 mm 13-ply birch plywood (EVI 28: 12 mm 9-ply),
textur
e-painted with a powder-coated metal grille.
A simple 3-2-1 rule-of-thumb applies for determining EVI
coverage patterns: The pattern’s width will equal twice the
height of the r
oom, and the pattern’s length will equal three
times the height. See the illustration below
.
Length = 3H
Length = 3H
Wid
th =
2
H
Wid
th =
2
H
H
H
EVI Vari Intense
®
coverage pattern (3-2-1 Rule):
If speaker height = H, then coverage length = 3H, coverage width = 2H, and first r
ow coverage = 1H