Description
The Electro-Voice SL10-2V is a 15
O
slanted
baffle two-way, high-efficiency speaker
system. Its primary intended application
is for high-quality surround sound in small
and medium premium cinema installations.
It has been designed for high-power digi-
tal surround sound requirements usig
high-quality, professional-level compo-
nents such as a high-frequency 100
O
x 90
O
horn/driver and 10-inch woofer. the sleek
black-vinyl enclosure with a black cloth
grille attached with four screws has been
to blend into most interior design con-
cepts. A third-order (18-db-per-octave)
crossover at 1,500 Hz is used to combine
the two frequency sections and provide
the system equilization while achieving the
best directivity response both on and off
axis .
Frequency Response
The SL10-2V axial frequency response was
measured in Electro-Voice's large anechoic
chamber at a distance of 10 feet with a
swept sine-wave input , corrected to 1watt
1meter (see Figure 4). The responses
shows the ISO 2969 treble rolloff.
Directivity
The directional characteristics of the SL10-
2V wawe measured in Electro-Voice's large
anechoic chamber. The test signal was one-
third-octave pink noise at the frequencies
indicated. A full spherical measurement
system was used. All directional informa-
tion was measured at 20 feet. Figure 8 il-
lustrates the horizontal and vertical polar
responses. Figure 6 shows the horizontal
and vertical bandwidths. Beamwidth is the
angle at which the horizontal and vertical
polar respnses have decrease in level by
6dB when compared with the axial fre-
quency respnose.
Figure 7 illustrates the total directivity of
the SL10-2V. The directivity factor R
q
(Q) is
the relative value, at a point, of an ideal
spherical response. The directivity index,
D
i
= 10log
10
R
q.
Power Handling
Electro-Voice components and systems are
manufactured to exacting standards, en-
suring they will hold up, not only through
______________________
1 THX
®
is a registered trademark of Lucasfilm Ltd.
SL10-2V
Two-Way Slant Cinema
Surround Speaker
System
High ouput--complements
the potential digital sound
sources
Verstile suspension and
safety options
ISO 2969 treble roll-off
15
O
Slanted profile for
greater directivity
10-inch woofer
100
o
x 90
o
horn and High
efficiency driver
THX
®1
Approved
the most rigorous of power tests, but also
through continued use in arduous, real-
life conditions. The EIA Loudspecker
Power Rating Full Range (EIA RS-426-A
1980) uses a noise spectrum which mimics
typical music and test the thermal and
machanical capabilities of the components.
Electro-Voice will support relevant addi-
tional standards as and when they become
available. Extreme, in-house power test,
which push the performance boundaries
of the system, are also performed and
passed to ensure years of trouble-free ser-
vice.
Specifically, the SL10-2V passes EIA RS-
426-A 1980 with the following values.
R
SR
= (1.15 x R
E
ohms) , R
E
= 7.8 ohms
P
E(MAX)
=120 watts
Test voltage = square root of PE
(MAX)
x R
SR
= 32.4 volts rms.
= 64.8 volts peak
The "peak power-handling capacity of a
woofer is deterimined by the peak test volt-
age amount. For the SL10-2V, a 64.8-volt
peak test voltage translates into an 480-
watt short-term-peak power-handling ca-
pacity. This is the equivalent of four times
the "average" power-handling capacity,
Ρ
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