Electro-Voice SL12-2H Datasheet
SL12-2H
High-Output, Two-Way
Slant Cinema Surround
Speaker System
• High output—complements the
potential of digital sound sources
• 93-dB sensitivity
• 200 watts long-term power
capacity
• Easy suspension using the
optional quick-mount U-bracket
• ISO 2969 treble roll-off (switchable)
• Slanted profile for greater directivity
• 12-inch woofer
• 100° x 50° horn and driver
Description
The Electro-Voice SL12-2H is a 20º slanted
baffle two-way , high-efficiency speaker system. Its primary intended application is for
high-quality surround sound in medium and
large premium cinema installations. It has
been designed for high-power digital surround sound requirements using high-quality, professional-level components such as a
high-frequency 100º x 50º horn/driver and a
12-inch woofer. The sleek black-vinyl enclosure with a black cloth grille attached with
four screws has been selected to blend into
most interior design concepts.
A second-order (12-dB-per-octave) crossover at 2,700 Hz is used to separate the two
frequency sections and provide equalization
for the HF driver. The bass section was designed for efficient low-end performance in
a compact slant-designed enclosure.
Frequency Response
The SL12-2H axial frequency response was
measured in Electro-Voice's large anechoic
chamber at a distance of 10 feet with a swept
sine-wave input (see Figure 1). The two responses ISO 2969 and "flat" are illustrated.
Directivity
The directional characteristics of the
SL12-2H were measured in Electro-Voice's
large anechoic chamber. The test signal was
one-third-octave filtered pink noise at the
frequencies indicated. A full spherical
measurement system was used. 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 compared with the axial frequency response.
Figure 4 illustrates the total directivity of the
SL12-2H. The directivity factor R
relative value, at a point, of the SL12-2H
output when compared to an ideal spherical
response. The directivity index, D
lated by D
Power-Handling Test
Electro-Voice components and systems are
manufactured to exacting standards, ensuring they will hold up, not only through the
most rigorous of power tests, but also
= 10log10Rθ.
i
(Q) is the
θ
, is calcu-
i
through continued use in arduous, real-life
conditions. The EIA Loudspeaker Power
Rating Full Range (EIA RS-426-A 1980)
uses a noise spectrum which mimics typical
music and tests the thermal and mechanical
capabilities of the components. Electro-V oice
will support relevant additional standards as
and when they become available. Extreme,
in-house power tests, which push the performance boundaries of the system, are also
performed and passed to ensure years of
trouble-free service.
Specifically, the SL12-2H passes EIA
RS-426-A 1980 with the following values:
R
= 6.8 (1.15 x RE ohms
SR
P
= 200 watts
E(MAX)
Test voltage = 36.9 volts rms.
73.8 volts peak
The "peak" power-handling capacity of a
woofer is determined by the peak test voltage amount. For the SL12-2H, a 73.8-volt
peak test voltage translates into an 800-watt
short-term-peak power-handling capacity.
This is the equivalent of four times the "average" power-handling capacity, and is a
peak that can be sustained for only a few
milliseconds. However, this sort of short
duration peak is very typical in speech and
SL12-2H High-Output, Two- Way Slant Cinema Surround Speaker System
music. Provided the amplifier can reproduce
the signal accurately, without clipping, the
system will also perform accurately and reliably, even at these levels.
Use in Cinemas
The SL12-2H has features which make it
particularly suitable for use as cinema surround sound, a black vinyl appearance to
complement most theater interiors. The
SL12-MB universal U-bracket provides a
cost-effective and safe method of suspending the SL12-2H. The high dynamics and
high power handling offered by professionalgrade components make it especially suitable
for digital surround sound. The SL12-2H is
currently pending THX
Suspending the SL12-2H
The SL12-2H is fitted with 1/4-20 threaded
inserts and can be suspended in two ways
using the SL12-MB, a universal U-bracket
designed specifically for the SL12-2H. The
SL12-2H can mounted on the wall or, for
increased isolation can be hung from the ceiling. The SL12-2H can be locked at angles
of 0º, +10º, +20º (see bracket EDS for more
information)
It is the responsibility of the installer to
ensure the integrity of the mounting surface. The grille of the SL12-2H is securely
SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
attached on the front of the cabinet with four
screws.
Architects' and Engineers'
Specifications
The loudspeaker system shall be a two-way,
20º slanted baffle design, full-range system
consisting of a 12-inch woofer, a 100º x 50º
horn and compression driver, using a passive crossover network installed in a black
vinyl-clad V-folded particle board enclosure
with a black cloth grille.
The system shall have a crossover point of
2,700 Hz and have a nominal impedance of
8 ohms. Usable frequency range shall extend
from 48-20,000 Hz. Sensitivity shall be at
least 93 dB for a 1 watt input at a distance of
1 meter on axis. Long-term power capacity
®1
approval.
shall be at least 200 watts, based on ANSI/
EIA RS-426-A 1980 standard for full-range
loudspeaker systems.
A shorting jumper shall be present to allow
the ISO 2969 or "flat" response to be selected. The input panel will be located on
the top surface. (See Figure 6.)
Input connections shall be #10 screw terminals on a barrier strip. Suspension of the system shall be achieved through the use of the
SL12-MB U-bracket (for ceiling or wall suspension), three 1/4-20 threaded inserts are
located on the side panels of the speaker
enclosure to accommodate the SL12-MB
bracket.
Overall dimensions shall be no greater than
381 mm (15.05 in.) high by 622.3 mm (24.5 in.)
wide and a maximum depth of 326 mm
(12.85 in.)
Net weight shall be 21.3 kg (47 lb). The system shall be the Electro-Voice SL12-2H.
Uniform Limited Warranty
Electro-Voice products are guaranteed
against malfunction due to defects in materials or workmanship for a specified period,
as noted in the individual product-line
statement(s) below, or in the individual product data sheet or owner’s manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified period, the product will be repaired or replaced
(at our option) without charge. The product
will be returned to the customer prepaid.
Exclusions and Limitations: The Limited
W arranty does not apply to: (a) exterior finish or appearance; (b) certain specific items
described in the individual product-line
statement(s) below, or in the individual product data sheet or owner’s manual; (c) malfunction resulting from use or operation of
the product other than as specified in the
product data sheet or owner’s manual; (d)
malfunction resulting from misuse or abuse
of the product; or (e) malfunction occurring
at any time after repairs have been made to
the product by anyone other than EVI Audio Service or any of its authorized service
representatives. Obtaining Warranty Ser-
vice: To obtain warranty service, a customer
must deliver the product, prepaid, to EVI
Audio Service or any of its authorized service representatives together with proof of
purchase of the product in the form of a bill
of sale or receipted invoice. A list of authorized service representatives is available from
EVI Audio Service at 600 Cecil Street,
Buchanan, MI 49107 (800/234/6831 or F AX
616/695/4743). Incidental and Conse-
quential Damages Excluded: Product repair or replacement and return to the customer are the only remedies provided to the
customer. Electro-Voice shall not be liable
for any incidental or consequential damages
including, without limitation, injury to persons or property or loss of use. Some states
do not allow the exclusion or limitation of
incidental or consequential damages so the
above limitation or exclusion may not apply
to you. Other Rights: This warranty gives
you specific legal rights, and you may also
have other rights which vary from state to
state.
Electro-V oice Speakers and Speaker Systems are guaranteed against malfunction due
to defects in materials or workmanship for a
period of five (5) years from the date of original purchase. The Limited W arranty does not
apply to burned voice coils or malfunctions
such as cone and/or coil damage resulting
from improperly designed enclosures. Electro-Voice active electronics associated with
the speaker systems are guaranteed for three
(3) years from the date of original purchase.
Additional details are included in the Uniform Limited Warranty statement.
For warranty repair, service information, or
a listing of the repair facilities nearest you,
contact the service repair department at: 616/
695-6831 or 800/685-2606.
For technical assistance, contact Technical
Support at 800/234-6831 or 616/695-6831,
M-F, 8:00 a.m. to 5:00 p.m. Eastern Standard time.
Specifications subject to change without notice.
_________
1. THX is a registered trademark of Lucasfilm Ltd.
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