Electro-Voice SL12-2V EDS User Manual

SL12-2V

High-Output, Two-Way
Slant Cinema Surround
Speaker System

• High output--complements the
potential digital sound sources

• Versatile suspension and safety
options

• ISO 2969 treble roll-off

(switchable)

• 15° Slanted profile for greater
directivity

• 12-inch woofer

• 100° x 90° horn and HF compression
driver

• THX®1 Approved

Description

The Electro-Voice SL12-2V is a 15°
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 100° x
90° horn/driver and 12-inch woofer. The
sleek black-vinyl enclosure with a black
cloth grille attached with four screws has
been to blend into most interior design
concepts. A third-order (18-db-per-oc­tave) crossover at 1,600 Hz is used to com­bine the two frequency sections and pro­vide the system equalization while achiev­ing the best directivity response both on
and off axis.

Frequency Response

The SL12-2V axial frequency response was
measured in Electro-Voice's large anechoic
chamber at a distance of 10 feet with a swept

______________________
1 THX® is a registered trademark of Lucasfilm Ltd.

slanted

sine-wave input , corrected to 1 watt 1 Meter
(see Figure 4). The two responses, ISO 2969
and "flat" are illustrated.

Directivity

The directional characteristics of the SL12­2V wawe measured in Electro-Voice's large
anechoic chamber. The test signal was one­third-octave pink noise at the frequencies
indicated. A full spherical measurement
system was used. All directional informa­tion was measured at 20 feet. Figure 8 il­lustrates 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 responses have decrease in level by
6dB when compared with the axial fre­quency response.

Figure 7 illustrates the total directivity of
the SL12-2V. The directivity factor R
the relative value, at a point, of an ideal
spherical response. The directivity index,
D

= 10log10R

i

Power Handling

Electro-Voice components and systems are
manufactured to exacting standards, en­suring they will hold up, not only through

q.

(Q) is

q

the most rigorous of power tests, but also
through continued use in arduous, real­life conditions. The EIA Loudspeaker
Power Rating Full Range (EIA RS-426-A

1980) uses a noise spectrum which mimics

typical music and test the thermal and me­chanical capabilities of the components.
Electro-Voice will support relevant addi­tional 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
service.

Specifically, the SL12-2V passes EIA RS­426-A 1980 with the following values.

R

= (1.15 x RE ohms) , RE = 7.1 ohms

SR

=200 watts

P

E(MAX)

Test voltage = square root of PE

= 40.4 volts rms.
= 80.8 volts peak
The "peak power-handling capacity of a

woofer is determined by the peak test volt­age amount. For the SL12-2V, a 80.8-volt
peak test voltage translates into an 800­watt short-term-peak power-handling ca­pacity. This is the equivalent of four times
the "average" power-handling capacity,

(MAX)

x R

SR

SL12-2V High-Output, Two-W ay Slant Surround Speaker System

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 music. Provided the amplifier
can reproduce the signal accurately, with­out clipping, the system will also perform
accurately and reliability, even at these
levels.

Use in Cinemas

The SL12-2V has features which make it
particularly suitable for use as a cinema
surround sound, a black vinyl appearance
to complement most theaters interiors. The
high dynamics and power handling offered
by professional-grade components make
it especially suitable for digital surround
sound. The SL12-2V is THX

®1

approved.

Suspending the SL12-2V

The SL12-2V was designed to be mounted
in a variety of ways using a variety of
mounts. There are three 5/16-18 diameter
holes left and right for horizontal or verti­cal mounting using ALLEN PRODUCTS
COMPANY INC. (2-1100C Bracket) and
four rear 1/4-20 mounting holes using
ALLEN PRODUCTS COMPANY INC.
(MultiMount
equipped to accommodate Acoustic

SL12-2V High-Output, Two-Way Slant Cinema Surround Speaker System

Sound Products, Isolation mounts. As well

TM

-24) The SL12-2V is also

as two support points for added securely.

Architects' and Engineers'
Specifications

The loudspeaker system shall be a two­way, 15°

slanted baffle design, full-range
system consisting of a 12-inch woofer, a
100° x 90° 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 1,600 Hz and have a nominal impedance
of 8 ohms. Usable frequency range ex­tended from 60 - 20,000 Hz. Sensitivity shall
be an average of 93dB for a 1 watt input at
a distance of 1 meter on axis. Long term
power capacity shall be at least 200 watts,
based on ANSI/EIA RS-426-A 1980 stan­dard for full-range loudspeaker systems.

2

Input connections shall be #10 screw ter­minals on a barrier strip. 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 2)

Suspension of the system shall be achieved
through the use of ALLEN PRODUCTS
COMP ANY INC. (2-1100C Bracket) for hori­zontal mounting, or ALLEN PRODUCTS
COMPANY INC. (MultiMount

TM

-24) for

rear mounting options.
Overall dimensions shall be no greater than

(53.52 cm) 21.07 inches high by (47.63 cm)

18.75 inches wide and a maximum depth of
(33.5 cm) 13.2 inches

Net weight shall be (21.3 kg) 47.0 lb. The
system shall be Electro-Voice SL12-2V.

Uniform Limited Warranty Statement

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 Limita-
tions: The Limited Warranty 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 Electro-Voice
Service or any of its authorized service
representatives. Obtaining Warranty
Service: To obtain warranty service, a cus­tomer must deliver the product, prepaid, to
Electro-Voice 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 Electro-Voice Service at
600 Cecil Street, Buchanan, MI 49107
(800/234-6831 or F AX 616/695-4743). Inci-

dental and Consequential Damages Ex­cluded: Product repair or replacement and

return to the customer are the only rem­edies provided to the customer. Electro­Voice 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-Voice Accessories are guaranteed
against malfunction due to defects in mate­rials or workmanship for a period of one (1)
year 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.

SL12-2V High-Output, Two-W ay Slant Surround Speaker System

Figure 2—Sl12-2V System Dimensions
and ISO Selection

SL12-2V High-Output, Two-Way Slant Cinema Surround Speaker System

Figure 3—Impedance

3