Electro-Voice SL12-2H User manual

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 (switch-
able)
• Slanted profile for greater direc-
tivity
• 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 sys-
tem. 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 sur-
round sound requirements using high-qual-
ity, professional-level components such as a
high-frequency 100º x 50º horn/driver and a
12-inch woofer. The sleek black-vinyl en-
closurewithablackclothgrilleattachedwith
four screws has been selected to blend into
most interior design concepts.
A second-order (12-dB-per-octave) cross-
over at 2,700 Hz is used to separate the two
frequency sections and provide equalization
for the HF driver. The bass section was de-
signed 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 re-
sponses 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 direc-
tional information was measured at 20 feet.
Figure 2 illustrates the horizontal and verti-
cal polar responses.
Figure 3 shows the horizontal and vertical
beamwidths. Beamwidth is the angle at
which the horizontal and vertical polar re-
sponses have decreased in level by 6 dB
when compared with the axial frequency re-
sponse.
Figure 4 illustrates the total directivity of the
SL12-2H. The directivity factor Rθ(Q) is the
relative value, at a point, of the SL12-2H
output when compared to an ideal spherical
response. The directivity index, Di, is calcu-
lated by Di= 10log10Rθ.
Power-Handling Test
Electro-Voice components and systems are
manufactured to exacting standards, ensur-
ing they will hold up, not only through the
most rigorous of power tests, but also
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
capabilitiesofthecomponents.Electro-Voice
will support relevant additional standards as
and when they become available. Extreme,
in-house power tests, which push the per-
formance 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:
RSR = 6.8 (1.15 x REohms
P E(MAX) = 200 watts
Test voltage = 36.9 volts rms.
73.8 volts peak
The "peak" power-handling capacity of a
woofer is determined by the peak test volt-
age 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 "av-
erage" 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
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 re-
liably, even at these levels.
Use in Cinemas
The SL12-2H has features which make it
particularly suitable for use as cinema sur-
round sound, a black vinyl appearance to
complement most theater interiors. The
SL12-MB universal U-bracket provides a
cost-effective and safe method of suspend-
ing the SL12-2H. The high dynamics and
highpowerhandlingofferedbyprofessional-
grade components make it especially suitable
for digital surround sound. The SL12-2H is
currently pending THX®1 approval.
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
increasedisolationcanbehungfromtheceil-
ing. 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 sur-
face. The grille of the SL12-2H is securely
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 pas-
sive 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
8ohms. 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
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 se-
lected. The input panel will be located on
the top surface. (See Figure 6.)
Input connections shall be #10 screw termi-
nals on a barrier strip. Suspension of the sys-
tem shall be achieved through the use of the
SL12-MBU-bracket (for ceiling or wall sus-
pension), 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 sys-
tem shall be the Electro-Voice SL12-2H.
Uniform Limited Warranty
Electro-Voice products are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a specified period,
as noted in the individual product-line
statement(s)below, or in the individualprod-
uct data sheet or owner’s manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified pe-
riod, 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
Warranty does not apply to: (a) exterior fin-
ish or appearance; (b) certain specific items
described in the individual product-line
statement(s)below, or in the individualprod-
uct data sheet or owner’s manual; (c) mal-
function 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 Au-
dio 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 ser-
vice representatives together with proof of
purchase of the product in the form of a bill
of sale or receipted invoice. A list of autho-
rizedservicerepresentativesisavailablefrom
EVI Audio Service at 600 Cecil Street,
Buchanan,MI 49107 (800/234/6831 or FAX
616/695/4743). Incidental and Conse-
quential Damages Excluded: Product re-
pair or replacement and return to the cus-
tomer 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 per-
sons 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 Speakers and Speaker Sys-
temsareguaranteedagainstmalfunction due
to defects in materials or workmanship for a
periodoffive(5)yearsfrom the date of origi-
nalpurchase.The Limited Warranty does not
apply to burned voice coils or malfunctions
such as cone and/or coil damage resulting
from improperly designed enclosures. Elec-
tro-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 Uni-
form Limited Warranty statement.
For warranty repair, service information, or
a listing of the repair facilities nearest you,
contactthe service repair department at: 616/
695-6831 or 800/685-2606.
Fortechnical assistance, contact Technical
Support at 800/234-6831 or 616/695-6831,
M-F, 8:00 a.m. to 5:00 p.m. Eastern Stan-
dard time.
Specifications subject to change without no-
tice.
_________
1. THX is a registered trademark of Lucasfilm Ltd.

SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
Figure 1—Axial Frequency Response
(anechoic environment, 1 watt at 1
meter into mid band)
Figure 2—One-Third-Octave Polar
Response (anechoic environment) HORIZONTAL
VERTICAL
"flat" Response
ISO 2969 roll-off
5 dB per Division
SPL in dB
FREQUENCY (Hz)

SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
HORIZONTAL
VERTICAL
Figure 3—Beamwidth vs.
Frequency (anechoic environment)
Figure 4—Directivity vs. Frequency
(anechoic environment)
Figure 5—Harmonic Distortion, 0.1
Rated Power Input (10 watts),
"flat" response
5 dB per Division
SPL in dB
FREQUENCY (Hz)

SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
Figure 6—SL12-2H Dimensions and
ISO Selection
Figure 7—Impedance ("flat"
response)
IMPEDANCE IN OHMS
FREQUENCY (Hz)

SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
SL12-2H High-Output, Two-Way Slant Cinema Surround Speaker System
SPEAKERS—Monitors Part Number 534269—9727
600 Cecil Street, Buchanan, MI 49107
616/695-6831, 616/695-1304 Fax
Specifications
Axial Frequency Response (swept sine
wave, 4 volts at 10 feet on axis,
anechoic environment normalized for
1 watt/1 meter; (see Figure 1):
75-20,000 Hz
Low-Frequency 3-dB-Down Point:
75 Hz
Usable Low-Frequency Limit (10-dB-
down point):
48 Hz
Half-Space Reference Efficiency:
1.91%
Long-Term Average Power-Handling
Capacity (per ANSI/EIA RS-426-A
1980; see Power-Handling Capacity
section):
200 watts
Maximum Woofer Acoustic Output:
3.82 watts
Sensitivity (SPL at 1 m, 1 W into
nominal impedance, anechoic environ-
ment, band-limited pink-noise signal,
100-15,000 Hz):
93 dB
Beamwidth (angle included by 6-dB-
down points on polar responses,
horizontal and vertical planes,
indicated one-third-octave bands of
pink noise; see Figure 3),
Horizontal 400-16,000 Hz
100º (+60º, -65º)
Vertical 2,000-16,000 Hz
50º (+20º, -10º)
Directivity Factor Rθθ
θθ
θ(Q), 800-16,000-Hz
Median (see Figure 4):
12.27 (+13.28, -6.69)
Directivity Index Di, 800-16,000 Hz
Median (see Figure 4):
10.0 dB (+4 dB, -4.5 dB)
Distortion, 0.1 Full Power Input (see
Figure 5),
Second Harmonic,
100 Hz:
<1%
1,000 Hz:
4%
10,000 Hz:
3%
Third Harmonic,
100 Hz:
1%
1,000 Hz:
<1%
10,000 Hz:
<1%
Transducer Complement,
Low-Frequency:
12-inch woofer
High-Frequency:
DH2010A and 100º x 50º horn
Crossover Frequency:
2,700 Hz (see Figure 8)
Crossover Slope:
12 dB per octave
Impedance (see Figure 7),
Nominal:
8 ohms
Minimum:
6.8 ohms
Response (see Figure 6):
ISO 2969/Flat (in/out) switchable
Input Connections:
Screw terminals (#10) on barrier strip
Enclosure Materials and Colors:
Black vinyl-clad V-folded particle-
board enclosure.
Grille:
Black cloth on MDF (medium density
fiberboard) frame, permanently
attached
Suspension provided with section:
pre installed 1/4-20 T-nuts for use
with optional mounting bracket
Optional Accessories:
SL12-MB versatile cinema wall and
ceiling bracket kit
Dimensions (see Figure 6),
Height:
381 mm (15.00 in.)
Width:
622.3 mm (24.5 in.)
Max. Depth:
326.1 mm (12.84 in.)
Net Weight:
21.3 kg (47 lb)
Shipping Weight:
27.2 kg (60 lb)
Figure 8—Crossover Response
SPL in dB
FREQUENCY (Hz)
©EVI Audio 1997 • Litho in U.S.A.