Bogen NEAR A12 User manual

Features
• High-powered, all-weather speaker
• High efficiency and power handling for optimal performance
• One model for both 70V and low-impedance systems
• 225W at 16 ohms
• 70V Power settings: 128, 64, 32, 16, 8 watts
• Dual 6.5" metal-alloy MDT™ mid/bass speaker cones are
extremely stable in all environments
• Patented MLS™ Ferrofluid voice coil suspension replaces
distortion-causing mechanical spider
• Horn-loaded, 1" exit compression driver features a 1.9"
Mylar diaphragm for consistent long-term performance
• 90° Horn delivers constant coverage over listening area
• Dual-layer voice coil with separate inner and outer windings
for high output and ultra-low distortion
• Advanced polymer compound surrounds resist UV rays,
chemicals, and salt spray
• Gold-plated, rust-proof input connectors
• High-density, injection-molded cabinet resists chipping and
scratching
• Low-resonance cabinet structure
• Specially designed vent covers help keep water out
• Heavy-gauge stainless steel mounting yoke with 180° swivel
• Easy-to-grip, oversized mounting knobs
• Speaker mounts with knobs attached for easier, safer installa-
tion in hard-to-reach locations
• Corrosion-resistant woofer frames and mounting hardware
for long-lasting, like-new appearance
• Black cabinet color, attractive styling using patented
Armadillo ridges that improve durability as well as sound
• Adjustable Tilt-Mount Adapter attaches to mounting yoke
(Model TMA812, sold separately)
Description
The A12 features NEAR’s unique technologies to produce the high-
est sound quality in the most durable and reliable loudspeakers avail-
able. The A12 is a compact, high-powered speaker that projects well
in open spaces like theme parks, sports fields, and plazas.
Precise sound reproduction is achieved with two 6.5" mid/bass driv-
ers employing both MDT and patented MLS technologies for supe-
rior sound and weather resistance. The high-frequency driver is a
1.9" horn-loaded diaphragm (1" exit).A built-in 128W transformer
makes theA12 compatible with 70V sound systems.The transformer
can be easily bypassed for use in low-impedance systems (16 ohms).
NEAR’s patented spiderless technology (MLS™) and advanced
materials deliver out-of-the-box performance year after year.
Speaker diaphragms are manufactured with materials that will not be
altered by constant exposure to UV rays or water, cold or heat, or
extremely high or low humidity.
Unique MDT™ (Metal DiaphragmTechnology):
• High rigidity and low mass of metal versus traditional papers
and plastics
• Extremely stable cone structure over long periods of time
• Fast transmission of sound through the diaphragm means
low energy storage
• Special anodizing process creates a ceramic coating for
increased stiffness
• Efficient heat-sinking of voice coils under long-term,
high-power situations
Patented MLS™ (Magnetic Liquid Suspension):
• Voice coil is constantly centered for lower distortion
• Voice coil is more efficiently heat-sinked by fluid instead of
air
• Greater linearity is accomplished because the mechanical
spider is eliminated
• Constant lubrication of the gap prevents oxidation from
outdoor use
Specifications subject to change without notice.
© 2008 Bogen Communications, Inc.
Part No. 54-8023-41C 0902
High-Output,
Long-Throw
Loudspeaker
Model A12

Architect &
Engineer
Specifications
Technical
Specifications
The loudspeaker shall be a NEAR Model A12 with a
power handling capacity of 225W (16-ohm) or 128W
(70V) or approved equivalent. The loudspeaker shall
consist of two 6.5" nominal low-frequency transducers
and one 1.9" nominal mylar high-frequency transducer
with a filter network for dividing and smoothing fre-
quencies between the transducers. A mathematically-
aligned, vented enclosure shall house all components.All
vents shall be further protected from water ingress by
acoustically transparent fabric designed to shed water.
The enclosure shall be constructed from an injection-
molded, high-density (30% or greater) mineral-filled
polypropylene material compounded with UV
inhibitors.
Enclosure shall be molded in black. Surface shall be able
to accept paint. Perforated speaker grilles shall be made
from color-matched perforated polypropylene, also able
to accept paint if required.
The low-frequency drivers shall utilize a metal-alloy
cone with deep-anodized surface treatment for rigidity
and corrosion resistance.The cone shall provide a heat
transfer thermal path for the voice coil under high-
power inputs. Compounded rubber cone surrounds
shall be formulated to withstand all-environment instal-
lations, including salt spray, ultraviolet light (UV), chlo-
rine exposure, heat, cold, and constant humidity. The
voice coil will be centered via a high-gauss, low-viscosi-
ty magnetic fluid (Ferrofluid), which increases the heat
transfer rate from the voice coil under long-term high-
power use. The magnetic fluid shall prevent corrosion
from occurring in the magnet gap.
The high-frequency driver shall utilize an environmen-
tally stable Mylar diaphragm. An integrated horn and
phase compensation device shall provide increased out-
put sensitivity and controlled coverage of the output.
The mounting yoke provided with the speaker shall be
designed with a built-in angle to facilitate installation
when downward angulation is required, as well as 180-
degree left-to-right adjustment. The yoke shall be
formed from heavy-gauge stainless steel (minimum
3mm thick), and finished with a scratch-resistant paint.
In addition, an optional Adjustable Tilt-Mount Adapter
(Model TMA812) shall be available which provides addi-
tional angles for precise orientation vertically over 18
specified points.
The input connectors for 16-ohm and 70-volt systems
shall be gold-plated, rust-proof screws with integral
clamping washers.
Dimensions of the loudspeaker shall not exceed
10-1/4" W x 17-7/8" H x 11-3/4" D. Weight shall not
exceed 22 lb.
SPECIFICATIONS A12
Frequency Response (-10 dB)*55 Hz to 17.5 kHz
LF Driver Dual Metal-Composite 6.5" Cone Woofers,
Patented MLS Voice Coil Guidance System
HF Driver Weatherproof 1.9"Mylar Diaphragm
Constant Directivity Horn, 1" Exit
Sensitivity (1W/1M) 94.5 dBspl
Dispersion 90° Horizontal, 45° Vertical
Impedance Ratings Low (16 ohms) / High (70V)
Power Input (Max.) 225W @ 16 ohms; 128W @ 70V
Power Settings (in watts) 70V: 128, 64, 32, 16, 8
Grille Material Perforated Polypropylene
Cabinet Material Black, Mineral-filled Polypropylene, with UV Inhibitor
Terminations Dual 4-Terminal Barrier Strips with Gold-plated,
Rust-proof Screws
Product Weight 22 lb.
Speaker Dimensions 10-1/4"Wx17-7/8" H x 11-3/4" D
Included Accessories Color-matched, Stainless Steel Mounting Bracket
Optional Accessories Adjustable Tilt-Mount Adapter (Model TMA812)
* Half-space response,
16-ohm input

-6
-12
-18
-24
-30
-36
0
30
60
90
120
150
180
210
240
270
300
330
500 Hz
1 kHz
2 kHz
-6
-12
-18
-24
-30
-36
0
30
60
90
120
150
180
210
240
270
300
330
Vertical
Polar Response
-6
-12
-18
-24
-30
-36
0
30
60
90
120
150
180
210
240
270
300
330
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
16 kHz
Horizontal
Polar Response
Frequency Response
(Half-space @ 1M)
128 W
64 W
32 W
16 W
8 W
1W / 16-ohm
-6
-12
-18
-24
-30
-36
0
30
60
90
120
150
180
210
240
270
300
330
4 kHz
8 kHz
16 kHz
Horizontal Horizontal
Vertical Vertical
100 200 500 1K 2K 5K 10K 20K
50
70
80
90
100
110
120
(Hz)
(dBspl)

50 Spring Street, Ramsey, New Jersey 07446, USA
201-934-8500 FAX: [phone]
www.bogen.com
Mechanical Drawings