Bogen OPS1 User manual

Description Features
• Wide dispersion coaxial driver for broad, even 140° coverage
• Stable, high definition metal-alloy cone
• MDT™ cone design delivers detailed sound
• MLS™ eliminates conventional centering “spider” for
more accurate voice coil centering
• High-efficiency drivers deliver superior performance
• Extremely good off-axis response
• Computer-matched venting system for full bass output
• High power handling capability for foreground sound
• Selectable power taps via front-mounted control
•16-ohm input for non-transformer multi-speaker systems
• Easy wiring with snap-on connector
• Connector provides loop-through to next speaker
• Easy to use cable suspension system that includes three
suspension cables with attached forged eyebolts
• Threaded brass insert point for optional safety cable
eye bolt
• Low-resonance cabinet structure
• Off-white or dark gray textured finish; easily painted to
match theme decors
• Attractive, contemporary, sturdy steel grille assembly with
fine perforations
• Accessory 10-foot long cable kit for use as main drop cable
or safety cable (Model CK10 sold separately)
The Orbit Pendant Speaker (OPS1) is the ideal choice for high
ceiling and open space environments.
The OPS1features NEAR's MLS™ and MDT™ technologies
(see below), which improve sound quality and increase operating
reliability.
The low-distortion speaker design, featuring NEAR's spiderless
driver and one-piece metal-alloy cone structure, delivers superb
articulation and the highest intelligibility for both music and
speech.
Unique MDT™ (Metal Diaphragm Technology):
• Solid, one-piece cone structure eliminates the traditional
dust cap
• Extremely stable cone structure over extended periods
• Fast transmission of sound through the diaphragm means
low energy storage
• Special hard anodizing process creates a ceramic surface for
increased stiffness
• Super-efficient thermal path for cooling the voice coil (not
paper or plastic)
• High rigidity and low mass versus typical paper or plastic
cones
MLS™ (Magnetic Liquid Suspension):
• Magnetic liquid (Ferrofluid) injected into magnet gap
• Constant lubrication of the gap prevents oxidation from
occurring
• Voice coil is most efficiently cooled by fluid path rather
than air
• Lower distortion via stronger centering forces on voice coil
• Increased reliability, particularly in high power daily use
systems
Specifications subject to change without notice.
© 2003 Bogen Communications, Inc.
Part No. 54-8016-02B 0712
Orbit
Pendant Speaker
Model OPS1
OPS1W
(Off-white)
OPS1B
(Dark Gray)

Technical
Specifications
The loudspeakers shall be NEAR ORBIT Model OPS1W
(Off-white), and OPS1B (Dark Gray) or approved equiva-
lent, consisting of one 6-1/2" (nominal) low frequency trans-
ducer, and one 20mm (3/4") (nominal) high frequency trans-
ducer with a filter network for dividing frequencies between
the transducers.
An injection-molded,ABS material containing fire inhibitors
with a 94VO rating, shall house all components.
The enclosure shall be supplied in either off-white or dark
gray in color with a mild texture finish to promote paint
adhesion if desired.A perforated speaker grille shall be made
from heavy-gauge steel, color-matched to the enclosure.
The low-frequency driver shall utilize a metal-alloy cone
with hard-anodized surface treatment for rigidity and cor-
rosion resistance.The cone shall provide a heat transfer ele-
ment for the voice coil under high-power input. A com-
pounded rubber cone surround shall be formulated to with-
stand environmental conditions with high or low heat, high
or low humidity, and ultra-violet light.The voice coil shall be
protected via a high gauss low viscosity magnetic liquid (fer-
rofluid), to prevent corrosion from occurring in the magnet
gap. The fluid will also serve as a thermal path to further
reduce heat build-up in the voice coil.The driver will utilize
the ferrofluid to provide a centering force for the voice coil
in the magnet gap.
The high-frequency driver shall utilize a diaphragm consist-
ing of black polycarbonate. Ferrofluid shall dampen the voice
coil and facilitate the transfer of heat from the coil to the
magnet structure.
The hanging cables shall be designed with forged eye bolts
captured on one end to attach directly to the enclosure.The
other end of the cables shall have a secured loop that will
attach to a quick connect clip. An integral safety cable
attachment point shall be included in the enclosure. An
optional 10-foot cable kit (CK10) shall be available to serve
as a back-up safety cable or main suspension drop cable. An
internal safety strap ensures that the drivers are secured to
the upper suspension.
The input connector shall be a 4-screw snap-lock removable
connector, providing "loop-through" for additional speakers.
Power input selection shall be via a front-mounted rotary
switch, located under the removable grille. 70V (high-imped-
ance) tap selections shall be 1, 2, 4, 8, 16, and 32 watts; 100V
(high-impedance) tap selections shall be 2,4,8, 16,and 32 watts.
A low-impedance 16-ohm selection shall also be provided.
Usable coverage area shall be 140°.
Dimensions of the speaker shall not exceed 15" diameter x
9-1/4" high.Weight shall not exceed 10 lb.
Architect & Engineer
Specifications
SPECIFICATIONS OPS1
Frequency Response (-10 dB)*45 Hz to 19 kHz
LF Driver 6-1/2" MDT Metal-Alloy Cone (MLS Voice Coil Centering System)
HF Driver 20mm (3/4") Polycarbonate Dome
Sensitivity (1W/1M)89.5 dBspl (Average 100 Hz - 10 kHz)
Impedance Ratings Low (16 ohms) / High (70V/100V)
Power Input (Max.) 100W @ 16 ohms; 32W @ 70V/100V
Power Settings (in watts)†70V: 32, 16, 8, 4, 2, 1
100V: 32, 16, 8, 4, 2
Enclosure Material Fire-rated (94VO) ABS
Grille Material Powder-Coated Perforated Metal
Terminations 4 Terminal Snap-Lock Input Connector
Product Weight 10 lb.
Speaker Dimensions 15" dia. x 9-1/4" D
Included Accessories (3) Suspension Cables; (3) Forged Eye Bolts; (3) Nuts;
(1) Quick-Snap Clip; (1) Snap-Lock Input Connector
Optional Accessories Cable Kit (CK10)
Enclosure Finish & Color Textured Off-white or Dark Gray
*Free-Space Response, 16-ohm input
† Front panel switch selected (under grille)

Off-Axis Response
Graph shows modification to an on-axis
response.
Frequency Response
Open space @ 1m
Polar
Response
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
16 kHz
(dBspl)
(Hz)
(dB)
(Hz)
32W
16W
8W
4W
2W
1W
16 ohms
(@ 1W)
90 deg
60 deg
45 deg
30 deg
15 deg
0 deg
Output Level @ 1m
Attenuation

50 Spring Street, Ramsey, NJ 07446, USA
Tel: [phone] • Fax: [phone]
www.bogen.com
Mechanical Drawings
(Grille shown partially removed)