Bose AVM-1 - Page 2

Product Overview
q
Microphone aperture: The aperture of the microphone. Do not obstruct this opening.
w
Spring clips: Use these clips to attach the microphone securely to the acoustic ceiling tile.
e
Condensation cover: Protects the wiring terminal if condensation collects on the wiring or microphone housing. Use a screwdriver to
remove or reattach this cover.
r
Wiring terminal (under condensation cover): Mic-level output for balanced analog audio signal.
Technical Specifications
Type Electret condenser
Directivity Omnidirectional
Audio Output Analog, balanced mic-level
Frequency Response 100 Hz–6 kHz (±4 dB, relative level 1 kHz)
Maximum Input SPL 115 dB at 1 kHz
Sensitivity -16 dBV (±3 dBV) (typical, 1 kHz, 1 Pa/94 dB SPL)
THD+N < 1% (1 kHz, 1 Pa/94 dB SPL)
Recommended Ceiling Thickness < 2.5 cm (1.0 in)
Recommended Wiring
Type: Shielded twisted-pair plenum wire
Gauge: AWG 28–AWG 20 (0.08 mm
2
–0.52 mm
2
), recommended
Length: < 610 m (2,000 ft), indoors
Connectors Bare-wire terminals (−, +, shielded ground), 3.5 mm pitch
Power 48 VDC, 10 mA phantom power via ground terminal (typical)
Operating Temperature 0 °C to 40 °C (32 °F to 104 °F)
Operating Humidity 80% (without condensation)
Dimensions (H × W × Ø) 43 mm × 99 mm × 70 mm (1.7 in × 3.9 in × 2.8 in)
Net Weight 0.06 kg (0.14 lb)
Installation Instructions
After reading the Installation Guidelines above, follow the steps below when installing the AVM-1 microphone.
AVM-1 Microphone Installation Guide
Front Panel
99 mm (3.9 in)
70 mm (2.8 in)
q
q
w w w w
Rear Panel
50 mm
(2.0 in)
20 mm
(0.8 in)
e
e
r
r
Side View
43 mm
(1.7 in)
Use the browser-based
CSP configuration
utility (hosted on the
Bose CSP) to calibrate
the AutoVolume feature.
Refer to the installation
guide included with
the Bose CSP to learn
how to access the
configuration utility.
Cut a circular hole in
the ceiling or ceiling tile.
The diameter must be
between 57 mm and 64 mm
(2¼ in and 2½ in).
The ceiling or ceiling tile
must be thinner than 2½ cm
(1 in).
57 mm–64 mm
2¼ in–2½ in
< 2½ cm
< 1 in
Loosen the screws above
the wiring terminals.
Insert shielded twisted-pair
plenum wire (AWG 28
to AWG 20 [0.08 mm
2
to
0.52 mm
2
]) into the +, −,
and ground terminals.
Retighten the screws above
the wiring terminals to
secure the wires in place.
Loosen and remove the two
screws on either side of
the condensation cover.
Insert the −, +, and ground
wires connected to the
AVM-1 to the corresponding
terminals of a Euroblock
included with the Bose CSP.
Connect that Euroblock to
an analog input on the rear
panel of the Bose CSP.
Slide the condensation
cover away from the center
of AVM-1, and then lift it
up to expose the wiring
terminal.
On the AVM-1, arrange
the connected wires so
they rest on the large
tab below the wiring
terminal. This ensures
the wires stay in place
under the condensation
cover.
q
w
t
e
Installation Guidelines
Before installing the AVM-1, please note the following:
Do not install the AVM-1 in a ceiling or ceiling tile that is thicker
than 2.5 centimeters (one inch).
Avoid placing the AVM-1 near vents, HVAC equipment, or other
machinery that could produce vibrations or sounds that would be
detected by the microphone.
We recommend using wire no longer than 610 meters (2,000
feet) to connect the AVM-1 to the Bose CSP.
We recommend installing the AVM-1 in ceilings directly above the
center of the area where ambient noise is likely to occur. If the
ceiling is less than 3.6 meters (12 feet) high, install the AVM-1 in a
wall rather than the ceiling.
Place the AVM-1 at least 1.8 meters (six feet) from other
loudspeakers and above the height of the highest loudspeaker.
Make sure other loudspeakers are not pointed directly at
the AVM-1. This will reduce the possibility of the microphone
detecting sounds that are not part of the ambient noise.
If you plan to install two or more AVM-1 microphones:
Maintain at least 10.7 meters (35 feet) between microphones.
Do not install multiple AVM-1 microphones if the loudspeakers
in the room are higher than 7.6 meters (25 feet).
If the loudspeakers in the room are 3.7 meters to 7.6 meters
(12 feet to 25 feet) high, install one AVM-1 for every 324
square meters (3,600 square feet).
If the loudspeakers in the room are less than 3.7 meters (12
feet) high, install one AVM-1 for every 162 square meters
(1,800 square feet).
After installing the AVM-1 microphone, you will need to use the
browser-based CSP configuration utility (on the Bose CSP)
to calibrate the AutoVolume feature. After that, if any of the
following occurs, use the CSP configuration utility to recalibrate
the AutoVolume feature:
The location of an AVM-1 changes.
The room’s physical layout or acoustic dampening changes.
The model or position of any loudspeaker in the room changes.
The equalization of a loudspeaker or equalization of a zone
(listening area) changes.
The firmware of the Bose CSP changes.
Place the condensation
cover over the wiring
terminal and wires on
the AVM-1.
Slide the condensation
cover toward the center
of the AVM-1.
u
Reinstall and tighten
the screws to secure
the condensation cover
to the AVM-1.
i
Pull the spring clips
toward each other,
and then insert them
through the hole you
cut in Step 1.
Release the spring clips.
The spring clips and the
edge of the microphone
will tightly grasp the
ceiling or ceiling tile.
o
a
y
r
Introduction
Package Contents