Biamp Desono MASK4C Original operating instructions

A: 9300 S.W. Gemini Drive Beaverton, OR 97008 USA W: www.biamp.com
Desono™
MASK4C(T) / MASK6C(T) Loudspeaker
PRODUCT DESCRIPTION
The Desono MASK4C(T) / MASK6C(T) surface mount
loudspeakers deliver crystal clear sound for all your public
address and background music needs. Available in black or
white, the coated paper cone woofer and silk dome tweeter
result in a high SPL and extremely low distortion, ensuring
unprecedented clarity over the entire frequency spectrum.
The ClickMount bracket enables all audio connections to
be made at the bracket. Pre-defined horizontal and vertical
notches in the bracket make loudspeaker adjustments fast
and repeatable. To complete the installation, simply ‘click’
the loudspeaker in place.
The loudspeakers are designed for outdoor applications
such as patios or concourses, and are an ideal choice for
both indoor and outdoor distributed audio applications that
demand superior speech intelligibility and full range music
reproduction. The loudspeakers are of rigid construction to
withstand extreme conditions.
FEATURES
• Weather-resistant (aluminium grille)
• Wall and ceiling mountable with ClickMount click & connect
• Connectors with passthrough and 0.14 – 4 mm² solid or
stranded wire capacity
• Glass fibre reinforced ClickMount bracket with integrated
spirit level
• 3 stage overload protection
• Asymmetric tweeter horn design
• Coated 4.25”LF driver for MASK4C(T) and 6.5” LF driver for
MASK6C(T)
• Horn loaded silk dome tweeter
• Rotatable logo
• 70W power handling for MASK4C(T) and 200W for
MASK6C(T)
• Low Impedance (8 and 16 ohm) and 70V/100V operation (on
T versions)
• Integrated safety nut for SAFCAB (supplied)
• The installer can mount the ClickMount and connect the
speaker cables while the speakers are still safely packed
inside the packing carton.
• Incorporated 5° downward listening angle
Installation & Operation Guide

page 2 Installation and Operation Guide MASK4C(T) / MASK6C(T)
Downward listening axis
MASK4C(T) vertical mounting
MASK4C(T) horizontal mounting
5°
5°
CEILING
WALL
min 145 mm
min 50 mm
speaker
wires
80 mm
The ClickMount facilitates safe and simple installation.
Note the minimum distance from the ceiling and wall as
shown in the drawings.
MASK6C(T) vertical mounting
MASK6C(T) horizontal mounting
CEILING
WALL
min 115 mm
min
20 mm
speaker
wires
80 mm
CEILING
WALL
min 200 mm
min 105 mm
speaker
wires
80 mm
CEILING
WALL
min
45 mm
min 140 mm
speaker
wires
80 mm

MASK4C(T) / MASK6C(T) Installation and Operation Guide page 3
CLICKMOUNT INSTALLATION
1. Determine where the ClickMount will be located.
Refer to the diagrams on the previous page for the
recommended distance between the ClickMount and
the ceiling and wall.
The cable entry point is 95mm below the top of the
bracket. The cable can enter from the rear of the
bracket so that it is hidden from view.
CAUTION: The ClickMount MUST be mounted
with the arrows facing upwards.
2. Mark the four mounting holes on the wall. Use
the built-in spirit level for correct positioning of the
ClickMount.
3. Drill the mounting holes and secure the ClickMount
with hardware that will support the weight of the
speaker. When drilling holes avoid any hidden cables
or objects inside the wall.
4. Guide the speaker wires through the ClickMount
bracket and up to the connection terminals.
5. Open the connection terminals.
6. Guide the wires through the bracket (a). Connect
the speaker wires, ensuring correct polarity (b).
Two positive and two negative connectors allow
the speakers to connect in a daisy chain. Close the
connection terminals to clamp the wires.
7. Click the cover plate in place.
8. Rotate the ClickMount as required by loosening the
quick lock lever.
9. Attach the SAFCAB cable from the rear of the
speaker to a secondary mounting point on the wall.
Position the secondary mounting point close to and
above the ClickMount to avoid kinetic force if the
mount should fail.
Note: The SAFCAB
can handle more than
10 times the speaker’s
weight.
Ensure the mounting hardware is appropriate for the
wall construction.
b
a

page 4 Installation and Operation Guide MASK4C(T) / MASK6C(T)
POWER SETTINGS
MASK4CT / MASK6CT only: Rotate the power selector
knob to the required position.
The 16 ohm position is for low impedance amplifiers only.
CAUTION: Do not use the speaker on 100 volt
speaker lines with the power switch in the position
shown below. This position is only compatible with 70
volt line amplifiers.
MASK4CT MASK6CT
MASK4CT MASK6CT
CAUTION: The 16 ohm setting is not
compatible with 70 or 100 volt line
amplifiers.

MASK4C(T) / MASK6C(T) Installation and Operation Guide page 5
LOUDSPEAKER INSTALLATION
1. Push the loudspeaker on to the ClickMount. Do not push on the grille.
2. Fasten the quick lock lever and click the speaker on the ClickMount until the
unit is secure. If necessary, adjust the lock tension from the quick lock lever.
3. The speaker can be mounted on the ClickMount in four ways: upright, 90°
rotated to the left, 90° rotated to the right or at the ceiling. Do not attempt to
mount the speaker upside down on the ClickMount. When the speakers are
mounted 90° rotated to the left or right, the logo may be rotated on the grille
to match its orientation.
Note: All MASK models have a 3 stage overload protection.
When too much power is fed into a MASK, a red LED will blink when the audio signal
hits peak levels. When this early warning is neglected, the overload protection will
disconnect the signal to the loudspeakers and the red LED will remain lit.
Turn the audio level down. After about three seconds of cooling down the signal will
be reconnected to the loudspeakers.
CAUTION: Do not push on the grille. If the ClickMount
is located close to the ceiling (minimum 105 mm), then
temporarily loosen the quick lock lever and tilt the mounting
plate downward a few clicks to secure the speaker.
CAUTION: The 16 ohm power setting on the CT models is
not compatible with 70 or 100 volt line amplifiers.
CLICK

A: 9300 S.W. Gemini Drive Beaverton, OR 97008 USA W: www.biamp.com
CONTACT US
Email: [email protected]
Web: support.biamp.com
Warranty: biamp.com/legal/warranty-information
Safety & Compliance: biamp.com/compliance
JUL 2021
PAINTING THE LOUDSPEAKER
CAUTION: Although the loudspeaker is paintable,
Biamp does not recommend painting grilles that are not
removable.
1. Fully mask the grille and loudspeaker face so that all
internal components will not receive any paint. Also
mask o󰀨 any input, tap switch, mounting connections,
and safety labels. Don't use conventional masking
tape and NEVER use duct tape. These kinds of tape
leave adhesive residue that is di󰀩cult to remove and
may cause damage. Painter's or other low-adhesive
tape is best.
2. Spray paint with two light coats. Let all components
dry completely before reassembly.
3. Remove all of the masking materials.
CAUTION: NEVER use abrasives, gasoline,
kerosene, acetone, methyl ethyl ketone (MEK),
paint thinner, harsh detergents or other chemicals on
the loudspeaker. These chemicals and agents may
permanently damage the nish. Some are also toxic
and highly ammable.
IMPORTANT: Blocking the grille holes with paint or
getting any paint on the drivers or internal parts will
a󰀨ect loudspeaker performance and void the warranty.