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Soft dB Inc.
E-mail: info@softdb.com
SMS-FLAT
V
FLAT Sound Masking Speaker
User Guide
20190725
1040, Belvedere Avenue, Suite 215
Quebec (Quebec) Canada G1S 3G3
Toll free: 1-866-686-0993 (USA and Canada)
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Content
1 Overview .................................................................................................................................. 2
2 Specifications .......................................................................................................................... 3
3 Installation ............................................................................................................................... 4
3.1 Safety Instructions ....................................................................................................................................... 4
3.2 Connecting the Speaker ............................................................................................................................ 5
3.3 Securing the Speaker .................................................................................................................................. 6
3.4 Setting the Transformer Tap .................................................................................................................... 7
4 Raised Floor Application ......................................................................................................... 8
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1 Overview
The SMS-FLAT loudspeaker is designed to generate the optimum masking sound in a tight space
where a more standard loudspeaker wouldn’t fit. Equipped with two drivers in dipole
configuration, the SMS-FLAT provides an effective loudspeaker in a very compact form factor.
From Amplifier
Suspended Ceiling Tile
Speaker 1
Speaker 2
Etc.
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2 Specifications
Specifications
Power 10 W
Line Voltage 25 V
Sensitivity 85 dB
Enclosure Material Painted Steel
Frequency Response 100 Hz to 10 kHz
Connectors Screw Terminal
Driver 2.5 x 10 cm (1” x 4”) full range
Color Black (RAL9011) or white (RAL9016)
Dimensions 190 x 135 x 50mm (7-1/2 x 5-5/16 x 2”)
Weight 1.13 kg (2.5 lbs)
Box Dimensions 29.5 x 23 x 9.5 cm (11-5/8 x 9 x 3-3/4")
Shipping Weight 1.21 kg (2.7 lbs)
Slide speaker onto bracket
50mm (2’’)
135mm (5-5/16’’)
Use screws to fasten bracket to
building structure
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3 Installation
3.1 Safety Instructions
• Read and keep these instructions.
• Heed all warnings and follow all instructions contained within this manual.
• Install in accordance with the manufacturer’s instructions.
• Clean only with dry cloth.
• Do not install near water.
• Do not block any ventilation openings.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
• Use the power cord with sealed mains plug appropriate for your local main supply as
provided with the equipment. If the provided plug does not fit into you outlet contact the
manufacturer.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
• Only use attachments and accessories specified by the manufacturer.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus
has been damaged in any way, such as when the power-supply cord or plug is damaged,
liquid has been spilled or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been dropped.
• Operate the product only with the voltage specified on the unit. Fire and/or electric shock
may result if a higher voltage is used.
• Do not modify, kink, or cut the power cord. Do not place the power cord in close proximity
to heaters and do not place heavy objects on the power cord and/or the product itself,
doing so may result in fire or electrical shock.
• Be sure the installation of this product is stable, avoid slanted surfaces as the product may
fall and cause injury, property damage, electrocution and/or fire.
• Do not open the cover.
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3.2 Connecting the Speaker
1) Unscrew the cover plate to access the connector block:
2) Remove the connector block, connect the wires and put back the connector block in place.
Use plenum rated cable and follow local regulations. Typical wire will be 18/2 FT4.
If you connect more than one speaker,
simply twist the wires in the same
From Amplifier
3) Fold the cable inside the cavity and put the cover plate back in place:
4) Secure the cable using the cable clamp:
connector block.
To next speaker
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3.3 Securing the Speaker
Secure the speaker by fastening the mounting bracket to the building structure using screws (not
supplied). Slide the speakers on the mounting bracket.
Note: When mounting the speaker on a vertical surface, be sure to mount the bracket with the forks
facing up to avoid the speaker from falling down.
It’s recommended to use a security chain secured to the speaker through the provided holes in the
enclosure:
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3.4 Setting the Transformer Tap
Remove the rubber cover from the tap knob. Adjust the tap setting using a flat head screwdriver:
The recommended tap for most applications is 4W @ 25V. Some limitations may apply to the sound
masking controller. See controller specifications for more details.
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4 Raised Floor Application
The SMS-FLAT speakers can also be used in a raised floor configuration where space is limited.
Raised floor panels
Since a raised floor panel has a high sound transmission loss, the sound power required to meet
the sound masking target can be quite high, especially for low-frequency (bass) content. For that
reason, it’s recommended to lower the bass content of the target sound masking spectrum to limit
the power demand. Below is the recommended spectrum shape for the SMS-FLAT speaker used in
a raised floor setting.
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