Lowell SM805A Manual de Usario

Lowell Vocero SM805A

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INSTALLATION SHEET #IS-SM805A
Sound Masking Speaker System
Electrical and Acoustical Specifications
Sensitivity
(70V/1W/1M)
Driver Type Frequency Response
Model
Number
Transformer
Taps Switch
Dispersion
(-6dB@2kHz Octave)
1/4W @ 70V
1/2W @ 70V
1W @ 70V
2W @ 70V
4W @ 70V
#805
8" Dual
Cone
Model
Type
Black
With
Hangers
Instruction Sheet:
IS-SM805A
P/N: 19311
Page 1 of 1
Printed on 2-25-13
Lowell Manufacturing Company 100 Integram Drive Pacific, Missouri 63069 U.S.A.
Phone: 800-325-9660 Fax: 636-257-6606 (www.lowellmfg.com)
Design Note: Sound masking speakers are typically mounted above the
finished lay-in tile ceiling in the plenum space. In installations where the
plenum space is not taller than 6', the sound masking speakers are installed
with the bottom of the enclosure roughly 1' above the tile ceiling with the
speaker aiming upward so the masking noise bounces off of the slab or deck
above. When the plenum space is taller than 6', use the SM810A masking
speaker instead because the SM810A can be hung 6' above the finished
ceiling aiming downward. The SM805A masking speaker hangers have been
designed to hang the speaker only in the upward firing orientation. The exact
mounting position of the masking speaker dramatically affects the dispersion
of the sound masking noise. This installation sheet has been written under the
assumption that a qualified consultant or designer has pre-determined the
speaker spacing and mounting orientation that will result in the desired sound
masking noise coverage.
SM805A 183Hz-6.7kHz + 7dB 95.6dB 110 Degrees
Conical
“Off” Switch
Position
Is Also
Available
Wire nuts or crimp type connectors (provided by the installer) may be
used to make a simple splice to the provided positive red (+) and common
black (-) input wires. If desired, a second cable may be spliced in parallel
with the incoming line to feed to the next speaker in the string. After making
the splice, loosen the Romex connector clamp screws and insert the splice
into the masking speaker through the Romex connector. Tighten down the
Romex connector clamp to provide strain relief for the input cable or cables.
If desired, the input plate may be removed, the wires can be pushed through
the Romex connector and plate, the spice can then be made, and the plate
can be screwed back in place. The input wiring splice should always be
permanently located inside of the masking speaker wiring cavity and not in
open space outside of the input plate.
A transformer tap selector switch is provided on the side of the masking
speaker enclosure. 70V 1/4W, 1/2W, 1W, 2W, and 4W select “OFF” and
positions are provided. The transformer tap switch is set at 1W when
shipped from the factory. Set the selector switch as specified by the system
designer.
1
Unfold the hangers as shown and use the two (2) (4) “S” hooks and four
foot piece of chain (supplied with the masking speaker) to suspend the
speaker from the building structure. Hanging point hardware to attach the
chain to the building structure will be furnished by the installer. The speaker
system must be mounted in accordance with local, state, and federal codes
and regulations, and industry standard practices.
3
2
When shipped from the factory, the hangers are folded across the front
of the grille.

Especificaciones del producto

Marca: Lowell
Categoría: Vocero
Modelo: SM805A

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