Lowell SCB-300 Specifications
Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.
Call 800.325.9660, 636.257.3400 • Fax 636.257.6606 • Click www.lowellmfg.com
Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.
Download and print this spec from www.lowellmfg.com to insure that you have the most current information
3c-609
pg 1 of 2
Printed in U.S.A. © 04-17-06
SCB300 / PC312
SCB300 8" Speaker & 12" Clock Grille / PC312 Recessed Backbox
Lowell Speaker-Clock Grille & Companion Backbox Specifications
Mounts (order separately)
Grille Model Description Dimensions Finish Speaker* Clock** Backbox
SCB300 Screw-mount speaker-clock grille 27.25"L x 17"W White 8" 12" PC312
*Lowell offers a wide selection of 8" speaker drivers including dual cone 10oz Series 810 and dual cone 5oz Series 805 with factory wired 70V or 25V transformers.
**Universal clock mounting bracket will accommodate most 12" analog clocks (by others).
Backbox Model Style Dimensions Knockouts Finish Mounts Grille
PC312 Recessed 26"L x 16"W x 3"D 1/2"-3/4" top, bottom & divider Black SCB300
Description
Lowell combination speaker-clock grille Model SCB300 and
recessed backbox Model PC312 provide an architecturally
pleasing solution for recessed horizontal or vertical installation of a paging speaker and clock in school classrooms,
sports/recreation facilities, and medical or professional buildings of all kinds. Dual function speaker and clock mounting
solution is a practical approach that affords reduced fixture
and labor costs while providing a clean architectural appearance. Model SCB300 grille features a universal clock mounting bracket for problem free installation of virtually any 12"
analog clock (by others) and welded speaker mounting studs
for installation of a standard 8" speaker driver (order separately). Lowell offers a wide selection of drivers with optional
70V or 25V transformer for distributed voice paging and
music with clear intelligibility. Frequently ordered models for
speaker-clock grille use include driver Model 805 (12W dual
cone), 810 (15W dual cone), or CT830 (20W coaxial).
Grille Model SCB300 is designed for recessed installation to
backbox Model PC312. For a surface version, use grille Model
SCB700 and backbox Model PC712. This attractive grille is a
one-piece 18-gauge steel assembly with a square perforated
area for clear music and paging transmission, and a cutout for
mounting a 12" analog clock (by others).The clock cutout
includes hardware and provisions for installing Lowell's universal clock mounting bracket for horizontal or vertical orientation.
The perforated speaker area includes welded studs for
installing an 8" speaker driver. The grille assembly with mounted clock and speaker installs to recessed backbox Model
PC312 (order separately) using four (4) screws provided.
Overall dimensions of grille Model SCB300 are 27.25"L x
17"W. The assembly is finished in white powder epoxy for
attractive and durable performance.
Recessed Backbox Model PC312 is designed for recessed
installation of speaker-clock grille Model SCB300. It is formed from
20 gauge steel and measures 26"L x 16"W x 3"D with a divider
between the clock and speaker mounting sections. Symmetrical
design features uniform compound knockouts for 1/2" - 3/4" conduit
on the top and bottom, right and left sides, and in the divider for
error-free job site installation. Additionally, one side features
acoustic deadener to help absorb speaker resonance. The backbox is finished in black powder epoxy.
PC312 Recessed Backbox for Model SCB300
SCB300 speaker-clock grille mounts horizontal or vertical to recessed backbox
Model PC312 (grille shown with clock - by others). Order speaker separately.
One side features
acoustic deadener
to help absorb
speaker
resonance.
SCB300 / PC312
SCB300 8" Speaker & 12" Clock Grille / PC312 Recessed Backbox
Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.
Call 800.325.9660, 636.257.3400 • Fax 636.257.6606 • Click www.lowellmfg.com
Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.
Download and print this spec from www.lowellmfg.com to insure that you have the most current information
3c-609
pg 2 of 2
AUDIO
12”/10”
Speakers &
Accessories
8”
Speakers &
Accessories
6”
Speakers &
Accessories
4”
Speakers &
Accessories
Horn
Speakers &
Accessories
Masking
Speakers &
Generators
Control
Accessories
& Electronics
A & E Specifications
The combination speaker-clock grille for recessed wall installation shall be Lowell Model SCB300 with companion
recessed backbox Model PC312.
The speaker-clock grille Model SCB300 shall be formed from
18 gauge steel and measure 27.25"L x 17"W. The grille
assembly shall include a solid face plate with a square perforated area and welded studs for installing an 8" speaker driver (order separately), and a universal clock mounting bracket with hardware for horizontal or vertical installation of a 12"
analog clock (by others). The grille assembly shall be
finished in white powder epoxy and include screws for installation to recessed backbox Model PC312.
Recessed backbox Model PC312 is formed from 20 gauge
steel and measures 26"L x 16"W x 3"D with a divider
between the speaker and clock mounting sections. Uniform
knockouts on the top and bottom, right and left sides, and in
the divider are compound 1/2" - 3/4". One section of the
divided backbox (for the speaker) shall be equipped with
acoustic deadener. The backbox shall be finished in black
powder epoxy.
0.125"
0.125"
27.25"
17"
Universal clock mounting bracket, installs with hardware
provided, for horizontal or vertical installation of virtually
any 12" analog clock (by others).
8" speaker driver
mounts to welded
studs on the rear of the
face plate.
SCB300 speaker-clock grille
PC312 recessed backbox
A
A
Knockouts
0.50" - 0.75"
4 each side
2 top and bottom
2 on divider.
16"
A-A
26"
26.943"
13"
13"
Acoustic
Deadener
Acoustic deadener
for speaker
3"
Grilles - Clock Speaker
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