Rev. 6 - 08/2010
Ceiling Speaker Assembly
Copyright© 1998-2010, Alpha Communications®, All Rights Reserved
42 Central Drive • Farmingdale NY 11735-1202 • Phone (631) 777-5500 • Fax (631) 777-5599
TOLL-FREE 1-800-666-4800 • Web: www.AlphaCommunications.com • Email: firstname.lastname@example.org
RB8S / RB8ST
The Alpha Communications® RB8S speaker is a cost
effective ceiling speaker and baffle (grille) combination.
The model RB8S features a high-quality 8 ohm public
address and background music speaker, with excellent
voice and music response. The RB8ST is the same as the
model RB8S, but also includes a built-in (dual voltage) 25
volt/70 volt line transformer.
The RB8S series speaker is designed to be installed easily,
into a standard suspended (hung) ceiling or sheet-rocked
• Large 12.5" diameter covers irregular cut holes
• White, non-glare finish blends with ceiling materials
Easy-on studs for attaching speaker to baffle in seconds
• Baffle (grille) manufactured of U.V. stabilized, high-impact
Paintable and non-corroding baffle (grille)
• Matching white-head screws and push-on nuts furnished
• High quality 8 inch diameter (round), 8 ohm voice and music
1 year limited factory warranty
• Very competitively priced
Flush mounting ring (plastic). (1) required for
each RB8S and/or RB8ST speaker.
Protective enclosure (optional). Protects
speaker from dust and ceiling residue and
helps to project sound from speaker.
Tee-Bar ceiling tile support bridge (optional).
Use for weak or flimsy ceiling or ceiling tiles.
Helps distribute weight of speaker over a larger
area. Used for safety mounting of speakers. Fits
into ceiling tile metal grid.
Same as RB8S but with 45 ohm speaker.
Same as RB8S but with built-in rotary volume
Same as RB8ST but with built-in rotary volume
RB8S / RB8ST