Lowell LT-810-72-BB Specifications

Model series: LT (music / paging)
Lay-in Tile Packaged Speaker (music / paging, 8" speaker)
Description:
LT assembly installs easily in suspended tile ceilings. Selection of drivers, transformers and backboxes provides various performance levels for music or commercial paging. Ships ready-to-install—does not require speaker cut-outs in ceiling tile. Includes new restraint tabs (tie-offs) for code compliance.
1 x 2 Assembly
: supported by T-Bar grid; includes patented integral T-Bar* for fast installation when replacing half of non-tegular 2 x 2 (1/4 of non-tegular 2 x 4) ceiling tile. Includes driver mounted to 1 x 2 sub­plate, grille and integral T-Bar (optional xfmr and backbox).
2 x 2 Assembl
y: replaces standard 2'x2' ceiling tile; supported by T­bar grid. Includes factory-wired speaker mounted to 2 x 2 subplate and grille (optional xfmr and backbox).
Features: 
• DRIVER selections:
– driver 810:
15W dual cone speaker with 10 oz. magnet, for back-
ground music and commercial paging.
– driver CT830:
20W coaxial speaker with 10 oz. LF and 2.1 oz. HF magnets, for background music and commercial paging or musical performance applications when used with a backbox.
• TRANSFORMER selections (optional):
– xfmr. TLM572 – xfmr. TLM870: – xfmr. TLM1670A:
: 70/25V transformer with taps at 0.25, 0.5, 1, 2, 5 W
70V transformer with taps at 1, 2, 4, 8 W
70V transformer with taps at 4, 8, 16 W
• GRILLE:  fine-perforation white grille for maximum free-air space and excellent sound transmission. 1 x 2 grille has integral (2-ft.) T-bar to support neighboring non-tegular tile. 2 x 2 grille replaces single 2 x 2 tile. Models with “VC” suffix include a 50 ohm volume control with white knob on front of grille (hand or screwdriver adjustable).
• BACKBOX selections:
– no backbox: – backbox (BB):
for infinite baffle applications.
.147 cu.ft. backbox protects speaker assembly. Speaker leads exit through metal clamp for fast connection—splice connecting wires, push them inside enclosure, tighten clamp.
– volume backbox (Vb)
: .8 cu.ft. backbox with acoustic lining en­hances audio performance. Speaker leads exit through metal clamp for fast connection—splice connecting wires, push them inside en­closure, tighten clamp.
A&E Specifications:
The speaker system for suspended tile ceilings shall be Lowell LT-series Model _______ ( 1 x 2 or 2 x 2 ). The 1 x 2 system shall replace half of a non-tegular 2 x 2 ceiling tile or one-fourth of a non-tegular 2 x 4 ceiling tile and shall include an integral T-Bar to support the adjacent non-tegular
*US patent no’s. 7120269; D467579; 7643647
1 x 2 assembly shown without backbox (infinite baffle).
2 x 2 assembly shown with volume backbox (Vb suffix in model no.)
Driver / Transformer selections:
810 speaker
TLM572
1 x 2 assembly shown with backbox (BB suffix in model no.)
Optional volume control knob on grille is hand or screwdriver adjustable.
CT830 speaker
TLM870
TLM1670A
tile. The 2 x 2 assembly shall directly replace a 2 x 2 tile. Each system shall include a factory-mounted driver mounted to a subplate with fine perforation white steel grille and restraint tabs for code compliance. Speaker shall be 8-in. with power rating of ______ , magnet weight of ____, frequency response of ______ and sensitivity of _______ (mea­sured 1W/1M).
(Optional:  System shall include steel backbox with a volume of _____; a _____W transformer with primary taps at ______________; a volume control with white knob on front of grille).
Model No. Assembly Size Driver Transformer Transformer Taps Backbox (cu.ft.) Grille Vol. Control Knob
LT-810 1 x 2 810 (15W) --- --- --- White --­LT-810-BB 1 x 2 810 (15W) --- --- .147 White --­LT-810-72 1 x 2 810 (15W) TLM572 .25, 0.5, 1, 2, 5 W (70/25) --- White --­LT-810-72-VC 1 x 2 810 (15W) TLM572 .25, 0.5, 1, 2, 5 W (70/25) --- White Yes LT-810-72-BB 1 x 2 810 (15W) TLM572 .25, 0.5, 1, 2, 5 W (70/25) .147 White --­LT-810-72-BB-VC 1 x 2 810 (15W) TLM572 .25, 0.5, 1, 2, 5 W (70/25) .147 White Yes LT2-810-BB 2 x 2 810 (15W) --- --- .147 White --­LT2-810-72-BB 2 x 2 810 (15W) TLM572 .25, 0.5, 1, 2, 5 W (70/25) .147 White --­LT2-810-72-BB-VC 2 x 2 810 (15W) TLM572 .25, 0.5, 1, 2, 5 W (70/25) .147 White Yes LT-830-BB 1 x 2 CT830 (20W) --- --- .147 White --­LT-830-870 1 x 2 CT830 (20W) TLM870 1, 2, 4, 8 W (70V) --- White --­LT-830-870-BB 1 x 2 CT830 (20W) TLM870 1, 2, 4, 8 W (70V) .147 White --­LT2-830-T870-Vb 2 x 2 CT830 (20W) TLM870 1, 2, 4, 8 W (70V) .8 White --­LT2-830-TM16-Vb 2 x 2 CT830 (20W) TLM1670A 4, 8, 16 W (70V) .8 White ---
Spec. No. 1047 (rev. 02.06.13) pg. 1 of 2
©2013 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069. Phone–800.325.9660 Fax—636.257.6606. Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification. (lowellmfg.com)
Includes restraint tabs (tie-offs) for code compliance.
No backbox (1 x 2 assembly):
12.922"
12.017"
23.75"
1'x2' installation: Replaces half of a non-tegular 2'x2' tile.
Integral T-Bar supports non-tegular tile that was cut.
2.77"
1.247"
Integral T-Bar
“Vb” backbox 2 x 2 (assembly):
23.75"
23.75"
2'x2' installation: Replaces 2' x 2' tile. Backbox is offset
for positioning around plenum obstructions.
6.455"
Integral
T-Bar
“BB” backbox (1 x 2 assembly):
12.922"
12.017"
23.75"
Driver Specs (measured half space)
Speaker Size Power Type Ceramic Frequency Dispersion Voice Coil Voice Coil Sensitivity Max SPL* Depth Weight Model No. Rating Magnet Response (octave avg.) Impedance Diameter 1W / 1M (w/o xfmr) (w/o xfmr)
810 8" 15W Dual Cone 10 oz. 47Hz - 20kHz +6dB 120° @ 2000Hz -6dB 8 Ohms 1" 95dB Avg 107dB 2.84" 2.0 lbs CT830 8" 20W Coaxial 10 oz. LF 50Hz - 17.5kHz +
*Calculated value 1M @ speaker maximum power. Complete information including frequency and polar data is available on the speaker spec sheet.
2.1 oz. HF 50Hz - 19kHz Nominal 2000Hz -6dB 0.57" HF
4.13"
1.247"
6dB 85°@ 8 Ohms 1" LF 96dB Avg 109dB 3.0" 2.4 lbs.
“BB” backbox (2 x 2 assembly):
23.75"
23.75"
4.13"
Spec. No. 1047 (rev. 02.06.13) pg. 2 of 2
©2013 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069. Phone–800.325.9660 Fax—636.257.6606. Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification. (lowellmfg.com)