Lowell LT2-810-72-BB Lay in Tile Ceiling Loudspeaker Instruction Manual

Model No.
LT2-810-72-BB
Lay-in Tile Ceiling Loudspeaker

INCLUDES:

• 8-inch 15W dual cone driver
• 25V/70V dual-voltage transformer
• 2×2 grille with subplate
• 0.147 cu.ft. enclosure

LT SERIES SPEAKERS are pro systems made for quick installation in suspended lay-in tile ceilings. The 2×2 assembly replaces a 2×2 ceiling tile. This model features an 8-inch 15W dual cone driver, 25V/70V dual voltage transformer, 2×2 white grille with black subplate and 0.147 cu.ft. enclosure.

FEATURES

PERFORMANCE: This model is ideal for applications providing commercial paging and/or background music.
DRIVER (810): The 8-inch 15W dual cone driver with 10 oz.  magnet provides a step up in full range performance from the commercial industry standard, delivering solid performance and value for paging and/or background music applications that require clear communications.
– Driver magnet: 10 oz. ceramic, 3/4-inch hard fiber whizzer cone, 1-inch voice coil, 20-gauge steel frame with zincplated finish
– Driver weight: 2.0 lbs.
– Driver depth: 2.84 in.
TRANSFORMER: Factory-wired dual voltage 25V/70V transformer with primary taps at 0.25, 0.5, 1, 2 and 5W.
ENCLOSURE (8XD4): Certified U.S. steel enclosure with black powder epoxy finish.
– Volume: 0.147 cu.ft.
– Polyurethane foam disc
– Enclosure is offset on the 2×2 (23.75-in. x 23.75-in.) grille assembly to accommodate above-ceiling obstructions.
INSTALLATION:
– Assembly Dimensions: 23.75-in.L x 23.75-in.W x 4.5-in.H
– Restraint Tabs: The assembly features four restraint tabs for code compliance tie-offs.
– Connections: Driver leads exit enclosure through a metal clamp for fast connections — just splice connecting wires, push inside the enclosure, and tighten clamp.
COMPLIANCE & CERTIFICATIONS:
– Made in the U.S.A. with certified U.S. steel and global components.

FEATURES

TECHNICAL DRAWINGS

Dimensions are provided in inches.

DRIVER SPECIFICATIONS

Driver No.| Size| Power
Rating| Type| Ceramic
Magnet| Frequency
Response| Dispersion
@ 2000Hz(–dB)| Voice Coil
Impedance| Voice Coil
Diameter| Sensitivity
1W/1M| Max
**SPL*| Driver
Depth| Driver
Weight**
---|---|---|---|---|---|---|---|---|---|---|---|---
810| 8 in.| 15W| dual
cone| 10 oz.| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95 degrees
conical| 8 ohms| 1 in.| 97.9dB
avg.| 109.7dB| 2.84 in.| 2.0 lbs.

*Calculated value 1M @ driver power rating. See spec sheet for driver 810 for additional information.

TEST METHODOLOGIES: Lowell speaker systems are thoroughly tested to provide specifiers and contractors with accurate data. Test equipment includes the Gold Line TEF-20 analyzer.
– POWER HANDLING: specification is based on E.I.A. Standard RS-426B.
– FREQUENCY RESPONSE: describes the usable response range defined by a ± 6dB window, which is useful in predictive engineering calculations.
– SENSITIVITY: is a computer calculation of the log average sound pressure level (SPL) over the entire engineering bandwidth as given in the Frequency Response (± 6dB).
– MAXIMUM SPL: is calculated based on the Power Handling and the measured log average Sensitivity where Maximum SPL = (Sensitivity @ 1W1M) + 10 log (Power Handling).
– DISPERSION ANGLE: is defined as the angle of coverage that is no more than 6dB down from the on-axis value averaged over the 2kHz octave band. Since speech intelligibility is dependent upon the 2kHz octave, this specification is useful in designing voice reinforcement and music systems that provide even coverage and intelligibility. The polar plots illustrate how the system performs when hung in free space (360˚) or half-space (180˚) in the case of a recessed speaker.

A&E SPECIFICATIONS

The loudspeaker for suspended lay-in tile ceilings shall be Lowell Model LT2-810-72-BB. The 2×2 assembly shall directly replace a 2×2 ceiling tile. Each unit shall include a factory-mounted driver mounted to a subplate and fine perforation steel grille with white powder epoxy finish.
The driver shall be 8-inch dual cone with 15W power rating. It shall have a magnet weight of 10 ozs., frequency response of 54Hz-11.6kHz (±6dB); 50Hz- 20kHz (±6.6dB) and average sensitivity of 97.9dB measured 1W/1M. The system shall include a steel backbox (.147 cu.ft. volume) with leads exiting through a metal clamp. The 25V/70V dual voltage transformer shall feature primary taps at 0.25, 0.5, 1, 2 and 5W.
The assembly shall be made in the U.S.A. with global components.

LT / LT2 SERIES OVERVIEW

Volume
Driver Specs (measured half space)

Model No.| Driver| Transformer| Taps| Enclosure| Grille| Control| Listed| * _Sensitivity_| Frequency Response        Dispersion****
---|---|---|---|---|---|---|---|---|---
LT-410-72-BB| 4″ 15W single cone| 25V / 70V| .25, .5, 1, 2, 5W| .147 cu.ft.| 1 x 2| —| —| 90.8 dB| 67Hz–16kHz (±6dB)
53Hz–20kHz (±8dB)| 170˚
LT-810| 8″ 15W dual cone| —| —| —| 1 x 2| —| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT-810-72| 8″ 15W dual cone| 25V / 70V| .25, .5, 1, 2, 5W| —| 1 x 2| —| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT-810-BB| 8″ 15W dual cone| —| —| .147 cu.ft.| 1 x 2| —| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT-810-72-BB| 8″ 15W dual cone| 25V / 70V| .25, .5, 1, 2, 5W| .147 cu.ft.| 1 x 2| —| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT-810-72-BB-VC| 8″ 15W dual cone| 25V / 70V| .25, .5, 1, 2, 5W| .147 cu.ft.| 1 x 2| Knob| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT2-810-BB| 8″ 15W dual cone| —| —| .147 cu.ft.| 2 x 2| —| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT2-810-72-BB| 8″ 15W dual cone| 25V / 70V| .25, .5, 1, 2, 5W| .147 cu.ft.| 2 x 2| —| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT2-810-72-BB-VC| 8″ 15W dual cone| 25V / 70V| .25, .5, 1, 2, 5W| .147 cu.ft.| 2 x 2| Knob| —| 97.9 dB| 54Hz–11.6kHz (±6dB)
50Hz–20kHz (±6.6dB)| 95˚
LT-830-BB| 8″ 20W coaxial| —| —| .147 cu.ft.| 1 x 2| —| —| 97.0 dB| 57Hz–14kHz (±6dB)
44Hz–20kHz (±7.6dB)| 80˚
LT-830-870-BB| 8″ 20W coaxial| 70V| 1, 2, 4, 8W| .147 cu.ft.| 1 x 2| —| —| 97.0 dB| 57Hz–14kHz (±6dB)
44Hz–20kHz (±7.6dB)| 80˚
LT2-830-T870-VB| 8″ 20W coaxial| 70V| 1, 2, 4, 8W| .8 cu.ft.| 2 x 2| —| —| 97.0 dB| 57Hz–14kHz (±6dB)
44Hz–20kHz (±7.6dB)| 80˚
LT2-830-TM16-VB| 8″ 20W coaxial| 70V| 4, 8, 16W| .8 cu.ft.| 2 x 2| —| —| 97.0 dB| 57Hz–14kHz (±6dB)
44Hz–20kHz (±7.6dB)| 80˚
LT-8A-VB| 8″ 50W coaxial| —| —| .8 cu.ft.| 1 x 2| —| UL| 90.6 dB| 40Hz–19.4kHz (±6dB)
40Hz–20kHz (±7.3dB)| 90˚
LT-8A-T870-VB| 8″ 50W coaxial| 70V| 1.1, 2, 4, 8W| .8 cu.ft.| 1 x 2| —| UL| 90.6 dB| 40Hz–19.4kHz (±6dB)
40Hz–20kHz (±7.3dB)| 90˚
LT2-8A-VB| 8″ 50W coaxial| —| —| .8 cu.ft.| 2 x 2| —| UL| 90.6 dB| 40Hz–19.4kHz (±6dB)
40Hz–20kHz (±7.3dB)| 90˚
LT2-8A-T870-VB| 8″ 50W coaxial| 70V| 1.1, 2, 4, 8W| .8 cu.ft.| 2 x 2| —| UL| 90.6 dB| 40Hz–19.4kHz (±6dB)
40Hz–20kHz (±7.3dB)| 90˚
LT2-8A-TM32-VB| 8″ 50W coaxial| 70V| 8, 16, 32W| .8 cu.ft.| 2 x 2| —| —| 90.6 dB| 40Hz–19.4kHz (±6dB)
40Hz–20kHz (±7.3dB)| 90˚

• Average SPL @ 1W/1M
  ** Conical @ 2kHz octave (–6dB)

Lowell strives to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without prior notification.
©2022 Lowell Manufacturing Co., 100 Integram Dr., Pacific MO 63069, USA / tel. 800.325.9660 / tel. 636-257-3400 / www.lowellmfg.com

References

• Lowell Manufacturing Company | Racks, Power, Audio

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