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Ceiling Speakers

LIS - Lay-in Speaker Packages with 8" Cone Speaker

LIS8T / LIS8+T / LIS8XT
The Penton Audio LIS Series full-range, lay-in speaker packages are economical one-piece assemblies designed to speed installation in traditional 2' x 4' and 2' x 2' suspended tile ceilings. Conservatively rated each unit combines a speaker, 70.7/25-volt transformer and enclosure, all attached to grid assembly that also serves as a tile bridge.

The LIS Series exclusives wedged support lines up the grille with the tile. It is not just pleasing to the eye, but is convenient for the installer. Enclosure has 6" five-conductor wire exiting the housings through the top.

Models use different assemblies; LIS8T and LIS8+T employing twin-cones and a 5-watt transformer. (The LIS8+T has a 15-watt speaker with a 10-ounce magnet.) An 8-watt transformer is stock on the coaxial LIS8XT which has a treated cone with rubber surround and a post-mounted, 3" paper-cone tweeter having a 1/2" moving coil.
LIS8T / LIS8+T / LIS8XT
  • One-piece Assembly Saves Installation Cost
  • Choose Between 5, 10-ounce Twin Cone or Coaxial Model
  • Grille Matches Ceilings and Fixtures
  • Dual 70.7/25-volt Xfrmr for Use in Most Applications
LIS8T / LIS8+T / LIS8XT
CONE SPEAKER SIZE: 8" (203 mm)
FREQUENCY RESPONSE: LIS8T: 60-20,000 Hz +/- 6 dB
LIS8+T: 60-20,000 Hz +/- 6 dB
LIS8XT: 50-16,000 Hz +/- 6 dB
POWER HANDLING (RAW DRIVER): LIS8T: 10 watts
LIS8+T: 15 watts
LIS8XT: 20 watts
SPL @ 1W 1M: LIS8T: 95 dB
LIS8+T: 96 dB
LIS8XT: 94 dB
DISPERSION @ 2 KHZ (6 dB DOWN): LIS8T: 100 degrees
LIS8+T: 100 degrees
LIS8XT: 96 degrees
DIRECTIVITY Q FACTOR @ 2 KHZ LIS8T/LIS8+T: 6.90
LIS8XT: 6.80
CONE MATERIAL AND SURROUND: LIS8T/LIS8+T: Self-edged Paper
LIS8XT: Treated Paper
TRANSFORMER MAX INSERTION LOSS: LIS8T/LIS8+T: 1.5 dB
LIS8XT: 0.8 dB
CONE DESIGN: LIS8T/LIS8+T: Twin Cone
LIS8XT: Coaxial
LIS8XT TWEETER TYPE: 3" Paper Cone with 1/2" Moving Coil
CONNECTION: Via Wire Nuts
70.7-VOLT TRANSFORMER TAPS LIS8T/LIS8+T: 5, 2, 1, 0.5, 0.25
LIS8XT: 8, 4, 2, 1, 0.5
70.7-VOLT TRANSFORMER IMPEDANCE: LIS8T: 1K, 2.5K, 5K, 10K, 20K
LIS8+T: 1K, 2.5K, 5K, 10K, 20K
LIS8XT: 625, 1.25K, 2.5K, 5K, 10K
25-VOLT TRANSFORMER TAPS: LIS8T/LIS8+T: 5, 2, 1, 0.625, 0.25
LIS8XT: 8, 4, 2, 1, 0.5
25-VOLT TRANSFORMER IMPEDANCE: LIS8T: 125,312, 625, 1K, 2.5K
LIS8+T: 125, 312, 625, 1K, 2.5K
LIS8XT: 78, 156, 312, 625, 1.25K
TRANSFORMER TAP CHANGE: Five-conductor Plenum-rated Wire
BAFFLE MATERIAL: ABS with Molded-in UV Inhibitor
MAGNET WEIGHT: LIS8T: 5.34 oz
LIS8+T/ LIS8XT: 10 oz
FINISH Non-reflective White Powder-coated Epoxy Paint
APPROVALS: CE
DIMENSIONS L-W-D; INCH (MM): 23.74 x 12.84 x 4.53 (603 x 326 x 115)
NET WEIGHT LBS (KGS): LIS8T: 9.07 (4.12)
LIS8+T: 9.62 (4.37)
LIS8XT: 10.26 (4.66)
LIS8T / LIS8+T / LIS8XT
This family of products is for lightning-fast installation. When mounting in a traditional 2' x 2' or 2' x 4' dropped ceiling, only one perpendicular cut to the acoustical tile is needed.

The LIS Series is ideal for voice transmission, music and signal reproduction. Use these in commercial locations including offices, banks, educational institutions, restaurants, hotel/motels and other industrial/institutional/governmental applications where precise transmission of audio is required.