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LCT81CT Info & Installation Guide

Written by Jose Liberio Cruz

Updated at January 26th, 2026

Table of Contents

LCT 81C/T Lay-In 2' x 2' Ceiling Tile Loudspeaker

LCT 81C/T Lay-In 2' x 2' Ceiling Tile Loudspeaker

The LCT 81C/T makes installation efficient and neat by laying directly into a US-size 2' x 2' suspended tile grid system without requiring cuts or modifications to the ceiling.  Featuring higher sensitivity and better voice intelligibility than other speakers in its class, the LCT 81C/T utilizes an 8-inch dual-cone driver with a 1-inch voice coil to provide high quality sound in an easy-to-install design.  The extremely low profile depth of just four inches allows the LCT 81C/T to be installed into shallow-depth ceiling locations where other ceiling loudspeakers do not fit, such as in older buildings with low ceiling decks or in spaces where the above-ceiling areas may be obstructed by pipes or ducts.

A built-in 10W transformer allows the LCT 81C/T to be used on 70V or 100V distributed speaker lines, or the speaker can be driven directly by a low-impedance power amplifier (at up to 20 Watts continuous average pink noise; 40 Watts program power).  Adjustments are made using a convenient rotary switch on the side of the rear enclosure.

The LCT 81C/T features 96 dB sensitivity, delivering maximum sound levels and reducing costs by allowing installers to use smaller power amplifiers.  A 100-degree conical coverage pattern provides superior speech intelligibility to a wide area, providing adequate coverage with fewer speakers and saving time and money during installation.  

The LCT 81C/T expands upon a long line of JBL in-ceiling loudspeakers by seamlessly fitting into industry standard drop-ceiling grids.  This form factor makes it easier and more cost-effective for installers working with suspended ceiling.  UL 1480A and UL 2043 certifications ensure the LCT 81C/T is up to code.  A perforated white grille is built into the LCT 81C/T.

for more information about the LCT 81C/T, visit http://www.jblpro.com/www/products/installed-sound/lct-lay-in-tile-speaker/lct-81c-t

 

 

         

 

 

 

            

 

 

 

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Table of Contents

LCT 81C/T Lay-In 2' x 2' Ceiling Tile Loudspeaker

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