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IC-8.3/6.3 Tri-Mode In-Ceiling Speakers

2-way 8" or 6½" high performance In-Ceiling Tri-Mode speaker

IC-8.3_front_sm.jpgOur most versatile ceiling speakers ever
These speakers are trim looking, with no wide plastic bezel, for a particularly attractive, self-effacing look. But they're far more than just a virtually-invisible pretty face.The IC-8.3 and IC-6.3 TriMode™ ceiling mount speakers are the perfect high quality, multi-purpose solutions for any surround-sound or whole-house music installations where stealth is a key requirement. Their unique dual voice coil woofers and dual 1" soft-dome pivoting tweeters allow them to be configured for conventional (mono), single-point stereo, or dipole surround operation, providing the best coverage for every application.



Rated for Medium Rooms
View Room Size Ratings


IC-8.3_rear_sm.jpgIC-grill_sm.jpegUltra Thin Bezel


Optional Square Grills

Feature List

  • Can be used three different ways-as a dipole surround speaker, as a 'regular' high-power dual-tweeter speaker, and as a single-point stereo speaker
  • Perfect for when wall-mounting is not a viable option
  • 6 1/2" or 8" woofer, with dual 1" soft dome pivoting tweeters
  • Optional back box, optional New Construction Bracket 
  • Optional Square Grills sold separately
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Model IC-6.3 IC-8.3
Dimensions 9 ¼ " Diameter 10 7/8"
Mounting Hole Cut out Diameter 8", 202mm; Depth: 3 7/8 in., 98mm Diameter 9 5/8", 244mm; Depth: 4 1/2", 115mm
Required Ceiling Thickness 0.5 - 1" 0.5 - 1"
New Construction Kit IC-NC-TLC-6 IC-NC-TLC-8
In-Ceiling Back Box IC-BOX-6/8 IC-BOX-6/8
Optional Square Grills(sold separately) SQ-GRILLS-6 (9 3/8") SQ-GRILLS-8 (11")
Frequency Response 48 - 20kHz, +/-3dB 45 - 20kHz, +/-3dB
Sensitivity (1 watt/1 meter) 88dB (1 watt/1 meter) 89dB
Recommended Amplifier Power 10-125 watts RMS 10-150 watts RMS
Impedance 2 x 8 Ohms, Stereo; 1 x 4 Ohms, Mono 2 x 8 Ohms, Stereo; 1 x 4 Ohms, Mono
Woofer type 6.5" Dual VC, GLH cone 8" Dual VC, GLH cone
Tweeters 2 x 1" Silk Domes 2 x 1 inch Silk Domes
Weight 3.6 lbs. 5.25 lbs.

Atlantic Technology reserves the right to change specifications or appearance at any time without notice.


The IC-8.3/6.3 TriMode™ceiling mount speakers are a high quality multi-purpose solution for your surround and distributed audio needs. The unique dual voice coil 6.5" woofer and dual 1" soft dome pivoting tweeter design allows the speaker to be configured for mono, single-point stereo, or dipole surround (TriVector™) operation providing the best coverage for every application. The IC-8.3/6.3 are the perfect answer for background music in the dining room, multi-room sound throughout the house, or ceiling mounted speakers in a home theater. With a discrete profile combined with great sound and easy installation, there are no excuses for not having great music and special effects wherever you want them!IC-Series_Connectors_sm.jpg

The IC-8.3/6.3 features Carbon loaded mica/poly cones, rubber surrounds, high temperature voice coils, advanced computer optimized crossovers, gold plated heavy duty connectors, and simple rotating clamp mounting.

Simply put, these innovative ceiling speakers make it possible to have spectacular sound in most any room in your home while allowing superior surround field creation when there's no way to place surround speakers on the walls.

What is Tri-Mode?


The IC-6.3/8.3 TriMode™ceiling mount speakers offer amazing versatility. With today's JIT (just in time) stocking strategy, we realize that it's not always useful to have a pile of speakers collecting dust in your warehouse as you "wait for the perfect job" to install them. This is one reason we created the IC-.3 and 8.3 in-ceiling mount Tri-Mode speakers.

Tri-Mode Operating Modes

  • Conventiomal (Mono) - For broader coverage in stereo applications, the dual voice coil woofer and dual tweeters will cover a much wider area than conventional in-ceiling speakers.
  • Single-point Stereo - The speakers can be wired to deliver full stereo sound from a single loudspeaker, giving you great sound quality with only one unobtrusive round ceiling grille showing. This application is perfect for distributed audio in tight spaces like powder rooms and hallways.
  • Dipole Surround (Tri-Vector diffuse) - Wired in this manner the speaker delivers a diffuse upper midrange and high frequency sound that helps to create involving surround sound that draws you into the action. Perfectly suited for today's open floor plan homes where a traditional side surround speaker cannot be accommodated.