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Atlantic Technology IWTS-30 LCR

In-wall Speakers

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  • Using In-wall Speakers



THX Ultra 2 Performance (It just happens to be an in-wall.)
The IWTS-30 LCR is Atlantic's top-of-the-line in-wall speaker. It's an exceptionally sophisticated speaker whose lineage traces directly to the highly regarded System 8200e. The 30 LCR is a 3-way design using an 8" woofer, dual 3 ½" midranges and Atlantic's exclusive LRT™ tweeter in an M-T-M array.

The entire M-T-M assembly rotates 90 degrees so the midranges and tweeter can be kept in the correct vertical orientation whether the speaker is installed horizontally or vertically. The assembly also can tilt up to 8 degrees, so the sound can be precisely directed at the listening position--up, down, left, or right-- regardless of where the speaker is placed in the room.

Particularly noteworthy are Atlantic's proprietary new midrange drivers. Utilizing oversized 1" voice coils and massive magnets for high efficiency, these drivers exhibit exceptionally low distortion and tremendous power-handling ability. The 30's remarkable clarity and detail is attributable in large measure to these amazing new drivers.

The 30 LCR's MDF baffle continues Atlantic's use of non-resonant baffle material for in-wall speakers, resulting in far better acoustic performance than speakers that use 'ringy' plastic or resonance-prone aluminum baffles or enclosures.

As a final touch, the 30 has three easily-accessible controls on the front panel (Boundary Compensation, HF Level, and Location) to adjust for varying placement, room acoustics, and video screen usage situations.

The required GFR-626 grille/frame assembly is packaged and sold separately, so the grilles can be installed and painted during the construction phase, and the speakers themselves can be installed later on.


  • Sonic performance rivals the best freestanding speakers
  • Mounts easily in standard 16"-on-center, 3 1/2"-deep wall construction
  • Backbox (IN-BOX-30) sold separately, required for THX-certified performance
  • Tiltable, rotatable midrange-tweeter assembly with sound-optimization controls
  • The GFR-626 grille/frame assembly (required) is packaged and sold separately for maximum installation/scheduling flexibility


Woofers: 8" (203mm) GLH* long throw woofer w/Butyl rubber surround and high power motor

Midrange: Dual 3 1/2" (89mm) GLH* midranges w/1" voice coils

Tweeter: 1' (25mm) Low Resonance Tweeter w/Neodymium magnet and Ferrofluid cooling

Configuration: 3 way, M-T-M array

Controls: High frequency Level, Location (Behind screen or free-firing), Boundary (Near wall/corner or mid-wall)

Frequency Response: 55Hz - 20kHz +/-3dB

Sensitivity: 89dB, 1 watt, 1 meter

Impedance: 6 Ohms

Crossover frequencies: 500Hz, 2200Hz

Recommended amplifier power: 25 - 200 Watts RMS

Optimum wall volume: 1.0 cu.ft.

Overall Dimensions (W x H x D): 12 5/16 x 21 5/8 x 3 7/8" (312 x 547 x 100mm)

Cutout dimensions (W x H): 11 1/8 x 20 3/8" (283 x 518mm)

New Construction Bracket (optional): IN-NC-626

Back Box (optional, but required for THX certification): IN-BOX 30 LCR (for new construction)

Weight :15 lbs. (6.9kg)


Color -
DLNA Certified No
Dimensions (WxHxD) -
Dimensions (WxHxD, metric) -
Dimensions (notes) -
Weight (lbs) -
Unit of measurement No
Power Handling (Nominal) -
Frequency Response +/-3dB 55Hz - 20kHz +/-3dB
Sensitivity (1W/m) -
Terminals No
Impedance 6 Ohms
Tweeter -
Midrange Driver -
Woofer -
Crossover Frequencies -
Crossover Type -


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