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MartinLogan Installer Series IW5-LCR

Multi-purpose in-wall home theater speaker

Item # 839IW5LCR

This versatile in-wall speaker can be installed vertically or horizontally in your home theater system.

This versatile in-wall speaker can be installed vertically or horizontally in your home theater system.

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Item # 839IW5LCR

In stock
$349.99 each

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About the MartinLogan Installer Series IW5-LCR

Versatile in-wall sound from MartinLogan

Our customers love the style and performance of MartinLogan's bookshelf and floor-standing speakers. The esteemed hi-fi company also makes great-sounding custom-integration speakers, like the Installer Series IW5-LCR.

Versatile in-wall sound from MartinLogan

Our customers love the style and performance of MartinLogan's bookshelf and floor-standing speakers. The esteemed hi-fi company also makes great-sounding custom-integration speakers, like the Installer Series IW5-LCR.

This LCR (left, center, right) speaker can be installed either vertically or horizontally, making it an excellent choice for a seamless front soundstage in a surround sound system. Its pair of 5-1/2" woofers and centrally mounted 3/4" tweeter deliver balanced, full-range sound that's ideal for movie soundtracks, dialogue, and special effects.

DIY installation 

If this is a do-it-yourself install, check out our guide to installing in-wall speakers, along with our selection of in-wall speaker wire. You can paint the included magnetic grille to have your speaker blend in with your décor.


Product highlights:

  • ideal for use in a stealthy home theater or in-wall stereo music system
  • install horizontally as a center channel, or vertically as a left- or right-channel speaker
  • 3/4" titanium dome tweeter
  • dual 5-1/2" mineral-filled polypropylene woofers
  • frequency response: 60-20,000 Hz (±3 dB)
  • recommended amplifier power: 15-70 watts
  • sensitivity: 89 dB
  • impedance: 8 ohms
  • ultra-thin bezel and paintable magnetic grille provide seamless integration into your décor
  • cutout dimensions: 11-5/8"W x 8-1/4"H
  • overall dimensions: 12-11/16"W x 9-5/16"H
  • mounting depth: 3"
  • weight: 5.9 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # IW5LCR

What's in the box:

  • In-wall loudspeaker
  • Grille
  • User's Manual
  • Cutout Template

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More details on the MartinLogan Installer Series IW5-LCR

Stacey B.

Features & specs

Quantity in Package Single
Tweeter Hard-Dome
Aimable Tweeter No
Woofer Composition Mineral-filled poly
Woofer Surround Rubber
Moisture-resistant No
Connector Type Spring post
Bi-Amp Inputs No
Built-in Back-box No
Tweeter Size 0.75
Midrange Size N/A
Woofer Size 5.5
Speaker Shape Rectangle
Cutout Width 11.625
Cutout Height 8.25
Power Range (Watts) 15-70
Sensitivity 89 dB
Impedance (Ohms) 8
Frequency Response 60-20kHz
Parts Warranty 5 Yrs w/ Registration
Labor Warranty 5 Yrs w/ Registration

Product Research


Installer Series: Manufactured to the highest standards of quality and performance, the new Installer Series by MartinLogan is a line of affordable, high-performance, ultra-low-profile custom installation in-wall and in-ceiling speakers. Featuring titanium dome tweeters and mineral-filled polypropylene drivers, each model comes with a remarkably robust mounting-lock system and paintable micro-perf, bezel-free grilles for a nearly invisible installation.

LCR Configuration: The MartinLogan Install Series IW5-LCR is an in-wall LCR-type loudspeaker that can be used for left, center, or right channels in a home theater application. Its the perfect solution for an in-wall center-channel speaker.

Two-Way Driver Design: The IW5-LCR in-wall loudspeaker utilizes a two-way driver design with a 0.75" titanium dome tweeter and two 5.5" mineral-filled poly cone woofer. The titanium dome tweeter is ferrofluid damped and cooled for smooth high-frequency performance with amazing clarity across a wide listening area. The mineral-filled polypropylene cone bass/midrange drivers feature a robust computer-optimized ferrite magnet and a high-power motor structure to deliver detailed midrange performance and clean, extended bass response.

Precision Crossover: Carefully hand-built using only the finest polyester capacitors and air-core coils, Installer Series crossovers employ MartinLogan's proprietary Vojtko topology for extremely low distortion and seamless driver integration. This precision-tuned network preserves even the most microscopic sonic nuances while handling the full dynamics of any source. 

Spring-Loaded Binding Posts: Spring-loaded binding posts feature a larger wire access hole and connect via banana plug (single/dual), pin-connector, or bare speaker wire (up to 12AWG). The spring-loaded binding posts are gold-plated for excellent signal transmission and resistance to corrosion.

Micro-Perforated Grilles: MartinLogan's Installer Series speakers feature ultra-low profile, paintable, micro-perforated grilles with no visible bezel for a near invisible integration into amost any wall. A series of powerful magnets hidden inside the speaker quickly secure grilles into place, reducing the risk of warping or damage during installation. The outer frame of the speaker with the grille installed measures 12.6875" (w) x 9.3125" (h) x 0.3125" (d).

Robust Mounting-Lock System: A simple, yet robust mounting-lock system allows quick, trouble-free installation. Pocketed screw holes help hold the drill steady, making installation a snap. When not in use, mounting locks are held securely within a self-contained housing. When moved into place, they couple the chassis firmly to the wall, increasing the rigidity of surfaces. If ever removed, the locks retract and latch back in their housings. Each speaker includes a full-size installation template featuring quick-reference instructions, and cut guides for marking the cutout hole. The IW5-LCR requires a rectangular cutout that measures 11.625" (w) x 8.25" (h) x 3.0" (d). There needs to be at least 1.0" around the cutout behind the wall to accommodate the seven mounting locks. The IW5-LCR can be mounted in the wall horizontally or vertically.

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