Wisdom Series LS4m


RESI Award LogoLS4 Excite Award WinnerLS4 CEDIA Manufacturers Excellence Award Finalist

Line Source On-Wall Loudspeaker

The Wisdom Series LS4m is the latest planar magnetic thin-film technology and represents an uncompromised engineering effort to achieve the ultimate in music and film sound reproduction. With 80” of Planar Line Source, it is ideally suited for installation behind an acoustically transparent screen, as a main speaker, or surround.

A single LS4m is capable of reproducing sound pressure levels in excess of 130 dB at 12’. The 80-inch tall line source will provide seamless timbre matching and uniform dynamic expression throughout any listening space. The LS4m yields breathtaking performance including low distortion, detail, dynamic range, transparency, horizontal dispersion, sound stage imaging, and maximum output capability.

Eliminate Floor and Ceiling Reflection

The line source design eliminates floor and ceiling reflection while distributing sound levels uniformly across the width of any room

Power Over Distance

Line source provides a much better power constituency than a point source. This is a great benefit when designing a large modern open-floor living space as well as multitiered theaters.

Key Features

Eliminate Floor and Ceiling Reflection
Enhance Clarity
More Power Over Distance
Share Experience

Highly Detailed & Dynamically Accurate
(1) 80” Planar Magnetic Driver
Covers 8 Octave of Clarity
Light Weight Film PEEK
FAST Acceleration

Available as In-Wall LS4i
Available as Free-Standing LS4
Stackable LS4i
Custom Colors Available LS4 and LS4m

80Hz – 20kHz
Two-way Planar Magnetic Driver
Outboard Active Crossovers (DSP Required)
(2) Channel of Power Amplification per Loudspeaker Required


Frequency Response80Hz – 20kHz ± 2dB relative to the target curve
Impedance, Tweeter4.25 ohms
Impedance, Midrange/Bass4.25 ohms
Sensitivity100 dB / 2.83 V / 1m
Shipping Weight550 lbs. (250 kg)
Dimensions HxWxD80.55” x 28.5” x 11.83” (204.6cm x 72.4cm x 30.5cm)


PDF File Icon

LS4M Owner’s Manual

PDF File Icon

LS4M Drawing (PDF)

DWG File Icon

LS4M Drawing (DWG)

PDF File Icon

Wisdom Series Brochure

PDF File Icon

What Can Be Customized

Related Products