Wisdom Audio LS4 v2


LS4 Excite Award WinnerRESI Award LogoS90i CE Pro Best Award Finalist

Line Source Freestanding Loudspeaker

The Wisdom Series LS4 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 LS4 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 LS4 yield 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 & Dynamic
(1) 80″ Planar Magnetic Driver
Covers 8 Octaves of Clarity
Light Weight Film PEEK
FAST Acceleration

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

80Hz – 20kHz
Two-Way Planar Magnetic Driver
Outboard Active Crossover
DSP Required
2-CH’s of Amplification 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 HxWxD88” x 28.5” x 21.10” (221cm x 83.6cm x 53.6cm)


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LS4 Owner’s Manual

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Wisdom Series Brochure

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What Can Be Customized

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LS4 Drawing (PDF)

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LS4 Drawing (DWG)

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LS4 Base Drawing (PDF)

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LS4 Base Drawing (DWG)

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