KLH Model Five Manual page 3

INTRODUCTION
Thank you for selecting the KLH Model Five loudspeaker. KLH's iconic styling, leading-edge technology, use of the finest
materials and sophisticated quality control will provide you with unparalleled listening pleasure for many years to come.
To achieve the level of music reproduction these speakers are capable of providing requires care in installation and operation. If
you are new to the audiophile world, please take the time to read this manual and follow all instructions. You will be happy you
did. If you have further questions, please contact your authorized KLH
KLH AND MODEL FIVE HISTORY
KLH Audio was established in 1957 by Henry Kloss, Malcolm Low & Josef Hofmann. Henry Kloss first made his name as part
of Acoustic Research with the introduction of the AR-1 and its patented acoustic suspension system that revolutionized the
high-fidelity industry. Henry Kloss later left Acoustic Research to start KLH, and immediately began marketing his own acoustic
suspension loudspeaker designs. The original KLH Model Five loudspeaker was first introduced in 1968, and was one of the
best-selling speakers throughout the late1960's and early 70's.
KLH re-issued the famous Model Five during the spring of 2021. This new three-way loudspeaker features updated cosmetics,
as well as all the major advancements in transducer design that have occurred over the last 50 years. But the original acoustic
suspension philosophy, cabinet construction and size all remain intact, thus maintaining the performance and appeal the
loudspeaker enjoyed when it was first introduced.
ACOUSTIC SUSPENSION
First introduced in 1954, the acoustic suspension principle has long been regarded as the most accurate of all the loudspeaker
designs available. Edgar Villchur and Henry Kloss worked together to bring the original AR-1, and several later models, including
the well known AR-3, to market. Several brands, including KLH, would adopt the acoustic suspension principle and use it in their
loudspeakers designs for many years to come. This design principle dominated the speaker market well into the 1970's.
In an acoustic suspension design, the volume of air inside the enclosure serves as a cushion of air, or air spring, to provide
a restoring force for the woofer cone. The air inside the enclosure essentially becomes the dominant part of the woofer's
suspension. Since the volume of air inside the enclosure is more linear than the mechanical parts of the woofer's suspension,
this enables the woofer's diaphragm to move in a more linear fashion. This enables the driver to operate at higher excursions
with less distortion than more traditional bass-reflex type systems. Acoustic suspension systems are regarded all over the world
for their greater accuracy, tighter bass transients and exceptional bass resolution and texture.
DEDICATED MIDRANGE DRIVER
Model Five Manual 12 pages rev 1.indd 3 Model Five Manual 12 pages rev 1.indd 3
dealer or call out toll free number at 1-833-554-8326.
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The KLH Model Five is a 3-way design featuring a dedicated midrange driver
housed in its own internal enclosure. It's the midrange driver's responsibility to
handle the most significant, middle part, of the audio spectrum. This portion of the
audio band contains the vocal and musical instrument fundamentals which are
most familiar to the human ear; and where accuracy, or inaccuracies, are most
easily detected. In a three-way design, having a dedicated midrange means the
driver can be optimized for this specific use, since it doesn't have the additional
burden of reproducing lower & higher frequencies in the audio band. This results
in truly remarkable clarity of vocals & instruments with less distortion.
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