A PHOTOGALLERY OF A KLIPSCHORN FOLDED BASS HORN REPLICA BUILD
The photographs shown below were
taken during the assembly of a Klipschorn folded bass horn replica.
The photos are not arranged in any particular order. The project was
undertaken to illustrate the complexity of the horns construction.
Building a Klipschorn bass unit, without dedicated tooling, is a significant challenge even for an experienced
The plans used to build the horn below were from actual D-sized
blueprints that appear to be from Klipsch. They are not dated but have been
in my possession since the late 1970s. The build below deviates from the
plans in three areas, the
throat opening (drawing shows 6x13", here it is 3x13"), the thickness of the the two
panels that comprise the woofer back chamber (drawing shows 1/2",
here it's 3/4"
Baltic birch multi-ply) and the front panel (drawing specifies 1/2",
here it's 3/4").
The build is an accurate replica of the factory horn* as evidenced
by comparison of the complex impedance between the the two
using the Klipsch K33E woofer.
Note that in the build shown below, the panel opposite the woofer
access opening is stiffened by two "tabs" created by the three 90°
notches cut into the rail. The tabs, when glued to the panel
surface, provide considerable resistance to spurious resonance.
This design element, detailed in the plans used here, is not found
in either the original plans or the current factory build*.
*A photo of a factory build is shown at the bottom of
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NORTH READING, MASSACHUSETTS 01864 USA