Tuesday, March 24, 2015

An Early Project: A 1/3 Scale Klipschorn

In about 1973, I built a one-third scale model of a Klipschorn.  I did not have plans, so I just guessed about dimensions.  I bought a five-inch speaker for it.  The Masonite cover over the speaker access opening was sealed with rubber cut from an old tire inner-tube.


One-Third Scale Model of "Klipschorn"
One-Third Scale Model of "Klipschorn"
Here is a photo with the speaker removed:



One-Third Scale Model of "Klipschorn"
One-Third Scale Model of "Klipschorn"
 
The second driver, mounted on a Masonite baffle, is a subwoofer removed from a Cambridge Soundworks computer sound system.  This did not work as well as the original speaker.  Here is another view of the model showing the opening into the back chamber where the speaker is mounted.


One-Third Scale Model of "Klipschorn"
One-Third Scale Model of "Klipschorn"
Here are some close-ups of the speaker back chamber showing the slot at the throat of the folded horn.


One-Third Scale Model of "Klipschorn" Back Chamber
One-Third Scale Model of "Klipschorn" Back Chamber


One-Third Scale Model of "Klipschorn" Back Chamber
One-Third Scale Model of "Klipschorn" Back Chamber
Like the full-scale original, this is made to be positioned in the corner of a room to take advantage of wall and floor reflections.  It is made of 1/4 inch plywood and glued and fastened with wire brads.

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