Drawing of the Klipschorn <a href="https://en.wikipedia.org/wiki/loudspeaker" class="extiw" title="w:loudspeaker">loudspeaker</a> manufactured by <a href="https://en.wikipedia.org/wiki/Klipsch_Audio_Technologies" class="extiw" title="w:Klipsch Audio Technologies">Klipsch Audio Technologies</a> from 1948. The Klipshorn is a high fidelity speaker system whose notable feature was its folded bass horn system, which is open at the back and is designed to use the walls and floor in the corner of a room as part of the horn structure, to achieve better bass response.  The speaker is designed to be placed in the corner of the room.
Unknown author<span style="display: none;">Unknown author</span>
1948-10
Retrieved March 30, 2015 from <a rel="nofollow" class="external text" href="http://www.americanradiohistory.com/Archive-Radio-Electronics/40s/Radio-Electronics-1948-10.pdf">"New Trends in Loud Speakers" in <i>Radio-Electronics</i> magazine, October 1948, p. 31</a> on <a rel="nofollow" class="external free" href="http://www.americanradiohistory.com">http://www.americanradiohistory.com</a>