Spherovox - Corner Folded Horn
This is a very interesting corner horn design from Spherovox. They have some very interesting products and information on their site http://www.spherovox.com/ . I have a corner horn fetish so I found this design very original. I'd like to see their scrap pile for this prototype.
* Excerpt from their site.
Low-Frequency horn loaded systems for π/2 radiation are designed employing push-push operated
dual membrane loudspeakers, closely mounted in parallel against each other. Tree Axis
Symmetrical and efficient horn mouth loading is transformed to a symmetrical and uniform
membrane cone loading. By doubling loudspeaker diaphragm, and respectively horn throat,
lower horn cut-off frequency was achieved with the same extension rate, besides acoustic
power doubling. Two such corner horn systems could be stacked together for quarter space
π-loading, with important usage in front-of-stage subwoofer applications. Four horn systems
are grouped together over the floor or on the ceiling for 2 π-radiation. Finally, 8 such
systems could be united for full space low-frequency radiation.
Placing reduced size horns in room corners for better driver loading at low frequencies has been known even before 1940s, when Paul Klipsch patented his Klipschhorn [1]. This horn is driven by a single loudspeaker and is by far the most copied design, probably still in production. Well known is also the double push-push loudspeaker structure [US Patent 4,923,031], which has also a double loudspeaker pair version.
Most developments, to our knowledge, have a common setback – the inability to achieve the necessary for many practical applications multiple arrangement capability, keeping at the same time spherical space radiation symmetry. A further drawback of most of the known low frequency horn loaded systems is that they don’t exhibit symmetrical loudspeaker membrane loading, which vastly shortens the operational life of the horn systems.
Placing reduced size horns in room corners for better driver loading at low frequencies has been known even before 1940s, when Paul Klipsch patented his Klipschhorn [1]. This horn is driven by a single loudspeaker and is by far the most copied design, probably still in production. Well known is also the double push-push loudspeaker structure [US Patent 4,923,031], which has also a double loudspeaker pair version.
Most developments, to our knowledge, have a common setback – the inability to achieve the necessary for many practical applications multiple arrangement capability, keeping at the same time spherical space radiation symmetry. A further drawback of most of the known low frequency horn loaded systems is that they don’t exhibit symmetrical loudspeaker membrane loading, which vastly shortens the operational life of the horn systems.
For more information http://www.spherovox.com/Corner_Folded_Horn_Designs.php
