video clip of 8 inch Karlson type asymmetric projector

High Efficiency Speaker Asylum

Need speakers that can rock with just one watt? You found da place.

LOL -- $12 Sammi fullrange (2.2% efficiency) in an asymmetric projector - the vidcam's mic overloaded plus I could not get enough gain on this mp3 cut to push it like I like to push it - ha
update - used WMP's eq to raise level 6dB above what was used in the video = more fun -the rear chamber must be well sealed for drumkit at high levels ("Qtc" under small signal condition measures ~0.83) I used -3Db @ 64 and -6dB @32 on WMP as moderate highpass (relative)
Klam
Karlson's asymmetric seems to appear around 1961 and mentioned in a letter to Poppe
Jess Oliver marketed John Karlson's asymmetric projector type
Alan Weiss holds a current patent with the aperture and marketed 8" klam-projectors
Jess Oliver bio with mention of Karlson
Alan Weiss
Weiss et al US 5943431 August 24, 1999 “Loudspeaker With Tapered Slot Coupler And Sound Reproduction System” - basically a wedge-whaped asymmetric projector
waveguide for 1” compression driver View Patent
Letter from Karlson to Poppe 1961
Karlson's little KR-5 Rocket Speaker

Edits: 06/17/07 06/17/07 06/17/07 06/17/07 06/17/07 06/17/07

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Topic - video clip of 8 inch Karlson type asymmetric projector - freddyi 22:44:23 06/16/07 (0)

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