peshewah Posted February 17, 2010 Share Posted February 17, 2010 Kg4guy, thank you for posting the pictures. Not much room. I don't get it. It looks like it's choked down. Big driver, little hole. I'm sure if you explained it to me I would be more confused. I wake up confused. Thanks again. You do beautiful work. Good thread. I have a itch to build cornscala's or a sub. I want more. Bigger speakers. Quote Link to comment Share on other sites More sharing options...
ZombieWoof Posted February 17, 2010 Share Posted February 17, 2010 makes the woof a compression driver right ? Quote Link to comment Share on other sites More sharing options...
Invidiosulus Posted February 18, 2010 Share Posted February 18, 2010 Sort of, The throat size has a somewhat direct bearing on the frequency response of the driver when mounted on a horn. The optimum throat size for a cone driver can be calculated via the drivers TS parameters. The formula can be used as follows. St = 0.8FsQesVas St is the throat size in sq inches. Vas is in cubic feet. Going strictly by the numbers the K33 woofer is not "ideal" for use in a folded horn but in real life it works fairly well. There is some good theory to get started on in this article, Bruce Edgar Show Horn Article on Erik Forkers Website -josh Quote Link to comment Share on other sites More sharing options...
kg4guy Posted February 18, 2010 Author Share Posted February 18, 2010 Second bin done red oak trim on. Quote Link to comment Share on other sites More sharing options...
kg4guy Posted February 18, 2010 Author Share Posted February 18, 2010 Side Quote Link to comment Share on other sites More sharing options...
kg4guy Posted February 19, 2010 Author Share Posted February 19, 2010 DONE in the holding room for casa placement Quote Link to comment Share on other sites More sharing options...
kg4guy Posted February 19, 2010 Author Share Posted February 19, 2010 Modified type A crossover 500Hz-10,000Hz crossover points. Hovland and Dayton combo with KimberKaps and a ERSE Super Q inductor and a ERES aircore on the tweeter. Quote Link to comment Share on other sites More sharing options...
kg4guy Posted February 25, 2010 Author Share Posted February 25, 2010 Got the rest of the ends edged with red oak Quote Link to comment Share on other sites More sharing options...
kg4guy Posted February 25, 2010 Author Share Posted February 25, 2010 #2 Quote Link to comment Share on other sites More sharing options...
Islander Posted February 28, 2010 Share Posted February 28, 2010 makes the woof a compression driver right ? I think it helps the cone woofer sound more like the compression driver squawker and tweeter. It may also reduce the excursion/travel of the woofer cone due to higher sensitivity, reducing distortion at the same time. Less movement = less distortion, according to PWK. Quote Link to comment Share on other sites More sharing options...
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