Mike Dubay Posted September 27, 2009 Author Share Posted September 27, 2009 I would like to find some 2" compression drivers that go down to 300hz and cross them over at 350, but so far I've only found some that are about $500.00 and that's just too much to pay. Keep your eyes open for me if you happen to run across any reasonable drivers. Also let me know how your $35.00 drivers sound. I'll bring my K-55-V's with me if you want to do a comparison when your project is done. -Kevin I also very interested in a head to head comparasion between K-55 and the DX-250's. I will have to have a modified cross over to account for the differences between the 8 ohm DX-250's and the 16 ohm K-55's. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 2, 2009 Share Posted October 2, 2009 Might want to keep the crossover frequency low, the DX-250 rolls off quickly afte 3k, here is a pic. That being said, I am currently using a pair in my theater, and think they sound good. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 2, 2009 Share Posted October 2, 2009 And the K-55 Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 2, 2009 Share Posted October 2, 2009 Here is the K-52-H Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 2, 2009 Share Posted October 2, 2009 Last up the K-53. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 2, 2009 Share Posted October 2, 2009 I will have to have a modified cross over to account for the differences between the 8 ohm DX-250's and the 16 ohm K-55's. Also during my testing the DX-250 has signifigantly higher spl, you may want to build a constant impedance ALK type network so you can vary the squalker output level. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 Thanks for the cool frequency response graphs. Jumping ahead, I made made my cross over points based on some comments by Mr. Crites. I ended up choosing 500 Hz and 4000 Hz, which fits well with your graphs. Working on some of my line drawings tonight. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 So here is an image of the dimension for my top cab. The novel thing is the "dog house", which allows for the rear of the cab to be inclosed, but the DX-250 driver is covered. IMG.pdf Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 More dimensions and a cut list will be forth coming. The build went well over a 4 day period. Again the MDF was screwed together with counter sunk screws and urethane glue for an adhesive. Here are the top cabs with squakers installed. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 Back view of top cabs. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 And the rear "dog house" that house the DX-250 protruding from the back panel. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 So painting and veneering weekend. Spent one day blacking out the interiors, fronts, backs, and bottoms. Used laytex flat. Second day was a long thrash, started at 7 am on a Sunday morning, and completed the veneering by 8:30 pm. You can see the two bass bin in the back ground with out their sound boards. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 Later the same week the small bases. They have t-nuts to accept adjustable legs for leveling. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 Top view of base. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 Moved the top bass cabs to the basement for finishing. The part of wood working I dislike the most, applying finish. Went with a water based polyurethane. It has a very low odor, kind like a faint cigarette odor. What is nice is that it can be used indoors, in the basement, away from the shop dust in a controlled temperature. Here is the bass bin, with the painted sound board, and af ew coats of water based urethane. (a push pull 8714 project is in the back ground) Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 A close up of the backers that retain the t-nuts for securing the woofer. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 Top cabs with squaker and tweets. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 In the back ground one of my KG4's in my work shop. What else to listen to when you are applying urethane. These were a donated pair of speakers, need some cross over repairs and recapping, but now sounding very nice. Thanks to Kevin from Flint! Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 What I'm listening to now. Quote Link to comment Share on other sites More sharing options...
Mike Dubay Posted October 2, 2009 Author Share Posted October 2, 2009 6V6 mono blocks. My first non kit based point to point hand wired PP amplifiers. Quote Link to comment Share on other sites More sharing options...
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