ram87007 Posted August 13, 2007 Share Posted August 13, 2007 HI Everyone Has anyone done a DIY SUB using Klipsch 18" Pro drivers????? I have Cornwall mains and need something to keep up with them size means nothing BIGGER IS BETTER when it comes to SUBS Quote Link to comment Share on other sites More sharing options...
Jay481985 Posted August 13, 2007 Share Posted August 13, 2007 pro driver subwoofer make for poor subwoofer.... just because it is a 18 inch woofer does not mean it can go as deep and as low. A pro speaker usually does a full range or a big range, much larger than just the 0-80 hertz range. Quote Link to comment Share on other sites More sharing options...
DrWho Posted August 14, 2007 Share Posted August 14, 2007 Not DIY, but Klipsch Pro Cinema has just what you're asking about: http://www.klipsch.com/products/details/kpt-884.aspx Keep in mind that the posted specs were taken in 1/2 space. You can expect a lot more output down low in an 1/8 space environment. I believe these cabs are tuned to 19Hz? So worst case scenario you can EQ out to 19Hz, but I really don't think that will be necessary. Just outta curiosity, are you interested at all in tapped horns? Quote Link to comment Share on other sites More sharing options...
TheEAR Posted August 14, 2007 Share Posted August 14, 2007 What DrWho pointed will do the trick. If you will build a sub then seek the AVSforums...there is a DIY section there. The sub pointed by DrWHO should keep up to where your hearing fails,it can belt serious SPL. Big 18" in a mighty big box,vented...tuned low.That is the recepie for BIG OUTPUT down DEEP. Quote Link to comment Share on other sites More sharing options...
dakayus Posted August 17, 2007 Share Posted August 17, 2007 What type of surroundings does that thing have? It looks like a regular woofer driver as opposed to a meaty JL or Velodyne. Either way I'd probably just buy a JL driver off of craigslist or ebay and then just make your own custom fathom. Quote Link to comment Share on other sites More sharing options...
DrWho Posted August 17, 2007 Share Posted August 17, 2007 What type of surroundings does that thing have? It looks like a regular woofer driver as opposed to a meaty JL or Velodyne. Either way I'd probably just buy a JL driver off of craigslist or ebay and then just make your own custom fathom. A "meaty" JL? The accordian surround is far stronger and more linear than rolled rubber. The only downside is the difficulty to achieve that same performance with larger excursions, but that's not an issue when you have 2.5x the radiating surface area (in other words, 2.5x less excursion). And due to the lower excursion requirements, the frequency intermodulation distortion will be dramatically reduced. You'll get the same grunt output, but without the chuffing. The higher sensitivity also means less power compression and less thermal nonlinearities. The rolled rubber surround has certainly come a long way in making possible large excursion drivers, but large excursion is nowhere near the ideal approach to low distortion bass reproduction. The accordian surround is simply a better solution to low excursion drivers, which is where the low distortion output is going to come from (at the expense of increased radiating surface area for the same bandwidth and output). And for what it's worth, the accordian surround has also come a long way in increasing its excursion capabilities to. All that to say, the type of surround is certainly nowhere near sufficient to determine the quality of the subwoofer. In this case, it's probably an argument that the Klipsch is better [] Quote Link to comment Share on other sites More sharing options...
dakayus Posted August 19, 2007 Share Posted August 19, 2007 Oh! I never knew that one. I just figured the woofer seemed more of a high bass (in frequency) reproductor and really didn't think that it would produce much lower spl. Is the surrounds made of paper that's beveled a few times on the edges? Quote Link to comment Share on other sites More sharing options...
DrWho Posted August 19, 2007 Share Posted August 19, 2007 It might be paper, but it could also be some rubber or foam hybrid or something. The rolls in the accordian seem too large to be a classical paper implementation. In other words, I don't know [] Quote Link to comment Share on other sites More sharing options...
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