CECAA850 Posted September 14, 2009 Share Posted September 14, 2009 it is- the K22 and K24 just don't have the excursion to be able to operate in a ported cabinet at any real volume. Just won't work. What about the K28? Quote Link to comment Share on other sites More sharing options...
Rockets Posted September 14, 2009 Share Posted September 14, 2009 I ported a set. I wish I had the proper measuring equipment to provide a chart, but I don't, so this review is almost worthless. What I used was a JBL 2213H, which is the high watt brother to the JBL123A found in the JBL L100a speaker. The cabinet size 23.5 X 14.25 X 13.625 is very close to that of a Heresey 23.81 X 15.5 X 13.25 so I felt comfortable that it would probably work. I also used equivalent sized port that came out of the JBL L100...you can find these often on Ebay as well. My Klipsch K-22's were blown when I bought the speakers, so I was unable to do an A/B check. At first I let the JBL run wild as in the JBL L100, but later rebuilt the Klipsch crossover and that's the way I'm running them now. It does have some bass to it, but as I said, I don't have anything to compare it to, other than my La Scalas and there isn't any comparison between those two. Yeah, I know the Heresey, may dig a little deeper, but then there's nothing left to compare. You can get a set of the JBL 123's on ebay for $100, so why not try them out? You can always resell them. Just cut another piece of plywood that you can port in case you want to go back to the original. Or you could build the Tangents... Good luck I forgot to add these links http://www.jblproservice.com/pdf/Thiele%20Small%20Parameters/Theile%20Parameters.pdf http://manuals.harman.com/JBL/HOM/Owner%27s%20Manual/L100om.pdf Quote Link to comment Share on other sites More sharing options...
DrWho Posted September 14, 2009 Share Posted September 14, 2009 it is- the K22 and K24 just don't have the excursion to be able to operate in a ported cabinet at any real volume. Just won't work. Porting actually lowers excursion in the passband. Add a simple highpass filter to control excursion below tuning and you'll have a speaker that plays lower and louder... Quote Link to comment Share on other sites More sharing options...
DrWho Posted September 14, 2009 Share Posted September 14, 2009 HIP= Heresy Industrial Ported pair for sale on ebay right now The HIP is tuned higher to allow a higher sensitivity....it doesn't even dig as low as a normal Heresy. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 15, 2009 Share Posted September 15, 2009 This is good info, glad you stopped in for suggetions. I need to get some basic Heresy II crossover info and look into adding the hi pass filter. Thanks, Dave. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 27, 2009 Share Posted September 27, 2009 After much deliberation between DBB or single driver, I chose the later, because I want to keep these somewhat portable, and use them in the shop... I mean the garage. The DBB is a little big, it would require near 8cu ft volume. Attached is a pic of the horns and drivers I plan on using for this project. Left to right Modified Fastrac Cornwall, K-24-K, APT-150 attacehed to a K-94-k Tractrix lens, K-53-K modified for attachment to a Fastrac horn. The driver layout on the board is just a guestimate for an Idea how it will look. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 27, 2009 Share Posted September 27, 2009 Seems like I didnt get much done on these today, but I did make progress, I built the pair of horns, cut the tweeter openings and managed to fine time to build a pair of stands. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 27, 2009 Share Posted September 27, 2009 My goal here is to keep the drivers as close together as possible. The Fastrac horn chosen for this project is a 410hz Fc. I intend set the crossover at 600-700hz. I am documenting all of the info if anyone is iterested in building these. This project is so easy to build. Quote Link to comment Share on other sites More sharing options...
jwc Posted September 27, 2009 Share Posted September 27, 2009 Man...this is lookin waaaay cool. jc Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 29, 2009 Share Posted September 29, 2009 Thanks JC, I am pleased with it so far. I made a few changes because I want to try this with all Heresy parts except the mid horns. Groomslakearea51 hooked me up with 2 full sets of HII drivers and one pair of like new crossover for an excellent $$$. These should be called the WAF#1, because my lady loves their appearance and size, hope they don't sound like Bose. LOL Quote Link to comment Share on other sites More sharing options...
Bill H. Posted September 29, 2009 Share Posted September 29, 2009 Disregard.............. Quote Link to comment Share on other sites More sharing options...
DrWho Posted September 29, 2009 Share Posted September 29, 2009 I looked at your design and realized it was familiar.... Is that just the horn from a CF-4? I coulda sworn it was a dual 12" design??? Quote Link to comment Share on other sites More sharing options...
Bill H. Posted September 29, 2009 Share Posted September 29, 2009 I didn't phrase that right................ Size wise it reminded me of a CF4................. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 29, 2009 Share Posted September 29, 2009 The speaker in the pic is a Epic CF-1, you are correct the CF-4 had twin 12" woofers. Epics were a nice line, great for H.T. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 30, 2009 Share Posted September 30, 2009 Installed the mid-horns this evening with a shoe horn, hammer, glue, bubble gum and a little grease. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 30, 2009 Share Posted September 30, 2009 And a closeup pic. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 1, 2009 Share Posted October 1, 2009 Got the speakers assembled and painted today, they turned out nice. My plan was to build them pro-audio style, but they went together no nicely it was a shame to cover them up. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 1, 2009 Share Posted October 1, 2009 Front view. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 1, 2009 Share Posted October 1, 2009 Sides. Quote Link to comment Share on other sites More sharing options...
thefluffy Posted October 1, 2009 Share Posted October 1, 2009 Outstanding work! I can't wait to hear your thoughts on the sound. Daniel Quote Link to comment Share on other sites More sharing options...
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