oscarsear Posted September 16, 2005 Share Posted September 16, 2005 Looking forward to the prospect of changing out the mid-range horns and drivers on my Klipschorns. Looking very drooly at Trachorn configurations and AlK's crossover. Now I'm asking for input on the compression driver for this "maybe" project. The Selenium D405TI and University SA-HF have been advanced to me already. Is $$ an issue??? You bet...but that's my problem, not yours. Tell me the finest you know of and I'll have to figure out the rest.[<)] Thnx Quote Link to comment Share on other sites More sharing options...
DrWho Posted September 16, 2005 Share Posted September 16, 2005 How bout the JBL 2446 on the 2380a horn? I've also had my eye on the Selenium D408Ti mounted to the Selenium HM4750 Horn as well. You should also check out B&C as well as Beyma (who both have some good offerings as well). 1 Quote Link to comment Share on other sites More sharing options...
TBrennan Posted September 16, 2005 Share Posted September 16, 2005 Best midrange I ever heard was Altec 288Ks on 1005 tar-filled horns. Now that was with them working in conjunction with Altec 515Bs in 825 bottoms. So you could mod your Khorns by changing out the mid horns and drivers for the 288s and then later change the bassbin for the 825. Then you could change the tweeters for some Fostexes or JBLs. Quote Link to comment Share on other sites More sharing options...
D-MAN Posted September 16, 2005 Share Posted September 16, 2005 Some things to note: the Selenium is a 2" throat driver, and the Trachorn is a 1" throat. So that particular combination is not going to work, however a smaller throat driver CAN work in a larger throated horn. First, choose the mid horn you want, then select a driver to match that. DM Quote Link to comment Share on other sites More sharing options...
oscarsear Posted September 16, 2005 Author Share Posted September 16, 2005 To assist better I'm looking at getting the 21", 400hz woodhorns from Martinelli. They can be had in the trachorn "X" pattern or not and will be custom made to fit any particular throat size of the driver. I already run the JBL 2404 super tweets. It's a rather daunting and exciting problem to gnaw on. Quote Link to comment Share on other sites More sharing options...
D-MAN Posted September 16, 2005 Share Posted September 16, 2005 If you are up for the Martinelli wood horns, I would say go for the BMS 4590 coax driver, by all means. DM Quote Link to comment Share on other sites More sharing options...
Deang Posted September 17, 2005 Share Posted September 17, 2005 Don't forget what Dennis said about that Coax. A laserbeam treble might not be all that much fun. Besides, he's already running some of the best tweeters money can buy. Unless you have a pretty big room, or listen at very high sound pressure levels (or both) -- I'm not so sure a two inch driver is necessary. That turns into a lot of money, and you're not going to be able to keep the tophat of the Klipschorn intact. The Trachorn gives you a half an inch over the K-400/401 in the throat, and a much smoother launching point from the mouth. I don't know very much about horns -- but I know what sounds good. I think the Trachorn is a big jump forward. The Trachorn/K-55 combo also lets you go down to 300Hz -- which really helps out the bass-bin. Quote Link to comment Share on other sites More sharing options...
michael hurd Posted September 17, 2005 Share Posted September 17, 2005 Djk mentioned the community M200 driver for 400-4khz, due to it's low compression ratio, it has less distortion than a k-55 / 400(∨ 401) combo. It however requires a 2" throat horn, rather than the 1" k-400/401. Diy folks could modify a k-401 to accept a 2" throat driver, you need to cut the horn shorter, and fabricate a mount for the driver, and attach it to the horn with an adhesive. Quote Link to comment Share on other sites More sharing options...
Deang Posted September 17, 2005 Share Posted September 17, 2005 BEC trace comparing the M-200 on the shortened K-400 with the K-55-V on the unmodified K-400. You need a JBL 2328 adapter, a bandsaw, and some epoxy. I wanted to try this mod, but gave up on trying to find the adapters. The trace also took some of the wind out of my desire to try it. Once the Trachorn became available, I threw in the towel. Quote Link to comment Share on other sites More sharing options...
djk Posted September 17, 2005 Share Posted September 17, 2005 Things are not always what they seem. A JBL 2" on the 2380A measures fantastic, but doesn't sound very good. A K400 with a JBL 2" sounds an order of magnitude better than a K55, but the M200 sounds even better. The tweeter needs to be crossed at 3.9Khz for best results with the M200. Several friends of mine have sold their JBL 2" after listening to the M200. There were on a variety of horns, and the JBL 2404 was a popular tweeter choice. Most of these people tri-amp. One friend using the M200 on a K400 switched to the TAD4001. He said he could live with either, and in certain respects the M200 sounded better. Anybody a glutton for punishment? I'll make you a heck of a deal on some 2380A! Quote Link to comment Share on other sites More sharing options...
DrWho Posted September 17, 2005 Share Posted September 17, 2005 wait, is the 2380 the one that narrows the vertical dispersion in an attempt to boost the Higher frequencies? I've heard that his always has bad results. Quote Link to comment Share on other sites More sharing options...
homemade Posted September 17, 2005 Share Posted September 17, 2005 I'd be curious how a pair (to increase efficiency by running them at 4ohm) of Audax 7inch high efficiency cone driver (99.6 efficiency) would compare. I'm using one in my homebuilt khorn and it mates up efficiency wise pretty close because I'm using an 8ohm bass driver. I think they are a suberb midrange driver but I have no experience with the khorn midrange horn sound. Quote Link to comment Share on other sites More sharing options...
djk Posted September 18, 2005 Share Posted September 18, 2005 No, the 2380A sounds bad because of the narrow vertical slot that increases horizontal dispersion (and causes the CD behavior of HF roll-off). A stacked pair of Audax PR17 will work fine as mids for the Klipschorn, but you will go broke buying a set of four and the 400hz 18dB network parts (about $500 for the drivers and the network parts). The Selenium D405 (a 300-7,000Hz, phenolic diaphragm, 4" coil, 2" exit driver) is only $86 right now. Quote Link to comment Share on other sites More sharing options...
homemade Posted September 18, 2005 Share Posted September 18, 2005 Perhaps the Audax PR17 is available in a 4ohm version and only one per speaker would be needed. I've seen another manufacturer offer a similiar driver for around $50 I believe (perhaps Eminence?) What's the opinion of a midrange cone driver like this compared to a horn loaded one? No resonance problems, etc. BTW: I've used my PR17 with a 12db crossover at 400hz with 200 watt amps without any problems but than again I don't keep it turned up for any length of time-only as long as my ears can take it! I suspect my ears go into overload before the driver does in a smallish room. Quote Link to comment Share on other sites More sharing options...
hwatkins Posted September 19, 2005 Share Posted September 19, 2005 I have to agree on the 2446 and 2380a combo being a bit odd to the ear (seems to make your listening sweet spot smaller), however, the JBL 2446 is a darn fine driver that may need a different horn - Martinelli makes really pretty stuff that may work here. It should get low enough for a good Xover point. The JBL 2404 is darn sweet and I will continue to recommend it. I have built a pair of JBL speakers with 2404, 2426 w/2370a and 2521 in a ported bass bin (other than the 2404 I was a bit more vintage). I am quite pleased and would put it up against several of our favorites here. Quote Link to comment Share on other sites More sharing options...
dragonfyr Posted September 19, 2005 Share Posted September 19, 2005 I wish the 2404 came with a lens featuring a more controlled/higher Q dispersion pattern then the 100 x100 degree lens! Quote Link to comment Share on other sites More sharing options...
sunnysal Posted September 19, 2005 Share Posted September 19, 2005 "I wish the 2404 came with a lens featuring a more controlled/higher Q dispersion pattern then the 100 x100 degree lens!" that sounds like the 2405! check it out. re:mid range compression drivers, please do not forget to check out the following: Altec 290 JBL 2485J BMS H4591 the BMS can be bought new for less than $500 THE PAIR regards, tony Quote Link to comment Share on other sites More sharing options...
linkalley Posted September 19, 2005 Share Posted September 19, 2005 hey!!! djk!!! where can you buy the d 405 for 86.00??? link in ok. land Quote Link to comment Share on other sites More sharing options...
djk Posted September 20, 2005 Share Posted September 20, 2005 "hey!!! djk!!! where can you buy the d 405 for 86.00???" As a dealer from Martin. Quote Link to comment Share on other sites More sharing options...
ZAKO Posted September 20, 2005 Share Posted September 20, 2005 Link....You look silly in a cowboy hat...Your nose will still get sunburned. The TAD 4001 is still king for mid range clarity as a Klipsch mod. Link has the deep pockets. let him explain its positive qualities. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.