absolve2525 Posted December 4, 2014 Share Posted December 4, 2014 Has anyone used these? I'm interested in a large format upgrade for my Khorns (currently using Volti horns with K55m on adapters). Also considering other options. Thanks Quote Link to comment Share on other sites More sharing options...
moray james Posted December 4, 2014 Share Posted December 4, 2014 as far as I am aware this driver uses the exact same diaphragm as the DH1A does the motor is smaller and lighter due neo magnets. I expect that you can save a lot of money picking up the DH1A but it does weigh a lot more at 23.5 lbs. they should sound pretty much the same. The nose cup (which extends the exit size) of a DH1A can be removed if you want to go smaller exit which is a bonus for use in a two way design. With the cup in place you have a bolt on nominal 2" exit (1.94") and with the cup off you have a bolt on 1/4" exit, there are a good number of bolt on 1.4 inch entrance drivers available. Hope this is of interest. Best regards Moray James KG4guy has a set of JBL 2360A horns for sale which are a perfect match for these drivers, the only horn that would better them would be the K402 by Klipsch. 1 Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted December 4, 2014 Author Share Posted December 4, 2014 Thanks for the reply. I'm a little unsure of how these adapters fit into the various designs. Some are removable... Does that mean it's not a true large format design? Doesn't a true two inch exit driver have, in fact, a two inch hole? I understand 1.5 inch is popular as well... I'm just confused about what determines the size. Diaphragm itself? Exit hole size? Obviously I need low end extention for use in a 400hz horn. Quote Link to comment Share on other sites More sharing options...
moray james Posted December 4, 2014 Share Posted December 4, 2014 when most people talk about a 2 inch driver they are referring to the exit size that way you know what horn it will fit. diaphragm sizes can vary. the DH1a and the driver you mentioned are the exact same size diaphragm 3 inches. the exit size is the exit size and how you get there in one piece or in tow does not make any difference so long as the machine work and geometry is all good. the would be a difference in compression between two drivers if one starts with a larger throat at the phase plug but that's the main difference. The DH1A is probably one of the most serious compression drivers with a three inch diaphragm in existence, EV rate it at being able to output ten acoustical watts over its band for 24 hours and that's more than a JBL 2226 fifteen inch woofer by the way. These are true monsters for a three inch driver. this would be an excellent choice for the crossover you want to use. If you plan to use this as a mid driver then you should also consider the four inch JBL drivers that way you have future options for a Be diaphragm. Hope this helps. Best regards Moray James. 1 Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted December 4, 2014 Author Share Posted December 4, 2014 Thanks, that does help clear things up! I haven't really had much luck finding a good set of DH1A, hence my interest in the neodymium version. Quote Link to comment Share on other sites More sharing options...
moray james Posted December 4, 2014 Share Posted December 4, 2014 www.electrovoice.com/downloadfile.php?i=1156 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted December 5, 2014 Share Posted December 5, 2014 Thanks, that does help clear things up! I haven't really had much luck finding a good set of DH1A, hence my interest in the neodymium version. Yesterday I bought a pair of DH1A's off Ebay. After I bought them they listed 8 more pair available, but I just checked the sale and they are all gone! If I come across any I'll let you know. Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted December 5, 2014 Author Share Posted December 5, 2014 Thanks, wvu80. I haven't had any luck finding them on Ebay with good phragms. Please let us know your impressions when you get them set up! Quote Link to comment Share on other sites More sharing options...
NBPK402 Posted December 5, 2014 Share Posted December 5, 2014 I purchased most of mine from http://www.ebay.com/usr/tubejunkie?_trksid=p2059210.m2749.l2754 . Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 5, 2014 Share Posted December 5, 2014 I've heard mixed reports about Jammin' Jersey, but they have six in stock @ 150 ea. Scroll down the page for EV gear. http://jamminjersey.com/speakers.php?prod=celestion Quote Link to comment Share on other sites More sharing options...
The Dude Posted December 5, 2014 Share Posted December 5, 2014 Funny I was just going to ask about this driver myself. Quote Link to comment Share on other sites More sharing options...
djk Posted December 8, 2014 Share Posted December 8, 2014 "Doesn't a true two inch exit driver have, in fact, a two inch hole?" No. Is the DH2 a 2" driver, how about the DH1? How about a JBL 2451? The DH2 has a 2" diaphragm with a 2" (nom) exit. The DH1 has a 3" diaphragm with either a 1.4" or 2" exit. The JBL 2451 has a 4" diaphragm with a 1.5" exit (or as a 2450 with a 2" exit). I would prefer small, medium, and large format descriptions for drivers, it more accurately descibes their capabilities. 1 Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted December 9, 2014 Author Share Posted December 9, 2014 (edited) Thanks for the information. How do their capabilities differ? I'm looking for higher fidelity over K55s in home use. Many on here point to 2 inch exit drivers and espouse their advantages. Edited December 9, 2014 by absolve2525 Quote Link to comment Share on other sites More sharing options...
djk Posted December 9, 2014 Share Posted December 9, 2014 "How do their capabilities differ? " In general, more area = less distortion. More rigid diaphragm = more detail. "I'm looking for higher fidelity over K55s in home use. Many on here point to 2 inch exit drivers and espouse their advantages." The K55V is very good for what it is, there are better, but at a cost (for both the horn and driver, and a different crossover as well). Cosmetics come into play too, can you live with change, or need it look stock? Quote Link to comment Share on other sites More sharing options...
djk Posted December 9, 2014 Share Posted December 9, 2014 (edited) Some comments from a prosound forum from Art Welter (doing a big shoot-out): "Considering the disparity between size, weight, diaphragm material, and design, the constraints and compromises inherent in each approach, once equalized for flat on-axis response there was surprisingly little difference in the end results of listening tests.The dual sine wave tests made hearing the differences between the drivers easiest, simply stated, the EVDH1A has more output available with less audible distortion than the other drivers. The B&C, also using a 3” diaphragm, was the next in terms of high output vs. distortion." "I was hoping to find a lighter weight replacement with sound quality exceeding the ElectroVoice DH1A, but it simply was the best sounding driver in every metric I can think of: low distortion, extended bandwidth, high output capability, and durability with prolonged unit to unit consistency.""Of course, if any manufacturer’s would like to send me pairs of free compression driver production samples to evaluate, I’ll be happy to re-evaluate my last conclusion upon finding a driver with better overall performance than the EV DH1A or DH1AMT. Until then the ten DH1AMT and single DH1A drivers I own will remain in their present cabinets." Edited December 9, 2014 by djk 1 Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted December 9, 2014 Author Share Posted December 9, 2014 Very interesting! It looks like those EV are hard to beat for the money. I think I recall there being two different OEM diaphragm thicknesses available? Is one more desirable for home use? Quote Link to comment Share on other sites More sharing options...
djk Posted December 10, 2014 Share Posted December 10, 2014 The 1.5 mil version is designed to be used above 1Khz (in PA), the 2mil version, 500hz. The 1.5mil version sounds fine at 750hz on the HR90/24dB, I have not tried it on a larger horn (crossed lower). Quote Link to comment Share on other sites More sharing options...
wvu80 Posted December 10, 2014 Share Posted December 10, 2014 (edited) Very interesting! It looks like those EV are hard to beat for the money. I think I recall there being two different OEM diaphragm thicknesses available? Is one more desirable for home use? I found this reference to a useful thread on DH1A diaphragms: https://community.klipsch.com/index.php?/topic/144127-re-titanium-diaphragms-for-k63kn-in-cf34-ping-djk/ I'm still mulling over what to do with my DH1A's now that I have them. They are not the simple drop-in upgrade I was hoping for, due to my ignorance with various CD's. These have a 4" bolt hole pattern, my CF-4 uses a screw-in type, both 2" exit. I can upgrade my CF-4's, I can hold them for a DIY build, or I could sell them for what I have in them. I got them for about market value, nothing special, but nothing overpriced, either. Mr. Absolve, are you looking for the 16 ohm models, or the 8 ohm models for your needs? Edited December 10, 2014 by wvu80 Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted December 10, 2014 Author Share Posted December 10, 2014 Thanks DJK, looks like you have a sweet 2-way setup. WVU80, I'm looking for 16 ohm at the moment since that's what my crossovers are set up for. Which are yours exactly? Quote Link to comment Share on other sites More sharing options...
wvu80 Posted December 10, 2014 Share Posted December 10, 2014 My DH1A's are listed as 6 ohm. First of all, my CF-4's already sound pretty darn good. They produce an intensity of sound that is very close to live, especially for brass. Like many here, I like the idea of "next level" good, and I have it on good authority that better drivers are out there. And like most Americans, I like to put my thumb print on things, to make it unique, to make it mine. OTOH I don't want to waste money. If I have $500 Klipsch speakers and hot rod it with $500 of upgrades, even though it may sound better, they are still only worth $500 at resale time. Those are the issues I am mulling over. At the moment, with some help from some other Klipschites, I am really wanting to put in the time and money to upgrade my enclosure to accommodate those beast-sized drivers. Quote Link to comment Share on other sites More sharing options...
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