Clarence Posted July 18, 2006 Share Posted July 18, 2006 http://cgi.ebay.com/Vintage-Electro-Voice-Klipsch-12TRXB-T-35-Coax-Speaker_W0QQitemZ290009278740QQihZ019QQcategoryZ73372QQssPageNameZWDVWQQrdZ1QQcmdZViewItem What speakers, exactly, did Klipsch use these 2 way coax speakers in? A 12 inch woofer with a horn on the post? Absurd! Quote Link to comment Share on other sites More sharing options...
steamer Posted July 18, 2006 Share Posted July 18, 2006 none that I can think of,but ....ya never know! Greg Quote Link to comment Share on other sites More sharing options...
Seadog Posted July 18, 2006 Share Posted July 18, 2006 Looks like a 3-way to me. Why do you think it is absurd? At least the tweeter is not a DR. I may bid on it. It would be fun to experiment with. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 18, 2006 Share Posted July 18, 2006 It might have been a suggested option for the shorthorn kit. But never in any commercially available Klipsch product that I know of. It's really a pretty cool design for it's era. That would be neat for the DIY crowd. Michael Quote Link to comment Share on other sites More sharing options...
Guest " " Posted July 18, 2006 Share Posted July 18, 2006 Used in Klipsch licensed electro-voice loudspeakers enclosures would be more accurate. Quote Link to comment Share on other sites More sharing options...
Clarence Posted July 18, 2006 Author Share Posted July 18, 2006 i only thought it absurd (with a hint of sarcasm) that the seller brags in his listing that Klipsch used these in production model speakers. I am familiar with a coax setup, mostly in car audio where space is tight. however, this is the first 12 INCH driver I have ever seen with a post mounted tweeter, let alone a horn! different, yes. sound good, possibly. i would almost buy it just to play with it! i just wanted to clarify that this was not used in any of the heritage line, which would be the only klipsch speakers that could possibly use a 12 inch driver, correct? Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 18, 2006 Share Posted July 18, 2006 The shorthorn was available as a kit, had a 12" cutout and could be built up with a coaxial speaker or the deluxe version with the K1000 mid horn and a tweeter and crossover. Mine has a 15" with round coax speaker made by Jensen. (yes, you could mount a 15" behind the 12" cutout- it was in the plans) Michael Quote Link to comment Share on other sites More sharing options...
Seadog Posted July 19, 2006 Share Posted July 19, 2006 "i only thought it absurd (with a hint of sarcasm)" Sorry, I didn't catch the sarcasm []. Very cool looking speaker to me, and appears to be in good shape. I have a JBL C36 cabinet (circa 1954 or there about) with a coax driver including a horn tweet. Sounds pretty good, but a Cornwall kicks its butt! Quote Link to comment Share on other sites More sharing options...
Clarence Posted July 19, 2006 Author Share Posted July 19, 2006 for 9.99, i might buy it and build a box for it. That gain control looks pretty cool too.... Michael how big are the cabinets yours are in?? Seadog? (wondering if the seller has a pair....) EDIT is the crossover built in? must be... right? Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 19, 2006 Share Posted July 19, 2006 Mine isn't that driver at all. If you can find the specs on it, Doc could give you ft3 size. See the three terminals? That must be so you could hook up the volume control, so it's probably just a cap in there keeping the lows out of the tweeter. M Quote Link to comment Share on other sites More sharing options...
Frzninvt Posted July 19, 2006 Share Posted July 19, 2006 I have seen those drivers used in early Heresy's that were sold as bargain 2-way models. Awhile back a guy posted a photo of a Heresy with one of those drivers in it. I have the photo on my PC at home somewhere. They could have also been used in the bargain model Shorthorn's (Ortho-Drive) as suggested. Quote Link to comment Share on other sites More sharing options...
Guinness Posted July 19, 2006 Share Posted July 19, 2006 The T/S parameters can be found at http://www.geocities.com/tadgesualdo/12trxbTSparameters.html More info at.. http://www.geocities.com/tadgesualdo/12trxbmanifesto.html They require a pretty big box as a bass reflex system. Can also be used for open baffle. They have a singe cap for a first order high pass on the tweeter. The control is an L-pad for the tweeter. The wizzer cone sort of makes it a three way. Interesting speaker but I have never listened to one. Lots of info on the web. There's a nice pair also on this listing... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ih=004&item=140007112439&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1 Quote Link to comment Share on other sites More sharing options...
CaptnBob Posted July 19, 2006 Share Posted July 19, 2006 The Electro Voice 12TRXb was quite well thought of "back in the day." I understand the Music Box in Wellesley, MA., the longtime New England Klipsch dealer, used to recommend them to folks not ready to spend the bucks for Heresies. It combines the same 12" woofer structure used in the early H-1000s and H-700s with a T-35b tweeter on a single chassis. There is an internal cap to protect the tweeter - the three terminals are there to allow connecting an L-pad to back off the high frequencies. There is also a "whizzer" cone for the midrange - which is why Utah and everyone else called this type of design a "three-way" speaker. They will work OK in a Heresy sized cabinet, but are really happiest in a ported box about half again as big. They'll actually make it down to 35 hz. or so in such a configuration, if you don't ask them to go too loud. The website mentioned above is a hoot - lot of good information there too. Electro-Voice made several different variations on this theme, including 12TRX, which has a much larger magnet, an outboard crossover, and a T-35 tweeter in the middle. This driver needs a huge box, but will supposedly get down to 20 hz. in a refridgerator size box. Real efficient too. There is also a much later 12TRX-C, which is a completly different speaker with (I think) a dome tweeter co-axially mounted. EV also made the 15TRXb and 15TRX, following the same patterns as the 12s in a 15 inch format. Stay away from the very early ones with the narrow tweeter. There's a reason PWK didn't use the first generation T-35s. Quote Link to comment Share on other sites More sharing options...
Clarence Posted July 19, 2006 Author Share Posted July 19, 2006 wow, thanks for all the info, guys! I might try to build a home brew pair for garage duty... Quote Link to comment Share on other sites More sharing options...
DrWho Posted July 19, 2006 Share Posted July 19, 2006 Some of the best PA speakers out there are coax designs (ie, Tannoy) and there are very good reasons to consider such an approach. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 19, 2006 Share Posted July 19, 2006 Let me guess Doc, less comb filtering and phase cancellation due to the coaxial mounting? (how am I doing?) M Quote Link to comment Share on other sites More sharing options...
DrWho Posted July 19, 2006 Share Posted July 19, 2006 ...and a smaller cabinet [] Quote Link to comment Share on other sites More sharing options...
DrWho Posted July 19, 2006 Share Posted July 19, 2006 Check out the Synergy horn described on page 4: http://www.danleysoundlabs.com/pdf/danley_tapped.pdf Quote Link to comment Share on other sites More sharing options...
khorn51 Posted September 12, 2008 Share Posted September 12, 2008 Just picked up a pair of these mounted in (bigger than cornwall sized ) karlson cabinets with the t35 tweeters. They put out a lot o bass and sound really really good with blue note recodings. Quote Link to comment Share on other sites More sharing options...
djk Posted September 13, 2008 Share Posted September 13, 2008 Gee, nobody read the recent 'weekend reading'? PWK talks specifically about how the co-axial mounting of the tweeter increases the FMD dramatically over mounting the same tweeter on the front of the box. Here is the EV lit on how the tweeter is wired, and how to add the midrange horn at a later date: http://archives.telex.com/archives/EV/Speakers/EDS/15TRX%20&%2015TRXB%20EDS.pdf Quote Link to comment Share on other sites More sharing options...
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