Sid K Posted January 7, 2017 Share Posted January 7, 2017 Hi Everyone, Has anyone had experience with this type of combination? General input would be great also. I'm currently about to do this combination/upgrade Quote Link to comment Share on other sites More sharing options...
Marvel Posted January 7, 2017 Share Posted January 7, 2017 I've only had the k55 attached to the k400 horn, using 2A3 amps. These were in a pair of '89 LaScalas. The mids were pulled down a little, for what seemed to me a better tonal balance. I don't listen very loud, 90db is getting up there. It was a magical combination. I never took measurements, but my ears were quite satisfied with the sound. btw, welcome to the forums. Bruce Quote Link to comment Share on other sites More sharing options...
Sid K Posted January 7, 2017 Author Share Posted January 7, 2017 1 minute ago, Marvel said: I've only had the k55 attached to the k400 horn, using 2A3 amps. These were in a pair of '89 LaScalas. The mids were pulled down a little, for what seemed to me a better tonal balance. I don't listen very loud, 90db is getting up there. It was a magical combination. I never took measurements, but my ears were quite satisfied with the sound. btw, welcome to the forums. Bruce I don't listen to high levels either, if I do its not for very long, 10-15min max. I currently have a 10 watt tube amp possibly changing to a 3.5 watt Triode Lab amp specifically for horn loaded speakers. When I got my first tube amp /preamp I almost fell over the sound was incredibly better. I have Khorns 1978. I'm just a simple guy who likes to listen to my music. I don't do tests. If my ears like it it must be good, right. But I never did like the harsh original sound from the Khorns so I have decided to try and improve it. Quote Link to comment Share on other sites More sharing options...
Marvel Posted January 7, 2017 Share Posted January 7, 2017 It's a slippery slope... I have no budget, sold my LaScalas a few years ago. I've been rebuilding some LS cabs I got, no original parts. Been a slow process, but I have all the parts. Was out of work for nine months, just started back. Current parts: K33 woofers K-400 horns w/EV1828R drivers Eminence APT150 horn/driver combination on separate baffle ( allowed me to physically time align mid and tweeter) DHA2 crossover, a simple constant impedance design. The time alignment was a huge, really huge improvement. Bruce Quote Link to comment Share on other sites More sharing options...
jorjen Posted January 7, 2017 Share Posted January 7, 2017 Welcome Sid. I am using the Eliptrac 400's with the K-55's right now on some custom La Scalas I just finished. Solid State at the moment. Recently sold my tube gear and never used this combo with it. I am using the adaptors in the link below which you will need(or similar). They create a nice, smooth transition from the K-55 to the 400, you do not need the gasket and they are inexpensive. Now I am not going to try and convince you I do not miss my TAD TD-4001's with the Eliptrac in my Jube Clones, but this current combo I find to be pretty damn good for a small driver. I can easily live with it. https://www.parts-express.com/prv-audio-adm25-50-1-3-8-18-tpi-driver-to-4-bolt-2-horn-adapter--294-2941 This is a nice adaptor as well. Don't know if you would need to use the gasket with it or not. http://www.speakercity.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=PC50 1 Quote Link to comment Share on other sites More sharing options...
Chris A Posted January 7, 2017 Share Posted January 7, 2017 1 hour ago, Sid K said: But I never did like the harsh original sound from the Khorns so I have decided to try and improve it. So you're thinking that changing out amplifiers will solve a loudspeaker harshness problem? And you think the harshness problem is all in the midrange compression driver and horn? Quote Link to comment Share on other sites More sharing options...
Schu Posted January 7, 2017 Share Posted January 7, 2017 2 hours ago, Chris A said: So you're thinking that changing out amplifiers will solve a loudspeaker harshness problem? I bet it makes a difference! as someone once said... Hearing IS Believing. Quote Link to comment Share on other sites More sharing options...
Chris A Posted January 7, 2017 Share Posted January 7, 2017 I believe the question was for the OP, unfortunately. I did pose a question for you in this thread: Chris Quote Link to comment Share on other sites More sharing options...
Schu Posted January 7, 2017 Share Posted January 7, 2017 I have to ask, what makes you feel qualified to question someone? I am curious... becuase thats not a fresh question. Quote Link to comment Share on other sites More sharing options...
Chris A Posted January 7, 2017 Share Posted January 7, 2017 I'm interested in the answer. I asked a question because I'm interested in the information that returns from asking. Am I missing something? Chris 1 Quote Link to comment Share on other sites More sharing options...
Deang Posted January 7, 2017 Share Posted January 7, 2017 Hi Chris, Are you going to be at the Gathering in April? Quote Link to comment Share on other sites More sharing options...
TubeHiFiNut Posted January 7, 2017 Share Posted January 7, 2017 7 hours ago, Sid K said: Hi Everyone, Has anyone had experience with this type of combination? General input would be great also. I'm currently about to do this combination/upgrade I have tried a variety of PP and SE tube amps on my stock La Scalas. The Almarro A205A EL-84 based SEP (4 watts/channel) and CazTech SE-845 SET (18 watts/channel - monoblock) amps are my favorites with the nod going to the CazTechs. From my experiences, I prefer single ended amps on my La Scalas. Just my opinion and YMMV..... Quote Link to comment Share on other sites More sharing options...
Chris A Posted January 7, 2017 Share Posted January 7, 2017 11 minutes ago, Deang said: Hi Chris...Are you going to be at the Gathering in April? I've penciled it in. We've had a number of pop-up challenges in the past year that have taught me to insert the phrase "God willing" into the sentence. It isn't a terribly long drive for me, however: 3.5 hours. I'm looking forward to hearing the calliope album that Dave M. apparently has (that everyone else apparently hates). I do hope to be there. I was there two years ago, but was unable to stay/attend the festivities and missed the appointment that I'd made, unfortunately. It's been a long haul since I've seen the Jub crowd, and haven't really met the others. Chris Quote Link to comment Share on other sites More sharing options...
Sid K Posted January 7, 2017 Author Share Posted January 7, 2017 5 hours ago, Chris A said: So you're thinking that changing out amplifiers will solve a loudspeaker harshness problem? And you think the harshness problem is all in the midrange compression driver and horn? No, to the amp. From what I have read on alkeng.com and other research I have read up on, yes. Quote Link to comment Share on other sites More sharing options...
Chris A Posted January 7, 2017 Share Posted January 7, 2017 Just so that you have the benefit: the K-77 is a pretty rough driver as I've come to find out through the Belle tri-amping stuff. I chose several crossover points and steepness filters and found that it basically doesn't have a really good crossover point with the K-55/K-XX midrange horn, I found that the Beyma CP25 worked much better (could cross lower, and it had apparently better polars, but worse measured harmonic distortion, and it required equalization--PEQs). However, the K-55 driver/K-600 horn combination required essentially no EQ at all. So you might consider a better tweeter that can be crossed lower to the K-55, which actually sounds very good to my ears, even after all the EQing, swapping of tweeters and experimenting with crossover filter points and steepness. The K-55 seems to be a fairly good sounding and testing driver, but the K-400 series horns have that collapsing polar design. I haven't tested a third-party midrange horn to understand how they stack up. If you're willing to do a little acoustic absorption right around the mouth of the stock midrange horn, you might find that it performs extremely well. I'd recommend looking at the CT-120 or CT-125 from Bob Crites. I know that the CT-125 requires a little boost in gain to match the K-55 response. The CT-120 sounds like it could be a real winner, but I've not heard one. It's something to consider. Chris Quote Link to comment Share on other sites More sharing options...
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