BerndH

Lorenzo, excuse my late answer to your above mentioned question about the right distance of the SM120's horn mouth to the basshorn's front. I've been reading your threat the first time. I'm here not very often. When I installed first my SM120 horns, I placed the horn's mouth that it finished with the front panel of the bass bin. After a while listening i noticed that the kickdrum came twice - one kick out of the bass and one out of the mid horn. So i moved the mid horn back until I heard the kickdrum at the same time out of both speakers. The mid horn's mouth is now 5 cm behind the front panel.

Maybe i passed a discussion about the development of DM's horns and now i spend words, but i assume, DM folded the horn path about the triangular doghouse. Starting like the original Klipschorn but the first expansion is rotated at 90° then back in the corner and at least along the walls out of the corner - a double Z-Profile. With a horn simulation software you can start to build your own prototypes without having the exact plans. But that's more expensive like having the plan Bernd

Dear Frans, Crossoverparts near Belgium, exactly in Germany, are available from www.intertechnik.de or www.lsv-achenbach.de. Probably not Hovland or Solen, but Intertechnik and Mundorf are certainly manufacturers of comparable high quality parts. And by EU-law you can send the parts back until 14 days after receiving them. Bernd

Elimination and reinforcement of bass at different room position is not my biggest problem, because ususally i sit during listening. There is another thing that gets on my nerves. In the frequency range somewhere between 100 to 150 Hz seems to be a strong resonance. When the bass player holds a bass note at this frequency a little bit longer, it booms. Then it sounds like an organ pipe. Anyone else with this problem? Bernd

Rudy 81, You must have had a really big leak. In my home each klipschorn has a leak of about a quarter inch at the front of one side. This is because the corner angle is not perfect 90°. My klipschorns have no rubber seal. And i have no lack of bass, absolutly not. Bernd

Hello D-Man, I used the EM15-300 with the 3x13" opening, when i bought the Klipschorns five years ago. About things like throat opening i had no clue. But maybe that would have been the trick. During this time i never felt, that the bass would punch out the mids and highs. I remember the day, when i screwed in my K-33 and did the first test: My son came out of his room and said "now we have bass". But firing 30 Watts into the Klipschorn Bernd

Hello D-Man, The Kappa 15 is a mid-bass-speaker, see the x-max 1,6 mm. The Kappa 15 LF is the better bass speaker (LF for low frequency). Don't believe the high sensitivity of 103 or 101 db/1W/1m. See the following page for the sensitivity versus frequency for Eminence speakers: http://editweb.iglou.com/eminence/eminence/pages/resources02/sensitivity.htm As you can see, your posted sensititivy is reached in a frequency range, one would never use a bass speaker. A bassbin for the Kappa 15 LF would have a volume of 150 liter and 4 bass reflex ports with a diameter of 11 cm and a length of 20 cm and would so tuned at about 45 Hz. Another interesting design used for semi-pro applications can you find here: http://www.aw-audio.kaigerner.de/subs/15arls.html But both speakers are bass speakers, not recommended for sub bass applications. I wouldn't use none of these speakers in the klipschorn. My experience with the Eminence EM 15-300, the precedessor of the Kappa 15, in my klipschorns was really bad - very bass shy. But i had the 8 Ohm version. After i changed them against the K-33, i realized what klipschorns can sound really. Bernd

That's right. The SM-120A is made of polymer. This can swell up when it comes in contact with solvents or lacquer. The other thing is adhesion of the lacquer and the possibility of forming tears. Each sort of polymer behaves different in that. When the polymer is unknown, always do a test. Bernd

As Tom Brennan said, these are constant directivity horns from EV. They are from the HR-series, which appeared later as the SM-120 horn. If you want a spec sheet, give me a note. Bernd

"The worse thing in the heritage line is the stock midrange horn. IMHO...." Correct! Bernd

Maron, Did you heard the ST-350 baby cheek in comparison with the K-77 / T-35? Is there a big difference in sound, not only efficiency? Bernd

I have a source for a EV-ST 350. Would it be a good replacement for the K-77? Bernd

@JMON from what i know, these horns are made from a plastic material called ABS (Acryl-Butadien-Styrol). Bernd

@Frans Since i have these horns for more than a year with the modded crossover, i can't exactly remember why these mod is recommendable. I mean, that the tonal balance, the transition from bass to mid, was effected in a positive way?! Try it, the parts are cheap, so why not. @JMON I cannot locate side wall reflections at my listening position. I have a living room 18' x 24' tall, the Klipschorns are in the corners of the short wall, i sit about 10' away from this wall. When i go back, about more than 15' away from the source, the sound becomes worse, somehow blown and washed, probably from room reflections, standings waves and other influences. But i had this phenomen with the K-400 too. Bernd

Frans, nice to hear that you have the same impression of these horns. Today i can answer your first question, if there is a notable difference when they are mounted on a baffle or not: I say no! See my pic with the new top section how they can look. I really recommend the crossover modification, which i received from DJK. I gave you the link in my first contribution in this thread. Bernd

Hello JMON, I usually listen at medium levels of estimated 95 dB (0,5 Watts from amp into the horns). My listening position is about 12' from the horns. My favorite music program is Frank Zappa and Primus, rock, metal, industrial and electronic music, rather jazz rock. With the stock klipschorns i often found the mids (vocals, guitars) too loud, too harsh. The directivity too was more a christmas tree: Off the center position the mids falled off. The modded Klipschorns brought a big improvement here. I really like a good presence in the mids more than heavy bass or highs, but the K-400 horn was too much for my favor. Bernd

Q-Man, i read with great interest your posts, where you described your modifications. I would very like to hear such a system. Interesting, that you also changed polarity, probably for another reason. I will tell my reason even when i blame here because people think, i did a mistake with the whole mod. But i'm generally so pleased with these Electro-Voice horns, that i will never go back. I reversed polarity because i noticed a cancellation of frequencies from the tweeter. I believe i got some interferences. But i'm wondering why. Before i constructed the top section, i placed the midhorn and the tweeter laying on the top of the bass bin. I listened carefully for weeks, that all sounded right. Later, when i mounted all in the top section, i got this effect. I heard it while playing music. Because i have no test equipment, only my ears, i did a test with a self made CD containing various test tones. With this CD i heard the tones from 6000 to 8000 Hz only very quiet. After changing the polarity of the tweeter it sounded right again. I have no clue, why this could be. Maybe some experts can explain here please. But the most important thing is, now it sounds and looks good. Bernd

Hello, for tweeter installation there is nothing to dissamble or reassemble at the tweeter. The hole for the tweeter has exactly the height of it and the width is a bit smaller, so that there is enough wood on each side to screw it in. As the tweeter magnet is taller than the height of the hole, you mount it from back. Move first one side of the tweeter from back through the hole, then the other, then center the tweeter and fix it with screws. The woodworker did a good job, so that you see no gap, only when you have a very close look upon it. I hope my description of tweeter installation was clear? Bernd

Hello Q-Man, i'm using for the midrange the K-55M with an Electro Voice SM-120A Midhorn. The Crossover is an slighly modified AA-network. There i added by recommendation of forum member djk a resistor and a cap. A Question for you: How is the polarity of your tweeter? Bernd

And here is the klipschorn in its old look. Bernd

Hello, after changing the midhorn i needed a new top. A woodworker did it for me to my plans. I intended to add a grill cloth in front of the midhorn, but my wife likes this look. I'm glad with that, because it saves me additionaly work. For asthetics i decided to move the tweeter between bass bin and midhorn. I flush mounted the tweeter in a simple way. No Z-brackets, the tweeter is only moved through a hole from backwards. The ugly PVC-film on the bass bin, please see pic of the old finish in the next post, was replaced with a plate of birch plywood (as used for the top). I hope you like so. Bernd

Hi Thomas, indeed, Mr. Bitzinger is a very kind man. I liked to phone with him. And my order came very quick although it was christmas time. What is the actual price today? Oops, Hannover is a bit too far from Erlangen. What's your room size, what amping? What type of Klipsch, any mods? Schöne Grüße Bernd

Dear Thomas, buy here: Audio Tuning Herr Bitzinger Margaretenstraße 98 A-1050 Wien 0043/1/54485800 They sell a new K-33 for about 180,- Euro incl. shipping from Vienna to Germany. That was end of 2002. No silly questions from Mr. Bitzinger. That's the cheapest dealer i found around Germany, more than 30 % off as the rest of the dealers. Good luck Bernd PS: Where are you in Germany?

This looks like a 3500Hz crossover point between K-55M and tweeter would be better. What say the experts? Bernd

What? Is the K-55M in the range from 400 to 6000Hz about 5dB louder than the K-55V? Can you or anybody else explain these plots? Bernd