KT88

Ok, no gasket betwen the adapter and the horn, but make sure it is really airtight. A thin gasket (enough due to the bigger surface) would give me peace of mind.

Let's not worry about unlaid eggs yet (at least that's what they say in Germany)... My insignificant two cents: It is important to find the happy medium. A solution that is too complicated and „multipart“ for the new target group, lets say in a way we Jubilee owners have been doing since about 2007 (but we do it with a lot of fun!), is on the one hand an overcharge for many consumers and for quite a few retailers. This potential target group of wealthy buyers do not want to program their Diamont Jubilees and select high frequency drivers or a DSP, just as they do not want to program the ECU or the dual clutch transmission of their Aston Martin. But there is a very fine and subtle balancing act between too little simplicity and too much simplicity. To a large extent, this target group will have a different mentality than the tinkerers and often recreational engineers that we are. We have to put ourselves in this mindset. Of course, this is not to say that some people here on the forum are also interested in the DJ and can afford it. But many members here are more technically active than many in the new target group, I would think. I am not only a Klipsch enthusiast but in my main profession I am a in-depth psychologist and market researcher using qualitative methods, e.g. depth interviews and focus groups. I have not done a study for the Jubilees but I know the target group a little bit. As I said, it must not be too complicated, because then consumers turn away. But it must also not be too simple, if only for emotional reasons. In this price range, a complete solution including power amplifiers and perhaps also preamplifiers can be experienced as paternalism. These people spend a lot of money to buy a functioning system on the one hand. But on the other hand, they want to have the feeling of freedom in their decision and choices. The personal choice, but without getting into an overload! is very important. The Aston Martin must offer driving programs, from cruise to sport street to trackday, even if 95% of buyers will never use the race track. The Jubilee needs a special care taking. But also the good feeling of an individual decision and the individual tailor-made adjustment to its new home. For all the above reasons, I think the current offer is very well done. The new user does not have to - program - select driver - select dsp. From this point of view, the Diamont Jubilee can be experienced and understood as a complete working loudspeaker. That's fine. it's nothing more, nothing less. It remains in the familiar "loudspeaker" category. The user simply needs to know that they must/ or may/ and are able to choose a pre and two stereo power amplifiers. Now the dealer comes into play. Of course, the dealer (and not many will sell Jubilees, albeit around the world) has been very well briefed by Klipsch. The dealer will offer the prospective buyer a nice pre-selection of suitable solutions. Or he will tell which pre and power amps have worked very well with the Jubilee. Something like this many buyers know because they know other (simple) things, for example that there are speakers that eat a lot of power, and since it does not work with 5 watt amps, just to give an example. In final effect remains the customers feeling of choice and the important feeling of possible customization that this price range and this clientele needs. In summary, the Diamond Jubilee is not an experimental lab for its clientele, but it is also not a BBQ bluetooth all in one ready to play toy to be taken seriously. By the way, I find the cosmetics very successful and not at all "industrial".

That is the other end of tone controls. In the analog world just a reasonable bass and treble adjustment is quite good. We do not correct the system but the mix of a tune.

So you can measure the new OD and take my ID? Do you have a gasket between adapter and horn throat as well?

SpeedLimit, please see the photos below. My original sealing rings are compressed and no longer have the shape as fresh elastic rubber. When I get the new gaskets from M. Crites next week, I can gladly measure again. The measurements of inner and outer diameter on the sheet are taken from the old gasket in red colour.. The outer diameter should still be correct because the rubber does not expand further on the throat of the horn. My new gaskets are of course thicker than the old used up and compressed ones, the thickness seems perfectly fine as it feels when tightening. Maybe the new original ones are a tiny bit thinner. We will see. Perhaps, if you like to start right now, take 0.3 mm more or so to cut the inner diameter because, a new rubber could be compressed into the sound beam when too narrow at the beam? With a strong LED light you can see when looking into the horn from the mouth side if something rubber is in the way or not. This is the rubber pad I purchased in a DIY market to cut the gaskets from.

BTW, somewhere I read that some users also want to seal the mouth of the horn to the baffle. I think that this is really not necessary. Since it would be more important to me that the horn is simply well screwed so that it does not vibrate. At the mouth opening of the horn there is no more pressure difference to the enviroment. The pressure difference only exists at the throat of the horn, hence the importance of the sealing ring.

SpeedLimit, your homemade gaskets look very good optically but I would use rubber material and not foam. Foam is probably much too soft against the force of tightening the thread. And the driver really needs to be tightened. With foam you would quickly make metal to metal contact. Or is it a rubber-like very stable foam? I cut new gaskets for my K400 horn from a rubber pad. The 44 year old ones were crumbled, red in the picture. It is only an interim solution, new gaskets from Michael Crites are on the way but only because I ordered other items anyway. Otherwise I would stay with the DIY solution the way it sounds. I cut them not very nicely but the best I could. At least I did it in a way that nothing of the rubber interferes with the opening of the driver or horn throat and everything is effectively sealed because the tightness is very important for the radiation of the lower frequencies. And perhaps?…also regarding to avoid some sharpness of the sound? Whether the inner ring is laser sharp circular or not should not matter regarding the wavelengths up to 6000Hz max.(just under 6 cm) which is a much longer wavelength than the rubber gasket area…resp. the thickness of the pressed rubber gasket. Using the old sealing ring I turned the driver to full stop with no flexible dosage of force.. With the new sealing ring I have almost half a turn to put it firmly but gently hand-tight.

Here is a small but perhaps quite representative example of "audiophile engineering" in the outside world and "sensible engineering" in the inside world of a loudspeaker. The brand is quite reputable and very well known. It was simply the first image that appeared to me in a google search for "driver connection wiring". It could have been many other brands as well. I deliberately chose this example because the photos are public and even serve advertising. EDIT…It is not an advertising material but a review (even if it reads like advertising). Anyway I do not "expose" secrets. But the audiophile consumer only sees what he wants to see. The interest, the "half-knowledge" and the emotions control the view. Here is a photo that shows the inside of the box. The drivers are connected just like the oil pressure sensor on my car's wiring harness. This works and is perfectly ok for me also for a speaker. Here the speaker cable connection terminals to the amplifier are shown and described. The text says: „Van Den Hul cables are used throughout and to the rear are single wired WBT 710 Cu mC Next-Gen terminals“. My source. https://studioincar.co.uk/blogs/projects/dynaudio-heritage-special Let's be clear, everything is allowed, wonderful and all the more beautiful if it pleases the owners and stimulates the purchase. You should know for yourself where you stand. I even believe that these hifi products manufacturers are forced to serve audiophile half-knowledge, because otherwise it would be missed by many consumers. You can also buy 10 cm cable bridges for $600 to replace the contact plates of a biwiring connection. But that is the outside world. Inside the (very good) box, the same cables are in many high end speakers connected to the crossover with car plugs. Why? not only to save money but because it works. By the way, many engineers say that small connection surfaces conduct the signal much better than large surfaces. Gold-plated WBT plugs, as thick as two thumbs, may work electrically worse than small cable lugs. Compare the Mcintosh MC275 MK4 connectors with those of the MK5 (or later). What does the "audiophile" want to see and what makes more sense in my opinion (MK4). But who wants to sell must serve fashions, that's the way it is. MK4 MK5 and later. Shindo, one of the most expensive Japanese amplifier manufacturers One man company takes only screw terminals with small surface, as it is used for example in Klipsch AA crossovers or other types of that time or in the MC275 MK4 above and the original from the sixties also. I'm by no means saying everything doesn't matter and you don't have to worry about it. But there is a difference if it is technically useful or just to impress the eye. I am not accusing anything or anyone. I am interested in the phenomenon itself. I am not only curious about the emotional phenomenon. I also read technical books like this almost 25 years ago. https://www.tnt-audio.com/books/cable_cookbook_e.html Finally the sound must be enjoying to us. Just a fictional example. What if the „science“ would report that say a Nordost speaker cable has better measurements in some way but I would prefer a Kimber TC, or the cable which illuminates our light bulbs.

Couldn't PIM be handled with some kind of nano soldering?

I am sorry if I hijacked the thread. This is supposed to be more about a sweet dog who feels very comfortable when she seeks the proximity of LaBelle. Sorry. And the nice dog speaks for herself.

Others here have more technical education than I do. From what I see, concerning the bass, no pressure chamber is used. And also no sound transformation. The bass drivers radiate with the full surface. So I would guess that the bass horn is not a "real" horn but rather some kind of waveguide. But I have no idea what acoustic laws apply when you build this big. Looking forward what the experts will say.

AudioDon, that alone could explain why one of your squakers sounds distorted. The above shown circuit is right and everything else is added by someone later on and it is not original. Normally you do not need to adjust the SPL of any of the drivers if you have the original ones and the genuine AA network. If you still have this zener diodes in just try to listen without them, just unscrew one of them. Be careful not to damage the tweeter by switch on or off noise of your amp, but the gain of sound quality is significant.

But he says he has K55V in his post.

Haha, the deep psychoanalyst has revealed his interpretation completely without fee:) So, I did not search, but it was the usual Audiogon newsletter, so advertising. Then I stumbled, because such a magic water was advertised on Audiogon. Of course I was curious enough to read the whole text and how it is formulated, what words are used for seduction. So much for my rationalized justification. In reality it was like this: Because you are absolutely right about one thing. Writing and reporting about it here was a very healing self-treatment for me. I couldn't sleep for two nights before writing about it, I had beads of sweat on my forehead and I heard strange voices after reading about the magic water. Actually, the sweet lure of seduction had done two things at once. On the one hand, an irresistible attraction to the point of self-sacrifice, and on the other hand, the great unconscious fear of this seduction. Now that I am writing about it again, I feel even better.😱

I agree with you on everything, but I see Dean's point about what earnings need to be the minimum to survive.In Germany, we have reached a point where salaries that are too small are topped up by state support. This is unfair in my view, because it does not help the poor employees but companies that are unscrupulous.

Heresy? Wife? How about this? Maybe first the house, then the dear wife? If her shoe closet was sized like the bass horns, nothing should stand in the way of love happiness.😎

I love them also, and that what looks like MC30 as well👍

My C22CE has simple tone controls. I use them in some cases and I am happy to have the choice. When they are positioned flat they are out of the path.

Thanks for the link, mustang_flht. I spoke yesterday with his quasi competitor from the old days, Werner Enge in the north and his competitor in the south of Germany, these two used to be the only Klipsch distributors in Germany. I will be happy to contact Werner, I have not met him yet, let's see what he says on the subject:)

mustang_flht, I can only say that your English is excellent, but I am not a native English speaker. Certainly your English is better than mine. In cases where I am unsure re the translation, I go to "deepl.com" for help. At least I look for suggestions. The great thing is, you go with the cursor in the translated text and it pops up many alternatives, other vocabulary that are immediately offered with different sentence structure to choose from. deepl is a startup from my city Cologne, a very smart translation engine, worth a try. As a fun bonus, even the differentiation between UK or US English is offered. https://www.deepl.com/translator

Because I didn't know what deoxite is (we don't have this trade name in Germany), when googling I found this (below). If the man is so upset about the price of deoxit, then he should better never know the "3-D Enhancer Solution". https://www.hagensieker.com/wordpress/2018/06/18/deoxit-what-is-it-what-isnt-it/

I was on the phone today with an old-established hifi dealer in the Altmühltal in southern Germany. Actually, I just wanted to order a new 2021 Bluesound Node. Then we came to talk about Klipsch speakers. It was very nice and stimulating. The dealer is 65 y old and knows and deals with Klipsch for a very long time. He said that in his opinion the old speakers, exactly we talked about the Lascala, have such a good sound because Klipsch used bone glue until the seventies. He said you can easily check that by carefully going into the glue line with a knife on the back. The glue splinters off brittle. In the later models it remains soft glue. He says that the hardening bone glue has a similar positive effect on the case vibrations as in instrument construction, e.g. a violin or a cello, where this glue is also used. Does anyone know anything about this?

Welcome, Don. Just as info to classify it. What year are your Lascala? What is the name of the crossover? E.g. AA or a similar letter (number) combination? Does the tweeter have a square or a round magnet? What is the name of your midrange driver? Is it a K55V? or some other designation? I have 1977 Lascalas and I bought new diaphragms last week from Michael Crites, Bobs son, Bob passed away this January, RIP. Also new sealing rings between driver and horn. I don't hear distortion but I aim for original condition. And after 44 years I would like to replace the diaphragms. I'm sure that makes sense in your case. Bob Crites said here on the forum years ago that too old diaphragms degrade the energy of the lower frequencies. Since you carefully listened to the driver without freq.crossover, and it still distorts, I would think the driver is the cause. Probably the voice coil could be scraping at the air gap. You say that only one driver/horn distorts. You also say that both horns sound bright. Do you mean that positively or negatively? Have you heard only the one speaker whose squaker does not distort? Does it sound round and pleasant? If too bright it could also be caused by worn out caps so that the energy for the bass is reduced? But this is only my guess and others may habe a better explanation. Maybe you can also swap the crossovers once to see if the distortion goes along or stays. Another trivial but effective thing. Clean all cables and connections. Are the cables attached to the Squaker driver with compression springs or soldered? If with compression springs, clean this connection as well. I can only say that if everything is ok then the Lascala is one of the most beautiful sounding speakers on this planet, and I have met and heard quite some speakers. In summary no matter if a driver distorts, I would start by buying new diaphragms and the sealing rings. BTW is the distorting driver properly torqued to the horn? A word about the capacitors. This is a hot potato and there are a thousand opinions and tastes. And everyone should use what makes him happy. Gut this is just my personal opinion. I have made the experience that with the Lascala polyester capacitors sound very good. They are the ones that Klipsch also recommends because they have very similar characteristics to the original polyester in oil Aerovox in the sheet metal cases. Really, it's not a strict must, but I've taken these polyester types and replaced polypropylene types no matter how well the polypropylene caps measure, etc. The horns are happy to see some "softer" Q of the caps and the impedance of the overall balancing network keeps like intentioned, that is what Roy Delgado, the chief engineer of Klipsch pointed out here. You can buy a fitting set with the right values of your xover type of Klipsch approved polyester caps from JEM, have a look at the pinned thread of this modification section. It's just my personal opinion but confirmed by some of the people. I also know Clarity Caps. These are very good caps, but maybe in electrical values "too good" for the horns, not that the horns don't deserve the best, but it should be the best that suits them best. More on that here:

50 year old receivers BTW I have a Marantz 2270 and a Sansui 300L. The Marantz was my uncles item and I rescued it from being trashed after he passed away. I let restore it long before this kind of receivers got their second life and popularity, and my now adult son happily uses it, or better said now it is his P&J. The little Sansui was the first stereo of my father in 1970. He passed away in 2003. This 1970 little Sansui system was my key at 11y for my stereo journey. I still have the corresponding and good working Sansui SP10 single driver speakers. The 300L also still works after a smaller restore. BTW at this time Sansui was really not known or popular in Germany, and hifi was still not discovered by many people, That startet almost 6 to 10 years later. In my mothers house (she is happily alive and healthy) there is still my fathers Sansui QRX 6500 receiver with Sansui SP2500 speakers in front and SP70 in the rear. Revox tangential turntable and a Braun TG1000 tape recorder. So every time I visit my mother every second week I turn on the stereo in my parents house. And I enjoy what I hear.

rap, hip-hop and opera🙄