Dave A

No but I do test them just for the heck of it when I am done with a recap and have that pile of parts sitting there. I test with a B&K 885 meter and every one of those old caps is high ESR even though most test in specs for capacitance. EVERY one of them with the exception of a couple in a set of MCM 1900 crossovers which tested OK for ESR and capacitance. I do not test old caps on while on the crossovers any more before replacing them since I have confirmed the wisdom of doing so time after time after time. Dayton caps are fine and won't break the bank. The fanciest I ever go is Sonicaps and leave the $$$$$$$$ stuff for others to play with. OK how do you know they are in spec?

Can't argue with that but I also know sometimes you need to restore something in order to hear it's full potential. Buying a car firing on 6 cylinders out of 8 and then saying it does not perform right is not a fair test of potential. After having gone through many sets of Klipsch speakers I never begin to assess them until I have checked all drivers and done a recap. You get a set of speakers this old and just plug and play you are not getting what they are capable of.

It is the voice of experience since I have had a set. Tim in St Louis told me of selling a set of these to a guy who drove from California to get them. I guess my longest buying trip has been 850+ miles to get a pile of KPT-456's and the moral to the story is they are where they are and that is never next to you. I figure that most of these in commercial use have been replaced and darned few are going to surface again. However there is hope for the handy since a set of new K-402's can still be bought and bass bins are not all that hard to build. Hard to describe the impact a single fold horn has and if any of you who have not heard a set have a chance to do so go do it.

Looks like a factory crossover behind the tweeters too so one amp will run it all. To anyone who has the slightest chance of fitting these in past the wife or where ever and does not do so is missing one of life's greatest audio experiences. 95% or better I guess of all Klipsch devotees have never heard a set and have no idea how wonderful these really are. I would have NEVER sold mine off until I had something better on the way. For the price of one new La Scala you get this audio monster that will drop your jaw to the floor.

I have had some Chorus speakers that sounded pretty sour until a recap. I would check the drivers out and do a recap before I kept Fortes over Chorus. Chorus is my favorite over Forte and Cornwall any day. I hear one that does not sound really good I know something is wrong.

Just came home to fresh ground Costa Rican brewed with spring water from my cave spring and life get's no better. I call it "Cave Spring Reserve" straight from Tennessee.

Well if what was hidden is now revealed of course there is more bass. If a tree falls in the forest and someone is around is it heard? Mo betta bass.

Yes they are here in Nashville with the retards riding them in traffic. Hope they pass a law where no driver is liable when stupid gets hit on the scooter. These people are seriously mental defectives and just as bad as militant bike riders who want the roads car drivers paid for to be protected open access for toys.

Well the idea of the Super Heresy has appealed to me for some time but it was not until a customer last week revived my interest and coincidently I run across a set of HBR's from 1981 with soldered lug drivers in great shape so I guess I have to do it now. Waiting on parts to get here but doing what I can and that includes putting in a DE10 instead of the DE120 to replace the tweeter. Claude recommended this at the beginning of this thread but I had never though about doing it so I try it today. I will never recommend the DE120 for Heresy's again and it was a bit surprising how nice the DE10 sounded even on the smaller lens and the nice bonus with these is cheaper price.

There is another issue at play here regarding diaphragm replacements. I had a set of Ti diaphragms for a K-792-K recently and decided to run a frequency sweep on them just for the heck of it and the two were really different. So I took the one that had low output and rotated it 120 degrees and NOTHING came out. Went and rotated it another 120 degrees and they both sounded right on and balanced. I have read that it is best to do frequency sweeps when setting up diaphragms before and from now on it is the only way I will do these. I do not know which was eccentric to the other on the one tweeter but there was a way to make it right.

No it is not just generic it is a provable benefit. I have the same B&K 885 meter as he does and not one crossover I have had has had acceptable capacitors. I think he recommends replacing capacitors always but that is not a new crossover that is a recap. Not one old capacitor I have measured has low ESR even if the caps UF was in specs and yes that does matter.

Some time this year maybe???

I am shocked that you would say I have a horn bias. Working on a project I might bring to Hope that would dispel that idea though. Hearing is best but they don't exactly give those 396's away so for many that is not an option.

Well you know me and pro gear is the best way to go as far as I am concerned. I have been having great success making La Scalas sound much better though and what you can do with a two piece LSI is create something really nice just not super deep bass. I mean sound nice in the same room next to the Super MWM's. They make great book shelf speakers

If you ever get La Scalas again try a mid brace in there. At higher volumes eliminating the resonance does not give you more bass but what is there becomes crystal clear and dramatically better when the resonance is gone.

Absolutely and I prefer the LSI's by far. Fiddling with eliminating side wall resonance with LSI's and I have tried two things. One is with the one piece I stuck braces in there between the dog house and sides and it make a big improvent. If you have a two piece what I have done is to beat the sides off and replace with 25mm Baltic Birch. Then make a new top horn section with the K-400 and K-55-V and a set of large MAHL's with the DE10 and it becomes a whole new world. You do nothing at all to LSI's but recap the crossovers and they are still much better than stock La Scalas with recapped crossovers. Two piece LSI's are the very best thing you can get to make huge improvements in what you hear.

I am thinking there has to be an acoustically neutral dyed hot glue and will be on the lookout for it.

Yes they will fit. To date the only problems have been with earlier KHorns where the holes were hand routed and there is also an answer for that. PM me please. Question on the A55G drivers. Do you think they are noticeably better that stock Atlas drivers?

Right you are.

That K-43 is more musical than the K-33. Also 200 watt vs 100 watt. I never take K-43's out but I have been know to take K-33's out right now and in fact have a nice pair for sale.

WAY long gone, sorry.

That's what I have courtesy of my wife who no longer needs it. Seems to work fine. I thought about silicone too but the idea of set forget and work immediately was what I wanted

OK so low temp glue sounds better then. Any idea which ones to stay away from?

OK all you crossover whizbangs I see plastic clips, zip ties but never hot melt. Is there a reason for this or is it just habit?

I have an EQ with gain control on a pair of La Scalas right now and it makes a big difference over feeding them from just my amp. Whole lot cheaper than DSP too when you don't have to have the very best output. My personal system will be run with Xilicas from now on but I am going to start selling used EQ's with some of the speakers I fix up because they make things sound much better.