Tom Mobley

OK, this raises several questions from me on my Heresy-->La Scala upgrade project. I have multiple references that La Scala's used the same components as a Khorn if they were the same year. I'm back from vacation, ready to order the 15" woofers from Klipsch, and I see this credible looking post from a person who worked at Klipsch building speakers, clearly states that "Klipshorn was fired by a 15 inch woofer, NOT by the 12 inch woofer the LaScala utilized, although the same 15" woofer used in the Cornwalls of that time were used in the Klipshorns, and the same 12 inch woofer used in the LaScala, was used in the BelleKlipsch(of course), and in the Heresy." Seems to be a fairly hefty contradiction here? Anybody had a LS apart recently, confirm the size of the woofer? I don't want to spend the bucks for a pair of 15" woofers if I don't have to. I notice the woofer slot in the LS plans posted here have a measurement of about 13.2 inches, which would be about the right size for a 15" woofer, substantially too large for a 12". Comments? Also, my Heresy's which I bought new in mid-1978 if memory serves, never repaired or even disassembled, have a squawker labled "K-55V 9/23/77", is this identical to a LS squawker or is there a different horn assembled to the driver? I've noticed in some of the KH pictures I've seen posted that the horn seems to be quite long looking. Too long to fit in a Heresy, or maybe even a LS. Expiring minds want to know.... Who wants to be the hero that straightens all this stuff out? Tom

Klipschguy, >>I thought the Chevy 427 CID was a big block? It is, unless a 4" stroke crank is installed in a 400 small block. It's kind of marginal on the clearance in the crankcase, but it can be done. Better to use an aftermarket block, but this one is in a 1970 four bolt main passenger car block. Funny thing is, the guy has it all fixed up to look like a stock 350 under the hood. Aluminum manifold painted orange, all that. It's in a 72 Camaro, car will jerk your neck off in any gear. Fun car. Tom This message has been edited by Tom Mobley on 04-05-2002 at 01:07 AM

much coolness, a buddy is a genius H-P plotter tech at a local CAD vendor, he's printing out John's La Scala plans doc file on 36" x 48" paper for me. I'll take all the help I can get. I did a real nice 427" small-block Chevy for a 72 Camaro he has, he told me if I ever needed anything.... Tom

It's a slot rather than a hole, it's in piece #12, see lower left and on right above chart. Tom

Jeez, here I am looking all over the place for these 15" speakers, Klipsch has them available new for $100 apiece. So long, ebay. Thanks, Gil, once again. They also have an AL-3 network, but they're $152 apiece. I'll proably try to find some way to fix mine to work. Any detail on that, Gil? edwardre, my hearing is so damaged that I don't have an issue with the bright K-77 tweets at all. I see guys on here turning down their treble, redoing their crossovers, etc to control the tweeters on Heresy's, I have my treble turned UP 1 notch.... Sux to be me, I guess Tom

yeah, that's what I needed all along. this is looking better all the time. checking ebay I see that there's some 15" drivers listed: Stephens 103-LX2 15" woofer for Klipschorn also mentioned is Altec 515b, which looks like it's 16 ohm, is this a big deal? I see the 515b mentioned several places in connection with the Klipschorn, is this what I need? will my Squawker K-55V, Tweeter K-77, crossover Type E work for this deal? I've got a feeling I'm going to asking Al K for a crossover. Thanks for all your input, especially the dedicated william F. Gil McDermott, who really went the extra mile to help me. Tom

arfz28, divide the millimeters by 25.4 to get inches. as I recall, this is exact conversion, not any rounding error there. ex: 612mm/25.4 = 24.09in, just about 2 feet not hard at all, if you have inches and want mm, multiply the inches by 25.4, get mm's. Tom

William, Thanks for your effort, the deal finally sank through the sheer cranial bone density. This looks a lot easier now. I managed to survive calc I, II, and III, diffeq, all that jazz, I understand the horn deal, I just didn't picture correctly how the pieces of wood were arranged. On your pic, yes, it must be available on the web somewhere, you can't link to it on your local drive unless you're running a web server and open to the public. Doubt if you're interested in that. Thanks for taking the time to help. I think I'm gonna do this deal, just need to find the drivers. Any suggestions? If I go to ebay, what exactly do I look for? Is there a vendor where I can just buy them retail? Thanks for all your help and insights, Tom

OMG! Looks like a nightmare to me. I wouldn't touch that with a 10' pole. Tom Very cool, tho'.

well, OK, I'm not afraid to look dumb. Here's my question(s): It looks to me like the woofer mounts facing backward on the inside of part #12. Is either side of the cone open to the atmosphere? Looks like the 12 x 3 slot opens into a square closed box bounded by the 4 #2's, the #12 and the back. Is this right? Also, the piece labeled #7, does it have a funny shaped hole cut in it, sort of like a home plate shape with the tip cut off? On a larger view, how is the woofer serviced? Is that what the hole in #7 is for? Take the bottom plate off and go though that hole? Expiring minds want to know..... Tom

OK, looked at the plans, not that bad. What I can't figure out is the function of the 4 parts #2 and part #3. Makes it look like the woofer fires through the 3" x 12" slot into a square closed chamber with funny mitered joints. Guess I need to see a picture of a La Scala with the back off. This drawing is in German, anybody know the ebay name of a quality vendor who has a little more detailed plan, maybe with some step-by-step instructions? I'll need help with the glue and screw part. Really doesn't look that bad, only a couple pieces have funny angles on the edges, it's do-able. Any further comments on the bass driver, crossover, anybody got a pic of a La Scala with the back off? Thabks for taking time to reply, Tom

Thanks everybody. Interesting seeing your responses. At least nobody said it was completely dumb. Yeah, I thought about buying a used set, but where's the challenge? Anybody with a fat checkbook can do that, and I don't have a fat checkbook. I like to do stuff myself, often turns out real good. Thanks, John for the plans. I'll take awhile and look them over. I know a guy who has a real nice carpentry shop, that helps. Also helps that I fixed the engine in his race car a couple times. Tom

Hi, All Nice board. I'm an moderator on a another UBB board, this one looks good to me. Here's the deal: I have a set of Heresy's that I bought new in 1978, they've never been abused and sound just like they did then. Can't claim that for my ears, tho'. I really wanted La Scala's then, couldn't pop for the cash. Now, after spending a couple months lurking your board, I'm sniffing around the edges of building a set with most of my components. Here's what I have, looked the other night, this is the first time the back has been off either of these. I found: woofer K-22 Squawker K-55V 9/23/77 Tweeter K-77 Crossover Type E two big silver Caps 2uf T2A woofer out of phase with squawker and tweeter? I've looked around for plans, haven't found anything good. Anybody got a pointer to some? On ebay there's all kinds of stuff, I'm not very confident in it. I take it I would need a 15" woofer, I see all these dozens of variations on them, can somebody point me to a simple way to get what I need? Will my crossover work for this? And the big question, is this worth doing? I need all the help I can get with music, my ears are damaged by years of shooting and racing open exhaust cars, but I can't usually crank the volume way up to compensate. Any and all reponses will be appreciated, even if it's along the line of "why would you want to do something as dumb as that?" Tom