RandG

I think you're exactly correct no room is the same or do we listen with the same ears, except at the high-end HIFI store where it always seemed to sound perfect until you got it home. My room size is 20'L x 16'W x 8'H and the seating arrangements are about 5' in. I also think where you are actually seated in the room makes a big difference as well. I think part of the difference I could be hearing is that I am now 15' away from the speakers instead of 10.' Terry also reminded me that I'll need to listen for more than a day to truly evaluate the sound. Some of what I am hearing could also just be in my mind, because I want to hear a difference, entirely possible and debatable. Nevertheless it sounds good now I'll let you know what think in a couple more days.

When I got my La Scala’s I could not place them in the corners due to furniture (wife) issues. This week-end I finally after months of negotiations, got the OK from the wife to re-arrange the space. OMG, I know this is not a mod, but it is definitely an upgrade from my previous setup. The Bass is now smoother, fuller and more pronounced, the separation is also very much improved. I have them set to about a 30 degree toe in; furniture issues again prevent a 45 degree placement. The placement has done for the low end what the 511’s did for the top end. It’s like having a new set of speakers. I’m not sure even if I am going to hook the sub back up. Inpatient as I am I could not wait for the final setup, I jury-rigged it so I could get a preview of the sound. I am still planning on adding in my new electronic crossover in a tri-amp configuration and hopefully adding the 902’s , mids are still too bright. (Dennis (djk) is the deal still on?). I also have to paint and re-carpet the entire room, one of the wife’s conditions. ….so all of you LS’s owners out there who don’t think your LS is producing enough bass, if you haven’t already, try them in the corners!

Terry, I sent you a email Randy

tc, GPA is charging $90.40ea. for replacement 902 diaphragms. I sent you a new PM Randy

Way to go djk. There it is............... Rand, I have a pair of NIB never used 902 8 ohm diaphragms from GPA. I also would let go cheap. tc OK, this is all coming together perfectly.......so you guy's how much is cheap?

Cool, I left a message with Bill at GPA and hopefully I will hear back from him soon.

Thanks Blvdre, I guess I was a little late their gone already! They may have been a just little more than I wanted to pay for used anyways!

Thanks djk for the links and extra info. I did purchase this crossover, after reading your recommendation of it. ...so I think I have decided to find a pair of 908's or 909's since my CT125's will be handling the higher frequencies. The 902's does seem to be suited more for two-way operation and is more expensive on the open market. I can always upgrade to 902’s being that 908/909 diaphragms can be replaced with a 902's diaphragm. If anyone on the board has a pair of 902,908 or 909’s that they want to let go of, I would be highly interested. I would buy them new directly form GPA but I just can’t afford that right now and will need to settle for used ones. Thanks guys for the recommendations on the crossover frequencies, gives me a great starting point to experiment with. Randy

Cool, it's good to know I'm on the right track and someone else is headed down the same path! I know diehard 902 fans would say to go 2 way and let the 902 handle all the higher frequencies, how big of a mistake am I making going 3 way? I think a tweeter to top off the highs might be nice thing, but what do I know I just an amateur at this. Randy

Thanks guy's for your input. I do believe I will be going with the 902-8 option. The only thing is, I just today got a good deal on a decent electronic crossover (Fender-Sunn PCN-4) so I will be going 3 way with Bob's CT125's. What do you guys think about what the crossover points should be? I was thinking maybe 500 hz/ 7500hz. Randy

I have not heard of this mod before without porting the back as well, how much of the top did you cut out? My Professionals had the exact same original configuration as yours, but mine had K43's originally (Unfortunately I blew them out) Randy

I have been reading and learning from all of your posts for nearly a year now and I just have to share with you guys my happiness with the Altec 511b horn. I just recently added a pair to my system and I am just floored with the improvement in sound quality that they are producing. I liked my La Scala’s before, but I think I love them now! I do realize that they are not true Klipsch products anymore, but man they have never sounded better to me then they do now with these horns. My system consisted of a pair of 1976 industrial La Scala’s with K55v drivers (push pins), Bob’s tweet’s, woofers and replacement Sonicaps for the crossovers. So I guess the cabinet/bass bin, AA crossover fragments and the K55v are all that remains of the original Klipsch product, but I do believe that the sprit is still there! My boys are powered by a pair of mono Eico HF50’s rebuilt and modified to accept push and pull 6550 Tung-Sol’s by Gary Dodd. Lower bass support is being enhanced by a Velodyne HGS 10 1000w subwoofer. I am sampling Santana’ first album now and the sound that these 511b’s are projecting of the Congo’s are just simply outstanding and Carlos’s guitar has never sounded more alive! Earlier today I had listened to some T-bone Walker and a little Traffic and oh my god, I don’t know if you can relate to my music, but Traffic’s “John Barleycorn Must Die” album with these horns just leave me in awe of the musicians who created this album and also of the ability of these 511b’s to reproduce it! I think I have almost make it to heaven, sonically speaking, but heaven does seem to be lacking a little natural bass at lower levels and some clarity in the mid’s at higher levels. The quest seems to be never ending; I am now trying to figure out why I got into this in the first place (if only I could have been satisfied with the JVC). I guess the next step may be to add a pair of Altec 902’s and an active crossover giving me the ability to add my Carver SS Amps to the lower end. After this mod the cabinet/bass bin will be last remaining component of my original La Scala’s, I hope I will still be welcomed here. Any other suggestions would be welcomed and greatly appreciated!

I really don't have a clue what version of LaScala I have now. I do know that they are unfinished plywood with brass metal corner braces (trim). The xovers are AA's and the drivers consist of the K-43, Alnico K-55-V and updated Bob Crites tweeters. FYI: I decided not to do the port mod at this point in time, so I contacted Bob for new woofers and a cap kit. They will be on their way on Monday, Yeah! In the meantime I will be checking and testing my system for any faults that could of cause this. I'm hoping it is as Dennis has suggested and these poor old boys have just been too overworked for too many years. Thank you guys again for your help, I truly appreciate it! I let you know how it all turns out. Randy

Thanks speakerfritz, Neil and Gil! Your info has been very beneficial and I appreciate your collective knowledge. I very much agree Gil, I really need to find out where this problem originated. I did get the woofer removed and it is torn about quarter away around the center cone. It also turns out that my La Scala's are the pro version (please excuse my ignorance) the woofer is a K-43 so the question now is: do I have this one re-coned, find another K-43 or replace both with K-33's? What do you guy's think? Thanks again, Randy

Thanks Neil, your documented experience looks to be invaluable to my upcoming in endeavor - thank-you!. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> speakerfritz - I have seen those along with another used pair of K-33s on e-bay, but both state that they are 4 ohms. My La Scala's are listed as being 8 ohms, can you mix and match ohms in the same box?