jnorv

Both Altec and JBL built many front horn loaded rear bass reflex loaded systems. This is not to say the that k33 is the optimum driver for this arangement. Jim N

I read, on one of the other speaker forums, added about 4 cubic feet of volume to the back chamber on the LS and port it, that you pick up a fair amount of bass. This guys solution was to open up the back camber to the mid range horn area, seal the back and the port it. I wasnt willing to destroy my LSs but there is no reason why you could not remove the bottom plate and build a new 4 ft^3 box on the bottom. Has anyone tried this? Jim N

Dave, I have an original LP of Mingus at Monterey that I would like to put onto a CD. I have a Turtle Beach Santa Cruz sound card but have yet found the soft ware to transfer it to CD. I am not interested in doing any more transfers so I don't want to invest in software. What are my options? Worst/best case I mail it to you and have you do it. Jim Norvell

Maybe they have downsized since you last dealt with them. They list reps in Taipei, Tokyo and San Jose. Graham, the VP of sales, seems to be unavailbale. Jim N

I have ben trying to get some infor on buying a Tripath 2020 eval board but can't seem to get their attention. And I live in San Jose. Have any of you recently contacted Tripath with good results? JIm N

I had a similar problem with my La Scala's. My problem turned out to be a loose screw holding the woofer in place. I replaced all 4 of the screws with allen head cap screws. Noise went away. Jim N

I have a pair of old Bozak cabinets I would like to offer up, before I burn them as fire wood. Size: 36 w x 18 d x 48 h. No drivers, 3/4 plywood. One has been modoified to a Karslson type. Not worth shipping. I live in San Jose, Ca, Jim N

Builder, I don't think it is quite that simple. I have tried that cut before and it never turns out what the front edge of my LS's look like. Actually for that to work the saw blade has to just kiss the fence. I have an old Sears table saw with the cast iron table so it is relatively stable. Not nearly as good as the saw I got to use in Richland, wa that had ball bearing table slides. great saw. Manhatten project leftover. Only the Feds could afford that. Jim N

I have another question for the Builder. How do you make that 30 degree cut on the front edge of the doghouse on the La Scala's? My table saw only lays of=ver to 45 degrees. Jim N

If you have any skills, the ALK parts are only about $200. Sorry Al. I really lilked mine with my LS's. Jim N

Some of us belive that Klipsch went down the tubes in the early '70's when he turned the business over to some Madison Ave slick and got away from the Heritage line.

If new Khorns are $7500, what is the price of new La Scalas? Jim N

They just passed $15k and still have not met the reserve. Jim N

Well, my wife wants me to resolve to quit poking at the liberals on our community web site,just to see them bounce off of the walls. But it is so much fun. Jim N

From an interview with Bruce Edgar in Positive Feedback (http://www.positive-feedback.com/Issue4/edgarinterview.htm), down towards the end of the article. "We've done power measurements with the horn system, and for the most part, the system will loaf along at a couple of hundred milliwatts of power. In fact, it's very hard to get a watt into it. A good loud sound level is only about 50 milliwatts in acoustical power. People have a hard time comprehending this, but actually air is a pretty poor conductor of sound. In fact, a jet airplane engine is essentially 1 acoustical watt. A loud sound in a living room is about 50 milliwatts. Well, if you have a horn speaker system that's maybe 25% efficient, the amp only has to deliver 200 milliwatts to the speakers, which corresponds pretty much to what I've measured. It's amazing how little power goes into a horn system, and I think that somewhat explains why wiring makes a difference. If you just have copper wire, the amplifier sees a very low resistant path to the speakers. When you start putting other metals like silver and copper together, you may see contact potentials between different types of metals at these very low power levels. When we tried silver, it seemed to have a colored sound"

I tried sticking it in with "" tags but it did not work. One of his sites is http://www.venhaus1.com/diysilverinterconnects.html Jim N

Actually the CB is part of the dielectric, since it separates the wire. However, the density is so low (about 5% of the solid value) that it is mostly air. I only used the 24 Ga. I did buy some 24 Ga silver but never got around to putting it together. Maybe this winter. There are lenghty threads at the AA web site (cables). There is also Chris's web site . JIm N

Caulk backer is foamed polypropeylene. It has a very low density. Comes in 1/4, 3/8 and 1/2 inch dia. Used to stuff in to large cracks before they are caulked. Get it at most building supply stores. I wrap teflon, plumbers tape around the assembly about every 6 inches to hold the mag wire in place. Jim N

CAT 5 interconnects are easy. Just take the required length of one twisted pair and put the el cheapo RS RCA's on each end. For a higher tech interconnect, I spirl wrap 24 Ga magnet wire around 3/8 caulk backer and terminate with Eichmann Bullets. JIm N

If you are going to build speakers, you need to buy Dickason's book, "Loudspeaker Design Cookbook". It is $40 and I think I got mine from Parts Express. Jim N

I just got my copy and it seems to have a comprehensive selection of SACD's. I know what I am getting for Christmas. Jim N

There are any number of HO MC cartridges that can be had in the $100-$300 range. They work just fine into the standard MM phono section. JIm N

Sell the LS's and buy something like these for the base. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=23794&item=930033483 Jim N

If you read up on the theory of Helmholtz resonators, there is an end correction for the port length terminated in an infinite baffle that is equal to .85 times the radius of the port. As a first order approximation, I would use this distance. You could, also, adjust the distance to the wall until the box frequency starts to change, determined by measuring the speaker impedance as a function of frequency. Or you could just keep moving it closer until you hear a change in the bass. Jim N

All, It has been 20 years since I did a Fourier fit from scratch. Is the Fourier constant really as simple as 1/N for a square wave? I don't want to have to go back and find my text books and resolve the equations. Thanks, Jim N