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JohnA

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Posts posted by JohnA

  1. With the correct wood putty and sealing techniques you can patch the chips and stain and they won't be seen. I had mine done professionally, so I only have a vague idea what he did, but even knowing where the chip in the "V" was I have trouble finding it. I'm not sure I can find it after 2 years. After the staining he put on a satin polyurethane. check out the front speakers on my web site. One day I'm going to have the rears redone to match (after I buy a Combat Commander and when I have $500 laying around unused).

    John

  2. Engineering became a bean-counter function when we started tracking man-hours spent on a Primevera schedule rather than work accomplished and when the nukies succeded in pushing their procedures over on Fossil Power. Now, I have to have a 37 page DCN to issue 8 engineering drawings.

    If I had one employee per megawatt (2 per for a plant under construction) I could play DCNs all day!

    John

  3. I think Gil's right (suprise!?). I looked at the schematic for the AK-3 that a Y2K K-horn would have and I believe the extra inductor steepens the squawker's high pass and it is run without a HF roll-off, just like the K-55-V. I had always thought the -M went a little higher than the -V. Based on my experience with both the -V and -Ms in my La Scalas, I'd expect the combination of the K-55-M and Type A to be a little more forward than the K-55-M/Type AK-3 combo. That's easily cured by changing taps on the autoformer. Be sure to use Solen FastCaps or Hovland Musicaps and good inductors in your homemade Type As and you'll be very satisfied.

    John

  4. I wouldn't advise using the Type A in a Y2K K-horn without mods. It has no HF roll-off for the midrange. The Type A was used with the K-55-V that naturally started rolling off at 4k. BTW, the crossover points for the Type A are 400 and 9k, but all are 6 dB/octave. try adding an inductor the roll off the squawker around 5k at 6 dB/octave.

    Otherwise, it will work fine.

    John

  5. Five Heresies and an RSW-12 or -15 would be a KILLER HT. The front 3 should be from the same year, or be modified to have the same components and network.

    Yours are probably what we've nicknamed Heresy 1.5s. They have the HII squawker and HI woofer and tweeter. You need to listen to see, but I'd bet they will be sonically close to the modern HII.

    John

  6. The bid is now $249. The reciever is probably worth that! That is from the mid-70s and is similar the my old CA-800. It could be switched from 60 real watts (45 rated) to 8 watts Class A. It was warm and soft in the bass region, but nice sounding. I like my Acurus/Parasound gear better, but the Yamaha is no slouch.

    John

  7. And we went!

    It started out with a choral concert. I didn't know what "In Association with the Chattanooga Choral Arts Association" meant until the show started. It was a little strange. One number was 3 minutes of "Halelulah". It turns out Mr. Brubeck is deeply religious and has written several choral works for his church and others. The Chattanooga Chorus is quite good, though not my cup of tea. I did enjoy the unabashed demonstration of faith.

    The second half of the show was traditional Brubeck. He is soon to be 82 and grinned like it hurt for most of the show. I think he enjoyed playing as much as we enjoyed listening. The show was at the Tivoli, a 70-year-old theater that seats 2000, or so. The band was tight and polished. They did not seem to know what Mr. Brubeck was going to play next; they just jumped in as he got to a good place. i found out later, that's part of his "style".

    If he comes to your town, don't miss him!

    John

  8. It's the audio, no doubt. Watching The Matrix on a 32" TV was never so thrilling as it was when we saw it at the Klipsch factory. The sound was played through Jubilee mains, Belle center, K-horn rears and an RSW-15 subwoofer. Gunshots in the lobby slapped your chest just like at the range! After 10 minutes, I forgot there was a screen at all! I bought the DVD as soon as I got home.

    John

  9. C&S,

    The reason to put the 511B on top of the box and build a 3 sided "fence" around it is to make it look like it's in the box, but it's not so the calculations for the box are easier. If the box is short, you could even put a top on it, ala La Scala.

    I AM talking about a bass reflex box.

    The optimum distance between the woofer and tweeter would be that smaller than the wavelength at the crossover point.

    John

  10. Don't your doors to the outside have the normal 36" opening?

    24" x 36" x 46" will equal the volume you described (about 40,000 cu. in.). That will go through a 30" door and is about the size of the original VOTT bass cabinet (imagine that!). Put your 511Bs on top. I believe I'd build a front baffle with sides for the HF horn to hide the crossover.

    John

  11. With my La Scalas, Parasound amps and ACT-3, my ears distort before the amps do. I'd heard it before, specifically at Grand Funk and Robin Trower concerts, but always thought ears couldn't "clip". They will! I recognize it now that I can do it at will. It starts with my Rat Shack meter showing about 110 dB average.

    I too found out about overpowering speakers with my subs. VMPS rates their sub drivers max. input just below the point where they will fail. i have an Acurus A-250 driving both subs. It turns out it can clear 400 watts into the 4 ohm rating of the VMPS. I fried all 4 woofers at one time. That lesson cost me $400 with a steep discount from my sympathetic dealer.

    The final consensus was that I probably wasn't clipping the amp, just melting wire and glue.

    John

  12. The minimum for a Home Theater system, besides the TV, would be a DVD player, Receiver, 5 speakers and 1 subwoofer.

    The receiver should be capable of decoding Dolby Digital (aka AC-3), DTS and creating Dolby Pro-Logic from an analog source (TV or VCR). It grows from there. While I always recommend Klipsch speakers, using them requires quality electronics. Shop carefully for the receiver. If your receiver does the decoding, you can save a little money with a cheaper DVD player, since it becomes a transport only.

    Personally, I like seperates (preamp/processor and seperate power amps), even though that runs the cost to $,$$$.

    John

  13. Technically:

    Both have the all same drivers and, for many years, the same crossover. The Belle uses a K-500 squawker horn. It must be crossed at 500 Hz. The La Scala uses the K-400 from the K-horn and must be crossed at 400 Hz. The K-500 is shorter so it will fit into the shallower Belle cabinet. Shorter horns can't go as deep. The Belle's bass horn is shallower and wider, but otherwise similar in design. The La Scala's bass horn was designed to be as compact as possible. That makes the bends "tight". The more gentle bending of the Belle's bass horn *may* allow it to reach higher frequencies.

    Aesthetically:

    The Belle is pretty. The La Scala is not; it is a PA speaker that can be finished and dolled up a bit, but it will always have visible plys at the joints.

    Sonically:

    Little difference. Some, like Tony, that have heard them side by side say you can tell them apart.

    Price:

    We all know that.

    John

  14. The wooden horn is the K-5-J. It was used in the 50s. The Metal horn is the K-400. It was used in the 60s through the 80s sometime. Now, the horn is the K-401, a composite of some kind used since the K-400. The K-55-V was used with the K-5-J and the K-400. The K-55-M was used with the K-400 and K-401. As of this year the "new" K-55-X(?) will be used with the K-401. The K-55-X is essentially the K-55-V. The K-400/401 is said to have less high frequency beaming and a smoother response curve. Others like the sound of the K-5-J better. All of mine have the K-400 and I can't verify any of the claims.

    John

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