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JohnA

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Posts posted by JohnA

  1. Q-Man sent me these pics and asked me to put them up. May God have mercy on his ears!

    Front Wall of Sound:

    4.jpg

    Here is a close up of the right front, K-horn ala Scala:

    3.jpg

    The rear 3 channels; I believe the stands for the La Scalas are the Jensen Imperial replicas:

    1a.jpg

    A close up of the left rear:

    2.jpg

    John

  2. Yeah, Arny didn't come back did he? smile.gif

    I wish I had your tools and wood working skills. I would like to have a wooden K-400. I could finish it easily enough, but making it isn't goung to happen around here. I've got a line on an aluminum K-400 and driver; maybe I can figure out how to make it attractive.

    John

  3. Boy! Those wooden horns are exciting! I'll be really interested in how they sound. It looks like you've done a great job so far. I think you should try to make the throat as perfect as possible. Getting the wave front started out right seems like the most critical thing. Could you use some sort of router bit to help you transition from round to square, or does the adapter do that?

    How do you plan to finish them? Cherry and hand rubbed oil would have to look rich. I could imagine one and a T-35 on top of my C7 covering the upper ranges.

    John

  4. Q-Man,

    Your suggestion of strips across the back was my original idea to help fronts without changing their appearance from the front. My fronts are nicely finished already and I hate to modify them. But the rears are going to get stripped and redone, so they can be easily modified and still be finished well.

    djk, I'll make a sketch.

    John

  5. My rear La Scalas need to go in to the cabinet shop for refinishing. When I do it, I want to stiffen the bass horn at the same time. I will add a horizontal brace acros the mouth extending back to the "notch". I've been thinking that adding a 2' x 2' x 3/4" plate to the outside back of the bass horn attached with glue and screws would add mass and stiffness and reduce resonance. Have any of you done similar mods? Will this in fact add enough stiffness to control the bass horn's resonance, or is it wasted effort?

    John

  6. I have a pair of Type ALs either of you can have. I'll take 1/2 of new. You should be aware that the Type AL is designed for a 109 dB, 16 ohm midrange driver, like the K-55-M. You can use it with another driver, but you may have to modify it. Several of us, esp. Al, can help with that.

    John

  7. Assuming the K-401 is the same as the K-400 and that my memory hasn't succumbed completely to CRS Syndrome, the lower cutoff is 263 Hz. However, it will have just about lost direstional control and diaphragm loading at that point. The best crossover point is one octave above that. I don't know about the K-55-M, but it should be similar the the 1823 or 1824 at 260 to 300 - 6 or 8k Hz. You will have to call Klipsch to be sure.

    John

  8. Hi Chris,

    Caps are capacitors. They are the small, tin plated tanks with 2 terminals on top. Back in the day, the paper in oil caps Klipsch used in the Heritage Series were likely the best there was. Now, more modern materials, found by research, have made capacitors more purely capacitive, with less resistance and energy stored and released as "ringing" or other distortion. Basically, a capacitor in series blocks lower frequencies. They can be used in combination with inductors to steepen the roll-off of either a high-pass or low-pass circuit. Klipsch used more modern caps in my KLF-C7, though not the $$$ expensive ones like Hovlands. It seems like I spent $110 for Hovland caps in each of my La Scalas.

    John

  9. Al has the button I was thonking about!

    My worst pair was a house brand from Dixie Hi-Fi (who knows who that is, now?). They were a 3-way with a 12", 3" & a 1". My brother and I bought them with lawn mowing money in High School. They made noise, I'm sure they sounded awful.

    After the 3rd pair failed, we added more money and bought a pair of U.S. made Marantz (7s?) speakers. My sister is still using those, way more than 20 years later.

    John

  10. I don't know anything about HPS. Since they changed the design, and the La Scala patent has long expired, I'm sure it's O.K. Since the site said the speaker was made for HPS, I think that's a clue. smile.gif Les brags on his La Scalas with the K-43 woofer having more bass, a 106 dB rating may well be possible.

    John

  11. Chris,

    Your tweeter can be repaired. Call Sam Stafford at Techstar in Nashville, Tennessee. The

    phone # is 615-242-2925. Their address is/was 750 Cowan St. #9; Nashville, TN 37207.

    Most any Pro Audio shop should be able to fix is as well. You need a diapraghm at @ $22.

    John

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