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JohnA

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  1. JohnA

    Bob Carver's New Tube Amp 75x2

    "Each room plays its own tune, and this amp uses the speaker as a microphone by using the speaker in reverse (the theorem of reciprocity) to ‘listen to the room," Bravo Sierra. And, No.
  2. JohnA

    Fairchild 260

    Good to hear, Dave! I'll bet it is a pleasure to hear. I'm glad you had the matching preamp!
  3. JohnA

    K-55-V Driver Specifications

    Adapters https://www.parts-express.com/Search.aspx?keyword=horn adapter&sitesearch=true A K55-V can be run down to 110 Hz, as stated in the Atlas literature, on the right horn. Most will respond adequately to 6000 Hz, again, on the right horn. Without hard data, I suspect the '80s era 2-piece phase plug K-55-V will not respond down to 110 Hz. Not knowing how much closer the diaphragm is to the phase plug, I don't even know how to guess. The K-77-? can safely respond down to 3500 Hz, as its original name, T-35, implies, but requires a steep crossover slope and a power limit of about 10 watts (2 for k-77). These are not practical limits in a 200 wpc world. The way Mr. Jansz words his questions makes it entirely unclear what he really wants.
  4. JohnA

    Gloss black La Scalas CA A fantastic deal

    Unusual. Braces well done (off center). XLR cables are not for high power, but how many tomes will you actually send over 10 watts to a La Scala indoors?
  5. If they sound muffled, dull or like the sound is not out in front of the speaker, replace the caps. They should be on the floor, near a wall. I am running 3 H1s with my La Scalas. The center channel H1 has a modified crossover that is similar to the ones in my La Scalas. It is hard to beat having all the speakers match. Three more HIIs would be better. You didn't mention subwoofers. With Heresies you need one or 4 good subwoofers. 😉
  6. JohnA

    KG4’s Sounding Poor

    The caps are NOT it. Bass is normally a room issue. Caps that need replacement cause the mids and highs to be dull, recessed and muffled. They should NOT be off the floor, as Frzn said bypass the EQ. Place them face to face and play the FM. Switch from mono to stereo. If mono has less bass, reverse one set of speaker wires. Also inspect the woofers and passive radiator for cracks in the cones and surrounds that would allow a leak. Leaks (from the cabinet, too) need to be fixed as they will affect the bass output.
  7. JohnA

    Shinall, model VLT-1

    It you have one original woofer, there may be enough numbers on the cone and frame to track down its origin and purchase a proper replacement. Please post pics. Many of Mr. Shinall's designs were Klipsch clones and could use the corresponding Klipsch woofer.
  8. https://www.klipsch.com/products/rw-1-wireless-speaker https://www.amazon.com/Klipsch-R-15PM-Powered-Monitor-Black/dp/B01A7J534G/ref=sr_1_4?ie=UTF8&qid=1536856091&sr=8-4&keywords=klipsch https://www.amazon.com/Klipsch-The-One-Walnut-veneer/dp/B01NACPDID/ref=sr_1_19?ie=UTF8&qid=1536856091&sr=8-19&keywords=klipsch https://www.amazon.com/Klipsch-Heritage-Wireless-Three-Tabletop/dp/B01M34LRMI/ref=sr_1_26?ie=UTF8&qid=1536856200&sr=8-26&keywords=klipsch
  9. WOW!!!!!!! That 15WK will pay for 2 K-33s and maybe a K-55-V! Check the slot size in throat of the bass horn (remove the woofers). there were at least 2, 3" x 13" has greater output at 400 Hz. 6" x 13"(?) was the earlier design. I can't remember it's advantage. The best sound will probably come with K-33-Es, 3 x 13 slots, K-55-Vs, Type AA xovers and square magnet K-77s. But I could not resist building tops with K-5-Js and SA-HFs to see how they sound.
  10. JohnA

    La Scala bass

    LOL! I have seen a paper that showed multiple woofers could equal the output and distortion of a bass horn. I didn't like it either, but it's there.
  11. JohnA

    La Scala bass

    There is no reason Crites woofers would not work in a La Scala just like they worked in your Belle Klipsch. There is also no reason to change your K-33s, either. The data others have published here does not show a large improvement in low bass from the porting mod. It's a good bit of work for ~3 dB below 60 to 70 Hz. djk used the design with a high-pass filter that boosted low bass and cut bass below the port resonance to protect the woofer. La Scalas will not produce bass below about 55 Hz. I found the best balance on the floor in a corner with the back corner of each speaker about 10" away from the walls. To get deeper response you need Klipschorns or Cornwalls. A good custom build with two 15s in a ported box and your La Scala's squawker and tweeter would do it. Something like a KPT-435-M https://f072605def1c9a5ef179-a0bc3fbf1884fc0965506ae2b946e1cd.ssl.cf2.rackcdn.com/product-specsheets/KPT-435-B-M-Data-Sheet-v04.pdf
  12. JohnA

    K-55-V Driver Specifications

    In addition to the above, see this: https://www.atlasied.com/pd-5vh The PD-5VH is EXACTLY the K-55-X and early spring terminal K-55-V. The early '80s solder terminal -V is modified to improve its HF output. NB: the horn it is mounted on dictates most of the driver's performance.
  13. JohnA

    Muffled Sound?

    Sounds like burned out tweeters. Too much power to the tweeters from running them too loud or too much amplifier clipping. Perhaps you got lucky and only blew a fuse in the tweeter circuit.
  14. If the tag is missing, it should be stamped in the wood near the crossover, often in the edge plys.
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