Recent content by Jazzman53

  1. J

    Martin Logan Theater Panel Rebuild

    Hi all, I just rebuilt the stat panel in a Martin Logan Theater center channel speaker. These speakers are no longer supported by ML, so anyone who had one with a dead panel was SOL. But that ain't necessarily so... I attempted to copy/paste the write-up from my blog page to here but the...
  2. J

    Is Your Loudspeaker Perfect For You?

    I'm wondering if that's a commercially marketed speaker or a one-off that some very talented person built. I'm guessing it's electrically segmented (otherwise it's flat panel would be very beamy). It's a beautiful speaker, driven with a valve amp and it probably sounds as good as it looks...
  3. J

    Is Your Loudspeaker Perfect For You?

    I can't say that I've ever heard a "perfect" speaker but... yes, I can say that my speakers are perfect for me. That is; balanced, sufficiently dynamic, and spooky-real clarity. And the fact that I designed and built them myself is pretty rewarding too. I've been a music lover and wanna-be...
  4. J

    Do you owe it to yourself to audition the latest ESL designs?

    Ahh; YES. No speaker is perfect but I do wish everyone could hear some the the better ESL designs. I'm sure many would find their sound addictive. I must first disclose my bias favoring ESLs, which I've championed for years, and in particular my latest DIY design referenced below. In my...
  5. J

    Yet another DIY Ripol sub project

    Yes, I will sell them at a good price but shipping would likely be quite costly. You can PM me for the price. I can't quote shipping but in the US, the materials cost for a pair of these subs is $868, not including labor.
  6. J

    Yet another DIY Ripol sub project

    I've received requests for an easier-to-build version of my Ripole sub so I've drawn one up that omits the rounded edge members; living the plywood edges exposed. Below is a screenshot of the drawing. If anyone wants the CAD drawing just PM me an email address.
  7. J

    Yet another DIY Ripol sub project

    FYI: I recently learned of a German company, Modal Akustik, marketing a Ripol subwoofer in collaboration with the inventor, Axel Ridtahler. And it happens that the Modal Akustik sub and my sub use the same Peerless SLS 12 woofers. Six Moons Audio reviewed the Modal Akustik sub and said this...
  8. J

    Yet another DIY Ripol sub project

    Yes, but it's perhaps better described as s modified H-baffle, insofar as the ESL's triangular-H base is integral to the baffle. Here's a video from a few years ago of my Jazzman MkIII ESLs playing with my first/much larger Ripole subs:
  9. J

    Yet another DIY Ripol sub project

    I am aware of the Ripole's characteristic chamber resonance, which is rather loud and peaks at around 250Hz in Ripole the size of mine. Some builders add a passive notch filter to tame the chamber resonance but I prefer to avoid exciting it by crossing mine over at 80Hz using the 48db/octave...
  10. J

    Yet another DIY Ripol sub project

    Update Thursday 12/15/22: My new Ripole subs are finally finished and I've been playing some very demanding bass tracks this evening...from Malia & Boris' album Convergence to Bela Fleck's Flight of the Cosmic Hippo-- and they sound ridiculously good. As with every Ripole I've heard; I can't...
  11. J

    Yet another DIY Ripol sub project

    I'm quite impressed with the Peerless SLS woofers, which just seem to do everything well. That is; they have a very low FS with good excursion needed for subs, yet they still play cleanly to 1KHz. They also have progressive suspension that prevents them from being damaged when they bottom out at...
  12. J

    Yet another DIY Ripol sub project

    Update Wednesday 12/14/22 Waiting for the woofers to arrive--- I think the new/smaller Ripoles will look very nice :cool:
  13. J

    Yet another DIY Ripol sub project

    Update Monday 12/12/22 All pieces were stained yesterday and this morning sprayed with the first coat of clear satin polyurethane.
  14. J

    Yet another DIY Ripol sub project

    Hi All, I'm building a new pair of Ripol subs for a friend. I've built several pairs previously but these will be a bit smaller/more compact. Height and depth are reduced by 1/2” and width reduced by 1/8". The woofers are the same 12” Peerless SLS’s. Ripol physics seem counter-intuitive at...
  15. J

    Craig’s Humble System

    I too had an opportunity to hear Craig's system a couple of years ago, when he still had the big Mac's powering the Strad's. The system and room synergy was something to behold. I could listen all day without fatigue... simply amazing! Especially impressive was the seamless integration of...
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