KLH Model One(s) and Janszen 1-30(s)

Discussion in 'Speakers' started by RxDx, Dec 21, 2015.

  1. Nordschleife

    Nordschleife New Member

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  2. Nordschleife

    Nordschleife New Member

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  3. RxDx

    RxDx Speaker collector Subscriber

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    Thank you, I will check in with them.
     
  4. RxDx

    RxDx Speaker collector Subscriber

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    I built an Eico 2080 and ran University Diffusicones (12" I think) for a long time.
    It was indeed a ton of great sound.
     
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  5. RxDx

    RxDx Speaker collector Subscriber

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    Pulled one of the 10-1/2 lb woofers tonight to peek under its skirt.
    Fairly standard bits- cast frame, though it completely surrounds the
    magnet. It does indeed look like it needs surround sealer- badly.
    The surround is bright because of the light on the front side. It also
    looks like sealer was used in the center of the cone and that it's
    cracking/peeling a little. Won't hurt to reapply here, too, I guess.

    I'm not sure if I mentioned some early production cues- the screw
    holes vary some, and some of the screws are in at an angle- T-nuts
    and all. I think the box was laid on its back, holes were drilled, nuts
    installed and the speaker screwed down. The other box mount is
    precise.

    front.jpg

    center.jpg

    back.jpg

    surround.jpg

    skirt.jpg

    meter.jpg
     
    Last edited: Jan 7, 2016
  6. RxDx

    RxDx Speaker collector Subscriber

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    Tryna decide what method for stripping the finish. I hit a small spot
    with some heat tonight and instantly filled the basement and garage
    with toxic smog. Duh. So I wait until spring or do it outside (~40°
    to 50° days now); use a chemical peel; or sand.

    finish1.jpg

    finish2.jpg

    Also not sure what finish I have.

    finish3.jpg
     
    Last edited: Jan 7, 2016

     

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  7. madmonda

    madmonda Active Member

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    Watching with interest.

    The motor structure on those woofers look massive! Do you plan on bracing the cabinet (I'm assuming there isn't any...& I admit to possibly missing a few post since last checking in).

    What do you plan on using to redope the surrounds with?
     
  8. RxDx

    RxDx Speaker collector Subscriber

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    The cabinets already have a wall between the two halves
    inside that goes front to back, top to bottom. I suppose I
    could add a side-to-side brace, but I'm not sure it would
    make much difference. There might even be something
    already in there. I just have to pull all the stuffing which
    is major sticky.

    The sealer surround I'm using is from RoyC.

    brace.jpg
     
  9. RxDx

    RxDx Speaker collector Subscriber

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    One thing I'm tempted to do is rewire these so each woofer could
    be individually driven.
     
  10. RxDx

    RxDx Speaker collector Subscriber

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    More adventures with a woofer.

    Markings on the cone: 27.0 grams, frame 247-3

    surround1.jpg

    Pressboard, uh, piece around and covering the outside of the spider...

    spider2.jpg

    6" deep

    side2.jpg
     
  11. RxDx

    RxDx Speaker collector Subscriber

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    No further progress lately, there's a Saab 900 in my workspace needing attention.

    Trivia pics today: nameplates

    The plate from 002 is different, looks like brass, and glossy.
    The other one is probably aluminum. Weight in grams.

    nameplate1.jpg

    nameplate2.jpg weight1.jpg weight2.jpg
     
    Last edited: Jan 21, 2016

     

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  12. Johnny_Law

    Johnny_Law AK Member Subscriber

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    Apologize if I missed it - did you look at the Janzen ES panels yet? Curious to see your progress through them, if they don't work.
     
  13. RxDx

    RxDx Speaker collector Subscriber

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    Yes, they don't work. One looks comprehensively fried, the other looks fine but doesn't power up.
     
  14. Johnny_Law

    Johnny_Law AK Member Subscriber

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  15. RxDx

    RxDx Speaker collector Subscriber

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    Location:
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    Broke out the sandpaper tonight... The orbital sander makes
    too big a mess, so I'm doing these by hand, unless it takes
    until spring to remove the original finish.

    The tops on mine are not original, based on one picture I've
    seen of another Model One. The other thing is they are veneered
    on the front and one side- mirrored sides. Based on the serial
    numbers, I don't think these were purchased together. The
    black paint on the sides is also not original.

    However, it looks like I'll strip at least one, then pull them off
    and see what's underneath.

    top1_01-27.jpg

    side2-01-27.jpg

    corner1_01-27.jpg
     
  16. RxDx

    RxDx Speaker collector Subscriber

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    Here's the latest from the same camera angle. I thought I was scraping the finish
    off the front edge, but it was/is the actual veneer. Very thin... So I'll need some
    13/16" veneer when I start to wrap these up.

    front6.JPG
     

     

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  17. RxDx

    RxDx Speaker collector Subscriber

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    Tiny progress today, starting the sand-down after the big finish scrape-off.
    (the second cabinet)

    Very red, except for the front edge. I have a swivel top TV table from
    the same approximate era with the same finish.

    corner_659_4-16-18.jpg

    top_659_4-16-18.jpg

    side_659_4-18-16.jpg
     
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  18. RxDx

    RxDx Speaker collector Subscriber

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    Got #659 sanded and started oiling it. Beautiful red hue, though nothing pulls
    out the imperfections like a camera flash.

    sanded1.jpg

    sanded2.jpg

    oil1.jpg

    oil2.jpg

    oil3.jpg
     
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  19. audiomagnate

    audiomagnate Addicted Member

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    Mahogany. Awesome thread.
     
  20. RxDx

    RxDx Speaker collector Subscriber

    Messages:
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    Location:
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    Thank you!

    Listened to them a while the other night, and they're just so stout all the way to the
    lowest ranges. I've got some old Stromberg mids and tweets (baffle boards in the
    first picture) that I've adapted. I may make this semi-permanent, until I rebuild the
    1-30s. Sourced power supplies for them- a particular electric fence charger provides
    the 1kv necessary.

    I think this is about the 7th or 8th coat of oil. V e r y slow to soak in. I really like the
    color. A few nicks but I'm leavin' it for now. Sealed the surrounds, and it definitely
    slowed the cone rebound.

    Some flat streaks in the finish on top that simply will not shine (top center in bottom
    picture). Suggestions of a top coat, oil/poly mix? like arm-r-seal. I'd rather not go
    poly, but I can't get the blotches out.

    front_5-6-16_sc.jpg

    corner_5-6-16_sc.jpg
     
    Last edited: May 6, 2016

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