Kappa 9 cabs leaky

Discussion in 'Infinity Loudspeakers' started by Superampman, Sep 10, 2018.

  1. Superampman

    Superampman AK Member Subscriber

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    Just interested in opinions on the carpet style covering on the baffles. I don't see how the cabs won't have serious issues with leaking. No way you can tighten any of the drivers enough to seal them, especially the Emits. This can't help but have impedance issues as well
     

     

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  2. 7.62

    7.62 Gearhead Subscriber

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    I think you can, if your cabs have been messed with previously and it doesn't take much to buger those holes. You can keep your original screws, a trip to Ace hardware to find the correct T-nuts that fit and a commitment to install them properly should yield decent results.

    I wish I had your problem :thumbsup:.
     
  3. Superampman

    Superampman AK Member Subscriber

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    Huh?
     
  4. 7.62

    7.62 Gearhead Subscriber

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  5. Superampman

    Superampman AK Member Subscriber

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    Okay, I think you misread my op, no mention of screws there. The carpet like fabric on the baffles is impossible to compress enough to stop airflow through it.
     
  6. Bobbyd38

    Bobbyd38 AK Subscriber Subscriber

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    Any Drivers that Matter, particularly the two Woofers, should have Basket to Cabinet Gaskets. I pulled the 12" Woofers off a Kappa 8 before, and don't remember that being an issue. The Mids have their own cavity, and the EMIT itself is sealed, and I believe the Baffle is only recessed to accommodate the EMIT, not a thru hole, so sealing isn't a factor.
     
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  7. damacman

    damacman Blown and Injected Subscriber

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    Why not simply cut it with a razor, install a thin weatherstripping on the basket of the driver, and mate that directly to the baffle?
     
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  8. jazzmans

    jazzmans Super Member

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    I think you're making a tempest in a teapot.
    My brothers Kappa 9 have no lack of bass whatsoever.
    He's three hundred miles away, or I'd pop over there and pull a woofer to see if there's a gasket or not, but I really don't think you have to worry.
     
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  9. 7.62

    7.62 Gearhead Subscriber

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    Yeah now I'm curious, do you actually own Kappa 9's or are you just speculating ?

    At least as a former Kappa 8 owner ( son owns them now ) if the drivers are properly tightened they do make a tight seal, also with the amount of stuffing inside, if the Kappa 9 is the same it really doesn't allow for a lot of air movement IMHO.
     
  10. Superampman

    Superampman AK Member Subscriber

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    3,873
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    There are gaskets on all the drivers. The problem is they're very thin and might as well not be there since they sit on top of essentially carpet.
    Yes the Emits are sealed but they're not sealed against the cabs, they are in fact through holes, even the Semit. All of the drivers matter. If they didn't, they would not have installed that inadequate thin gasket on all of them. None of them sit directly against the cab except for the rear mounted Emit.
    No, they do not make anything near a "tight seal". If you attempt it you will just break the threads in the particle board and make a new, worse issue. The loose stuffing has no effect on air movement whatsoever.
    Yes, I have cut around each driver, removed the fabric, and made/installed 1/16" thick rubber/cork gaskets I made out of sheet stock. When pushed down on, the woofers now return slowly to their rest position.

    These speakers do go quite low but I always thought they should be more dynamic given the 4 12" woofers. I am still in the midst of getting them in shape so I am not yet able to compare to how they sounded in the past.
     
  11. jazzmans

    jazzmans Super Member

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    I'm telling you, there is NO lack of bass on my brothers 9's He's powering them with a pair of Pass Labs monoblock tube amps, and runs them in extended mode.
    He does NOT use a subwoofer. It's been about six months since I last heard them, we were watching films on them and they are amazing.

    I personally have five pairs of near TOTL Infinity speakers right now, and his 9's output as much bass as any of mine.
    Crescendo 3009 dual 10" woofers ported (two pair)
    RS2B dual 10" woofers sealed
    Ren 90 single watkins dual voice coil 10"

    Plus I owned Kappa 8.1 til I traded 7.62 for them, and he has a pair of 2.5 with watkins 12" that are amazing

    As to comments about the emits..... well, you can say whatever you want, my RS 2b emits have no airspace behind them whatsoever, simply mounted in the wood (no cabinet on top) my EMIMS are dipolar (on rs2b) mounted in the same wood.

    I'd suggest going 7.62's route and replace the wood screws, but your problems lie elsewhere then the mating of the woofers to the cabinet. (amplification would be my first thought, wired out of phase would be next) you are using the original wiring harness right? 7.62 said his Kappa 8 or 9 (forget which) never sounded right with a replacement new harness.

    Your 9's, do they pass the push test?
    (push in one woofer, the other woofer moves out at the same rate, and after you stop pushing, they slowly both come back to rest with amplifier OFF)
     
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  12. Superampman

    Superampman AK Member Subscriber

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    thanks for the input
     
  13. Bahamayellow

    Bahamayellow Well-Known Member

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    I have the 9s as well with no lack of bass in normal mode. In fact I have my tone control on the bass slightly down or it will knock me out of the room. I definitely do not need a sub with these. If the volume knob goes way up I start to feel the bass in the sofa I’m on. Maybe if U could send some pics of what you have done that would be helpful. I’m intrigued.
     
  14. Bahamayellow

    Bahamayellow Well-Known Member

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    716
    Jazzman ur right they are sealed tight I pushed on the top 12 inch woofer and the bottom one moved out. I would have to assume that they are very close to being airtight or sealed enough for the woofers to respond that way. Just like my dual 12 inch M & K sub that’s sealed. I was curious. Also Super let us know your findings if you found a improvement in bass.
     
    Last edited: Sep 16, 2018
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  15. 7.62

    7.62 Gearhead Subscriber

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    I just can't imagine Infinity not knowing, it's almost like saying hey let's put out thousands of defective speakers ? The 9's, 8's 7'ns and Sixes all had the same felt baffle on the front. I'm not trying to diss the OP but I wouldn't have cut that felt back like that. Also I would keep your original crossovers, maybe replacing caps but don't do the eBay thing I can tell you from experience with my Kappa 8's you'll loose the magic if it's ok to say that, the only word I have. I agree with Bahama. Pics would be neat.
     
  16. okeeteekid

    okeeteekid Well-Known Member

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    Location:
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    My k9's have an abundance of bass, if yours lack bass it could be....if you are not the original owner of the speakers.
    1 woofers wired wrong.
    2 caps gone bad in woofers crossover section.
    3 someone could have tampered with the crossover and removed the 15 MH coil or removed the R8 resister that completes the circuit.
    4 wrong amps driving them, doubtful though.
    5 wrong room placement, again doubtful.
    Untitled.png
     
    Last edited: Sep 17, 2018 at 12:01 PM
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