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Infinity 6 Kappa x-over recap

Discussion in 'Infinity Loudspeakers' started by musicman95, Feb 16, 2016.

  1. musicman95

    musicman95 Member

    Messages:
    74
    Location:
    Near Portland Oregon
    So this is the first time I'v ever recapped a speaker. Hadn't listened to them in a while because they were ear bleedingly bright, then someone told me that I should recap them because that might be the cause. When i went to open up the x-over there was no slack in the wires to pull it out more than an inch. I then pulled out the 10" driver to get to it and noticed that theres a fair mount of glue holding the x-over down. I stopped there for fear of breaking something. Any advice on how to get that out of there?? Also when I'm done do I need to put a sealant down around the driver?? Also is there any particular way I should put the insulation back in there? I'v read that pushing it back to give it some room is a good idea. Lastly do I need to replace all 6 caps? Or just the ones for the polydome and emit?
     

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  2. slimpikkins

    slimpikkins Super Member

    Messages:
    1,805
    Location:
    South East PA
    Those sandwich type xos are not fun to work on. To get it out have you tried removing the wires from the emit and polydome and fish them down through? You can try just replacing the tweeter and polydome caps but they may still be bright. They are not a laid back type speaker to say the least.
     
  3. dlucy

    dlucy dlucy67 (Doug) Subscriber

    Messages:
    2,054
    Location:
    Philadelphia, PA
    If you are digging in for some, wouldn't this be a good time to replace all the caps in the crossover? I've got a pair of Kappa 8's that need the same job and the price tag for all the caps using Dayton Audio brand ones from Parts Express ain't so bad. I'll be replacing the double diode while I'm in there just because it's the only other component that might need it after 30 years.
     
  4. musicman95

    musicman95 Member

    Messages:
    74
    Location:
    Near Portland Oregon
    I was looking at removing the wires but the polydome has its own cabinet/compartment (not sure what to call it) within the speaker and the wire is glued where it goes through it. Then on the x-over all the connections are also covered with glue. I just don't want to break anything. How do I go about removing the glue if possible? and when I re-glue everything can I just use a hot glue gun or is there something specific I need?
     
  5. musicman95

    musicman95 Member

    Messages:
    74
    Location:
    Near Portland Oregon
    Ya you're right. I'll just go ahead and replace them all. Is there a specific type of cap that I need? I know I need non polarity caps but that's pretty much the extent of my knowledge. You mentioned Dayton Audio why them?
     
  6. slimpikkins

    slimpikkins Super Member

    Messages:
    1,805
    Location:
    South East PA
    The glue on the wires can chiseled out carefully around the wires. The glue is part of the pita I mention about these little xos. You can try a heat gun to soften up.
     

     

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  7. musicman95

    musicman95 Member

    Messages:
    74
    Location:
    Near Portland Oregon
    Alright I'll give it a shot when I get back from work tonight. Thank you
     
  8. swechsler

    swechsler Frog Whisperer

    Messages:
    5,231
    Location:
    7th row center
    Alternatively you can cut the wires in the middle and then splice them back after you're done. Might be less destructive overall, even if you have to add a few inches of wire to make it easier to put everything back together.
     
  9. dlucy

    dlucy dlucy67 (Doug) Subscriber

    Messages:
    2,054
    Location:
    Philadelphia, PA
    Looking at the Infinity RS Kappa 6 technical sheet, I see the following caps are used:

    4.5 uF PP (SOLEN)
    0.01 uF PP (WONDER)
    5 uF PP
    25 uF NPE
    12.5 uF NPE
    100 uF NPE​

    The "PP" is for polypropylene and the "NPE" is for non-polarized electrolytic. I'm guessing the "SOLEN" is to point out using a high quality Solen brand cap and the "WONDER" is a similar high-end brand (which I've never heard of).

    I'd use Dayton Audio in my Kappa 8's because they are very good quality while being a fraction of the high end name brand prices.

    Here is what I'd order from Parts-Express.com if I were rebuilding your crossover. (I hope anyone better at this will chime in and correct me where I'm wrong).

    For the 100 uF NPE:

    027-360 Parts Express NPE 100 µF Axial 10% 100V $1.50

    For the 12.5 uF NPE (they don't have an NPE with the exact 12.5 uF value, so you just buy enough coils to add up to 12.5 uF [so you get the same corssover frequency] and just install them in series to add up to the total inductance of 12.5 uF):

    027-340 Parts Express NPE 10 µF Axial 10% 100V $0.67 +
    027-322 Parts Express NPE 1.5 µF Axial 10% 100V $0.50 +
    027-320 Parts Express NPE 1.0 µF Axial 10% 100V $0.50

    For the 25 uF NPE:

    027-348 Parts Express NPE 22 µF Axial 10% 100V $0.86 +
    027-322 Parts Express NPE 1.5 µF Axial 10% 100V $0.50 +
    027-322 Parts Express NPE 1.5 µF Axial 10% 100V $0.50

    For the 5 uF PP:

    027-232 Dayton Audio metalized polyproplene 5.1 µF 1% 250V $4.48

    For the 0.01 uF PP (WONDER):

    027-100 Audyn metalized polyproplene 0.01 µF 5% 400V $1.37

    For the 4.5 uF PP (SOLEN):

    027-550 Solen 4.3 µF 5% 400V $4.01 +
    027-632 Solen 0.22 µF 5% 700V $14.58
     
  10. sagebug

    sagebug Active Member

    Messages:
    106
    Try some laboratory grade ISO on that glue (make sure it flows under it long enough) It's like magic.
     
  11. musicman95

    musicman95 Member

    Messages:
    74
    Location:
    Near Portland Oregon
    Wow, I completely forgot to write anything after I finished the recap. Well it's been 2 years since then and they sound MUCH better with new caps. I accidentally ordered all polypropylene caps and didn't have the patience to return them to parts express and order electrolitics, so I somehow fit all of them in there. One of the caps was literally the size of my wrist! :eek: I'm sure if I posted pictures of the x-over everyone would get a good laugh out of it. But it worked and now the 6's sound smooth and detailed with minimal grain, they're my "bookshelf" speakers in my room now and get plenty of use. :)
     

     

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  12. TomBig58

    TomBig58 AK Subscriber Subscriber

    Messages:
    787
    Location:
    Chicago
    LOL mm95 I just responded on another thread you visited today. I'm thinking of recapping my 6.1's so I'm gathering info. Nice!
     
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