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  1. No clear coat, just plated. I would be...

    No clear coat, just plated.

    I would be concerned with the teeth of the hole saw leaving burrs on either side of the gap.

    That's why I use mylar shim stock built up to .057". Won't damage the...
  2. The best adhesive to use is an elastomer modified...

    The best adhesive to use is an elastomer modified cyanoacrylate with accelerator. Adhesive on the magnet, accelerator on the top plate. Lube the gap surfaces with a silicone grease or Krytox grease....
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    Since factory kits are no longer manufactured for...

    Since factory kits are no longer manufactured for these drivers and the aftermarket parts available have become quite good, there is lots of new possibilities to be had with these cores.

    I have...
  4. Factory sweep test specs is 500-1200hz @2.83...

    Factory sweep test specs is 500-1200hz @2.83 volts for 8 ohm, 3.5 volts for 16 ohm. I actually go 200Hz to 20KHz to make sure there is no weirdness. You can damage your hearing with too much long...
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    Yes... I was shocked and heartbroken to find...

    Yes...

    I was shocked and heartbroken to find Ken and his girlfriend were killed in that accident. We spent some quality drive time with Steve Schell, going to Westlake Audio to tour the factory...
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    If the surrounds are coated with the viscous oil...

    If the surrounds are coated with the viscous oil known as 'goop'... set the speakers face up on a turntable and apply acetone with a bristle paint brush to soften and reflow the goop. The terry towel...
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    It's not easy to always tell the history of an...

    It's not easy to always tell the history of an AlNiCo motor...

    But...my gauss meter does tell me how much energy is in the gap. I have several pair of 136A drivers in the shop from L300s and the...
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    JBL stopped producing them several years ago,...

    JBL stopped producing them several years ago, after production moved to Mexico.

    I was told that one of the reasons the aluminum diaphragms were discontinued was the tooling had worn out and...
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    Nothing will mix well with the "goop" on the...

    Nothing will mix well with the "goop" on the surround...and it's been long discontinued.

    Since you said it's sticky...cut a small piece of Saran Wrap or a sandwich bag about an inch long...or just...
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    Well, well, well...Do I feel dumb. You're right....

    Well, well, well...Do I feel dumb. You're right. Missed it by one little digit. I'll edit my comment.
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    Honestly...the subwoofer is under powered. Greg...

    Honestly...the subwoofer is under powered. Greg Timbers said so. The potential is amazing with dual subwoofers powered at about 200 watts each.


    EDIT: Disregard my comment, unless you decide on...
  12. I got some snake oil...more like excrement...for...

    I got some snake oil...more like excrement...for you. Audiophile fuses. The world has gone mad.

    https://www.youtube.com/watch?v=f4klB7LJ9CA
  13. Thanks for posting this. I shared it over at...

    Thanks for posting this.

    I shared it over at AudioGon. It's ruffled a few feathers:D
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    Couple things could be going on. Did you...

    Couple things could be going on.

    Did you install and test with a sweep generator and listen for anomalies? Did you use any of the included shims? Have you ever had the magnets recharged? Freshly...
  15. 2123h

    2123h
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    My condolences if your dad has recently passed. ...

    My condolences if your dad has recently passed.

    The components are an 030 system, installed in custom, non-factory enclosures.

    The Library has the brochure from 1962. I have this same brochure...
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    I think in this example, it's two 2241Hs in...

    I think in this example, it's two 2241Hs in different cabinets of a stereo pair that were out of phase due to magnets with opposite polarity. And you're right, just simply reversing the leads on one...
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    I keep a few discharged 9 volt batteries on hand...

    I keep a few discharged 9 volt batteries on hand for this. 9 volt is more of a form factor for ease of use. Typically they're around 4-6 volts...and won't harm anything. Not enough current capacity.
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    Did you check each woofer with a 9 volt battery?...

    Did you check each woofer with a 9 volt battery? Always a good idea to make sure they move in the right direction.

    Years ago, OCS recharged a couple AlNiCos for me after my Full Service...
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    The "newer" drivers with the plastic one-piece...

    The "newer" drivers with the plastic one-piece terminal block is pretty fixed in color...though reverse magnet polarity making red positive would be industry correct...though black is considered...
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    If it's working well as is, I wouldn't...

    If it's working well as is, I wouldn't experiment, since new Northridge factory diaphragms aren't available, unless someone has a stash of NOS.
  22. If you don't need extreme flexibility like that...

    If you don't need extreme flexibility like that of a guitar cable or microphone cable to play live, my preference for unbalanced interconnects is RG-6 Quadshield co-ax. Compression fit RCA connectors...
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    You're right...please allow me to clarify. It IS...

    You're right...please allow me to clarify. It IS a big deal when you've got two drivers of the same model and the magnets are reverse of each other.

    The magnet polarity can be reversed/corrected,...
  24. If you need to replace the HH Smith spring loaded...

    If you need to replace the HH Smith spring loaded terminals...which you really don't...with 5 way binding posts, get the generic posts from Madisound that will take a 10 gauge wire. The post studs...
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    There's a number of methods. You could use...

    There's a number of methods.

    You could use lighter fluid or orange oil to loosen the bond...then use a tapered edge putty knife or wood chisel and tap hammer to gently pry the the tweeter body...
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