MW 6500-6503 Magnet Safegaurd

Polksaladanni
Polksaladanni Posts: 208
edited October 2008 in Vintage Speakers
I saw a post a little time ago about magnets falling off during shipping, age of the driver and in my case the dreaded spill off a stand during a party.

Us Texuns' have a well known local product even bettter than Duct Tape!

Can't fix it? J-B Weld it. Made deep in the heart of Sulpher Springs, Texas.

It's a very thick 2hr epoxy that gives you plenty of time to work with it.

You can mix the 2 parts (I prefer Taco Bueno hot sauce cups) wait 30min
and go to town spreading it in the groove between the frame and magnet structure. A thin popsicle stick, end of a plastic spoon/fork works fine.

I did this now because of "see above" after I recapped all the M4s to give to the bro in-law.

It ain't purty, but you can hit em with a bag of hammers and the magnet won't fall off.

Picture 169.jpg


Picture 170.jpg


Picture 172.jpg


Obviously do this before the magnet drops because they do not have pins for realignment.

Optical illusion in the pic the magnet looks crooked from the line of epoxy.

Paul
Post edited by Polksaladanni on

Comments

  • HB27
    HB27 Posts: 1,518
    edited October 2008
    I like your thinking. It's a good idea to do it NOW to all your older mids. I've had the magnets fall off just playing out the old monitors. I've been doing this for a couple of years now. I don't use JB weld on them but I use a clear drying speaker repair glue. The JB Weld would definitely be stronger though.
    Harry
  • WilliamM2
    WilliamM2 Posts: 4,781
    edited October 2008
    JB Weld is strong enough that doubt you need to go all the way around the magnet. If you apply it in 3 or 4 equally spaced spots around the magnet it should hold forever.

    It is a good idea, but I'm too lazy to pull all 8 drivers on my SDA's.
  • mmadden28
    mmadden28 Posts: 4,283
    edited October 2008
    I've used JB-Weld for decades on all sorts of stuff-even to fix a leaking high pressure leak in my car's AC lines and my Pool's 2" pipes. :cool:
    Messy to work with, and you'd better get it right the first time. ;)
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  • Polksaladanni
    Polksaladanni Posts: 208
    edited October 2008
    Yeah,

    It's messy when first mixed but if you wait the 20-30min it's a lot easier to work with. Stir it every once in awhile till you feel it get firmer.

    If you really want a cleaner look to the "unseen side" of the speaker, soak a rag in laquer thinner and wipe the excess off. That's not as vital to me than losing a driver.

    I put it around the whole magnet because I lost 2 from previous falls and it just made me feel more secure giving them to the bro in-law. Besides it's $3.00 to have enough for 4 drivers

    Paul
  • HB27
    HB27 Posts: 1,518
    edited October 2008
    Yeah,

    It's messy when first mixed but if you wait the 20-30min it's a lot easier to work with. Stir it every once in awhile till you feel it get firmer.

    If you really want a cleaner look to the "unseen side" of the speaker, soak a rag in laquer thinner and wipe the excess off. That's not as vital to me than losing a driver.

    I put it around the whole magnet because I lost 2 from previous falls and it just made me feel more secure giving them to the bro in-law. Besides it's $3.00 to have enough for 4 drivers

    Paul
    Instead of lacquer thinner I've been using nail polish remover for clean ups. Small bottle and small price.
    I like the preventative maintenance idea of "fixing" the MWs before they're broke. A little inexpensive project now saves big bucks later.
    Harry
  • Polksaladanni
    Polksaladanni Posts: 208
    edited October 2008
    I use H Depot laquer thinner by the gallon. Literally. If I'm not sniffing it, iIm using it for several other things including shooting laquer.

    http://www.polkaudio.com/forums/showthread.php?t=73634


    With speakers, it makes for a great, green curcuit board, board wash to remove adhesives and solder resin off the board.

    Cleans oil off the garage floor really well. Good for golf grip tape too.

    Paul