JB Weld - does it really make a difference

Michael8it
Michael8it Posts: 192
edited October 2011 in DIY, Mods & Tweaks
If I am going to do the tweaks, I only want to do this once :). I have read a lot of comments on JB Weld. Does it really make a difference in applying to driver magnets? If so, what exactly is it supposed to do?

Thanks,
Carver C-1, M-500 MKII, Yamaha HTR-5835, Polk RTA 12BM's (M-for mod'd).
Post edited by Michael8it on
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Comments

  • Tony M
    Tony M Posts: 11,164
    edited October 2011
    It keeps the rear magnet stucture intact!

    I lightly tapped a driver once to make it fit into a tight recess.....BAD IDEA. The speaker imediately froze up due to the magnet jaring loose and slamming tight against the frame and coil.
    Most people just listen to music and watch movies. I EXPERIENCE them.
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  • heiney9
    heiney9 Posts: 25,197
    edited October 2011
    It keeps the magnet from falling off. As the drivers age the original glue weakens and a sharp, blunt force to the cabinet could cause it to fall off. If it does, the voice coil shifts and the driver freezes up and is toast. This is very good piece of mind. It has nothing to do with making them sound better. Just reinforcement to keep the magnets from possibly falling off in the future.

    You keep asking a lot of very basic questions that have been answered 100's of times, perhaps get your read on.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • Michael8it
    Michael8it Posts: 192
    edited October 2011
    Ah... Thanks to both of you. For the price of JB Weld it sounds like it is worth it.
    Carver C-1, M-500 MKII, Yamaha HTR-5835, Polk RTA 12BM's (M-for mod'd).
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  • cnh
    cnh Posts: 13,284
    edited October 2011
    +1, I have some sitting on my desk at the moment, will probably do the drivers in my new Monitor 10s soon! Never hurts to be safe, especially when your speakers are in good working order!

    cnh
    Currently orbiting Bowie's Blackstar.!

    Polk Lsi-7s, Def Tech 8" sub, HK 3490, HK HD 990 (CDP/DAC), AKG Q701s
    [sig. changed on a monthly basis as I rotate in and out of my stash]
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  • Tony M
    Tony M Posts: 11,164
    edited October 2011
    Don't you have to apply it to the underside as well as the top of the magnet? I think so. Yep,

    see post #17 and apply it like that . If you have alot to do, It'll save you some money.

    http://www.polkaudio.com/forums/showthread.php?122119-My-SDA-CRS-Upgrade-Thread&highlight=weld
    Most people just listen to music and watch movies. I EXPERIENCE them.
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