Monitor Series: When the Magnet Fails...

Klop
Klop Posts: 5
edited August 2009 in Vintage Speakers
Hey guys,
after receiving some helpful info in my first post, I now have a chance to contribute a bit of my own.

Recently I bought a "new" set of MW 6502's & decided I'd take some time to use Polksaladanni's JB Weld insurance policy on my 4 drivers before they failed.

However, I began doubting that the location shown in his pictures was the correct area to glue when compared to the repair shown here.

So as I began prying on my seized driver, It popped apart & guess what?

2ez2v87.jpg2ur18qa.jpg

That's not the right spot!

So please update, your bookmarks, stop the presses & make note of how these things separate. ;)

The "inner plate" is not likely to ever shift as it has 4 solid mechanical attachments to the basket. What does fail, however, is the magnet & back plate (pole piece) just behind it. My picture is a little blurry, but you can see the original ring of glue on the magnet.

So if you'd like to help protect your drivers against the slip of death, apply a generous bead of JB Weld to the following areas:

1. Where the magnet ring meets the inner plate
2. Where the magnet ring meets the outer plate (pole piece)

And Polksaladanni, thanks for the JB Weld idea & I hope you'll forgive me for the correction. :)

Comments

  • skrol
    skrol Posts: 3,393
    edited August 2009
    Thanks. This is great info.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601