rebuild M311

Mojori
Mojori Posts: 6
edited April 2009 in Vintage Speakers
I am replacing the woofers in a set of M311's, any suggestions as to which woofers to use ?
Post edited by Mojori on
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  • Mojori
    Mojori Posts: 6
    edited April 2009
    I have decided to use a pair of these since nobody offered any advise !

    5 1/4" Polk Audio Woofers (4 ohm) Shielded # on back is R10AC-W

    Woofer Specifications

    5.25" Polly Cone Shielded Woofer
    Impedance 4 ohms
    Weight 3 pounds each
    Revc - 3.4679 ohms
    Fs - 56 Hz.
    Zmax - 68 ohms
    Qes - 0.4969
    Qms - 9.2893
    Qts - 4717
    Le - 0.3484 mH (at 1 kHz.)
    Vas - 0.3586 Cu. Ft.
    BL - 0.1401 N/A
    Sensitivity - 90 dB
    Frequency response 40 Hz. to 7 kHz.
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  • Mojori
    Mojori Posts: 6
    edited April 2009
    I will be wiring the polk M311's in series to create a 16 ohm impedence to run as my center channel speaker. The reason for this is that at 8 ohms the center channel seems to override the rest of my speakers, thru experimentation I've found that the 16 ohm load matches the audio out put of my other speakers in volume & overall compatibility to my ears.

    Any thoughts or comments on this are welcome.:o
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  • Mojori
    Mojori Posts: 6
    edited April 2009
    Well, with no help from you guys I bought the Polk replacement speakers & just decided to build a center channel speaker out of them with a 2-way cross-over & a tweeter, turned out great !!
    I also rebuilt the 3II's which the rubber surround was trashed on the woofers, no foam repair kit, or anything like that I used denim, elmers glue, & black spray paint, they sound great again & I did'nt have to buy a kit or replacement speakers, it was real cheap & easy, no cost.

    Thanks everyone who helped me out on this ,
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  • zarrdoss
    zarrdoss Posts: 2,562
    edited April 2009
    ok I have to see a picture of this, and welcome!
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  • Mojori
    Mojori Posts: 6
    edited April 2009
    Thanks for welcoming me & I will post pics as soon as I am able (sorry about being sarcastic)

    Thanks,
    Mojorisin
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  • zarrdoss
    zarrdoss Posts: 2,562
    edited April 2009
    dont sweat it, sometimes we get so involved in other posts we get lost
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