CRS+ mods nearing completion - question

drumminman
drumminman Posts: 3,396
in DIY, Mods & Tweaks
I'm using Gimpod's boards which are quite large. As this physically limits placement within the cabinet I'm a little concerned about the effects of the speaker magnets on the inductors, how it might do weird things to the sound. With the placement I have now the distance between the nearest magnet and inductor is around 4 inches.

I'm thinking about wrapping the MW speaker magnets with Mu-metal or a similar product as a way of shielding the magnetic field. Can anyone see a downside to this, or have any advice to give either from experience or EE knowledge?

Thanks!
"Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer
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Comments

  • drumminman
    drumminman Posts: 3,396
    Should have also asked about wrapping the SDA inductor - good idea or not?
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer
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  • nspindel
    nspindel Posts: 5,343
    I can only reply that I copied Larry's method for mounting Tony's boards in the CRS+ cabinet, and I certainly haven't noticed any issues, and speaking for Larry I don't think he has either. My advice would be to proceed as planned and if you find any issues maybe go back and revisit. But I think you'll be fine without worrying about this.
    Good music, a good source, and good power can make SDA's sing. Tubes make them dance.
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  • Toolfan66
    Toolfan66 Posts: 17,297
    This^^^
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

    SVS SB16 X2

    Cary SLP-05/Ultimate Upgrade.
    Cary SA-500.1 ES Amps
    Cary DMS 800PV Network
    OPPO UDP 205/ModWright Modification
    VPI Scout TT / Dynavector 20x2
    Jolida JD9 Fully Modified

    VPI MW-1 Cyclone RCM

    MIT Shotgun 3 cables throughout / Except TT, and PC’s
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  • drumminman
    drumminman Posts: 3,396
    OK then, advice from two CRS+ masters. I'll consider it a non-issue. Almost done with these - hope to get them connected and making sound this weekend.

    I mounted the boards a little differently in an attempt to maximize the distance between the small inductors and the Solen SDA inductor. I have them on the floor of the cabinet. Something I didn't think about is these speakers are mirror imaged (like all SDA's) which means I had to really play with board placement, as it was a little different for each speaker.

    Pics once they're up and running.
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer
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  • westmassguy
    westmassguy Posts: 6,850
    Looking forward to the pics. I'm going to be reworking my CRS+s soon, and may go completely off the ranch with them.
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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