"grounding driver baskets"

VR3
VR3 Posts: 27,968
edited August 2019 in DIY, Mods & Tweaks
So in my trolling the internet for random knowledge, I came across the mention of grounding a speaker basket to ground. In different places, one person suggested actually grounding the basket to a ground plug on a standard outlet, which, sounded a little crazy.

Another site said tying a basket into the ground of the speaker circuit had benefits.

The benefits supposedly was in shielding of the voice coil.

Honestly, this sounds a little out there to me but perhaps the Polk collective has direct experience ewith such endeavors.
- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.

Comments

  • FestYboy
    FestYboy Posts: 3,861
    That's not how shielding works... So right off the bat, you're being fed BS. "Grounding " the basket might actually induce noise into the ground plane of the amp and I cannot see there being any benefit to that.
  • F1nut
    F1nut Posts: 49,708
    FestYboy wrote: »
    That's not how shielding works... So right off the bat, you're being fed BS. "Grounding " the basket might actually induce noise into the ground plane of the amp and I cannot see there being any benefit to that.

    I agree.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • westmassguy
    westmassguy Posts: 6,850
    FestYboy wrote: »
    That's not how shielding works... So right off the bat, you're being fed BS. "Grounding " the basket might actually induce noise into the ground plane of the amp and I cannot see there being any benefit to that.

    You're essentially opening a back door for a whole lot of EMI and possibly RF noise that was never there.
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  • mhardy6647
    mhardy6647 Posts: 32,926
    edited August 2019
    I can't think of a good reason to ground the basket, and (more than) a century of loudspeaker design* certainly hasn't standardized it as a 'best practice' :#

    There's all kinds of crazy 5#!t on the internet, you know?
    Remember what "Honest Abe" Lincoln said.

    zeowz5lr17b5.png

    _____________
    * Peter Jensen and the "Magnificent Magnavox" - 1915 :)
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  • VR3
    VR3 Posts: 27,968
    That's what I thought, but sometimes when you read enough stupid you begin to question your intelligence haha
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • mhardy6647
    mhardy6647 Posts: 32,926
    VR3 wrote: »
    That's what I thought, but sometimes when you read enough stupid you begin to question your intelligence haha

    Yeah, like chemtrails and scalar energy...

    B)
  • FestYboy
    FestYboy Posts: 3,861
    Holy crap guys, I just found out that the world is FLAT!!!
  • VR3
    VR3 Posts: 27,968
    Thats strange, I thought it was a pyramid
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • pitdogg2
    pitdogg2 Posts: 24,477
    FestYboy wrote: »
    Holy crap guys, I just found out that the world is FLAT!!!

    With a marshmallow middle

    rookie :D
  • kharp1
    kharp1 Posts: 3,453
    pitdogg2 wrote: »
    FestYboy wrote: »
    Holy crap guys, I just found out that the world is FLAT!!!

    With a marshmallow middle

    rookie :D

    I hate marshmallows, I'm outta here!
  • mhardy6647
    mhardy6647 Posts: 32,926
    FestYboy wrote: »
    Holy crap guys, I just found out that the world is FLAT!!!
    VR3 wrote: »
    Thats strange, I thought it was a pyramid
    pitdogg2 wrote: »
    FestYboy wrote: »
    Holy crap guys, I just found out that the world is FLAT!!!

    With a marshmallow middle

    rookie :D

    It's a darned good thing y'all've got a scientist here to set the record straight.

    ahem.

    eu9tc4uukbwv.png
  • K_M
    K_M Posts: 1,627
    Use one drop of snake oil, works better!
  • BlueFox
    BlueFox Posts: 15,251
    Okay, I admit it. I am getting old. What the heck is a speaker basket? :)
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  • F1nut
    F1nut Posts: 49,708
    It's what supports the motor, cone and allows the driver to be mounted on the cabinet.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • BlueFox
    BlueFox Posts: 15,251
    Okay. Is there a picture that shows this?
    Lumin X1 file player, Westminster Labs interconnect cable
    Sony XA-5400ES SACD; Pass XP-22 pre; X600.5 amps
    Magico S5 MKII Mcast Rose speakers; SPOD spikes

    Shunyata Triton v3/Typhon QR on source, Denali 2000 (2) on amps
    Shunyata Sigma XLR analog ICs, Sigma speaker cables
    Shunyata Sigma HC (2), Sigma Analog, Sigma Digital, Z Anaconda (3) power cables

    Mapleshade Samson V.3 four shelf solid maple rack, Micropoint brass footers
    Three 20 amp circuits.
  • F1nut
    F1nut Posts: 49,708
    Yeah, type in speaker basket.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • pkquat
    pkquat Posts: 742
    This is NOT the speaker basket F1nut is talking about. But it is some good humor.

    https://www.amazon.com/dp/B000MMVGZE

    One could also mount a free air speaker in a wicker basket hanging from the ceiling to create a speaker in a basket in a basket. Would that be a speaker in a 2x basket or speaker in a basket² ?
  • mhardy6647
    mhardy6647 Posts: 32,926
    The basket is the frame.

    cheap baskets.

    24954728816_f936ba3f96_b.jpg010 by Mark Hardy, on Flickr

    44562453875_b1f478420e_b.jpgDSC_3243 (2) by Mark Hardy, on Flickr


    32805517572_e444011b39_b.jpg
    DSC_7032 (2) by Mark Hardy, on Flickr

    stamped metal (steel, usually)
    (amusingly, all three of the drivers shown above were/are pretty good to very good sounding ones, despite their cheesy construction values)

    not so cheap baskets.

    33094025335_7680d17478_b.jpgDSC_7165 (2) by Mark Hardy, on Flickr

    14831555306_476c68b534.jpglater EV SP12B by Mark Hardy, on Flickr

    25977558672_c3929e3e67_b.jpgDSC_5736 by Mark Hardy, on Flickr


    cast aluminum or alloy
    (these are pretty good ones, too ;) )

    It actually does (or, at least, it can) matter -- a cheap, flimsy stamped basket is very resonant and doesn't provide stable alignment of the moving parts of a driver with the stationary parts. A cast basket is (should be!) much better in both respects.

    Modern drivers often use plastic, or composite, baskets that are (or, at least, that can be) strong, light, and 'precise' in construction and alignment. Relatively cheap, too ;) (the baskets, that is, not necessarily the finished drivers!)

  • tonyb
    tonyb Posts: 32,902
    Never heard of such a ridiculous idea. Does this dude eat Tide pods too ? :D
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  • decal
    decal Posts: 3,205
    Sounds like a ground loop hum waiting to happen.
    If you can't hear a difference, don't waste your money.
  • VR3
    VR3 Posts: 27,968
    Tannoy actually produced speakers with this built in

    ru6759oitzab.jpg
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • nooshinjohn
    nooshinjohn Posts: 25,034
    VR3 wrote: »
    Tannoy actually produced speakers with this built in

    ru6759oitzab.jpg

    And you trust the Brits with electronics?
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  • mhardy6647
    mhardy6647 Posts: 32,926
    And you trust the Brits with electronics?

    Lucas.
    Prince of Darkness.

    s3uqost21iqp.png
  • Viking64
    Viking64 Posts: 6,646
    VR3 wrote: »
    Tannoy actually produced speakers with this built in

    ru6759oitzab.jpg

    And you trust the Brits with electronics?

    I certainly don't trust them with brake fluid. :p
  • txcoastal1
    txcoastal1 Posts: 13,124
    mhardy6647 wrote: »
    And you trust the Brits with electronics?

    Lucas.
    Prince of Darkness.

    s3uqost21iqp.png

    Would that be the likes of liquid smoke ?
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  • mhardy6647
    mhardy6647 Posts: 32,926
    txcoastal1 wrote: »
    mhardy6647 wrote: »
    And you trust the Brits with electronics?

    Lucas.
    Prince of Darkness.

    s3uqost21iqp.png

    Would that be the likes of liquid smoke ?

    I guess that would be what one use for British Style Barbecue.

    B)