speaker stuffing

w_coyote
w_coyote Posts: 66
edited August 2009 in Speakers
ok just curious here. i have 2 pair of the rt55i speakers and was looking to replace the crossover caps to see if i could get a better sound. when i was looking at the crossover i saw one set has polyfil stuffing and one set does not. so i was wondering what does the polyfil do, is it benificial, should i stuff the other speakers or take it out of the one that have it. thanks
Post edited by w_coyote on
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  • Toolfan66
    Toolfan66 Posts: 17,366
    edited August 2009
    I would put polyfil in the other speakers.
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  • TECHNOKID
    TECHNOKID Posts: 4,298
    edited August 2009
    TOOLFORLIFEFAN wrote: »
    I would put polyfil in the other speakers.
    +1 on this as the stuffing is used to isolate and eliminate some of the cabinet from resonating.

    Cheers!
    TK
    DARE TO SOAR:
    “Your attitude, almost always determine your altitude in life” ;)
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  • potee
    potee Posts: 610
    edited August 2009
    I put polyfill in both my sub and my CS2. they both sound better. Just make sure its fire proof. Oh! don't overstuff or they'll sound muffled. Good luck and tell us how you like it.

    potee
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  • w_coyote
    w_coyote Posts: 66
    edited August 2009
    thanks to all for the responses as i wasn't sure which i needed to do. don't know what my subs have in them(never looked) but now have another question. if i put polyfil in my speakers and subs how does that affect the ports. i have ported subs and the rt55i has a arc(think thats what its called) port. will these be affected and if so how.
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  • Face
    Face Posts: 14,340
    edited August 2009
    Only add a little at a time, preferably behind the mids/woofer, and don't block the ports.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • mhardy6647
    mhardy6647 Posts: 34,056
    edited August 2009
    FYI and FWIW: actually what the stuffing does is make the box look 'bigger' inside by absorbing (some of) the backwave's energy, converting it to heat. This is a way to get a lower f3 in a smaller (sealed) box -- it works analogously with a vented box (Helmholz radiator), too.
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  • mhardy6647
    mhardy6647 Posts: 34,056
    edited August 2009
    mhardy6647 wrote: »
    FYI and FWIW: actually what the stuffing does is make the box look 'bigger' inside by absorbing (some of) the backwave's energy, converting it to heat. This is a way to get a lower f3 in a smaller (sealed) box -- it works analogously with a vented box (Helmholz radiator), too.

    This is pretty good although it doesn't say much about the thermodynamics of box stuffing:
    http://www.danmarx.org/audioinnovation/theories.html

    To its credit, though, the Wikipedia article on speaker enclosures does mention it:
    http://en.wikipedia.org/wiki/Loudspeaker_enclosure (see under "Closed box enclosures")
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  • tonyb
    tonyb Posts: 33,028
    edited August 2009
    My gosh,we've gone from stuffing bra's,to stuffing pants,and now speakers,are you guys geeks or what?:D
    HT SYSTEM-
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