Stuffing SDA's

ben62670
ben62670 Posts: 15,969
edited June 2009 in Vintage Speakers
Well tonight has been busy. It is officially my B day today, and I am free of the kids. I stuffed my SDA's fairly full. Not tight, but full. I told my friend Jerry not to do it. I said it would interfere with the PR's working properly. Well the I was wrong. The mids, and bass are much cleaner. I used Wal Cheese poly fill. I bought a 10# box. and all I can say is I am at a much higher level. It has been a while since I have been caught up with my stuff via here, or my life. Glad I did it.
Ben
Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
Thanks
Ben
Post edited by ben62670 on
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Comments

  • geoff727
    geoff727 Posts: 546
    edited June 2009
    The SDA-1C's and Monitor 5's I upgraded both ended up with about 70% internal volume of polyfill (after treating the bare internal enclosure walls with foam). Arrived at that amount after listening tests with tests with different levels. Around 70% gave me the impression of the most coherent sound.

    So, I agree with you.

    ....And Happy B'day, Ben.
    Polk SDA SRS 2
    Polk RTA 15tl
    Polk Monitor 7C
    Polk Lsi9
    Infinity RS-II (modded)
    Infinity RS-IIIa (modded)
    Infinity RS 2.5 x 2
    Magnepan 1.6QR (modded)

    System: http://forum.audiogon.com/cgi-bin/fr.pl?vevol&1290711373
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  • ben62670
    ben62670 Posts: 15,969
    edited June 2009
    Thanks Geoff. I doubted it hard core, but my friend tried it without my blessing, and the clarity of the mids improved greatly.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • ESavinon
    ESavinon Posts: 3,066
    edited June 2009
    Happy Birthday Ben!
    SRT For Life; SDA Forever!

    The SRT SEISMIC System:
    Four main satellite speakers, six powered subs, two dedicated for LFE channel, two center speakers for over/under screen placement and three Control Centers. Amaze your friends, terrorize your neighbors, seize the audio bragging rights for your state. Go ahead, buy it; you only go around once.
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  • Face
    Face Posts: 14,340
    edited June 2009
    It makes perfect sense that stuffing behind the mids should improve coherence. Technically, there's nothing wrong with stuffing a sealed enclosure with a PR as long as keep the stuffing away from the PR. You can use some sort of netting to keep it in place. Keep in mind you're also changing the box's tuning, so it may work better in some cases than others.
    "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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