Sound Dampening Foam questions

vulcan
vulcan Posts: 91
edited March 2013 in DIY, Mods & Tweaks
Has anyone used some of the sound abatement foams like NoRez or Sonic Barrier
inside their SDA model speakers and where did you place it? Did you think it helped improve the
sound quality? I think I want to use some NoRez in mine, the reviews are good.
If you have pics too that would be great, thanks.
Craig
Polk Audio SDA 1C, Klipsch Legend KLF 20, Klipsch Chorus II
Post edited by vulcan on
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  • pitdogg2
    pitdogg2 Posts: 25,571
    edited December 2012
    get you search on there are several folks who have done just that most with favorable results.
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  • pitdogg2
    pitdogg2 Posts: 25,571
    edited December 2012
    http://www.polkaudio.com/forums/showthread.php?139331-SDA1C-Mods-started

    near the end of the thread
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  • drumminman
    drumminman Posts: 3,396
    edited December 2012
    I've not used No Rez, but I've read that it's good.

    What I did use is Black Hole. See my write up here: http://www.polkaudio.com/forums/showthread.php?128159-Black-Hole&highlight=black+hole+TF66

    It absolutely improved the sound of both my 2.3TL's and RTA 12C's, de-congesting the midrange - didn't know it was congested till I heard the speaks with the BH installed. I highly recommend this stuff.

    I wouldn't waste money on sonic barrier.
    "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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  • Conradicles
    Conradicles Posts: 6,092
    edited March 2013
    Bump
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  • thsmith
    thsmith Posts: 6,082
    edited March 2013
    I used norez and placed it in 3" strips behind the MW and tweeters keeping the factory fill in place.

    I had done several other upgrades when I did this but I recall that the bass had improved texture and increased punch.

    394033_341860305836183_2041273512_n.jpg
    Speakers: SDA-1C (most all the goodies)
    Preamp: Joule Electra LA-150 MKII SE
    Amp: Wright WPA 50-50 EAT KT88s
    Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
    Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
    Cables: Mits S3 IC and Spk cables| PS Audio PCs
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  • Conradicles
    Conradicles Posts: 6,092
    edited March 2013
    thsmith wrote: »
    I used norez and placed it in 3" strips behind the MW and tweeters keeping the factory fill in place.

    Thanks thsmith! How did you come to the conclusion to use that amount? Did some other polkies try that as well with good results?
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  • thsmith
    thsmith Posts: 6,082
    edited March 2013
    Conradicles wrote: »
    Thanks thsmith! How did you come to the conclusion to use that amount? Did some other polkies try that as well with good results?

    I was cheap and bought one sheet and that is how it worked out dividing the material between 2 speakers and it seemed others who went down this path before had over did it with BH5 and found less was better.


    I suppose in theory with norez you could do the most if not the entire cabinet with no ill effects.
    Speakers: SDA-1C (most all the goodies)
    Preamp: Joule Electra LA-150 MKII SE
    Amp: Wright WPA 50-50 EAT KT88s
    Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
    Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
    Cables: Mits S3 IC and Spk cables| PS Audio PCs
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  • Toolfan66
    Toolfan66 Posts: 17,303
    edited March 2013
    YEP!! 3" strips behind the drivers and 2" strips along the side walls behind the drivers as well is what I did and love it!!!

    BTW I used BH5. I have wanted to try no rez for sometime but have not had the project for it just yet..
    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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  • VR3
    VR3 Posts: 28,746
    edited March 2013
    No Rez is a great product.

    The only thing I caution against is putting it too close to the midbass drivers, do not crowd the drivers.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Moose68Bash
    Moose68Bash Posts: 3,843
    edited March 2013
    Toolfan66 wrote: »
    YEP!! 3" strips behind the drivers and 2" strips along the side walls behind the drivers as well is what I did and love it!!!

    BTW I used BH5. I have wanted to try no rez for sometime but have not had the project for it just yet..

    I used Black Hole 5 behind the mids (one 4" strip behind each) and along the sides (one 2" strip on each side) in my SDA SRS1.2s. I cannot comment on what precisely the effect was, because I implemented several mods at once. Overall clarity and distnctness of midrange was definitely improved.

    Here's a picture:

    DSC_0012_226.jpg


    I second Toolfan's "Trey for Polkie of the year!"
    Family Room, Innuos Statement streamer (Roon Core) with Morrow Audio USB cable to McIntosh MC 2700 pre with DC2 Digital Audio Module; AQ Sky XLRs to CAT 600.2 dualmono amp, Morrow Elite Speaker Cables to NOLA Baby Grand Reference Gold 3 speakers. Power source for all components: Silver Circle Audio Pure Power One with dedicated 20 amp circuit to main panel.

    Exercise Room, Innuos Streamer via Cat 6 cable connection to PS Audio PerfectWave MkII DAC w/Bridge II, AQ King Cobra RCAs to Perreaux PMF3150 amp (fully restored and upgraded by Jeffrey Jackson, Precision Audio Labs), Supra Rondo 4x2.5 Speaker Cables to SDA 1Cs (Vr3 Mods Xovers and other mods.), Dreadnaught with Supra Rondo 4x2.5 interconnect cables by Vr3 Mods. Power for each component from dedicated 20 amp circuit to main panel, except Innuos Statement powered from Silver Circle Audio Pure Power One.

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  • zingo
    zingo Posts: 11,258
    edited March 2013
    I've just used regular, soft foam and it helped absorb the back wave on the mid drivers to provide a cleaner sound.
    Jake
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  • Toolfan66
    Toolfan66 Posts: 17,303
    edited March 2013
    Moose68Bash wrote: »
    I used Black Hole 5 behind the mids (one 4" strip behind each) and along the sides (one 2" strip on each side) in my SDA SRS1.2s. I cannot comment on what precisely the effect was, because I implemented several mods at once. Overall clarity and distnctness of midrange was definitely improved.

    Here's a picture:

    DSC_0012_226.jpg


    I second Toolfan's "Trey for Polkie of the year!"

    That is exactly how I have mine..
    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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