Dynamat

NJPOLKER
NJPOLKER Posts: 3,474
edited October 2008 in Vintage Speakers
Have any of my fellow Polkers used Dynamat or similar product on the baskets of your drivers and passives?
If so, what do you think about the results?
Any suggestions on the best sizes to buy and best way to apply it.
Thanks Drew
Post edited by NJPOLKER on
· Share on FacebookShare on Twitter

Comments

  • skrol
    skrol Posts: 3,391
    edited October 2008
    NJPOLKER wrote: »
    Have any of my fellow Polkers used Dynamat or similar product on the baskets of your drivers and passives?
    If so, what do you think about the results?
    Any suggestions on the best sizes to buy and best way to apply it.
    Thanks Drew

    Funny you should ask. I just applied Dynamat to the baskets of my PRs and woofers in my RTA11TL's. This was after a friend mentioned that Polk had added damping material to the baskets of their flagship, RTA15TL. I really can't say that I have pushed the speakrs enough yet to notice the difference but it makes sense and is inexpensive.

    In the past I had applied dynamat to the baskets of the woofers in my car and did see an improvement in bass clarity.

    Stan
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
    · Share on FacebookShare on Twitter
  • MillerLiteScott
    MillerLiteScott Posts: 2,561
    edited October 2008
    I have applied it to my 2B's and RTA 11T's. I can honestly say I have not heard a difference but I sleep much better knowing it is done.:D
    I like speakers that are bigger than a small refrigerator but smaller than a big refrigerator:D
    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,391
    edited October 2008
    MillerLiteScott wrote: »
    I have applied it to my 2B's and RTA 11T's. I can honestly say I have not heard a difference but I sleep much better knowing it is done.:D

    It could be that it doesn't make much difference with the smaller baskets of the 8" PR's and 6.5" MW's. It also may only be something that is noticed in a test environment where a pulse is applied and the transient ringing is heard (measured).
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,735
    edited October 2008
    Polk never applied damping material to the baskets of any of their speakers, especially not the RTA 15TL's. If your friend's speakers had some it was applied by a previous owner.

    My thoughts on the matter. If it rings when pinged, Dynamat the sucker.
    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

    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,391
    edited October 2008
    Anyway, I wouldn't go out and buy a pack of Dynamat specifically for this purpose. If you would like a cheap alternative, go to Lowes and get some Peel & Seal (roofing material with a sticky back). I have used it in cars and other applications and it works great as a sound deadener.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,735
    edited October 2008
    Ummm....Dynamat doesn't cost much and it's specifically made for said purpose.
    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

    · Share on FacebookShare on Twitter
  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited October 2008
    Thanks guys for your suggestions.
    I think I read somewhere it can be a pain in the butt to work with. If this is true any suggestion on working with it?
    Thanks Again
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,735
    edited October 2008
    Get the Dynamat Extreme, peel and stick.
    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

    · Share on FacebookShare on Twitter
  • geoff727
    geoff727 Posts: 546
    edited October 2008
    F1nut wrote: »
    If it rings when pinged, Dynamat the sucker.

    Agreed.

    All the 6.5's and the PR's on my SDA-1C's have Dynamat, along with the Monitor 5's I just finished. Althought the SDA's got some different treatments at the same time as the Dynamat, I believe that the harmonic trail of notes/transients/whatever is a bit cleaner now.

    Maybe the spring/weight resonant system formed by the basket and magnet structure would resonate at a slightly different frequency due to the added mass of the Dynamat being stuck on the basket. Maybe, who knows. It would be an interesting experiment to find out.
    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
    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,391
    edited October 2008
    F1nut, you seem very knowledgeable of Polkaudio products and audio in general, as you should be being the Club Polk president. I was curious about your background. Do you or have you worked for Polk?

    Please forgive my ignorance.
    Stan
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,735
    edited October 2008
    My background, you ask? I'm just a grumpy old fu(k who loves audio and Polk too. :D
    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

    · Share on FacebookShare on Twitter
  • george daniel
    george daniel Posts: 12,096
    edited October 2008
    F1nut wrote: »
    My background, you ask? I'm just a grumpy old fu(k who loves audio and Polk too. :D

    skyrol,,, Jesse is very modest,, don't let that fool you,,,actually,, he's the pilot for the Polk Audio corp. jet. He is also noted to be the first at sucessfully running a two channel tube system at 38,000 feet,,,quite an accomplishment,since the source was ,,vinyl. :D:D;)
    JC approves....he told me so. (F-1 nut)
    · Share on FacebookShare on Twitter
  • skrol
    skrol Posts: 3,391
    edited October 2008
    Must be a darn good pilot, no turbulence and a big plane Or one heck of a turn table.

    Not to hijack the thread or anything...
    That's cool. I started young, dreaming of one day owning a pair of SDA's, but figured I'd start with the Monitor 7's when I could afford them. In the meantime I was designing and building speakers with the best components that Radio Shack had to offer. Then I got a job that actually paid, Polk had just released the LS line and I snagged the last pair of RTA11TL's that Bryn Mawr Stereo had for a song:D.

    I have always liked Polk's innovative designs that didn't follow the mainstream. The Dimensional Array and the use of PR's really caught my interest, not to mention that they are based in Baltimore where I was born and raised.

    OK, back to the thread...

    Last night I applied damping material (P&S) to the interior of one of my speaker cabinets. It was too late (family sleeping) to try it out with music. However, doing the thump test on the outside of the cabinet now gives a nice solid "thud". A little more but not quite scientificly, I got out my audio analyzer and taping the cones of the MW's and PR's shows a definite improvement in the transient response (reduced ringing) when compared to the non-damped cabinet. I can't wait to get home tonight and give it a listen.

    I am sure that there are better damping solutions (ie. liquid stuff) that would even work better. I just had this stuff handy and it didn't make a mess. I am sure that Dynamat Exterme would do a little better than the P&S.

    I have done several automobiles and have found that the regular Dynamat does not damp as well as P&S and it debonds with temperature extremes. However, the Dynamat Extreme is superior to the P&S in damping. Both hold up well for bonding.

    Stan
    PnS.jpg 10.7K
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
    · Share on FacebookShare on Twitter
  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited October 2008
    F1nut wrote: »
    My background, you ask? I'm just a grumpy old fu(k who loves audio and Polk too. :D

    You heard it from the horses mouth! or was it the other end?
    · Share on FacebookShare on Twitter