SDA SRS new to me

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  • pitdogg2
    pitdogg2 Posts: 24,579
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    It's very soft and will compress easily.
    Those factory gaskets in all likelihood were the same or very close in thickness.
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  • nooshinjohn
    nooshinjohn Posts: 25,100
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    Armacell will compress to the same thickness as the original gaskets.
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

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  • Gardenstater
    Gardenstater Posts: 4,186
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    The thinner and softer the better.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • skipshot12
    skipshot12 Posts: 1,002
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    Excellent.

    F1….
    Read that Wuhan mod.
    Deal around me on that one. I don’t possess the skills to even try.


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  • skipshot12
    skipshot12 Posts: 1,002
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    F1nut wrote: »
    Ima gonna add to your long list.

    The end caps are attached with threaded studs. The nuts tend to loosen over time, which will result in an air leak. So, be sure to check if they are loose. I recommend adding a lock washer to prevent the nuts from ever loosening again.

    Above is F1’s tip from earlier.
    When I got to the second speaker’s passive removal I was removing the nuts holding the bottom end cap. 3 out of the 4 nuts were actually hand tight. Removed these 3 without putting a wrench on them.
    Lock washers now on all end caps.
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  • F1nut
    F1nut Posts: 49,802
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    skipshot12 wrote: »
    Was able to order that Armacell @ our local Ace Hardware store. We’re not large enough to have a Lowe’s or Home Depot.

    The Armacell looks to be quite a bit thicker than the gaskets on my drivers.
    The ones on mine are paper thin.

    Question…
    Does the thickness of the material matter?

    The end result should be paper thin like the original gaskets.

    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

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  • ken brydson
    ken brydson Posts: 8,650
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    Gardenstater wrote: »
    The thinner and softer the better.

    Nope, not gonna do it...
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  • Gardenstater
    Gardenstater Posts: 4,186
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    I'll have to take your word for it :D
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • xschop
    xschop Posts: 4,702
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    skipshot12 wrote: »
    Excellent.

    F1….
    Read that Wuhan mod.
    Deal around me on that one. I don’t possess the skills to even try.


    Let me know if you want to experiment on 4 of them. :)
    Don't take experimental gene therapies from known eugenicists.
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  • skipshot12
    skipshot12 Posts: 1,002
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    xschop wrote: »
    skipshot12 wrote: »
    Excellent.

    F1….
    Read that Wuhan mod.
    Deal around me on that one. I don’t possess the skills to even try.


    Let me know if you want to experiment on 4 of them. :)

    Not sure I would want to experiment.
    If I had extra MW’s I’d take you up on that one.
    Not comfortable with messin’ with the only ones I have.
    But thank you for the offer,
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  • skipshot12
    skipshot12 Posts: 1,002
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    Just got a call from ace that my Armacell’s in.

    Got my last MW driver area & passive sealed this morning.
    Just have the sound deadening left for the back of the passive left.
    BH5 for the MW then back together and done with the mechanical mods.

    Gonna enjoy some tunes for a few days with my new sealed cabinets…… 😬
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  • skipshot12
    skipshot12 Posts: 1,002
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    Then, in to the crossovers.
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  • Gardenstater
    Gardenstater Posts: 4,186
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    pitdogg2 wrote: »
    It's very soft and will compress easily.
    Those factory gaskets in all likelihood were the same or very close in thickness.

    My NOS Made In Mexico MW6500 gaskets were less than half the thickness of Armacell.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • pitdogg2
    pitdogg2 Posts: 24,579
    edited October 2022
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    .
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  • plastic_avatar
    plastic_avatar Posts: 690
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    Wow. Hadn't kept up with your thread, @skipshot12

    Holy forking shirtballs.

    I don't like to use this word (because it's been namaste'd into cliché oblivion), but what a journey o.O

    And a late thank you for the Kappa and Focus reviews!

    Have you decided how you'll update your crossovers?

    The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * Ye Olde college stereo in the garage
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  • skipshot12
    skipshot12 Posts: 1,002
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    Hey p_a...

    I was just over on your thread again trying to attach the video of the dampening of my passive. It's not letting me attach the video my wife helped me with. Getting a message of "File format is not allowed."
    I'm on a mac computer and must be doing something wrong. It'll let me attach photos taken from her iPad but not videos from the same iPad.
    Hmmmm...

    Yes I have decided on the approach to update the crossovers.
    I'm going with the tried & true approach others have already done, on this site, in regards to the SDA SRS'... Sonicaps & Mills.

    F1 linked a really nice thread on the sound of different capacitors. Someone else had been kind enough to share their findings. Was a really good read.
    I was asking whether to go with Clarity Caps, Sonicaps or another brand. As others have found, on this site, caps do have different sound characteristics.
    What I concluded was that I would have loved to have gone with higher quality "higher priced" caps but I just don't have deep enough pockets to go there.

    Sure would like to figure out how to change the file format, of these videos, to whichever is needed for this site.
    I'll keep trying....
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  • skipshot12
    skipshot12 Posts: 1,002
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    Oh well, on to scraping off the old gasket glue on my passive...
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  • skipshot12
    skipshot12 Posts: 1,002
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    Was able to post video on youtube so I can paste it here. Something ain't right, still have to go to youtube to watch it. I'll keep working at it.

    Dynamat Extreme vs Ballistic Hollow Point...

    https://youtube.com/shorts/q1v7wH4dLYc?feature=share

    https://youtube.com/shorts/jjNi59DoeQY?feature=share

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  • Gardenstater
    Gardenstater Posts: 4,186
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    I think the Ballistic Hollow Point was a noticeably lower thunk frequency, especially noticeable when you struck on the hole ID edge in the back plate of frame.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • skipshot12
    skipshot12 Posts: 1,002
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    That's what I was hearing too.
    Here it's on the MW.
    The Ballistic is noticeably thicker. Not sure what that means but, I do like the looks of it...

    004htoca9yd7.png
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  • Gardenstater
    Gardenstater Posts: 4,186
    edited October 2022
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    I think you have found a better material than Dynamat Xtreme. The Ballistic is 2.2mm = 0.087 in and is 0.72 lb/sq. ft. Dynamat Xtreme is 1.7 mm = 0.067 in and is 0.45 lb/sq. ft.

    So 29% thicker but 60% heavier.

    Apparently Ballistic Hollow Point is their slightly less expensive version and is 2.0 mm thick.

    https://www.dynamat.com/wp-content/uploads/2021/03/2036-Xtreme-Arch-Sell-Sheet_Web.pdf

    https://images.carid.com/ballistic-sound/info/pdf/2018-install-bay-catalog.pdf

    Noico is 2mm = 0.79" and weighs 0.7 lb/sq. ft. so probably comparable to the Ballistic Hollow Point stuff.

    https://noico.info/products/noico-black-80-mil-2-mm-10-sqft-0-9-sqm-car-sound-deadening-mat/
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • skipshot12
    skipshot12 Posts: 1,002
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    Interesting.

    I was trying to search around and couldn't find any direct comparisons between the two.
    Wanted to make sure I wasn't making a mistake for the ease of buying at our local car audio shop.

    I don't think I should hear any difference...
    Only wrapped two MW's and the Passive in the right speaker with the hollow point.

    Couldn't imagine trying to work with the ballistic.
    There was a definite level up of difficulty working with the hollow point.
    A little harder to roll flat because of the added thickness. Around the edges, on the curves, doesn't lay as flat as the Dynamat. Definitely took more pressure with the roller.

    Does look stealthy though B)




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  • pitdogg2
    pitdogg2 Posts: 24,579
    edited October 2022
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    You know George there's all different manufactures out there, not all of us used Dynamat extreme. I actually used a product called Second Skin. It too is thicker than Dynamat extreme. When My Dynamat wedge pack showed up it was old and no longer tacky. It was dried out and cracking. After the seller asked me to use a heatgun to "rejuvenate" the butyl I asked for a refund because it didn't work. I went to a local mobile audio store and he showed me the second skin. His price was way too expensive per sheet. I searched found a seller and bought a box. (I still have 6-8 sheets) The aluminum and butyl is thicker but that also made it more difficult to work with, edges sharp as a knife as well.

    https://www.ebay.com/itm/254277927389?
    Post edited by pitdogg2 on
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  • skipshot12
    skipshot12 Posts: 1,002
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    pitdogg2 wrote: »
    It's very soft and will compress easily.
    Those factory gaskets in all likelihood were the same or very close in thickness.

    Got the original glue off the passive last night.
    Gonna try the Armacell install tonight.

    Is it an easy install, just go after it?
    Any tips on trimming? Trim first then install or trim after it's on?

    I did find the Dynamat much easier to install on passive. Trimmed after installed.
    Probably the reason I ran out of it...
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  • skipshot12
    skipshot12 Posts: 1,002
    edited October 2022
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    Bahaaaaa.....
    Who's George dogg? :D

    Ugh me Skip
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  • Gardenstater
    Gardenstater Posts: 4,186
    edited October 2022
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    pitdogg2 wrote: »
    You know George there's all different manufactures out there, not all of us used Dynamat extreme. I actually used a product called Second Skin. It too is thicker than Dynamat extreme. When My Dynamat wedge pack showed up it was old and no longer tacky. It was dried out and cracking. After the seller asked me to use a heatgun to "rejuvenate" the butyl I asked for a refund because it didn't work. I went to a local mobile audio store and he showed me the second skin. His price was way too expensive per sheet. I searched found a seller and bought a box. (I still have 6-8 sheets) The aluminum and butyl is thicker but that also made it more difficult to work with, edges sharp as a knife as well.

    https://www.ebay.com/itm/254267334843?

    I forgot about that stuff. I think you or somebody else mentioned it previously and I didn't bookmark it.

    Looks like the 80mil/2.0mm stuff (you linked the 1 mm) weighs 0.7 lb/sq. ft. which makes it spec out the same as Noico and Ballistic

    https://www.ebay.com/itm/254277927389?_trkparms=amclksrc=ITM&aid=1110006&algo=HOMESPLICE.SIM&ao=1&asc=242461&meid=d130c864d95d4027ae1d3abefbe9a775&pid=101195&rk=3&rkt=12&sd=254267334843&itm=254277927389&pmt=1&noa=0&pg=2047675&algv=SimplAMLv11WebTrimmedV3MskuWithRevOptLambda90KnnRecallV1&_trksid=p2047675.c101195.m1851&amdata=cksum:254277927389d130c864d95d4027ae1d3abefbe9a775|enc:AQAHAAABEPZqctS1aW2Gn1fMafrLrPa7%2BqLD2Pgo5GTgCDTJgIpBMBHaBHcFvdVGNBWeIytK8U7x8RargP9Bv5VZgW5ZIFMU4Uqw1As7o8YRQMyYgAmIN59Oo0EHO9xkEaoPIEl0Xp%2FxIC2rcijVNQtZTfAaI%2FmSUlZ%2B003EOBDf0uOgsTnha%2FMtxChC6wt%2B5CVrllogRXbGswHnKk%2BVuZ5jzdpYdae5MmnD%2BAIqSqQpcVestWa0XRWTdy1ZysONaihH1fk9BiYBqcMsgpIl0c6LpqbGco%2FV9HzZYf3YbUeYwqZTCS3c3p%2BKWPrdD6wqk7tDam%2FdtlfI2UQ2fpdvGjvyA8uQ%2FcRLT%2FZcvbwu%2Byiakix3tXZe|ampid:PL_CLK|clp:2047675

    Edit - Apparently I did bookmark it but did forget it lol

    https://www.secondskinaudio.com/sound-deadening/damplifier-pro

    https://cdn11.bigcommerce.com/s-5vspyxz90j/content/pdf/damplifier-pro-technical-data.pdf

    Interestingly, if you avg. out the 8 temp. modal loss factor data points for each, the Second Skin only averages 10% better BUT if you avg. the 3 for 10, 20, and 30deg C they are basically the same. So Dynamat Xtreme somehow punches higher than it's weight class lol. Or they are cheating the data...
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • pitdogg2
    pitdogg2 Posts: 24,579
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    skipshot12 wrote: »
    pitdogg2 wrote: »
    It's very soft and will compress easily.
    Those factory gaskets in all likelihood were the same or very close in thickness.

    Got the original glue off the passive last night..

    None of my factory gaskets ever had any glue on them ...NONE..

    I've done a few speakers messed with a ton of Polk speakers, NONE had gaskets glued on. I suspect you are dealing with someone else had glued on the gasket.

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  • pitdogg2
    pitdogg2 Posts: 24,579
    edited October 2022
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    https://www.ebay.com/itm/254277927389?

    Yes this is the stuff I used. I quickly picked the first on the list.

    My first post has been edited to correctly show the right thickness. Yes I have brought this up before. this time Bookmark it :p
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  • Gardenstater
    Gardenstater Posts: 4,186
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    George would be me
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
    · Share on FacebookShare on Twitter
  • Gardenstater
    Gardenstater Posts: 4,186
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    pitdogg2 wrote: »
    https://www.ebay.com/itm/254277927389?

    Yes this is the stuff I used. I quickly picked the first on the list.

    My first post has been edited to correctly show the right thickness. Yes I have brought this up before. this time Bookmark it :p

    Well. There is bookmarking and then there is remembering you bookmarked lol. I can't recommend this Bookmark Manager tool enough; Bookmarks Table.

    https://chrome.google.com/webstore/detail/bookmarks-table/eaabmhkokgaboihbikohlooneokghmcp?hl=en-US

    It has helped to turn me into the forum menace I have become lol

    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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