Installed No-Rez on back and sides, Removed from sides

Stew
Stew Posts: 645
edited March 2014 in Vintage Speakers
I finally got around to installing No-Rez in my SDA 2B-TL’s. I actually did this a few weeks ago but haven’t had time to post.

After re-reading the old posts on No Rez, Sonic Barrier, Black Hole, etc., I came to the following conclusions: 1) don’t use too much or it’ll suck the life out of the speakers; 2) don’t crowd the mid-woofers. I was still debating whether to install strips on the back wall only or back and sides. I decided to start with four 4” x 8” strips in each speaker – one behind each mid-woofer and one on each side. I installed the side strips a couple of inches back from the drivers.

After I put them back together, I immediately noticed an improvement in midrange clarity – but where did all my bass go?? I didn't use much and I still managed to suck the life out of my speakers! They sounded clear but very polite.

I opened them up again and removed the side strips. Much better!! The midrange clarity is still there but the punch is back. Compared to where I started (no No-Rez), bass is tighter but just as punchy. Some passages sounded a little boomy before but now the boom is gone. Mid range is considerably more clear. The improvements are noticeable at low volume and really pronounced at higher volumes.

This is one of the easiest tweaks I’ve ever done – other than doing it twice. Highly recommended for back walls of 2B’s.
SDA 2B-TL (Sonicap/Solen/Mills, Erse Super Q, Rings, Spikes, No-Rez)
1000VA Dreadnought
Dared SL-2000a (Siemens & Halske TM 12AT7WA's, Brimar 5Z4G)
Jolida JD-100a (Sylvania BP TM Gold Brand 5751's), NAD C275BEE, Blue Jeans

RTiA3, Onkyo TX-SR605
Post edited by Stew on
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Comments

  • drumminman
    drumminman Posts: 3,396
    edited March 2014
    Good on ya! I used Black Hole in my 2.3TL's and heard the same results you describe. It really is a cheap, high bang for the buck tweak.
    "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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  • BKphoto
    BKphoto Posts: 409
    edited March 2014
    does this take the place of the factory insulation or in addition to...?
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • Toolfan66
    Toolfan66 Posts: 17,243
    edited March 2014
    BKphoto wrote: »
    does this take the place of the factory insulation or in addition to...?

    Leave the factory polyfill in the speakers..
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  • BKphoto
    BKphoto Posts: 409
    edited March 2014
    sounds good...
    Marantz 1152 DC- Denon DP 1200, Soundsmith Carmen MKII- ADS L980 - Blue Jeans IC's
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  • leftwinger57
    leftwinger57 Posts: 2,917
    edited March 2014
    Stew, I had the very same effect and conclusion using B-H5 and was the only mechanical mod that I questioned. It was an aquired listening experiance because I had thought I liked the boomyness of the stock cabinets. It did change the sound that dramatcally. I did leave the strips in after many hours and came to the conclusion that it was more refined and still got the bass I wanted. All polyfill was rerolled and put back and I only used 3" wide x 8'' long strips that did not impead into the passive cavity. No sound deadening treatments was put on any side walls.
    2chl- Adcom GFA- 555-Onkyo P-3150v pre/amp- JVC-QL-A200 tt- Denon 1940 ci cdp- Adcom GFS-6 -Modded '87 SDA 2Bs - Dynamat Ext.- BH-5- X-Overs VR-3, RDO-194 tweeters, Larry's Rings, Speakon/Neutrik I/C- Cherry stain tops Advent Maestros,Ohm model E

    H/T- Toshiba au40" flat- Yamaha RX- V665 avr- YSD-11 Dock- I-Pod- Klipsch #400HD Speaker set-

    Bdrm- Nikko 6065 receiver- JBL -G-200s--Pioneer 305 headphones--Sony CE375-5 disc
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  • Stew
    Stew Posts: 645
    edited March 2014
    I used 3 inch x 8 inch strips as well. I'm not sure why I said 4 inch in my original post.
    SDA 2B-TL (Sonicap/Solen/Mills, Erse Super Q, Rings, Spikes, No-Rez)
    1000VA Dreadnought
    Dared SL-2000a (Siemens & Halske TM 12AT7WA's, Brimar 5Z4G)
    Jolida JD-100a (Sylvania BP TM Gold Brand 5751's), NAD C275BEE, Blue Jeans

    RTiA3, Onkyo TX-SR605
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  • amb426amb1
    amb426amb1 Posts: 148
    edited March 2014
    All polyfill was rerolled and put back and I only used 3" wide x 8'' long strips that did not impead into the passive cavity. No sound deadening treatments was put on any side walls.[/QUOTE]

    When changing the large inductor and the Tweeters in my new 2.3's i noticed the poly fill crammed in behind all mid/woofers and tweeters with nothing behind the PR. Do I understand correctly to remove poly place this product in strategic strips directly behind mid/woofs then pack poly back in? How thick is the material described for strips and good supplier to purchase from?
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  • On3s&Z3r0s
    On3s&Z3r0s Posts: 1,013
    edited March 2014
    amb426amb1 wrote: »
    When changing the large inductor and the Tweeters in my new 2.3's i noticed the poly fill crammed in behind all mid/woofers and tweeters with nothing behind the PR. Do I understand correctly to remove poly place this product in strategic strips directly behind mid/woofs then pack poly back in? How thick is the material described for strips and good supplier to purchase from?

    You're correct on placement... affix the damping material to the back of the speaker cabinet and then put the polyfill back between it and the drivers.

    I'm not sure about the No Rez, but the Blackhole 5 is 1.375" thick (from Sonic Craft's website). They sell it in large 24" x 27" sheets for $69.95, but right now they are running a 20% off sale.

    http://soniccraft.com/products/damping/blackhole5.htm
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  • leftwinger57
    leftwinger57 Posts: 2,917
    edited March 2014
    Being from Iowa I can't help you w/ the B-H5 because I got sheets and scraps from a C/L ad for $18. The Dynamat was a great find for free. I scoured some auto resto places and they do not use the stuff any more. They said try car audio installer places and sure enough I found a place near me and asked them. The reply was we just did a trunk and have scraps laying around and they gave it to me. Not much is needed for both products and they are cut up so one doesn't need full sheets.

    http://cnj.craigslist.org/ele/4339605962.html
    2chl- Adcom GFA- 555-Onkyo P-3150v pre/amp- JVC-QL-A200 tt- Denon 1940 ci cdp- Adcom GFS-6 -Modded '87 SDA 2Bs - Dynamat Ext.- BH-5- X-Overs VR-3, RDO-194 tweeters, Larry's Rings, Speakon/Neutrik I/C- Cherry stain tops Advent Maestros,Ohm model E

    H/T- Toshiba au40" flat- Yamaha RX- V665 avr- YSD-11 Dock- I-Pod- Klipsch #400HD Speaker set-

    Bdrm- Nikko 6065 receiver- JBL -G-200s--Pioneer 305 headphones--Sony CE375-5 disc
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  • Stew
    Stew Posts: 645
    edited March 2014
    I purchased No Rez here for approx. $40 + shipping:

    http://gr-research.com/norez24x27sheet.aspx

    Sheets are 1-1/16" thick
    SDA 2B-TL (Sonicap/Solen/Mills, Erse Super Q, Rings, Spikes, No-Rez)
    1000VA Dreadnought
    Dared SL-2000a (Siemens & Halske TM 12AT7WA's, Brimar 5Z4G)
    Jolida JD-100a (Sylvania BP TM Gold Brand 5751's), NAD C275BEE, Blue Jeans

    RTiA3, Onkyo TX-SR605
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  • On3s&Z3r0s
    On3s&Z3r0s Posts: 1,013
    edited March 2014
    Stew wrote: »
    I purchased No Rez here for approx. $40 + shipping:

    http://gr-research.com/norez24x27sheet.aspx

    Sheets are 1-1/16" thick

    It's cool that they show the Blackhole and NoRez side by side on that page. I like the cosmetics of the Blackhole a lot better.
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  • amb426amb1
    amb426amb1 Posts: 148
    edited March 2014
    Stew wrote: »
    I purchased No Rez here for approx. $40 + shipping:

    http://gr-research.com/norez24x27sheet.aspx

    Sheets are 1-1/16" thick

    Thanks for the info. I'll check fleebay for scraps or place an order for new. does it matter if the poly fill is actually contacting the mid/woof baskets and i saw one club member indicating use of the resonant material behind the PR.
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  • Stew
    Stew Posts: 645
    edited March 2014
    The poly fill is against the back of the drivers on mine. Don't put any damping (dampening?) material in the PR cavity. Do a search and you'll find where a few people tried that with bad results.
    I have most of a sheet of No Rez left over. PM me if interested.
    SDA 2B-TL (Sonicap/Solen/Mills, Erse Super Q, Rings, Spikes, No-Rez)
    1000VA Dreadnought
    Dared SL-2000a (Siemens & Halske TM 12AT7WA's, Brimar 5Z4G)
    Jolida JD-100a (Sylvania BP TM Gold Brand 5751's), NAD C275BEE, Blue Jeans

    RTiA3, Onkyo TX-SR605
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  • amb426amb1
    amb426amb1 Posts: 148
    edited March 2014
    Stew wrote: »
    The poly fill is against the back of the drivers on mine. Don't put any damping (dampening?) material in the PR cavity. Do a search and you'll find where a few people tried that with bad results.
    I have most of a sheet of No Rez left over. PM me if interested.

    Stew, cant seem to send you a PM. Only need the two strips and the 2.3's only have the two speakers on the one bank. How much shipped to Spirit Lake,IA
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  • Stew
    Stew Posts: 645
    edited March 2014
    Got your PM and sent reply. Post if you don't receive.
    SDA 2B-TL (Sonicap/Solen/Mills, Erse Super Q, Rings, Spikes, No-Rez)
    1000VA Dreadnought
    Dared SL-2000a (Siemens & Halske TM 12AT7WA's, Brimar 5Z4G)
    Jolida JD-100a (Sylvania BP TM Gold Brand 5751's), NAD C275BEE, Blue Jeans

    RTiA3, Onkyo TX-SR605
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  • TennMan
    TennMan Posts: 1,266
    edited March 2014
    Stew, Would you have four (4) 3" x 8" pieces left over for my 2bTLs? If so PM me with cost to 37763. Thanks.
    • SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · BH5 · Dynamat
    • Crossover upgrades by westmassguy
    • Marantz 1504 AVR (front speaker pre-outs to Adcom 555)
    • Adcom GFA-555 amp · Upgrades & speaker protection added by OldmanSRS
    • Pioneer DV-610AV DVD/CD player
    • SDA CRS+ · Hidden away in the closet
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  • Stew
    Stew Posts: 645
    edited March 2014
    TennMan wrote: »
    Stew, Would you have four (4) 3" x 8" pieces left over for my 2bTLs? If so PM me with cost to 37763. Thanks.

    Amb426amb1 has dibs if he wants the sheet. If not, I'll post it for sale and give you 1st dibs.
    SDA 2B-TL (Sonicap/Solen/Mills, Erse Super Q, Rings, Spikes, No-Rez)
    1000VA Dreadnought
    Dared SL-2000a (Siemens & Halske TM 12AT7WA's, Brimar 5Z4G)
    Jolida JD-100a (Sylvania BP TM Gold Brand 5751's), NAD C275BEE, Blue Jeans

    RTiA3, Onkyo TX-SR605
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  • TennMan
    TennMan Posts: 1,266
    edited March 2014
    Stew wrote: »
    Amb426amb1 has dibs if he wants the sheet. If not, I'll post it for sale and give you 1st dibs.
    Thanks.
    • SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · BH5 · Dynamat
    • Crossover upgrades by westmassguy
    • Marantz 1504 AVR (front speaker pre-outs to Adcom 555)
    • Adcom GFA-555 amp · Upgrades & speaker protection added by OldmanSRS
    • Pioneer DV-610AV DVD/CD player
    • SDA CRS+ · Hidden away in the closet
    · Share on FacebookShare on Twitter