SDA SRS 1.2tl renovations
Boost1
Posts: 13
Big boys are all naked minus the tweeters. All parts are in hand for the upgrades, minus the crossovers that Dave at DHS is working his magic on.
-Threaded inserts
-Armacell to ensure speakers are sealed well
-Noico tape for baskets
-Silicone sealant for the cabinet
-Power grab for loose braces and speaker magnets
-Sound absorber for rear walls
-Stain and poly for walnut pieces. (considered recovering but the veneer is in very good shape)
I bought my first pair of 1.2tl's back in 1991 and kept them for about 12 years prior to selling. My brother had a pair of Klipsch K-horns and talked me in to those. Great speakers but I missed my Polks almost from day one. Well, about 7 years ago, I found these guys for an absolute steal and brought them home. I almost immediately changed out the tweeters to the 198's, upgraded the speaker/sda connecter plates, made a really nice SDA cable and pretty much haven't touched them since then. I finally have some time on my hands, so here we go. Super excited to see what these things will do when done. Thanks to all the Polksters out there that have shared their journey with upgrades. It's been a huge help in my quest to get everything I can out of these guys.
On a side note, the hardest part in taking these things apart was getting the side wood strips off without destroying the fabric. They were nailed and glued in place, so that made them alotta fun to separate.
SDA SRS 1.2tl's
Adcom GFA-585's
Adcom GFA-585's
Comments
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Never use silicone anything inside a speaker.
If your original gaskets are not damaged there's absolutely no reason to replace them. The gaskets are supposed to be paper thin.
Noico tape is completely wrong. You want Dynamat Xtreme.
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 -
My brother had a pair of Klipsch K-horns and talked me in to those. Great speakers but I missed my Polks almost from day one.
What.......... Khorns over 1.2tls? That was a big mistake and no doubt you missed the Polks from day one. Congrats to you on getting them back and good luck to you on your restoration-upgrades -
I ASSume you mean Noico Sound Deadener. Which one are you using; I see they have 80 mill, 150 mill, and 315 mill. Glad you're back on track with Polks! You're brother isn't satan by any chance is he?? jk
George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
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 -
I went with 80 mil. After comparing it and others to Dynamat, I decided to try this one. I have several friends in the area that have been using for quite some time and speak very highly of the results at a fraction of the cost.
Satan, no
but while the K-horns sounded pretty good, it wasn't even close to the 1.2's. And yes; definitely glad to be back on track.
SDA SRS 1.2tl's
Adcom GFA-585's -
So, Noico dampening sheets not tape because this is the tape. https://noico.info/products/noico-tape-finishing-sealing-tape/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 -
Definitely not the tape. These are the sheets that come in varying thicknesses. Looking back at my original post, I see that I listed tape.SDA SRS 1.2tl's
Adcom GFA-585's -
I used Dynamat Xtreme in my 1.2tl's, 4 other SDA's and the inner cabin of my SUV. Last year, I used the Noico 80 mil on 3.1tl's.I have several friends in the area that have been using for quite some time and speak very highly of the results at a fraction of the cost.
I agree with your friends and found it comparable in installation and affect. As Jesse (F1nut) states, do not use silicon because of off gasing and causticity to the drivers and XO's. Power Grab is the preferred product to seal the cabinets.
Your upgrades will make what you loved about your first set even better this time around. Congrats and good luck moving forward.➀Speakers: Polk1.2tl's (Uber Mods) ➁Pre/Amp/DAC: PS Audio BHK Signature & 250, DirectStream ➂Cables/IC's: MIT S1Bi-Wire/S1 Balanced +Avel Lindberg 1000VA "Dreadnought" ➃Power Conditioner: PS Audio P15 Power Plant ➄Power Cords: Core Power Technologies Gold, DH Labs Power Plus DIY w/Neotech NC-P301 & P311ends ➅Streaming: Roon ROCK on wifi'd NUC, TP-Link WAP, & Uptone EtherREGEN, AfterDark, Emperor Double Crown Clock, Black Modernize LPS, PS Audio AirLens⟿Ω☯☥☮⟿🔊♩♪♫♬♩♪♫♬♩♪♫♬ -
Thanks for the information, JayCee....much appreciated.SDA SRS 1.2tl's
Adcom GFA-585's -
The beasts are coming back together nicely. Thanks again to all those that have pulled these things apart in the past and posted your findings/methods, as it's been a huge help. Stripped and refinished the mahogany pieces and have those re-installed. All internals are completed....now anxiously awaiting arrival of the new hearts for these guys.
SDA SRS 1.2tl's
Adcom GFA-585's -
Nice!
Happy listening when the hearts start beating!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. -
The wood veneer is walnut not mahogany.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 -
Of course it is. I have absolutely no idea why I wrote that. Maybe too many bloody Mary's this am.SDA SRS 1.2tl's
Adcom GFA-585's -
They look great. I'd steal them but dang they look to heavy
Enjoy .. -
Nice work! They look like furniture.George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
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 -
Agree x2Don't take experimental gene therapies from known eugenicists.
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Gardenstater wrote: »Nice work! They look like furniture.
Thank you. They were in pretty bad shape and initially I thought I would have to put new veneer on them but once I got them apart and began sanding, they cleaned up nicely. Fresh stain and then a few coats of poly and there you have it.SDA SRS 1.2tl's
Adcom GFA-585's
