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  1. #1

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    Cool SDA 1C's are ready for the upgrade bug

    "OK" My 1C's will be hitting the upgrade table soon. (like this weekend)
    I am going to take these minty looking 1C's completely apart.

    I will be redoing the wood caps in a dark stain or piano black paint, the paint shop wants to see them first before they commit to the piano black paint,

    The grill cloth will be replaced,

    The drivers and passive radiators will be dynamated, and mortited,the drivers will be JB welded in a few spots around the magnets.

    The SL2000 will be replaced with RDO-194's,

    The crossovers will be upgraded with sonicaps and mills,

    The binding posts will be upgraded to Vampire BPHEXCB binding post
    (still debating on a third set for a upgraded interconnect cable with bananas)

    And last but not least these babys will be spiked....

    I am thinking about making a set of binding post interconnect mounting plates(not because they need it just because I can) out of delrin.

    Don't think I am missing anything, this will take me a few weeks to do as I will not rush it nor am I in any hurry. So say goodbye to a minty condition set of stock 1C's.





    I will update this thread as I move forward...:D

    Here is one reason the polk forum should not shut down...

    Peace,

    Larry,
    No Way But The Hard Way, So Get Used To It!!!

  2. #2

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    Default Have Fun

    Sounds like a great project!!!!
    I still need to break out the drivers on mine and dynamat and mortite them.
    I am not sure they have been out of the holes since new and hesitant to bust the seal on them. (PR's excluded)
    On a personal note, please throw out some photos on the JB weld mod.
    This keeps the magnets from shifting, no?
    Nathan
    Home Rig

    SDA-1C Studios ('Pimped') I know they are only studios, but hey.
    Polk 1000p Center
    Pioneer Elite SC35 Receiver (Pre/Surround and Amplification duties!!!!)
    Sunfire Cinema Grand 5X200-Now in storage after repairs
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    Stepped up to name brand Speaker Cables and interconnects!
    Monitor 7's, 10's, SDA 1B's, 2B's, 2.3TL's, all in storage waiting for me.
    Sales Rating #1!!

  3. #3

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    Very nice!!! I like the JB idea in case they get transported in the future.
    Have fun man.

    One more thing:
    (still debating on a third set for a upgraded interconnect cable with bananas) DO IT.

  4. #4

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    will these be replacing your 1.2? if only for some time huh?

  5. #5

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    Cool. Have fun. The only thing I don't like is going piano black paint. Personally I love the look of wood grain. Even dark. The black paint I think would make them resemble studio's but if that's your preference, go for it!! I might change my mind when I see them. One or two other mods to consider are lining the boxes with rigid insulation and stuffing 1/2 to 3/4 with polyfil. Geoff727 did that with mine and they sound unreal. He also built an isolation box around the tweeter arrays inside the cabinets. This helps the tweeters not be affected by the cabinet becoming pressurized as the 6 1/2''s pump. Lastly he also re-drilled the mounting holes on all drivers and put in threaded inserts and mounted the drivers with allen T-nuts. A very classy looking finish for mounting hardware. Just a few suggestions. Take from it what you will. With the tweets and crossovers you will hear a giant difference. Have fun.

    Kelvin
    SDA-1C (full mods)
    Eico ST-70 Integrated Tube Amp fully rebuilt and modded
    Rega Planar 3 TT/Shelter 501 MkII
    Nitty Gritty 1.5FI RCM
    The Clamp
    Revox A77 Mk IV Dolby
    Thorens TD160/Mission 774 arm/Stanton 881S Shibata
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  6. #6

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    Very nice. My 1C studios will live vicariously through your 1C's for the time being. Someday I'll do the same. I'm interested to know more about what you are dynamatting and mortiting and why/what you improve by doing so.
    _____________________________________________
    Home Theater: polkaudio Modded SDA SRS 2.3TL's, LSiM706c, 4 X TC265i Rears, SVS PB12 Plus/2
    Pioneer Elite SC-67, Sunfire Signature Cinema Grande 400, Oppo BDP-83

  7. #7

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    Dynamat usually goes on the speaker baskets to stop any ringing and mortite is used around mounting flanges to create a better seal causing the box to be more air tight and improve the effect of the passive radiator.
    SDA-1C (full mods)
    Eico ST-70 Integrated Tube Amp fully rebuilt and modded
    Rega Planar 3 TT/Shelter 501 MkII
    Nitty Gritty 1.5FI RCM
    The Clamp
    Revox A77 Mk IV Dolby
    Thorens TD160/Mission 774 arm/Stanton 881S Shibata
    Nakamichi CR7 Cassette Deck
    Rotel RCD-855 with tube output stage
    Cambridge Audio DACmagic Plus
    DBX 3BX-DS
    DBX 224-DS
    ADC Soundshaper 3 EQ
    Ben's IC's

  8. #8

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    Quote Originally Posted by WastelandWand'r View Post
    Sounds like a great project!!!!
    I still need to break out the drivers on mine and dynamat and mortite them.
    I am not sure they have been out of the holes since new and hesitant to bust the seal on them. (PR's excluded)
    On a personal note, please throw out some photos on the JB weld mod.
    This keeps the magnets from shifting, no?
    Nathan
    yes it is to help keep the magnets from shifting, I did my 1.2tl's and it took some time to do all the drivers..

    Quote Originally Posted by Conradicles View Post
    Have fun man.

    One more thing:
    (still debating on a third set for a upgraded interconnect cable with bananas) DO IT.
    Thanks, Yeah I am sure I will do the binding posts for the interconnect..

    Quote Originally Posted by zarrdoss View Post
    will these be replacing your 1.2? if only for some time huh?
    Only till I finish the grill cloth and wood caps on the 1.2tl's

    Quote Originally Posted by Fongolio View Post
    Cool. Have fun. The only thing I don't like is going piano black paint. Personally I love the look of wood grain. Even dark. The black paint I think would make them resemble studio's but if that's your preference, go for it!! I might change my mind when I see them. One or two other mods to consider are lining the boxes with rigid insulation and stuffing 1/2 to 3/4 with polyfil. Geoff727 did that with mine and they sound unreal. He also built an isolation box around the tweeter arrays inside the cabinets. This helps the tweeters not be affected by the cabinet becoming pressurized as the 6 1/2''s pump. Lastly he also re-drilled the mounting holes on all drivers and put in threaded inserts and mounted the drivers with allen T-nuts. A very classy looking finish for mounting hardware. Just a few suggestions. Take from it what you will. With the tweets and crossovers you will hear a giant difference. Have fun.

    Kelvin
    Thanks Kelvin for the other ideas I will keep them in mind for sure..;)
    No Way But The Hard Way, So Get Used To It!!!

  9. #9

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    I love these project upgrades with photos! Larry, and others before,Thanks for sharing this with us!;)

    I'll compile mine all together one day on my SDA-SRS's and SDA-CRS's like your doing here. Hear that AL, we need this forum for our Polk audio speaker endeavors.:D
    Most people just listen to music and watch movies . I am glad to be a part of a select group that tries to take our auditory and visual senses to a higher level: we EXPERIENCE them.... GOT SDA?...GOT SUNFIRE? ...GOT Maggies?

  10. #10

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    I'm all for the tweeter, cap, resistor upgrades, but I love the way the 1C looks. Maybe slightly darker stain on the wood, but not piano black....You'd be making them look like Mirage speakers if you did that! Good luck with the upgrades.

  11. #11

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    ^^^^^^^^^^^^^^^what he said^^^^^^^^^^^^^^^6666
    JC approves....he told me so. (F-1 nut)

  12. #12

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    Wink 1 gutted

    Well I have 1 torn down...


    No Way But The Hard Way, So Get Used To It!!!

  13. #13

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    Looks like fun Larry. That's gonna be my next project in a few weeks. How does the glue look on the internal bracing and the corners? Are you doing the xovers yourself?
    SDA SRS 1.2TL's w/ RD-0198's, Sonicap, Mills, Armacell, SDA 1C's w/Clarity Cap ESA; PA, Mills; SDA 2B TL's; SDA 2's w/RD-0194's; Monitor 10's w/peerless tweeters
    Yaqin MC-30L integrated tube amp

  14. #14

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    Quote Originally Posted by michaeljhsda2 View Post
    Looks like fun Larry. That's gonna be my next project in a few weeks. How does the glue look on the internal bracing and the corners? Are you doing the xovers yourself?
    The glue looks great but I may be doing an internal mod to the cabnets after talking to Ben.

    I may or may not do the crossovers myself. I have everything here to do it myself but have thought about just sending them to Ben. as his soldering skills are better then mine.
    No Way But The Hard Way, So Get Used To It!!!

  15. #15

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    Quote Originally Posted by TOOLFORLIFEFAN View Post
    The glue looks great but I may be doing an internal mod to the cabnets after talking to Ben

    Can you describe what internal cabinet mod you are doing ??

  16. #16

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    Additional bracing? Sonic Barrier?
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  17. #17

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    Well I bit the bullet and ordered some BLACKHOLE 5 for the back walls, and some Sonic Barrier for the side walls top and bottom as well.

    I also have my new binding posts on the way as well.

    I sure hope my investment in these is worth it. My only worry is that I will want to put the Sonic Barrier and/or BlackHole 5 in my 1.2tl's :)
    No Way But The Hard Way, So Get Used To It!!!

  18. #18

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    Larry,

    Nice looking project!! I have the same exact speakers and just received the upgraded Crossovers and IC cable back from Ben. I got the RDO-194's in them and spiked...First listening was a half hour ago and they sure sound great! From what I understand, there is a good 100 hour break-in time and they improve....these are truely awesome speakers for their size! I also prefer the wood look as well, but the Gloss black does look amazing as well.

    Good luck, and keep the pics and updates coming...I will follow closely

  19. #19

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    Thanks,

    I will keep it updated as I go, I should have some more pics this weekend as I start the wood caps, and drivers.

    You will keep hearing them get better as they reach 300 hours. if you have not dynamated the drivers and passive's do so. that tweek is just as awesome as the spikes.



    Quote Originally Posted by Hamatym View Post
    Larry,

    Nice looking project!! I have the same exact speakers and just received the upgraded Crossovers and IC cable back from Ben. I got the RDO-194's in them and spiked...First listening was a half hour ago and they sure sound great! From what I understand, there is a good 100 hour break-in time and they improve....these are truely awesome speakers for their size! I also prefer the wood look as well, but the Gloss black does look amazing as well.

    Good luck, and keep the pics and updates coming...I will follow closely
    No Way But The Hard Way, So Get Used To It!!!

  20. #20

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    Default Dynamat Extreme

    Pictures Of the drivers and passives being Dynamated.








    No Way But The Hard Way, So Get Used To It!!!

  21. #21
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    Nice work Larry.

    Wow your sheet of Dynamatt E is very crinkly. I wonder why. Mine are as smooth as a baby's bottom.

  22. #22

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    Default Wood Caps

    Well I had trouble getting one of the bottom caps off, the other three came off with ease. Polk must have used a little too much glue, to me it looks like liquid nail. as you can see it took a couple of chunks out of the wood cap.
    (better that then the cabnet) I went to Home Depot and got some Plastic Wood, this stuff works great, and filled the holes and sanded them down, I might have been able to leave them as they were and filled them with a little liquid nail when I put the caps back on, but it was bothering me.

    I lightly sanded the caps and put some black stain on them (2 coats of stain)
    after that I put on a coat of polyurethane. don't judge the picture just yet as it is only one coat, and I will be lightly sanding between each coat till I put on about 10 coats of polyurethane.






    No Way But The Hard Way, So Get Used To It!!!

  23. #23

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    Looking good !!

  24. #24

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    Quote Originally Posted by leroyjr1 View Post
    Looking good !!
    Thanks Leroy!!!
    No Way But The Hard Way, So Get Used To It!!!

  25. #25
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    Looks good Larry! Are you still dizzy?:D;)

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    Quote Originally Posted by hearingimpared View Post
    Looks good Larry! Are you still dizzy?:D;)
    Thanks Joe!!

    Yep just a little, and I am about to go out and do the second coat..
    No Way But The Hard Way, So Get Used To It!!!

  27. #27

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    What would one think about using Velcro on the side panels? That way if one needed to do a quick fix on a side panel, pull off fix and stick back on..

    Thoughts??
    No Way But The Hard Way, So Get Used To It!!!

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    I thought about using velcro, it can be done.

    My only fear was that it could make the side panel rest too far off of the speaker and you may see a gap. You could always give it a try, cause it would be an easy fix if you did not like it.

  29. #29
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    Quote Originally Posted by Conradicles View Post
    I thought about using velcro, it can be done.

    My only fear was that it could make the side panel rest too far off of the speaker and you may see a gap. You could always give it a try, cause it would be an easy fix if you did not like it.
    The least little bit of gap between the side panel and the box will cause some rattling. My 1.2TL had a split in the seam in the lower right of the cabinet. On bass heavy passages it rattled and buzzed until I sealed it up. The gap couldn't have been more than a hair thick.

  30. #30

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    Quote Originally Posted by TOOLFORLIFEFAN View Post
    What would one think about using Velcro on the side panels? That way if one needed to do a quick fix on a side panel, pull off fix and stick back on..

    Thoughts??
    Reinstall the correct way it'll last another 20 years.

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