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  1. #1

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    Default Info on orig. SRS, 1.2, 1.2TL? Differences?

    I'd love to read what the differences are. Can anyone direct me to a document?

    This isn't just curiosity. I'm weighing purchase of a pair of original SRS!

  2. #2

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    Check out the Search function here on the Forum. You'll learn tons. I know I did, and still do.

    And, Welcome!
    HT: LSi25 fronts, LSiC, LSiFx surrounds, PSW1000 sub, B&K Reference 200.7 S2, Integra 9.8, Panasonic BD30K, Apple TV, DirectTV HD20, Bluejeans Cables, Kuro 5020, Harmony 880 remote

    2 Channel: SRS1.2tl, Krell FBP600, Benchmark DAC1 Pre, Squeezebox, AudioQuest Mont Blanc with spades and balanced Skys.

  3. #3

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    You might find something using search; There are differences in crossovers, drivers and cabinets, so there is difference in the sound. The 1.2 TL's being "the best", though as with everything, some people like tyhe SRS's better.
    The SRS's have the SL2000 tweeters, that you would want to change for the new silk replacements. That's $500 right there.

    $1,500? Thy would have to be in absolutely perfect condition. I would offer less.
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  4. #4

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    Quote Originally Posted by Ricardo View Post
    The SRS's have the SL2000 tweeters, that you would want to change for the new silk replacements. That's $500 right there.

    $1,500? Thy would have to be in absolutely perfect condition. I would offer less.
    THANKS! I am using the search function, but can't seem to hone in on what I'm looking for. Will continue though.

    Very interesting about the tweeters. Are these silk tweeters readily available?

  5. #5

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    Seller claims they are in top condition. I was planning to take along my laptop and Woofer Tester 3, which plots an impedance graph for ya in about 2 seconds.

  6. #6

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    Quote Originally Posted by tubino View Post
    THANKS! I am using the search function, but can't seem to hone in on what I'm looking for. Will continue though.

    Very interesting about the tweeters. Are these silk tweeters readily available?
    Yes, Polk sells them.
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  7. #7

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    Tubino,

    If they are indeed in mint condition then I would say you should buy them. These are rare speakers, they come up for sale once in a while, maybe 6 pairs per year.

    If for some reason you ever hear a pair of 1.2TL's and they sound better to you and you need to buy a pair then you will be able to sell yours.

    Once you get them you'll be joining an elite club, You'll be an owner of POLK SRS's!!!!

    I say just do it, who cares what's the difference between the SRS, 1.2 & 1.2tl's. You'll never get a straight answer on how the 3 are different. In the end it all comes down to your own ears.

    You may never get the chance to hear all 3 at the same time in order to figure it out.

    Just buy them and enjoy them!!!!

    Welcome to the Club!!!

    Lasareath
    Polk Audio SDA SRS 1.2TL's
    With new Exotic wood, Sonicaps, Mills & RDO198's - Born on 4-24-1989 and Signed by Matthew Polk!!!!


    My Polk SDA SRS 1.2TL's http://www.LASAREATH.com/


    It All Started here: http://tinyurl.com/lasareath2

    Part Deux: http://tinyurl.com/lasareath3

    Car Stereo---->http://www.salsleaf.com/leaf_stereo/index.htm<---- NEW for 2013

  8. #8

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    Thanks for the help, guys! So when I check these out, are there particular things I should look for? Are some of the drivers susceptible to foam rot, for example?

    And do you SRS guys put these against the wall, or pull out like usual speakers for better soundstaging?

  9. #9

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    Default Lasareath & google

    Quote Originally Posted by Lasareath View Post
    If they are indeed in mint condition then I would say you should buy them. These are rare speakers ...
    It might wind up being all your fault, you know! :)

    Did you know that anyone googling SRS speakers WILL find your site, without a doubt? GREAT JOB restoring those speakers, BTW!

  10. #10

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    I owned a pair 1.2tl's when they were new...had them maybe 5 years and sold them ( Kicks self in ass...I was young ) ...but I recently picked up a mint pair of SRS's and after I did the crossover upgrades I am not missing my tl's one bit...these really sound good. If they are in great shape ...grab them.

  11. #11

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    Quote Originally Posted by tubino View Post
    Thanks for the help, guys! So when I check these out, are there particular things I should look for? Are some of the drivers susceptible to foam rot, for example?

    And do you SRS guys put these against the wall, or pull out like usual speakers for better soundstaging?
    No foam...all rubber surrounds

  12. #12

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    Quote Originally Posted by tubino View Post
    Did you know that anyone googling SRS speakers WILL find your site, without a doubt? GREAT JOB restoring those speakers, BTW!
    Thanks for the complement!!!

    The surrounds on the drivers do not rot. they are made out of Butyl rubber. People use Butyl rubber for their rooves and usually they last around 45 to 50 years.

    Sal
    Polk Audio SDA SRS 1.2TL's
    With new Exotic wood, Sonicaps, Mills & RDO198's - Born on 4-24-1989 and Signed by Matthew Polk!!!!


    My Polk SDA SRS 1.2TL's http://www.LASAREATH.com/


    It All Started here: http://tinyurl.com/lasareath2

    Part Deux: http://tinyurl.com/lasareath3

    Car Stereo---->http://www.salsleaf.com/leaf_stereo/index.htm<---- NEW for 2013

  13. #13

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    Quote Originally Posted by shadowofnight View Post
    I owned a pair 1.2tl's when they were new...had them maybe 5 years and sold them ( Kicks self in ass...I was young ) ...but I recently picked up a mint pair of SRS's and after I did the crossover upgrades I am not missing my tl's one bit...these really sound good. If they are in great shape ...grab them.
    These crossover upgrades... is it mostly a matter of using higher quality capacitors, same values? I'm not usually so 'needy' about information (I'm usually more patient about scouring archives instead of asking for it), but because I'm in this town such a short time, I'm going to have to make a snap decision, very soon, for a good chunk o' change... so help is greatly appreciated!

  14. #14

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    Quote Originally Posted by tubino View Post
    And do you SRS guys put these against the wall, or pull out like usual speakers for better soundstaging?
    Most people here have them around 3 to 11 inches from the back wall. Mine are around 8" from the back wall of my living room.

    The setup of them is extremely important, usually they should be around 5 to 7 feet apart, they should be perpendicular to the back wall, they should never be toed in or out and they need as much room as possible on the sides.

    for the best SDA soundstage they need a at least a 16 foot wall. The longer the wall the better.
    Polk Audio SDA SRS 1.2TL's
    With new Exotic wood, Sonicaps, Mills & RDO198's - Born on 4-24-1989 and Signed by Matthew Polk!!!!


    My Polk SDA SRS 1.2TL's http://www.LASAREATH.com/


    It All Started here: http://tinyurl.com/lasareath2

    Part Deux: http://tinyurl.com/lasareath3

    Car Stereo---->http://www.salsleaf.com/leaf_stereo/index.htm<---- NEW for 2013

  15. #15

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    Quote Originally Posted by tubino View Post
    These crossover upgrades... is it mostly a matter of using higher quality capacitors, same values? I'm not usually so 'needy' about information (I'm usually more patient about scouring archives instead of asking for it), but because I'm in this town such a short time, I'm going to have to make a snap decision, very soon, for a good chunk o' change... so help is greatly appreciated!
    Same values...better quality...especially since the electrolytics are so old...worth the money fo sho

  16. #16

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    Quote Originally Posted by tubino View Post
    These crossover upgrades... is it mostly a matter of using higher quality capacitors, same values?
    That is exactly correct. Or least we try to get the same values. There are a couple of items that have been removed and some people claim that this improves the sound.
    Polk Audio SDA SRS 1.2TL's
    With new Exotic wood, Sonicaps, Mills & RDO198's - Born on 4-24-1989 and Signed by Matthew Polk!!!!


    My Polk SDA SRS 1.2TL's http://www.LASAREATH.com/


    It All Started here: http://tinyurl.com/lasareath2

    Part Deux: http://tinyurl.com/lasareath3

    Car Stereo---->http://www.salsleaf.com/leaf_stereo/index.htm<---- NEW for 2013

  17. #17

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    Quote Originally Posted by Lasareath View Post
    That is exactly correct. Or least we try to get the same values. There are a couple of items that have been removed and some people claim that this improves the sound.


    ^^^what he said^^^^,and be sure to call Jeff @ sonicraft.;)
    JC approves....he told me so. (F-1 nut)

  18. #18

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    I've never owned anything close, but there might be some helpful info here:
    http://www.polksda.com/

  19. #19

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    The thing about the SRS's is that you MUST use common ground amps or amps that can be made common ground, i.e. strapped JC-1 mono's. That's the only thing I hate about my SRS's is the limited choices on amps. I'd love to try the ICEpower units or the big damn MF integrateds that F1 and Hearing are running.

    Wes
    Link: http://polkarmy.com/forums

    Panasonic TH-42PHD8UK 42" HDTV | Polk Audio SDA-SRS's (w/RDO's & Vampire Posts) + SVS PC+ 25-31 | AudioQuest Granite (mids) + BWA Silver (highs) | Cary Audio CAD-200 | Signal Cable Silver Resolution XLR's | Wyred 4 Sound STP/SE Pre | Signal Cable Silver Resolution XLR's | Cambridge Audio azur 840C--Wadia 170i + iPod jammed w/ lossless audio--Oppo 970 | Pure|AV PF31d

  20. #20

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    Just buy or build an AI-I interface cable and plunge right into the world of non-common ground amps.
    "Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
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  21. #21

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    I don't think you can use the interface for non-common ground amps with the original SRS's; at least not the "stock" one.
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  22. #22

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    You can't. My mind thinks of the 1.2 and 1.2TL's as SRS's also.
    "Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
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  23. #23

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    I think every amplification option I own is common ground. But now that I am going to be parking these things in my house (and they are NOT the largest speakers I own, by a LONG shot!), I'm wondering how much power these things really want and need? Will 30 class A (SE 845) watts do it? 60 PP tube watts? After that, I haven't got much in the way of QUALITY... Anyone using tubes with these? Are they around 91db/1w/1m?

  24. #24

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    Original SRS Specifications:

    Driver Complement: Four 1 inch SL2000 silver coil dome tweeters
    Eight 6-1/2 inch trilaminate polymer bassmidrange drivers
    One 15 inch fluid-coupled subwoofer

    Size (inches): 63-1/2H x 21W x 13D

    Weight Per Cabinet: 182 pounds

    Frequency Response: 10 Hz to 26,000 Hz

    Recommended Amplification: 10-1000 watts/channel

    Crossover Frequency: 45 Hz and 2000 Hz

    Nominal Impedance: 4 ohms

    Maximum Output Level:125 dB

    Efficiency: 93 dB

    1985 MSRP: $1295 each (equivalent to $2515 each in 2007 dollars)


    Here is a thread you may find useful: Differences in SRS models

    There are others also.
    Last edited by DarqueKnight; 12-16-2007 at 09:46 PM.
    "Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
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  25. #25

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    Quote Originally Posted by DarqueKnight View Post
    Frequency Response: 10 Hz to 26,000 Hz
    Recommended Amplification: 10-1000 watts/channel
    Maximum Output Level:125 dB
    Efficiency: 93 dB
    Frequency response of TEN hertz??? WTF? How many db down at, say, 20?
    125 db output??? That gives my Tannoy DMT 15's a run.
    Efficiency 93, impedance always over 4 by my measurements... rated min power is 10 watts... These might work GREAT with an SE 845 amp.

    I'm not sure if these will be my all-time favorite speakers (I'm coming from a very different sound, with Tannoy dual concentric point source...), but one thing is for sure: these Polks sure draw a friendly generous bunch. Thanks for all this help, guys!

  26. #26

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    Your Welcome Tubino, Stick around, you'll have a hell of a good time here!

    Post some pics of your gear, we love to see other people's gear.

    My 1.2tl's with 600watts per channel move my internal organs.

    Sal
    Polk Audio SDA SRS 1.2TL's
    With new Exotic wood, Sonicaps, Mills & RDO198's - Born on 4-24-1989 and Signed by Matthew Polk!!!!


    My Polk SDA SRS 1.2TL's http://www.LASAREATH.com/


    It All Started here: http://tinyurl.com/lasareath2

    Part Deux: http://tinyurl.com/lasareath3

    Car Stereo---->http://www.salsleaf.com/leaf_stereo/index.htm<---- NEW for 2013

  27. #27

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    I like the SRS model more than the TL Models with some modification. I know I may get blasted for that comment, but I like the 4 ohms, and 93db efficiency. If you own speakers of this magnitude you need good amplification. With 4ohms instead of 6ohms, and a 2db of efficiency over the TL's you just basically added 50% to your amps power for free.
    I know this isn't a huge difference, but a lot of people like to get some serious DB every once in a while.
    One of the advantages of the TL versions is a simpler XO in the dimensional department. The SRS uses very large caps in the Interconnect department (260uf) not cheap with aftermarket caps. IF you do the XO upgrade (I highly recommend you read up on it) at least use new cheap caps for the 260uf's.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben

  28. #28

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    Quote Originally Posted by tubino View Post
    Frequency response of TEN hertz??? WTF? How many db down at, say, 20?
    I have never seen the -3 dB limits for the SRS published in any of Polk's sales literature or in the SRS manual. Stereo Review measured the SRS during a detailed review and said: "The composite frequency response was flat within +/- 4.5 dB from 20 to 20,000 Hz.". A copy of this review is posted at the www.polksda.com website.

    The -3 dB limits for the SRS 1.2 were 27 and 20,000 Hz. The -3 dB limits for the SRS 1.2TL were 27 and 25,000 Hz.
    "Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
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  29. #29

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    Quote Originally Posted by Lasareath View Post
    Post some pics of your gear, we love to see other people's gear.

    My 1.2tl's with 600watts per channel move my internal organs.
    l
    These cabinets with Tannoy Monitor Gold 15s will produce 100db+ of clean music, on a few watts, and the drivers display almost ZERO cone excursion even at 110db:


    The backloaded horn loads the driver so effectively that it is loafing along at 110db. Excursion is sometimes presented as a positive thing, as if more is better. It's okay if the driver can do it, but actually doing it always means more distortion, so it's even better if the driver NEVER has to have much excursion to produce SPL's. I'm not afraid to make cones move generally, but the honest truth is that I believe I would probably damage household items if I ever cranked it to that point with Tannoy 3833 drivers in those cabinets. I got crazy (120db) loud with them, and STILL the cones barely moved.

    I'll do more in a self-introduction thread.

  30. #30

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    Quote Originally Posted by Ricardo View Post
    I don't think you can use the interface for non-common ground amps with the original SRS's; at least not the "stock" one.
    Okay, now I own a pair of original SRS, and want to use them with non-common ground amps. The speakers have the original cable, with a pin/blade connector. I see the AI-1 cable instructions, and am able to make it... but will it work? I'm still looking for info on common ground vs non-comm ground, links much appreciated.

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