Difference between SDA-SRS and 1.2s?

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MysticLlama
MysticLlama Posts: 3
edited April 2009 in Vintage Speakers
Hopefully this is an easy question:

What differences are there, if any, between the original SDA SRSs and the SRS 1.2s?

I have a pair of SRS 3.1s and thought about adding a set of 1.2s eventually, and wondered if the SDA SRS pair that came up for sale are basically the same thing or if they won't mesh as well.
Post edited by MysticLlama on

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  • ben62670
    ben62670 Posts: 15,969
    edited January 2009
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    The SDA-SRS use a different crossover than the simplified 1.2's. The SRS is 4 ohms, and the 1.2's are 6 ohms nominal. The 1.2's are more sought after, but I would not turn down the SRS's if you found some in good shape in your area. You will need a beefy amp, and those big SDA's want a larger room to bloom. You need at least 3 feet on either side, and the distance between them needs to be roughly the same as the seating distance from them. room placement is key.
    Welcome to Club Polk.
    Ben
    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
  • MysticLlama
    MysticLlama Posts: 3
    edited January 2009
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    Ah, okay. So not so much better or worse, as just different?

    I'm guessing with a 4ohm stable amp the earlier ones should pull more power from the amplifier?

    I'm currently running a Carver M-1.5 (non-t) on the SRS 3.1s, which would be moved over to this.

    The other option is to use the power from the Marantz SR5003 receiver Bi-Amped @ 90w*2*2, I'm not sure how much it'd like the 4ohm load though.

    Since I have the 3.1s, if there are reasons to wait for the 1.2s, I'm in certainly no rush, just trying to understand.
  • 4406bbl
    4406bbl Posts: 194
    edited January 2009
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    I have had both original srs and 1.2tl in the same room,I would call them close,to my ears the originals had better bass,the 1.2s had smoother highs,I kept the originals because someone just had to have the tls,and I never felt the originals lacked for anything. I also have 2.3tls with rdo98 and would sell them long before I sold the srs, but opinions and rooms vary. You need a high current amp for any of them
  • ben62670
    ben62670 Posts: 15,969
    edited January 2009
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    I left out one important variable. The SRS's need a common ground amp, and the TL's can use a transformer to tie non common amps together.
    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
  • Toolfan66
    Toolfan66 Posts: 17,051
    edited April 2009
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    Ok there is a guy that lives about a mile away from me he has 2 sets of these 1.2's 1 pair needing some wood work done. the top on one speaker is split.

    My question is i noticed between the 2 sets some small Differences,

    one being the grill plates, one set had little like rivits holding them. on this same set the crossover plates has 4 extra screws/bolts in them then the other set this guy has.

    Are these just differant runs but the same?

    SDA SRS 5338 S# off one speaker of one set

    SRS 1038 S# off one of the other set

    Not sure if this helps in anyway.

    The guy wants $1250 for the set that is in great shape, and $800 for the other set that need some wood work done on them. everything else on these beast's are in great shape even the grill cloth on both sets are in great shape.

    This guy has a house full of audio equipment 15 to 20 sets of speakers he even has a set of 2B's with original box's, some electostat's and some big **** 7 feet DIYers nice job too.

    Larry.
  • F1nut
    F1nut Posts: 50,086
    edited April 2009
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    The SDA SRS, SDA SRS 1.2 and SDA SRS 1.2TL all look very similar and the model/serial number on the back isn't always accurate.
    the top on one speaker is split.

    That can only be the SDA SRS model. It will also have more bolts on the crossover panel than the other two models. That one will use the blade/blade cable while the others use the pin/blade.

    The model/part number of the tweeters and drivers can help narrow down what is what, if you can get the info.
    Political Correctness'.........defined

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    President of Club Polk

  • Toolfan66
    Toolfan66 Posts: 17,051
    edited April 2009
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    F1nut wrote: »
    The SDA SRS, SDA SRS 1.2 and SDA SRS 1.2TL all look very similar and the model/serial number on the back isn't always accurate.



    That can only be the SDA SRS model. It will also have more bolts on the crossover panel than the other two models. That one will use the blade/blade cable while the others use the pin/blade.

    The model/part number of the tweeters and drivers can help narrow down what is what, if you can get the info.

    i forgot to mention that you are right the one with the split top is BLADE/BLADE. the other set is PIN/BLADE.

    is one better then the other? i mean $800 and do some wood work sounds like a good deal to me.

    I am going to see him again tonight. I will pull a couple of the drivers and see what i come up with on the other set. he told me they are mine i just told him i wanted to do some homework to see what set i want. they both sound great.

    in the last 2 days i have had my ears on a set of 2.3's/2.3tl's/2B's/SDA SRS/ and a set of SDA SRS 1.2 or 1.2tl's i will try to figure out what they are tonight.
  • eleeut
    eleeut Posts: 5
    edited January 16
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    Tagging on to this very old thread.. I'm looking to liquidate a set of SDA SRA 1.2 in the Greater DC area US/Montgomery Co, I don't know where to begin on sorting out whether they are "base" 1.2 or whether they are 1.2TL. These were in my parents home for well over 20+ years that we recently sold and have been in a storage space for the past 7 months and have no way to test them. I have some pictures of the rear panels w/ Serial numbers and the tweeters seem to indicate Silver Coil Dome when pulling the front panel. They were my dad's pride and joy, and one still tracking this out there with some insights? I haven't tried opening these things up beyond taking off the front cloth panels... Thanks in advance! I've moved my folks to an assisted living facility and these are amongst the residuals of what is now left over (i'm saving the antique chinese furniture questions for other places on the interweb).
  • F1nut
    F1nut Posts: 50,086
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    eleeut wrote: »
    .

    Looks to me like you already sorted it out and are attempting a back door way of selling them.

    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

  • eleeut
    eleeut Posts: 5
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    Hi, I definitely don't have it sorted it out yet, nor I am I looking to try to offload them via this forum. From what my here and there research has led me to so far, there's no specialized markings denoting 1.2 v. 12TL from what I've been able to find on the internet. My dad doesn't remember what version they are either. I'm not a stereo expert, I'm just trying to wrap up chapters of our family's life, sorry if comes across differently... These items aren't insignificant!

    From the cover pic of the manual found here for the 1.2 + 2.3 (https://polksda.com/pdfs/SDASRS1-2.pdf), the tweeters on the set I have resemble those with a vertical line. Images I'm seeing associated with the TL seems to have embossed Polk Audio stamps ringing around the tweeters. (https://reverb.com/item/39529090-polk-audio-sda-srs-1-2tl-speakers). At this point I'm assuming 1.2. I'm just trying to figure out what we have before I get back to clearing out the storage space. I can't take them as I'm trying to clear my place out as well...

  • Gardenstater
    Gardenstater Posts: 4,281
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    1.2TL would have the SL3000 trilaminate tweeter. It has a foam ring around the dome.
    George / NJ

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  • eleeut
    eleeut Posts: 5
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    Thanks, I'm hoping this image attachment works of one of the tweeters.

    d8s4m3iryhww.jpg
  • Gardenstater
    Gardenstater Posts: 4,281
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    That's the SL2000 which means you have the 1.2
    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
  • eleeut
    eleeut Posts: 5
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    thank you so much. on my own, I would have spent years to get to that answer...
  • F1nut
    F1nut Posts: 50,086
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    eleeut wrote: »
    thank you so much. on my own, I would have spent years to get to that answer...

    All you had to do is Google SDA SRS 1.2 or 1.2TL and look at the photos.
    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

  • F1nut
    F1nut Posts: 50,086
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    eleeut wrote: »
    Hi, I definitely don't have it sorted it out yet, nor I am I looking to try to offload them via this forum. From what my here and there research has led me to so far, there's no specialized markings denoting 1.2 v. 12TL from what I've been able to find on the internet. My dad doesn't remember what version they are either. I'm not a stereo expert, I'm just trying to wrap up chapters of our family's life, sorry if comes across differently... These items aren't insignificant!

    From the cover pic of the manual found here for the 1.2 + 2.3 (https://polksda.com/pdfs/SDASRS1-2.pdf), the tweeters on the set I have resemble those with a vertical line. Images I'm seeing associated with the TL seems to have embossed Polk Audio stamps ringing around the tweeters. (https://reverb.com/item/39529090-polk-audio-sda-srs-1-2tl-speakers). At this point I'm assuming 1.2. I'm just trying to figure out what we have before I get back to clearing out the storage space. I can't take them as I'm trying to clear my place out as well...

    When someone new states something like, I'm looking to liquidate a pair of speakers and lists their location they are trying to see if they can skirt the rules for selling here. We've seen it way too many times.
    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

  • eleeut
    eleeut Posts: 5
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    Sorry about that, I don't seem to have the option to edit the post to remove the location information in the post anymore but I would remove it.

    Re: Google Search
    I've been intermittently trying to match up information using google searches for the past few weeks, coming across information such as what is up thread posted by you indicating needing to look at parts/part numbers + serial numbers not being determinative. Anyhow, I don't think it's exactly straightforward to find consistent imaging for speakers/components that were available commercially well over 25 years ago, hence asking.

    Thank you for the input, it is still appreciated.
  • F1nut
    F1nut Posts: 50,086
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    Ok, sorry if I was off base.
    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

  • audioluvr
    audioluvr Posts: 5,492
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    Not everyone is Google savvy but most people are terribly lazy.
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