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  1. #1

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    Thumbs up New member with an SDA 2a ?

    First of all, hello from Iowa.

    Back in the day, I remember sitting in the sound room at Audio Labs in Des Moines, IA. This was around 1986-87 (I was still in college) and the sales person was demo-ing the new Polk Audio SDA 2As to me. Wow, I couldn't believe what I was hearing (I could actually still hear pretty good at the time). It was a sound I hadn't heard before from a loud speaker and I was in total bliss as he was playing a little Dark Side of the Moon for me. Needless to say I was hooked, but being a college student, I was dirt poor and couldn't afford the $990 price tag.

    Fast forward to this last weekend, as I was doing my usual scour of the CL electronics listings, I came across an ad for some Polk Audio SDAs. The kid had inherited them from his father, and wanted to trade them for some car audio stuff. HEY, I had what he wanted! So I contacted him, told him what I had, he was interested, we set a meet-up time, and I came home with a pair of barely used SDA 2As. These were the natural wood grain, and included the connector cable. I think I scored pretty well.

    So now my dilema and question. For those of you with experience in the SDA listening room, what is the ultimate reciever/amp to drive these and do them justice? I plan to purchase something just to drive these alone, and I want to do it right.

  2. #2

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    congrats, I owned a pair of 2A's for a short time. nice size and sounding speaker.

  3. #3

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    First of all, whats your budget? Secondly there is not a receiver that will "do them justice", a power amp with either a preamp or a receiver with pre-outs to control it. Those are great speakers and will sound excellent with some good power, check the classifieds here, ebay, audiogon, or craigslist.
    Most of them only hear how loud it sounds, and the rest of us hear everything else -

  4. #4

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    WELCOME TO CLUB POLK!!

    Enjoy the SDAs, I have a pair of those myself...and while woodsman is basically right, there are some vintage receivers that can drive SDA-2A/Bs...I know because I used one at one point--an old Kenwood 130 Watt/channel that was also able to drive 4 ohm speakers. I could never get the volume knob past about 1 o'clock on that amp. But you're better off with separates or a GOOD integrated...a NAD or Cambridge Audio, perhaps?


    cnh

  5. #5

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    No receiver is going to do those justice.


    I've got a pair of 2A's myself, and love them. I'm running them with the gear listed in my signature. My Adcom GFA-545 will drive them to very high levels with ease.
    The nirvana inducer-
    APC H10 Power Conditioner
    Denon DVD-2910 universal player
    DPA The Little Bit Three DAC
    Yamaha P-300 turntable/TCC TC-750 phono preamp
    Acurus L10 preamp
    Adcom GFA-545 power amp
    PolkAudio SDA 2A's/PolkAudio Monitor 7A's
    Audioquest Type 4 speaker cables
    Audioquest Sidewinder IC's
    Audioquest Black Mamba IC's
    Signal Cable Analog II IC's

  6. #6

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    Quote Originally Posted by comfortablycurt View Post
    No receiver is going to do those justice.
    Not true Curt. My harman/kardon HK-3480 and 3490 did the SDA-2B's justice.

  7. #7

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    Welcome to the Club! I too have a pair of SDA 2A's. When I first got them I ran them off a lower end Sony AVR. I now run them off a Sony 555ES powered by an Adcom GFA-555. The improvement in sound was mind boggling! I would high suggest listening to these guys here, they know how to make these SDA's shine.

    Good luck and let us know how you do!

  8. #8

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    I could see the Marantz 2300 series receivers working quite well with those 2A's.
    SDA-1C (full mods)
    Carver TFM-45
    NAD 1130 pre
    Rega Planar 3 TT/Shelter 501 MkII
    Nitty Gritty 1.5FI RCM
    The Clamp
    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

  9. #9

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    Quote Originally Posted by chandler9a View Post
    Welcome to the Club! I too have a pair of SDA 2A's. When I first got them I ran them off a lower end Sony AVR. I now run them off a Sony 555ES powered by an Adcom GFA-555. The improvement in sound was mind boggling! I would high suggest listening to these guys here, they know how to make these SDA's shine.

    Good luck and let us know how you do!
    You know, that's another high-end company that I drooled over when I was younger, but couldn't afford. And that GFA-555 is something that I would definately like to see sitting on the shelf with my other components. I've got a couple on my watch list now over on epay. Would love to come across something locally on Craigslist though. Thanks to all of you for your responses. I'm really tempted right now to go ahead and hook them up to my Yamaha 5.1 receiver, just to hear them again. Or should I wait for the "proper" amp. Dang, I'm like a kid in a candy shop. ;)

  10. #10

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    Quote Originally Posted by woodsman10b View Post
    First of all, whats your budget? Secondly there is not a receiver that will "do them justice", a power amp with either a preamp or a receiver with pre-outs to control it. Those are great speakers and will sound excellent with some good power, check the classifieds here, ebay, audiogon, or craigslist.
    There's always a budget, which is why I'll probably buy "lightly" used. But I'm not going to skimp either. I'm definately leaning towards seperate components.

  11. #11

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    Quote Originally Posted by Fongolio View Post
    I could see the Marantz 2300 series receivers working quite well with those 2A's.
    You see, that's been part of my dilema. I'm a big early solid state Sansui fan. I currently own an AU999 that I just love, but I'm not sure that "warm, tube-like' sound will be right for these SDAs. I should probably just try it and see.

  12. #12

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    Congrats on the new speakers. Where are you located, and 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

  13. #13

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    I live in southern Iowa, work in Des Moines, and thanks for the welcome Ben! You guys are a friendly bunch on this PA forum. :)

  14. #14
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    Welcome to Club Polk fellow ear problem dude!;):)

  15. #15

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    I can hear things. It just needs to be loud. :)

    Not sure if this is the right area to ask this, but would it be worth a 3 hour one way drive to pick up an Adcom GFA-555 for $180? The same person has a 535 as well, and would sell both for $250.

  16. #16

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    It's worth the trip. The 535 can be had for $100 if you shop so I am not sure it would be worth it.
    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

  17. #17

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    I'd say those amps are worth it if they are working and you've got the time.
    "Don't forget to change your politician. They are like diapers they need to be changed regularly, and for the same reason."

  18. #18

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    Quote Originally Posted by almostdeaf View Post
    I can hear things. It just needs to be loud. :)

    Not sure if this is the right area to ask this, but would it be worth a 3 hour one way drive to pick up an Adcom GFA-555 for $180? The same person has a 535 as well, and would sell both for $250.
    The 555 sells for $250-350 consistantly on ebay, so If you can get both for that $250 amount I say go for it!
    Most of them only hear how loud it sounds, and the rest of us hear everything else -

  19. #19

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    Finally got around to getting "the" amp to power the SDA's, and I'm pretty happy with the choice. Settled on a vintage GFA-555 with a GPA-450 pre to run my vinyl spinner through. Spent the last couple evenings sampling some of my albums that I haven't listened to in years. It's been total bliss! :)

  20. #20

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    You have only just begun.
    >
    >
    >This message has been scanned by the NSA and found to be free of harmful intent.<

  21. #21

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    Welcome to CP! I picked up a pair of 2A's last February, but didn't totally love them as they were when I got them home. They respond well to mod's and tweaks however, and I'm loving them now. The folks on this board know their Polk's; you can find out most anything you want to know here.

    Have fun with your journey! it's just starting...
    Dual 1229/Grado Gold/Rotel RCD1070/RC995/RB980BX/Pioneer 7100/Denon DRM710/Monster HTS3600MKII/PolkAudio SDA2B/TL's

  22. #22

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    Welcome to Club Polk. I bought a set of 2A's new back in the 80's and have loved them. If you can do a little tweaking and modifications to them, you will be rewarded a bunch. As Polkersince85 said, you have only just begun. Look at my signature to see why. :D
    Sunfire Theater Grand IV
    Sunfire Cinema Grand Signature
    SRS 2.1TL
    SDA 2BTL's
    CSiA6
    FXiA4
    FXiA6
    SDA 2A's
    Monitor 10A's

    http://www.douglasconnection.com

  23. #23

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    Congrats on the speakers. Enjoy!

  24. #24

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    something a little odd though while listening at moderate levels; I'll get an occasional "I swear that sound just came from the other room" moment. It will be like the front soundstage just disappears for a split second, I hear this noise behind me and to the left, then it's back in front of me. It's actually a little unnerving. Anyone else experience this. It's a fraction of a second kind of thing, but definately noticable.

  25. #25
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    Quote Originally Posted by almostdeaf View Post
    something a little odd though while listening at moderate levels; I'll get an occasional "I swear that sound just came from the other room" moment. It will be like the front soundstage just disappears for a split second, I hear this noise behind me and to the left, then it's back in front of me. It's actually a little unnerving. Anyone else experience this. It's a fraction of a second kind of thing, but definately noticable.
    The SDA effect can be quite startling if you are not accustomed to them especially if you have a version with the dimensional tweeters.

  26. #26

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    A belated Welcome Aboard.

    The SDA 2A is a fine and nicely upgradeable speaker. If you choose to modify the crossover and "TL" with the RDO198-1, it is one of the best you can own.

    The Adcom's were a great choice for diving them, but contrary to notion there was never a receiver made worth a damn, there was at least one in the NAD Monitor Series 7600 Receiver that will do an impressive job with even old 4ohm SRS models.
    VTL ST50 w/mods/RCA6L6GC/TlfnknECC801S
    CJPV-5 w/mods
    TT CJ Sonographe SG3 Oak/Sumiko LMT/Grado Wood Plat/Sumiko PIB2/The Clamp
    Musical Fidelity A1 CDPro
    Tuners w/mods Kenwood KT5020/Fisher KM60
    MF x-DAC V8, HAInfo NG27
    Herbies Ti-9/Vibrapods/MIT Shtgn AC1 IEC's/MIT Shotgun 2 IC's/MIT Shtgn 2 Speaker
    PSAudio Cryo PwrPrt Prem/ExctPwrEP15A
    Wlnt SDA 2B TL/Oak SDA SRS II TL-Sonicaps/Mills/Cardas/Cust SDA ICs/Mortite/Dynamat Extreme/TFLF Rings/FSB-2 Spikes
    NAD SS rigs w/mods
    GIK panels

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