What is SDA?

gmorris
gmorris Posts: 1,179
edited May 2004 in Speakers
With all the talk about SDA going on lately, I realized one thing, I don't know what the hell SDA is.

I've looked at the pictures on the site, but what is so special about SDA speakers? Why does everyone love them so much?

If someone could provide some useful technical explanations, that would be cool. I just don't know anything about these speakers. I find it unusual that a speaker made in the late '80s would be so desirable.
Bob Mayo, on the keyboards. Bob Mayo.
Post edited by gmorris on

Comments

  • Willow
    Willow Posts: 11,055
    edited May 2004
    I was wondering the same thing
  • VR3
    VR3 Posts: 28,774
    edited May 2004
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • gmorris
    gmorris Posts: 1,179
    edited May 2004
    I'm at work and the POS internet thing won't let me see that page.

    Can anyone provide any details?
    Bob Mayo, on the keyboards. Bob Mayo.
  • Willow
    Willow Posts: 11,055
    edited May 2004
    Polk's patented SDA soundstage technology provides what we believe to be the most enveloping home entertainment experience available at any price. The loudspeakers seem to disappear, leaving you completely immersed in the performance. Listeners have likened the imaging capabilities of the SRT to "virtual reality for audio."

    Ideally, the Left channel signal should be heard by only the left ear and the Right channel signal only by the right ear. But with conventional speakers, both ears hear both signals, confusing the brain's hearing mechanism and reducing stereo separation. This limits the sound stage to only the small space between the speakers. By using a technique called "interaural crosstalk cancellation" SDA reveals the sound stage of the original performance by removing the psycho-acoustic limitations imposed by conventional loudspeakers.



    SDA provides the listener with pinpoint imaging which extends beyond the locations of the loudspeakers, in width, depth and height. You are transported beyond the listening room, beyond the movie theater, beyond the mixing stage - you are there.

    Since recordings differ, the SRT system offers the opportunity of adjusting the SDA sound stage width, to "off", "normal," or "wide." You are free to choose the sound stage environment that fits the recording and your personal taste. Polk's patented SDA sound stage technology provides the most enveloping home entertainment experience available at any price. The loudspeakers seem to disappear, leaving you completely immersed in the performance. Listeners have likened the imaging capabilities of SDA to "virtual reality for audio."
  • gmorris
    gmorris Posts: 1,179
    edited May 2004
    O.k. So that cable that goes into the back of the speaker has to do with "interaural crosstalk cancellation"?

    I guess the next logical question is, Does SDA work? I'd think the answer would be a resounding "YES" based on what people around here say.

    Sounds pretty cool to me.
    Bob Mayo, on the keyboards. Bob Mayo.
  • VR3
    VR3 Posts: 28,774
    edited May 2004
    SDA is basically this...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • Jstas
    Jstas Posts: 14,842
    edited May 2004
    Since it seems to have gone unmentioned so far, SDA stands for Stereo Dimensional Array.


    As far as whether or not SDA works, I'd say it does and if my mother can hear the difference then, without a shadow of a doubt, it works.
    Expert Moron Extraordinaire

    You're just jealous 'cause the voices don't talk to you!