Sda Spacing

univera
univera Posts: 848
edited April 2006 in Vintage Speakers
Another Question. Is There Any Consensus On Minimum/maximum Spacing Of The Sda-srs's And Do Most Of You Toe Them In?
UNIVERA
Historic Charleston SC

2 Channel:
SDA-SRS's RDO tweets
Biamped Anthem 2 SE's w/1970's NOS Siemens CCA's
Anthem Pre 2L w/E.harmonix platinum matched 6H23's
CDP- NAD C 542



HT setup:
AVR: NAD T 773
Rears: Polk LC80i
DVD: Toshiba 3109 dual tray
Subs: Velodyne and M&K
T.V.: Sony KDL-52XBR4 w/Vans Evers Clean Line Jr.
Conditioner: Panamax M5100EX

Master Bedroom Sony 40KDL-XBR3

"I love it when a plan comes together." Hannibal Smith, The A-Team
Post edited by univera on

Comments

  • Zen Dragon
    Zen Dragon Posts: 501
    edited April 2006
    The manuals offer some assistance in setting up the placement of the SDA speakers. Most of the older mauals can be found on the Polk older product pages.
    http://www.polkaudio.com/search/older.php

    You do NOT want to toe the SDA's in. They should operate on a flat plane facing straight out. You can start by placing them out about 6-8 inches from the back wall. Space them 8-10 feet apart if possible. Ideally they should be the same distance apart as the distance you will be sitting away when listening. With the SDA cable installed and them set up correctly you will have a sweet spot out in front of them where there is a wonderful sound stage with great imaging.
    After you have them basically set up you can make minor tweaks to their distance apart and from the wall to find the best sound. There are many threads discussing SDA placement on these boards if you do a search.
    The Family
    Polk SDA-1C's
    Polk SDA-2
    Polk Monitor 10B's
    Polk LSI-9's
    Polk Monitor 5's
    Polk 5 jr's
    Polk PSW-450 Sub
    Polk CSI40 Center

    Do not one day come to die, and discover you have not lived.
    This is pretty f***ed up right here.
  • I-SIG
    I-SIG Posts: 2,242
    edited April 2006
    Actually, I think it is recommended that you sit a little farther away than the distance between the speakers.

    With both my 1c's and my SRS's I've had great success spacing tham about 42"-48" apart and 3 or more feet away from the side walls and sitting about 8 feet or so away. I haven't had the luxury of having a 16ft. wall to put them on to get 8-10ft. of spacing and not have the side walls be too close.

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

    Sony 75" Bravia 4K | 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 | Rotel Michi P5 | Signal Cable Silver Resolution XLR's | Cambridge Audio azur 840C--Wadia 170i + iPod jammed w/ lossless audio--Oppo 970 | Pure|AV PF31d
  • univera
    univera Posts: 848
    edited April 2006
    Thanks. I have never towed mine, just wondered. How do I find the threads on placement. I can't seem to figure out how to get right to them. FYI-my speakers are about a foot or so short of 8 feet and plenty of side wall space. 10 feet to my listening postion. I will have to go wider and check results.
    UNIVERA
    Historic Charleston SC

    2 Channel:
    SDA-SRS's RDO tweets
    Biamped Anthem 2 SE's w/1970's NOS Siemens CCA's
    Anthem Pre 2L w/E.harmonix platinum matched 6H23's
    CDP- NAD C 542



    HT setup:
    AVR: NAD T 773
    Rears: Polk LC80i
    DVD: Toshiba 3109 dual tray
    Subs: Velodyne and M&K
    T.V.: Sony KDL-52XBR4 w/Vans Evers Clean Line Jr.
    Conditioner: Panamax M5100EX

    Master Bedroom Sony 40KDL-XBR3

    "I love it when a plan comes together." Hannibal Smith, The A-Team
  • Zen Dragon
    Zen Dragon Posts: 501
    edited April 2006
    To do a search go to the search tab near the top of the page. Click on it. On the drop down window click on advanced search. Type in your text and any options for where to perform the search. Here is an example of a search on SDA placement anywhere in a thread.
    http://www.polkaudio.com/forums/search.php?searchid=293321
    As to the distance apart 8 feet is fine. You can try further but I meant to type 6 to 8 feet as a starting point in my earlier post.
    Enjoy those SDA's
    The Family
    Polk SDA-1C's
    Polk SDA-2
    Polk Monitor 10B's
    Polk LSI-9's
    Polk Monitor 5's
    Polk 5 jr's
    Polk PSW-450 Sub
    Polk CSI40 Center

    Do not one day come to die, and discover you have not lived.
    This is pretty f***ed up right here.
  • schwarcw
    schwarcw Posts: 7,335
    edited April 2006
    Remember to keep the front of the SDA speaker baffle at least 3" in front of any entertainment center or TV so the sound can project with any side interferences. This may bring them out from the wall a little father than you would like, but it will preserve the "SDA effect":)
    Carl

  • reeltrouble1
    reeltrouble1 Posts: 9,312
    edited April 2006
    I would not go wider.

    RT1
  • dorokusai
    dorokusai Posts: 25,577
    edited April 2006
    Just set them up in a way that sounds best in your room and use the SDA placement recommendations as a guide, not a rule. The only key points for me would be close to the wall placement and no toe-in....everything else is a free for all.

    I've heard about 20 pairs of SDA's and not single pair of them were by the book or in ideal locations for that anyways. I recall them all sounding very good, if not exceptional.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
  • Tour2ma
    Tour2ma Posts: 10,177
    Zen Dragon wrote: »
    The manuals offer some assistance in setting up the placement of the SDA speakers. Most of the older manuals can be found on the Polk older product pages.
    http://www.polkaudio.com/search/older.php

    To do a search go to the search tab near the top of the page. Click on it. On the drop down window click on advanced search. Type in your text and any options for where to perform the search. Here is an example of a search on SDA placement anywhere in a thread.

    http://www.polkaudio.com/forums/search.php?searchid=293321

    The manuals' recommendations are a starting point, not a final destination. Yes, the geniuses that developed these awesome flagships of the old Polk line up developed the guidelines based upon extensive listening... however, they were not in your room. Almost certainly they were in rooms far more friemdly to good sound than your rooms will ever be.

    Over the years I have put my ears on many great systems (at least on paper) including ones owned by names around here that suffered due to the room there were in. And as usual doro, a/k/a/ captain pragmatic, beat me to the advice punch...

    Love ya, man...

    The only other factor not yet mentioned I can think of that impact the quality of the SDA impact are room openings... doorway to the hallway to the left, wide arch to the Dining room on the right... that sort of thing I've had that hallway make the widened Left side collapse (closing the hall door dd help). What was odd was that the Dining room, a much larger opening to much larger space had little effect. Never understood that one...

    Lastly... you cannot focus simply upon the speakers placement... other factors like open vs. closed door(s), curtains, impact performance. But if I had to name one factor that is the bane of a rig being all it could be it'd be listening position and the most offensive misstep? The listeners' Head(s) ends up too close to the rearwall. Those rearwall reflections are uber destructive. If this is you simply lean into the soundfield slowly as you listen next time. You might be as amazed as I was when Stu Lumsden got me to do it at an early Polkfest.

    https://www.youtube.com/watch?v=KylF4mZXf1Q

    So now you are in a furniture moving business... Where I now live I have the single best room to work with in which my SRSs have landed. I'll do some photos soon, but I am jut finalizing the recommended set up and I'm close... very close to dialed in.

    My big boys are having a blast, as am I.
    I-SIG wrote: »
    Actually, I think it is recommended that you sit a little farther away than the distance between the speakers.

    With both my 1c's and my SRS's I've had great success spacing tham about 42"-48" apart and 3 or more feet away from the side walls and sitting about 8 feet or so away. I haven't had the luxury of having a 16ft. wall to put them on to get 8-10ft. of spacing and not have the side walls be too close.

    Wes



    You do NOT want to toe the SDA's in. They should operate on a flat plane facing straight out. You can start by placing them out about 6-8 inches from the back wall. Space them 8-10 feet apart if possible. Ideally they should be the same distance apart as the distance you will be sitting away when listening. With the SDA cable installed and them set up correctly you will have a sweet spot out in front of them where there is a wonderful sound stage with great imaging.
    After you have them basically set up you can make minor tweaks to their distance apart and from the wall to find the best sound. There are many threads discussing SDA placement on these boards if you do a search.[/quote]

    More later,
    Tour...
    Vox Copuli
    Better to remain silent and be thought a fool, than to open your mouth and remove all doubt. - Old English Proverb

    "Death doesn't come with a Uhaul." - Dennis Gardner

    "It's easy to get lost in price vs performance vs ego vs illusion." - doro
    "There is a certain entertainment value in ripping the occaisonal (sic) buttmunch..." - TroyD
  • BlueFox
    BlueFox Posts: 15,251
    .
    Lumin X1 file player, Westminster Labs interconnect cable
    Sony XA-5400ES SACD; Pass XP-22 pre; X600.5 amps
    Magico S5 MKII Mcast Rose speakers; SPOD spikes

    Shunyata Triton v3/Typhon QR on source, Denali 2000 (2) on amps
    Shunyata Sigma XLR analog ICs, Sigma speaker cables
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    Mapleshade Samson V.3 four shelf solid maple rack, Micropoint brass footers
    Three 20 amp circuits.
  • nooshinjohn
    nooshinjohn Posts: 25,407
    bmyczv5sw8ym.gif
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
  • Emlyn
    Emlyn Posts: 4,488
  • engie490
    engie490 Posts: 431
    1. Set up the SDAs as per guidance from the manual or as close as you can within the constraints of your room.

    2. Adjust your listening position by moving it closer to or further away from the speakers.

    3. If you can't find a timbral balance you like, then start moving the speakers closer or further from the backwall. I would try 1 inch increments for moving the speakers.

    4. Finally, I would adjust the spacing between the speakers.

    Remember, if you adjust something in step 4, go back to step 2 and 3 and re-accomplish those steps.

    Sometimes having you're listening position against the rear wall is OK...it will generally provide a maximum amount of bass and you can tame the early reflections with a room treatment behind your head. It doesn't take a lot of effort to figure out if it will work for you.

    Trial and error is your friend in speaker placement. Other people have Polks, but no one else has your room or your ears.

    Alon Petite / Infinity 1.2S / Coda Continuum / Counterpoint SA5000 / Oppo BDP-105D / Technics SP-15 w/SAEC WE-308SX & Ortofon AS-309 arms / Ikeda 9C2 & Dynavector XX2 Mk II carts