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  1. #1

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    Default Speaker placement for 1C

    Try and put the speakers 1 ft off the back wall and 1 ft from the side wall.

    You may like it.....give it a try.
    Please no ration of crap..just a sugestion to try out. If you don't like it, move it back.

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    What benefits did you notice with that set-up?

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    Your backwall spacing is about right...but SDA's really need at least 2-3 feet of clearance on the outsides. SDA's are very picky with placement.
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    If you have a room that is 10-12 feet wide...and what ever long. You may like it.

    The sound stage opens up...you may have much more of the SDA effect.

    Depends on your room..but ..give it a try....if you don't like it..put it back.

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    I feel like Pac-man reading your posts, just eating up the ...........................'s

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    With a failed driver and all??

    BDT
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    I have listened to SDA's only 1 ft away from the side wall and they sound like total sh*t. And all the drivers were working.

    What I mean by "total sh*t" is almost complete lack of SDA properties and very boomy, muddy bass.
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

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  8. #8

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    Right now, I believe my 2A's are about 17" from the back walls and the left speaker is about 2.75' from the sidewall, and the right speaker is about 1.5' from the sidewall. They're 84" apart from each other, with the sweet spot about 89" from the center point.

    I'm still kind of playing with the spacing from the back walls. I can't go much farther back though, or else the speakers baffles are farther back than my TV, and the center image starts breaking up. This is why I need to get a flat panel to hang on the wall. I get noticeably better bass response with them about 14-15" from the back walls, but at the expense of the center image.
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  9. #9

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    yeah..with the replacement driver..IF i don't push it..it's ok.

    In a small room..12x 12 or something..12 inches of the back wall ..it needs to be......but the sidewall...thats another story.

    Try 12"...if you don't like it move it 15"..or a little more..just try it.

    If you don't like it...fine. Go back to the 3 feet.

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    5 to 6 inches from the rear wall generally works the best. Of course, when you have them one foot from the side walls, basically jammed into the corners, you will have corner loading and therefore will find that they need to be out at least a foot from the back wall to prevent muddy bass. This isn't rocket science.
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  11. #11

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    Quote Originally Posted by bobt View Post
    yeah..with the replacement driver..IF i don't push it..it's ok.

    In a small room..12x 12 or something..12 inches of the back wall ..it needs to be......but the sidewall...thats another story.

    Try 12"...if you don't like it move it 15"..or a little more..just try it.

    If you don't like it...fine. Go back to the 3 feet.
    I've been playing around with placement a lot lately...so I'll give it a try sometime. I'm not anticipating myself enjoying it too much though to tell the truth. I'll report back.

    Quote Originally Posted by F1nut View Post
    5 to 6 inches from the rear wall generally works the best. Of course, when you have them one foot from the side walls, basically jammed into the corners, you will have corner loading and therefore will find that they need to be out at least a foot from the back wall to prevent muddy bass. This isn't rocket science.
    The way I always understood it(at least with subs), is that if you're placing it in the corner, you want one of the spaces to be about double the size of the other space. For instance...if your sub is 6" from the back wall, you ideally want it to be about 12" from the side wall. Giving them different amounts of airspace on the back and sides helps to prevent corner loading. I'm guessing the same principles would apply with a full range speaker.


    I seriously keep thinking about just getting my TV out of my room. It gets used for all of 3 hours a week...so I could easily live without it in there.

    I have another TV in the living room that I can use anyway.

    If I got the TV out of there, the area between the active drivers in my speakers would be completely clear. My rack would still be in the middle, but it only comes up to just above the PR's in my 2A's. With that middle area clear, I'd probably be able to move them back quite a bit more, without degrading the center image.

    Like I said...this is why I need a flat panel hanging on my wall.
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  12. #12

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    Fellas, seriously. If he gets back with the [supposed] broken driver? Then give him help. Until then?

    Rocket Science is not......OK, I'll give him a break here.....

    I'll roll with it.... ;)
    In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

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  13. #13

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    The China made driver is sill broke....if you push it to hard..it pops..period..end of story..As long as you don't do that it works fine.

    I'm talking about very LOUD volume..which maybe a lot of you don't do...but whatever...

    The placement of the 1c's right now sit in a 12x10 room...they are studio models, i have taken the "feet" off them...they sit on the floor.."carpet"..

    They are basically 1 foot off the back

    wall, 1 foot off the sidewall.....they work perfectly....no "Mud" sound . 3 Feet off the wall (side wall)in this type room....they just sound bad.

    But of course thats just me...move them around..see what you like....

    3 feet off the side wall in a 12foot room is stupid..but hey..do what you want.

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    That's totally the opposite compared to how most feel they sound the best.................but if it works for you...........then enjoy.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

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  15. #15

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    Quote Originally Posted by bobt View Post

    3 feet off the side wall in a 12foot room is stupid..but hey..do what you want.
    That's just about perfect placement for the best attributes of an SDA. Sorry you think it's stupid.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

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  16. #16

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    Quote Originally Posted by heiney9 View Post
    That's just about perfect placement for the best attributes of an SDA. Sorry you think it's stupid.

    H9
    Never thought I'd say this, but I think Bobt is right for once,

    For a 12 foot room, 3 feet off the side ways gives you less than 6 feet between the two outsides of the speakers, factor in the width of the speakers themselves and you have speakers that are going to be less than 2 feet apart...

    This is not say that I support this "certain individual" in his other posts.
    Last edited by JohnLocke88; 01-06-2010 at 07:53 PM.

  17. #17

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    If the room is exactly 12' then perhaps 3' on each side is extreme. More like 2 feet and it will give you about 5' in the middle. All these are rough estimates and I forgot that each SDA is almost 17" across so yeah that might not work the best. But having them 1' or less from the side walls isn't all great either.

    We all have to deal with whatever room dimensions we have.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  18. #18
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    According to every SDA manual I have read the minimum footage between the speakers is 4', 6' to 8' apart being ideal.

    I'm glad you found what sounds good. A little experimentation goes a long way. Don't know what to tell you about the "China made" driver.

  19. #19

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    My room is 12' wide and my 1C's are 3 feet off each side wall and about 6" off the back and they sound spectacular. Lots of tight non-muddy bass and huge SDA effect on the many recordings. I guess I'm just stupid.
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  20. #20
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    Quote Originally Posted by Fongolio View Post
    My room is 12' wide and my 1C's are 3 feet off each side wall and about 6" off the back and they sound spectacular. Lots of tight non-muddy bass and huge SDA effect on the many recordings.
    That's about as proper an SDA set-up as you can get.

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    Bob,
    Are you still using a non common ground amp w/o the AI-1 interconnect?
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  22. #22

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    The China made driver is sill broke
    So, does that mean you haven't returned any of the drivers to Polk for inspection?
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    Jesse, this probably won't be popular but I installed a new MW6511 I got directly from polk (made in China) and it does the same thing described as bobt described. It works fine with less dynamic music/sounds but does pop if you push dynamic sounds (bass) through it. A good example would be when the bombs go off in Valkyrie (the movie starring Tom Cruise). It caused my 2B (left one with the new MW6511) to pop as bobt described. Whay it does this, I don't know. My 3.1TLs (all orignial drivers) DO NOT do that using the same amplifier.
    Last edited by headrott; 01-07-2010 at 12:22 AM.

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    Greg, I would contact Polk Customer Service by phone asap and explain what is happening as they have expressed a real interest in this matter.
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    Well GEE..guess i'm not a total ass then..since somebody else has the same problem. Dose exactly the problem i said it had.....It works to a certain point.. but if you push it..it pop's...depends on the music your playing too.

    The spacing of the 1C's..in a room thats 12x10 maybe...with carpet and a bunch of junk in it...and windows on 1 side.

    3 Feet off the sidewall...sounded like crap.....it's all up to what is in the room, what the acoustic crap is going on...period.

    I moved the speakers back to 1 foot off the backwall...12" off the sidewall.

    Works great..you could move them more off the sidewall.....see if you like it.
    It all depends on the room acoustic...and whats in there.

    3 feet of the sidewall...in this size room...is junk....but hey..whatever floats your boat.

  26. #26

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    GEE..F1....what the hell..sombody had the nerve to say they had a problem with the drivers....even to the point that i said exactly what the problem was....

    So i guess..both of us must be ass holes.......

    If you get this thru your head....they do have a problem....but since you know everything..and the rest of the fools that have 20 thousand posts.......what is the problem?????..if you will say they have a problem!

    Gee at this point..try the voice coil winding is crap...but thats a guess.

  27. #27

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    Oh hell, Bob's got a woody.
    In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

    "The best way to enjoy digital music reproduction is to never listen to good analogue reproduction". - Kenneth Swauger

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    Quote Originally Posted by bobt View Post
    Well GEE..guess i'm not a total ass then..since somebody else has the same problem.
    What makes you "a total ass" is the way you presented and continue to present the matter at hand. Compare your rants to the post Headrott made for a perfect example of what I/we are referring to.

    You still have not answered my question, have you returned any of the drivers to Polk for inspection?
    'Political Correctness'.........defined

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  29. #29

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    Yup..I'm sure...except for the fact..that...there is a problem.

    But i sent Polk an email...they never said they wanted the drivers back,
    Never responded...so have a nice day.....I'M RIGHT...YOUR WRONG...so have a nice day. They Know they have a problem at this point......

  30. #30

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    I was willing to send the drivers back..they never responded or cared if i sent them back......period.

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