is a sub in each corner + lfe sub a good idea?

Discussion in 'Archived Threads 2001-2004' started by Michael E, Feb 28, 2002.

  1. Michael E

    Michael E Extra

    Joined:
    Apr 2, 2001
    Messages:
    17
    Likes Received:
    0
    I know this is a very talked about topic, but I recently read an article where the reviewer states that the ultimate HT set up would be a sub in every corner plus an lfe sub. Is there a way to do this with out cancellations?

    Mike
     
  2. ling_w

    ling_w Second Unit

    Joined:
    Sep 3, 2001
    Messages:
    426
    Likes Received:
    0
    This site discuss about subs in multiple corners and its effect on room modes:
    http://www.sonicdesign.se/subplace.html
    Basically, sub at adjacent corners would reduce room 2x+1 room modes. Subs at 4 corners would reduce both 2x+1 length and width modes. 8 subs would cancel height modes also. Best of all is a wall of subs.
     
  3. Wayne A. Pflughaupt

    Joined:
    Aug 5, 1999
    Messages:
    6,100
    Likes Received:
    33
    Location:
    Katy, TX
    Real Name:
    Wayne
    Michael,
    First, welcome to the Forum!
    Many knowledgeable people here feel that the more subs you add in various places around the room the worse response gets, and the harder it is to smooth it out. Extensive testing by audio professionals like Tom Vodhanel, Tom Nousaine and Howard Ferstler have concluded as such, and my own experiments bear this out as well.
    I got the smoothest response, highest output and lowest extension when I put both my subs in the same corner and equalized them. Of course, no two rooms are the same, but more oft than not this seems to be the conclusion most people come to.
    P.S. Michael, there is going to be a local HT meet in Katy on Saturday 3/2. E-mail me at [email protected] (not the address at the icon above) if you’re interested in attending.
    Regards,
    Wayne A. Pflughaupt
     
  4. Michael E

    Michael E Extra

    Joined:
    Apr 2, 2001
    Messages:
    17
    Likes Received:
    0
    Thanks for the link it was very informative reading. Presently I have my subs in one corner for the lfe. I do have powered towers with built in 12inchers at 4 corners as well. I have read the debate about powered towers and non-powered and I have not reached a conclusion on how to run these yet. I have taken 3-4 weeks with them run as small with subs in the corner doing the low end work. I now have them run as large with the subs in the corner only doing lfe work. So far I find setting them to large to sound subjectively better the at small. I can not really nail down why yet, that will take a bit more listening. The level of bass is about the same in each situation, just different in coverage if that makes sense. Anyway thanks for the great info. You all are a great resource thanks

    Mike
     
  5. Bob_A

    Bob_A Supporting Actor

    Joined:
    Jul 30, 2000
    Messages:
    876
    Likes Received:
    0
    "I have taken 3-4 weeks with them run as small with subs in the corner doing the low end work. I now have them run as large with the subs in the corner only doing lfe work. So far I find setting them to large to sound subjectively better the at small"
    [​IMG]
     
  6. Wayne A. Pflughaupt

    Joined:
    Aug 5, 1999
    Messages:
    6,100
    Likes Received:
    33
    Location:
    Katy, TX
    Real Name:
    Wayne
    Michael,

    I suggest getting a test CD and an SPL meter and take some readings. This will eliminate the “guess work.”

    Regards,

    Wayne A. Pflughaupt
     
  7. Michael E

    Michael E Extra

    Joined:
    Apr 2, 2001
    Messages:
    17
    Likes Received:
    0
    Thanks Wayne. Actually I have used an spl meter and several test dvds. Each setup seems to do things a little different and accels at different things. Tonight I wired my subs with my mains and used the crossover on the subs to route only info 50hz and above to the mains everything else then goes to the subs. I have set the decoder to no sub routing all lfe info to the mains. Early calibration and listening has proved promising. The most notable thing is smoother blending with the mains. I do still have my rears set to large which seems to sound better in my dedicated theater room. Too many choices really, but that is what makes it so fun I guess?!

    Mike
     

Share This Page