Sub Configuration Suggestions

Discussion in 'Archived Threads 2001-2004' started by Miklsan K, Feb 20, 2002.

  1. Miklsan K

    Miklsan K Agent

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    I think I caught the DIY bug from you guys and I want to build a sub (or two). I have two plate amps rated at about 150 watts each, and would like to build one or two subs that provide a noticeable improvement over my current Infinity BU120. The room is about 12x25 (long) with 9 foot ceilings. With the plate amps I want to use, I know I will need something fairly efficient. No wife,so no WAF to deal with (yet). I would appreciate any help or guidence. Suggestions?
     
  2. Wayne A. Pflughaupt

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    First, welcome to the Forum!

    I’m afraid you’re on the loosing end of acoustical laws with this one, Miklsan. You probably need 150 watts or more per sub in a room this size.

    The problem with “efficient” subs is they really don’t get very low unless you have them in a really big box – I’m talking half the size of a refrigerator here. Don’t think that will go over big with the Mrs.

    Regards,

    Wayne A. Pflughaupt
     
  3. Pete Mazz

    Pete Mazz Supporting Actor

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    If those amps are 150 W @ 8 Ohms, you should be OK running a Tempest with each one. I would build a twin Tempest enclosure and mount the amps in seperate boxes for future use of a bigger stand-alone amp. There's lots of threads devoted to Tempest applications, so a search should get you started.

    Pete
     
  4. Don't forget about the maelstrom. They are pretty darn efficient. Heck, use one amp per coil!
     
  5. Dustin B

    Dustin B Producer

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    Well the two options I would recommend are either a pair of Shiva/Dayton DVC 12" drivers or a pair of Tempests like Pete recommended.

    The 12" drivers I would put in 140L enclosures tuned to 18hz with a 4" flared port.

    I'd put the Tempest's in 280-320L enclosures tuned to 16-18hz with a 6" port.

    In either case if you wanted you could combine them into a single larger enclosure and use the same tuning. 240-300L for the pair of Shiva/DVC's with a single 6" port. 480-500L+ with a pair of 6" ports for the Tempests.
     
  6. Wayne A. Pflughaupt

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    Gee, I feel stupid. For some reason I saw 50 watts, not 150 watts. Sorry.

    Regardless, Miklsan, listen to Dustin -- I think he's on the right track.

    Regards,

    Wayne A. Pflughaupt
     
  7. Miklsan K

    Miklsan K Agent

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    Thanks to all for the input. I am glad to see that these suggestions are along the lines of where I was headed anyway. While I work for an electronics retailer, I think it will be fun to get back into DIY. I used to be heavily into competition car audio, and even sold mid/high-end home before that. Now that I am back on the home side, it is time to update the theater system! One more question: where can I acquire some Aeroport (flared ports) for a good price?
     

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