Which amp and 12" driver for ported 4 cu. ft. box?

Discussion in 'Archived Threads 2001-2004' started by Jim A. Banville, Apr 9, 2002.

  1. Jim A. Banville

    Jim A. Banville Supporting Actor

    Joined:
    Jun 20, 1999
    Messages:
    630
    Likes Received:
    0
    I'm considering selling my Velodyne CT-120 and building a DIY sub with a 12" woofer and a nice plate amp. I'm looking at the Dayton Titantic II and Adire Shiva woofers, and the 250 amps at Parts Express and Adire Audio (they look identical). I have room for a 24" x 24" x 15" box, but not a tall sonotube. Opinions?
     
  2. Patrick Sun

    Patrick Sun Moderator
    Moderator

    Joined:
    Jun 30, 1999
    Messages:
    38,717
    Likes Received:
    463
    Go buy one of these original SVS subs (keep an eye open and look in hardware area) and tune it to around 22Hz-25Hz.
     
  3. Jim A. Banville

    Jim A. Banville Supporting Actor

    Joined:
    Jun 20, 1999
    Messages:
    630
    Likes Received:
    0
     
  4. Ryan Schnacke

    Ryan Schnacke Supporting Actor

    Joined:
    Feb 5, 2001
    Messages:
    876
    Likes Received:
    0
    Not better, just cheaper. The new SVS driver is probably close to the Shiva in output. And its got 30% more than the old driver. So if you can get the old driver for $40 that's about 3/4 of the performance for about 1/3 of the price vs the Shiva. Two of these would likely edge out even the Titanic MK2 for about 1/2 the price.
     
  5. Jim A. Banville

    Jim A. Banville Supporting Actor

    Joined:
    Jun 20, 1999
    Messages:
    630
    Likes Received:
    0
    Okay, how would you all "rate" the drivers mentioned in this thread?

    1- new SVS

    2- Shiva

    3- old SVS

    4- Titantic
     
  6. Jeffrey Noel

    Jeffrey Noel Screenwriter

    Joined:
    Sep 11, 2001
    Messages:
    1,533
    Likes Received:
    0
    Jim, don't forget the Dayton 12" DVC. It's alot like the Shiva and I sure like the output from mine! LOUD!!
     
  7. Rudy H

    Rudy H Stunt Coordinator

    Joined:
    Mar 2, 2002
    Messages:
    105
    Likes Received:
    0
    New Titanic MK2

    12inch Dayton DVC

    Shiva

    New SVS

    Old SVS

    Old 12inch Titanic (very good music woofer, but very easy to bottom with the bigger plate amps. I only recommend 150watts, no more).
     
  8. Brian Bunge

    Brian Bunge Producer

    Joined:
    Sep 11, 2000
    Messages:
    3,716
    Likes Received:
    0
    Jim,

    How about the Dayton DVC 12" tuned to 20Hz? Looks like you'd get about 107-108dB at 20Hz, anechoic. You barely go past Xmax by 1mm around low 30's, high 20's.

    Brian
     
  9. Ryan Schnacke

    Ryan Schnacke Supporting Actor

    Joined:
    Feb 5, 2001
    Messages:
    876
    Likes Received:
    0
    I agree with Brian's recommendation. Assuming a box volume somewhere between 3.5 and 4ft^3 the DVC looks nice tuned to 20Hz. With a 4 inch diameter port I get a port length of 18 to 21 inches depending on actual enclosure volume. That's near the limit of what you could fit in a 24 x 24 x 15 box without any bends in the port.
     
  10. Brian Bunge

    Brian Bunge Producer

    Joined:
    Sep 11, 2000
    Messages:
    3,716
    Likes Received:
    0
    Unibox gives me a port length of 18" for a 4" diameter port with two flared ends in the 4ft^3 enclosure.

    Brian
     

Share This Page