Blown Shiva EBS

Discussion in 'Home Theater Projects' started by Russell R, Feb 19, 2005.

  1. Russell R

    Russell R Stunt Coordinator

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    Hello,
    I watched Alien vs. Predatur last night at my normal reference level. The shiva is toast. The enclosure is an EBS design tuned to 18.1hz. Any ideas on what to do next? Would an Adire Alignment be better at protecting the driver? I am using a Parts Express plate amp with a Behringer FBD. I had no problems with LOTR 1-3 or anything else for that matter. I wonder what frequency and amplitude made this happen.

    Russ
     
  2. RobertFirment

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    My Shiva blew out too. I went with the Atlas and have been very happy.
     
  3. Russell R

    Russell R Stunt Coordinator

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    What is the Atlas? Luckily, I have an extra Shiva in a box for a backup.
     
  4. stephanX

    stephanX Stunt Coordinator

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    did you hear any clicking or bottoming? which part of the movie did it blow in? you must have been clipping or something becuase 250 sure wont blow a shiva.
     
  5. RandyMathis

    RandyMathis Stunt Coordinator

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  6. Russell R

    Russell R Stunt Coordinator

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    Yes, the spider has separated from the basket. I wonder if this can be glued back? I am not sure if the coil is shot. I can look at this later. I replaced the driver with a new one and all is good.

    The last major boom scene in AVP caused this. I believe that the BFD may have gone into some sort of clipping or the driver was pushed too hard at some very low freq. I readjusted the EQ and levels.

    I need to build a second EBS to give me more headroom.
     
  7. Russell R

    Russell R Stunt Coordinator

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    What type of enclosure/setup are you using with the Atlas? I checked out the website and it looks promising for the next sub. Anyone else using the Atlas?
     
  8. Randy Noel

    Randy Noel Stunt Coordinator

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    I'm using the Atlas 15 in an Adire Alignment ported enclosure, 214l, and couldn't be happier. Terrific performance!
     
  9. Allen Ross

    Allen Ross Supporting Actor

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    if you modeled it, what kind of time delay are you seeing around the Fs? of your AA 214L
     
  10. Russell R

    Russell R Stunt Coordinator

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    I am going to model the 12" in an EBS setup.

    Thanks,
     
  11. steve all

    steve all Extra

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    i'm running an atlas 12 in a 142.5L shiva EBS enclosure and it does a great job! [​IMG] verry clean tight, and musical bass i'm tuned to about 20hz.
     
  12. Russell R

    Russell R Stunt Coordinator

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    Thanks. I will pick one up.
     
  13. john bourne

    john bourne Extra

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    How old is your Shiva? I had one do the same thing - spider separated from the basket and Adire sent a replacement under warranty. If is is out of warranty it is still worth a call to Adire as it sounds like this might be a manufacturing defect as it has affected several member's drivers. Good luck.
     

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