El Cheapo Bass Shaker experiments - promising!

Discussion in 'Archived Threads 2001-2004' started by Jonathan M, Feb 18, 2003.

  1. Jonathan M

    Jonathan M Second Unit

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    Hi All,

    After completing (Except for the Linkwitz Transform) my DPL12 based sub running off my DIY sub amp I found a rather attractive price on the Aura Interactor Vests here in New Zealand.

    They were going for NZ$15 each - that's around US$8 a pop. This includes the vest (Has a single 25W shaker in it), a small amplifier and it's power supply, plus a bunch of connecting cables including an RCA set, RCA to 3.5mm mini plug, RCA to just about anything else, and 2 y-splitter RCA sockets. A pretty good deal IMO. These can be found really cheap in close-out houses. I got mine from Jaycar

    First thing I did ofcourse was try it out. Needless to say, I wasn't too impressed - the main problems were that there is basically no low-pass filter in place, so you can hear dialog etc. from the "shaker", and the plastic vest rattled like nothing else!

    Last night, I ripped open the vest, and extracted the shaker, then bolted it to a piece of 18mm MDF and screwed it up under the seat of a Lazyboy. I then powered it off it's small amp, set it's level to around 3 on it's scale (Goes to 10) and ran it off the sub-out of my DIY sub-amp (Effectively crossing it at 80Hz with a 4th order low pass).

    WOW!! With just the single shaker, and such little power (I estimate only a few watts) the effect was really good. It only shook during really loud, deep passages, and really added to the experience - especially at low volumes. My wife, who came home at a rather inappropriate time (seeing the lazyboy which was only purchased at Christmas upside down, and me drilling away inside the thing), also thought it was great - once she'd had a go!

    I now plan to put 2 shakers in each Lazy Boy that we have - probably positioned towards the back of the seat, as there is plenty of room there and it doesn't interfere with the mechanism. I found that the place where I first tried the shaker, you could just feel it through the cushioning when you sat down - not acceptable. Hopefully I'll have time tonight to do up a nicer, more permenant mounting system with the 2 shakers.

    I'll be sure to post pictures and a description of the process and effect once I get it working nicely!
     
  2. TimForman

    TimForman Supporting Actor

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    I love a wife with an open mind. I wonder what response you would've got if you made her wear the little backpack![​IMG]
    I would love bassshakers but at $100 a pop I hesitate. This could be the answer. Thanks.
     
  3. Cam S

    Cam S Screenwriter

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    $8 bucks a pop? Geez, that sounds like a killer deal for some extra LFE effects. Make sure to get those pics up!
     
  4. Ashley Carr

    Ashley Carr Auditioning

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    Jaycar Australia is selling them for AU$10, which would make them around $5-$6 US. Only problem is they'd cost a fortune to ship overseas, as the whole unit is fairly bulky and heavy.

    They're also selling cushion versions, I've got one of those. For the money you can't complain, but I found that just when you start getting the power you want, the amp starts clipping.
     
  5. jeff lam

    jeff lam Screenwriter

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    Check ebay.

    Got a set of Aura Pros off ebay for $65. The 25W ones and vests can be found much cheaper.
     
  6. Jonathan M

    Jonathan M Second Unit

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