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coffee table sub??

Discussion in 'Home Cinema Building DIY' started by banners, Jun 23, 2003.

  1. banners

    banners
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    Hi all, first of all this project is for a friend that I'm helping. It may never mature into anything further than this enquiry, but if nothing else I hope it sets a few minds thinking.( and poss. helps others! & is fun!! Hell I may even build one!).

    Right here I go:) I want to combine a BK Electronics sub amp (100 Watt model)with either a BSB 10 100 or a BSB 12 100 .
    Modelled with WinISD, they return the following results:
    10 100 = f3 @32 Hz. box = 144 litres
    12 100 = f3 @37 hz. box = 120 litres
    Both ported.
    Both obviously have correct dimensions to fulfill the task (live in a custom built coffee table), just wondered if it all seemed about right? and if any others have tried it with success?
    I'm really looking for best bang per buck(are'nt we all?)

    Any advice gratefully received
    cheers steve:rolleyes:
     
  2. ReTrO

    ReTrO
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    The amp and 12" combo are very good value.

    The 12" driver requires an enclosure of apporx 35L ish, check the dimensions of the REL Q100e for an idea, same amp and river pretty much.


    This is running unported of course. I'd go with something better for having the worthwhile hassle of porting the sub.
     
  3. banners

    banners
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    Thanks for the reply Richard, but unless I'm modelling the driver wrong, 35l - 150 l all equal an f3 of around 60 Hz for that driver in a sealed box. Please bear in mind that the table would be used in free space and so little boundry gain would be present to help bolster things. Just wondering if the plate amp has some kind of active filtering?

    cheers steve
     
  4. ReTrO

    ReTrO
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    I guess you are thnking of fitting the drivers into the underside of the table?

    That will help with a lower end boost.
     
  5. ReTrO

    ReTrO
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    Seeing as you have got a lot of table volume to work with, a pair of unported BSB12's should sound pretty damn good. You should have enough side on the table to fit them both in also.

    I think that's what I'd do.
     
  6. banners

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    Richard Good idea about using the floor! He has suspended wooden flooring, not sure if this would cause too much boom tho'. Another thing is I'm not sure how the driver would react to this position?
    Please explain how you get the sealed alignment in a 50 litre box to act as a sub, as I can't seem to get it to suit.(Response!)
    Due to absolute financial constraints only one driver is to be used.

    cheers steve
     
  7. ReTrO

    ReTrO
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    The sealed 35L allignment works beacause it does. One of those things that can't be explained, sound very good though for the money.

    Speak to Tom from BKElec (Dan Gleebles on here).

    :smashin:
     
  8. banners

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    Cheers again Richard. Ill try Tom (a little probing oo-er). I may go ahead and make one box to cover both alignments. After a few hours of each I'm sure me M8 will prefer one over the other.

    cheers steve:smashin:
     
  9. Mark Grant

    Mark Grant
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    Here is a link to a 'Coffe table' Sub.

    Might be a bit expensive to build though.

    Should certainly move some air :)

    Mark.
     
  10. ReTrO

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    Man that's huge mark.

    Now just think what you could do with 4 of the BSB12's and a 140L coffee table!

    :clap:
     
  11. Mark Grant

    Mark Grant
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    Retro,

    That Guy (William) also makes subs to order, he is in Australia though.....

    http://www.cowanaudio.com


    Might we be seeing a RetroTaz coffee table with hidden powers :)


    Mark.
     
  12. ReTrO

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    Now that would be telling!

    I wouldn't bet against it sometime though.

    I'd like to make a sub-sofa first though.

    Just really need a doner sofa.
     
  13. Exeter Man

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    Hey guys,

    Piccies of Exeter Man combined side-table/sub due on this forum any day soon !

    Regards
     
  14. Ripco

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    This all sounds great but is it to be used as a working coffee table? The last I heard is that electronics and cups of liquid that boom around with the bass may just fall over. Or you could just put a fish tank on top of it, Lol.
     
  15. ReTrO

    ReTrO
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    You'll only need to worry about spilt drinks if you have made your sub really well such that it goes very low and loud. (Or it is badly designed and distorts hugely! :rolleyes: )

    If you can create the T-rex ripples from Jurassic Park then well done!:smashin:
     

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