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sub bass.

Discussion in 'Subwoofers' started by tahirti3, May 18, 2003.

  1. tahirti3

    tahirti3
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    i posted a thread a while back,about my diy sub,which a few people thought was a touch unrealistic.well i have a few of these ready for testing.box is around 1.5cu.ft. 12 inch driver and 500watt amp.x-over 20hz to 120 hz.in my room i can hear and feel bass down to around 11hz according to sine sweep from my meridian 565.don't know how accurate this is.sound great though.
    i sold my two stentors as my subs simply blew them away.anyone want to have a listen?pm me.wife is away for ten days from thursday,so i can listen and watch undisturbed.
     
  2. ChrisNic

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    Out of interest how much did your subs cost you to make?
     
  3. Ian J

    Ian J
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    In November tahirti3 posted that he had built a subwoofer at cheap cost that blew away the big boys and invited anyone to have a listen in London.

    Quite a few people showered him in insults but not one person took him up on his invitation preferring instead to keep their heads firmly in the sand.

    Have a read of this to see how we treat people that don't conform to the norm and this time it would be nice if at least one person living in or near London could take him up on his offer of a listen and post their independent thoughts.
     
  4. Daneel

    Daneel
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    I just read the thread that Ian J linked to. I thought people on this forum were generally nice and open-minded, guess I was wrong....

    tahirti3 I would love to take you up on your offer but I am away up north in Scotland. It would not surprise me if you could make a good sub at the price you have quoted.

    I paid £325 to Uncle Eric for a CHT-10 that I am very happy with but if you look in the US you can find that model for about $350 (£225) and the RRP on a CHT-15 is $799 (£515) not sure about street price. Then you have the RELs which in the lower end of the market at least are supposed to have worse value for money.

    My point being that if a big company like Velodyne with all its R&D and other overhead costs can make a good sub at that price then I see no reason why a guy can't make a good sub for 50% of the price, assuming they know what they are doing.

    The next time I head down to London I'll see if you are free to arrange a demo.
     
  5. ReTrO

    ReTrO
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    I would be most interested to see some pics of this baby.

    What parts have you used on this project?

    Cheers
     
  6. micb3rd

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    I am interested most DIY designs, May I ask the names of what parts you used in your subwoofer?

    Where do you live, I may be willing to come and listen to your system depending on the travel distance.
     
  7. ChrisNic

    ChrisNic
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    Well I wish I had the ability to build my own sub . How do we think Richard Lord (of REL fame) started designing and making subs? Im not supprised Tahirti3 has only made 20 posts when he got that sort of response in his November thread. Yes his sub could be **** but it could be revolutionary (well maybe)!
     
  8. tahirti3

    tahirti3
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    thanks for the interest guys.rough cost of bits is £900.retail.
    i live in ilford,essex.
    someone come and have a listen!!!!

    my system: meridian 565,562v,508.24,dsp5000c,dsp33,two 557 amps,denon 2800mk2,sharp pgm20x etc etc.
     
  9. bunkerbuster2

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    How tight is it tahirti?

    in my experience..it's hard work getting taut LF from a 15" driver (even in a sealed box)

    15 inchers tend to be great air shifters (for obvious reasons) but lack the "snap" factor of a 10-12" driver with a huge chunk of ferrite behind it.
     
  10. tahirti3

    tahirti3
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    i have not tried a 15incher.it sounds pretty tight to me,and is good for music too.i had the x-over on the amp made to start at 20hz so that it would match up well with speakers that can go pretty low on their own.
     
  11. nathan_silly

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    What's the roll-off set to?
     
  12. BadAss

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    Could we have a list of the parts you have used with prices to match?
     
  13. bunkerbuster2

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    which driver are we talking about here tahirti?

    I'm sensing something made for the soundclash mobile market.
     
  14. tahirti3

    tahirti3
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    i set roll-off around 40hz.the drive unit is a modified pro jbl.the amp is from bk but again modified to my requirements.
     
  15. bunkerbuster2

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  16. Ian J

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    Please keep this thread on topic or I will start deleting posts. Anyone who wants to play "Mine is bigger than yours" has their own thread now.

    [I have deleted 1 contentious irrlevant post - Spectre].
     
  17. ChrisNic

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    I second the request for some pics! What is the box made from and what sort have finish have you got?
     
  18. tahirti3

    tahirti3
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    no pics ,don't even know how to send them.the box is made of 30mm mdf,and because it is small it seems pretty rigid.downward firing driver and a boring black finish.i can only compare my sub to the stentors that i had,and although the rels were good,they could be made to bottom out without too much effort.my sub does not bottom out at all,even with the x-over set at its highest point.it may not be perfect but it is over a third smaller than the rel and fills my 30ft by 15ft room with ease,also i still get good output without having to corner load the box.the rels had to be in corners to give good extension.
     
  19. ReTrO

    ReTrO
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    Look forward to more info. :D
     
  20. Smurfin

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    So did anyone go for a listen?
     
  21. Spligsey

    Spligsey
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    It's really good to have you moderating again Ian.


    tahirti3

    I take it your missus is not too keen on your choice of sub !!!
    A sneaky move to wait until she's AWOL:D

    Adz..
     
  22. tahirti3

    tahirti3
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    no takers then,on my offer !!!!!!
    wives don't understand our need for bass,so it is best to play while they are away.
     

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