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PB10-ISD and bfd

Discussion in 'Subwoofers' started by bob1, Dec 5, 2004.

  1. bob1

    bob1
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    After receiving the sub I noticed I had a couple of peaks one around 40hz and another around 80hz.After a couple of weeks with the sub I realized I needed a bfd, on the really low stuff the sub sounded great but as soon as it hit one of the peaks it sounded boomy. A radio ham I knew was selling a brand new one so I jumped at the chance.
    After lots of messing around with the bfd I have now got it set as I like it and after watching U571 today all I can say is it’s the best my system as ever sounded . :thumbsup: :D

    [​IMG]
     
  2. recruit

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    Bob that's excellent :thumbsup: it's amazeing what the BFD can do and especially as it is so inexpensive.
    When you buy a good sub it really allows you to tame it to you're room! :)

    John
     
  3. Daneel

    Daneel
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    That curve looks very similar (mine is flat to 18hz) to what I get out of my ultra for near 3 times the price. The PB10 is looking like more of a bargain every day.
     
  4. bob1

    bob1
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    It really shows what the sub can do now i didn't have the film on loud but i could still feel every wave the sub hit (no jokes please) and every explosion,even the ones behind me :cool:
     
  5. askegg

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    That's great to hear - I just purchased a BFD in anticipation of my PB10 arriving :)
     
  6. whats_this

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    looking to buy a BFD but where are they avaliable online?
     
  7. recruit

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  8. whats_this

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    thanks recruit, think i have found my christmas present :D
     
  9. bob1

    bob1
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    The bfd will make a big difference to the sound ,might be a bit hard to setup christmas morning ,i had to wait a week to set mine up right ,the wife and the pesky kids :rolleyes: :D .
     
  10. whats_this

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    lol, it will probably be an early christmas present, luckily for me so it might even be up and running for a nice christmas day film.
     
  11. askegg

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    I was lucky - I managed to get one from a guy in Sydney for $125 (Australian) +$28 postage. Should arrive today.

    My PB0 shipped yesterday and is making it's way across America. I should have it for Christmas :)
     
  12. whats_this

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    hope you enjoy it mate, looks like a cracking sub.
     
  13. jag77

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    I would suggest putting in a house curve on the BFD, bob1. You might just like the PB10+BFD even more with the nice house curve. :)
     
  14. bob1

    bob1
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    Hello ,i did start with a house curve but never finished it completely ,the graph shown was using one of the other filters and i still have the settings for the house curve.With a bit of luck i should be able to have a good go again with the bfd over the christmas break and carry on where i left off.
    What would you sugest as a curve.
     
  15. jag77

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    This is how I would set a house curve.

    1) Play tones at 70hz, 56hz and 32hz.
    2) Ignore the SPL numbers and go by ear. The aim is to insert narrow band (say about bandwidth 10) at those frequencies to boost those specific points. Test tones should sound as though they are at the same volume to our ears. The lower frequencies will measure louder on the SPL meter, but they should sound about the same to our ears.
    3) Once those tones start to sound just as loud as each other, plot the response down on the spreadsheet. The response will have spikes at 56hz and 32hz because we would have introduced some gain at these 2 frequencies.
    4) From the spreadsheet, interpolate those points to form a smooth response curve that has a slope upwards from 72hz towards 32hz, and a plateau from 32hz to infrasonics. Thats your house curve you need to set onto the BFD.
    5) On the BFD, all you need to do now is to dial in a set of settings that closely approximate this house curve. All done.
     
  16. Cooch

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    just looking at the bfd online. how do you hook it up?
     
  17. bob1

    bob1
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    It uses 1/4 " sockets so you will need adaptors , i got THESE , or you could make your own leads up.Its inline with the sub so you will need 2 leads one from amp to bfd with an adaptor and a lead with adaptor from bfd to sub.
     

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