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Thread: 2203 Subs

  1. #16
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    Yes

    ~ 3 cu ft tuned to ~ 30 Hz

    LE120HS

  2. #17
    Senior Member Guido's Avatar
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    Quote Originally Posted by Giskard
    Another example:

    Dual 2203H in 3.2 cu ft tuned to 26 Hz with JBL BX63.
    This looks damned wallshaking

    Thanks for the excellent support with this!
    BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone on Pass XA 100.5

  3. #18
    Senior Member Guido's Avatar
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    OK, I put them into 3.2 quft with bass bump at 30Hz as my sub module can't lower.

    I get a strange problem with cone displacement between 30 and 50 Hz.
    What to do ?
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  4. #19
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    Tuned to 30 Hz with bump filter centered at 30 Hz try something like a 4 dB bump instead of a 6 dB bump.

    Have you built anything yet and listened to it or are you still planning?

  5. #20
    Senior Member Guido's Avatar
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    I'm still waiting for the 2202 baskets, so currently I'm just planning.
    BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone on Pass XA 100.5

  6. #21
    Senior Member Guido's Avatar
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    Unhappy Again help needed

    OK, I can't get this into BB6

    My Sub Module has a subsonic filter with 24dB/oct at 20Hz means -3dB at 20 Hz, right?
    Further I have a parametric EQ variable between 30 and 50Hz, Q~1,2 and bass boost 0 to +6dB
    Lowpass Filter is 50 to 150Hz, 18dB/oct

    Any help appreciated.
    BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone on Pass XA 100.5

  7. #22
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    The "easiest" thing is to plug the whole schematic into pspice.

    Where's the schematic and I'll try to do it for you.

  8. #23
    Senior Member Guido's Avatar
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    Thanks for that offer Giskard. Prob is that I do not have the filter schematic

    This is driving me mad.
    BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone on Pass XA 100.5

  9. #24
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    Send them an email and see if you can get a service manual from them.

  10. #25
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    Ok, let's see what happens here.

    Dual 2203H
    Vb = 3.2 cu ft
    Fb = 30 Hz
    80 Hz 18 dB/octave low pass
    30 Hz 12 dB/octave bump filter with variable Q

    Red = Q of 0.96 (+1 dB)
    Grn = Q of 1.13 (+2 dB)
    Blu = Q of 1.30 (+3 dB)
    Mag = Q of 1.49 (+4 dB)

    I suppose I wouldn't go higher than Q of 1.5 I guess.
    Q of 1.49 just starts to push past xMax.
    Q of 1.49 reduces max electrical input from 200W to ~ 185W
    You're above 116 dB with 185W in.

    Build it, see if it works, see if it blows up. If it does, don't send us the bill.
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  11. #26
    Senior Member Guido's Avatar
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    I knew it... with 2203s you can't resist

    Looks very very good. This will get SOMETHING with the biased 4313 clones
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    BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone on Pass XA 100.5

  12. #27
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    Yeah, it's a potent little sub considering it's size. Similar in size, VLF response and total air movement to a single Citation 7.4 but with ~ 4 dB more efficiency and ~ 50W greater power handling ability.

    I might be inclined to make the baffle kind of a V shape to fire each 2203H into the room at a slight angle. I don't know, something like 5 or 10 degrees maybe.

  13. #28
    Senior Member Guido's Avatar
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    Reconing done

    Here they are

    They look pretty dangerous

    Today I start cabinet building.
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    BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone on Pass XA 100.5

  14. #29
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    Quote Originally Posted by Guido
    They look pretty dangerous


    Those look like pretty good recone jobs dude! Better than factory!

  15. #30
    Senior Member Guido's Avatar
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    Today I sprayed the primer

    I'll have to do it more precise this time as I want to spray the sub in glossy black. Well not piano finish but I'll try my best
    BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone on Pass XA 100.5

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