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  1. #1

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    Talking GNX 124 box plan????

    Has anybody used the GNX124 in a bandpass??? I don't have monster power but I want to feel the bass like I had 1000 watts going to them. I have 2 GNX124's and a 400 watt amp to push them. Ideas anybody???
    Thanks

  2. #2
    Polk Customer Service
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    Here is a dual GNX124 iso push pull band pass.


    Thanks,
    Kim
    Attached Files

  3. #3

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    Default Attn: Kim

    I am unable to load the attachment you sent. Something about my graphics conversion filter??? is there a web address that I can go to??? or could you e-mail me the info in a different form???? I would really like to see this box design, as you have my full attention
    Thanks
    thoffmann

  4. #4
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    This is a "Microsoft Word" document. Option # 2, send me a fax number and I will send you the plans.

    Thanks,
    Kim

  5. #5
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    The sealed chamber # 1 internal volume is .95 cubic feet. Chamber # 2 ( the vented one ) has a internal volume of 1.5 cubic feet. Chamber 2 is tuned with ( 2 ) 4 inch inner diameter ports that are 12 inches in length.
    The external dimension are using 3/4 inch MDF are ;
    16" high x 27 3/8" wide x 16" deep. The drivers will be mounted face to face separated by the dividing panel ( need long screws for this ) and the driver in chamber 2 will be wired out of phase.

    Kim

  6. #6

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    Question

    Would it be possible to have 1 six inch port instead of 2 4 inch ports? If so how long would the 6 inch port need to be???
    Thanks
    thoffmann


  7. #7
    Polk Customer Service
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    If you were to use a 6 inch inner diameter port with a lehgth of 12 inches, then this will tune the enclosure to 54 Hertz and the vent air velocity will be a little lower. At 150 Watts the vent air velocity at the tuning frequency is less than 9 mm a second.
    The two 4 inch diameter ports, 12 inches in length will tune the enclosure to 52.9 Hertz and the vent air velocity is raised only by 1 mm a second to a level of 10 mm a second with a 150 Watts applied at this is at the tuning frequency. Just make sure to round over any rough edges on the port tube to minimize turbulence.

    Thanks,
    Kim

  8. #8

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    Quote Originally Posted by Kim
    then this will tune the enclosure to 54 Hertz and the vent air velocity will be a little lower. ...
    The two 4 inch diameter ports, 12 inches in length will tune the enclosure to 52.9 Hertz

    anytime anybody bitches about current model polk stuff - they should be shot in the foot and then made to read the above post and realize the error of their ways.

    "we've come a long way baby".

    the new DB12 slot port box by polk plays (on paper) down to 27 hertz - even if you play devil's advocate and throw a little fudge in there - call it 30 hertz - you're still in "happy bass land" - still in kicking ass territory... a 50-something hertz resonant box frequency for the above mentioned GNX's is utterly sickening.

    why am i reading old posts? i dunno - its 1:15 in the morning and i'm tired.
    "With your own attitude it is hard to survive here... But who gives a damn, we are here to change the world, and we dont need a password for that."
    - Anurag

  9. #9

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    ....memories...

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