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JJ.

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Posts posted by JJ.

  6. external porting>?

    in Subwoofers / Enclosures

    Posted

    EDIT: Since i had a double post i thought i would come up with something, might be able to tweak from here if it doesn't work out.

    http://box1.jpg

    Thanks for that dude, going to go back and re read the torres thread as I don't think I am getting my head round it too good after using BBP6 for so long.

    JJ

  7. external porting>?

    in Subwoofers / Enclosures

    Posted · Edited by JJ.

    Ok so all box will be 1" thick as I already have sheets of it with a 2" baffle was going to do port in 2" so I can get a mega flare rather than just a round over.

    Appreciate the help guys trying to go state style build as you seem to tune/build your boxes different to us in the UK.

    So bracing is taken care of its a 1" diameter steel bar with a plate welded either end to bolt to front baffle and rear panel so that will be solid. I've allowed the .25cuft for that.

    Not sure why your saying 3 shared walls as the port will bolt on top of the box?.

    Sorry if it sounds like I'm being stupid guys never used Torres calc and never had an external port have ays done slot ported boxes/walls.

    I'll aim to be around 31-32hz tuning wise but as said with a drop on port I can change very easily.

    JJ

    (null)

  8. external porting>?

    in Subwoofers / Enclosures

    Posted · Edited by JJ.

    OK I think I have corrected the bits you guys were on about have also changed material thickness to 2" all round. the only thing not accounted for is there will be a 1" diameter steel bar front to rear internally for bracing which should take it down to bang on 12cuft so six cuft each which is spot on what DC recc, obviously the top panel the port is sat on will only have a 4" gap at the back couldn't draw that in sketch up as I am not so good with it!.

    Thanks again for any help.

    JJ

    box2img.jpg

    box2.jpg

  10. external porting>?

    in Subwoofers / Enclosures

    Posted

    Whole box will be 2" thick and be braced the sketch up was just to show better than I could describe what I am thinking the port will be a drop on port again not part of the box. I checked DC and I do have room on the front for two subs again it's a quick sketch up I'm not that great with it tbh.

    8 batteries and two alts so electrical is good.

    So the box should work ok and you guys reckon to tune a little higher 30-31??.

    Any other changes you can see need to be made?.

    Could some run through the Torres calc for me to show how it should look and where I have gone wrong? With a screen shot if poss first time using this program I usually use BBPro but my comp with that on is dead :(

    JJ

    (null)

  11. external porting>?

    in Subwoofers / Enclosures

    Posted

    The length of the external art of the port longer than the length of the port itself?

    not sure what you are saying dude?.

    If this helps it's a scale model in google sketch up?.

    Obviously it will have plenty of flaring on the port top of port is 2" thick and sides will also have extra material added to round those over the same amount.

    boxsu.jpg

  12. external porting>?

    in Subwoofers / Enclosures

    Posted · Edited by JJ.

    Hi guys currently sorting out an enclosure for my new 18" lvl 4 DC's X2 now I want to do something a little different I am putting them in a box approx 14cuft less displacement of subs and want to put the port on top of the box scooped from back to front of box so port will be above the subs, I am assuming it is the same as doing a slot port inside the box except you obviously do not need to remove port displacement from the box?.

    Not sure on exact port dimensions yet but I want it to be windy so tuning to 27-29hz as last install of 4 x 15" lvl 4's was tuned to 33hz and want to try a bit lower this time again another reason for external port as it will be far easier to change.

    I am also assuming its just a case of cut a slot out of the top panel left to right with whatever width then just building the port onto that?.

    any pics or diagrams would be great and also advice.

    on a side note they are being powered by a SAZ-4500D clamped at 4936w @13v :drink40:

    Thanks

    JJ

    box-1.jpg

  20. new footwell enclosure for lvl 2 8"

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    Well its in and for the modest power sounds bloody good needs some running in as it is bloody stiff at the moment but should soften up nicely will need more power I think to integrate well also but want to run it in and make sure, the main reason for it is to turn the beasts down and bring some kick up front going to spend the next month tweaking to get it sounding balanced with the rest.

     few more pics

    08616eba.jpg

    02ffac2a.jpg

    http://img.photobucket.com/albums/v285/madmale007/ba2dbe9c.mp4

  24. new footwell enclosure for lvl 2 8"

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    I had the same problem with one of my eights. You'll be happy with the new looks of the lvl2-8m2 God knows I wish I could trade all four of mine for them.

    You got any pics mate I've not seen one yet mine is scheduled for delivery 19th.

    Yeah it is White fur for a bit of a piss take will eventually be black and White leather once door builds are done they are temporary.

    Can't wait to hear it bobonit is right front staging should be fantastic for a boomer.

    JJ

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