Elemental Designs ED 13Kv.2 ChrisFish

Discussion in 'Subwoofer Box and Custom Fabrication' started by electrolytic, Sep 29, 2008.

  1. electrolytic

    electrolytic Full Member

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  2. electrolytic

    electrolytic Full Member

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  3. Fish Chris

    Fish Chris Full Member

    Okay now.....

    just to confirm a couple assumptions;

    As long as I keep the cubic footage, and port size / length the same, it won't hurt anything if I change the shape of the box to a slanted face design, correct ? I'm pretty confident with my math :)

    Another interesting thing comes to mind..... I could very easily build the 33hz box design you have posted here, then convert it back to the 39hz box you first posted, if I wasn't completely happy. Simply, chop the ports off shorter, and use blocks inside the box to take up the required amount of space.

    Oh, and did you say that your program chooses the number and size of the ports for you (which are best for these subs) ? The reason I ask, is that one 6" port would look a little cooler, and be a bit easier to build. Will it let you type that in ?

    One last thing, speaking of ports... The 33hz design you have shown, calls for the ports to be 16" in length. So, would I A) have to use elbow joints, B ) have to have the port openings exit the side of the box, or C) be able to have several inches of port extend out of the box (preferably, the top) > which BTW, would make it easier to convert to a 39hz box later, if I wanted too ;-) LOL

    Anyway, thanks again. I'm hoping this stuff is just fun for you, as I don't wan't to be a pest,

    Peace,
    Fish
     
  4. G3n3R@1

    G3n3R@1 Full Member

    i doubt one 6" port will be enough port area. two 6" ports should be plenty though.
     
  5. electrolytic

    electrolytic Full Member

    hey, ok the 33 hz box i designed is 18" deep i believe and the ports are 16" so there is enough room to keep them on the front panel with the subs. If you want a slanted front then i guess you would have to put the ports in the sides. So i designed a box for you with a slanted front and a single 6" port at 18" long which will have to go in the side. With this particular box if you don't like it tuned to 33 hz and want more...which you will, lol you can just cut the port down to exactly 10" which will put the box tuned to 39hz and you don't have to change any other dimensions, it works out nice.
    The yellow line in the graph is the box at 33hz and the green line is the same box with the port chopped putting it at 39hz. I think the green line clearly outperforms the yellow overall but you have a choice now and it can be changed after. The 18" long port design puts it at 33hz so try that first. Here are the results for 33hz.
    Oh ya, 6" pvc pipe is not readily available at most places that's why i go with 4" most of the time.
     

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  6. electrolytic

    electrolytic Full Member

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  7. electrolytic

    electrolytic Full Member

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  8. electrolytic

    electrolytic Full Member

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  9. electrolytic

    electrolytic Full Member

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  10. electrolytic

    electrolytic Full Member

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  11. Fish Chris

    Fish Chris Full Member

    Okay Electrolytic....

    you've twisted my arm :)

    Actually, I think I've finally come to a realization; Correct me if I'm wrong...
    But while I've been trying to buck the idea of a little higher tuning, the fact is, "these particular speakers" really want to be tuned at 39hz.

    I guess if I go on and tune my enclosure to 39hz, and this does not give me low enough bass, the smart thing to do "would not be" to change the tuning of these speakers from 39hz to 33 or 30hz...... but rather, to get some different subs that "like to be" tuned to 30hz, or even a bit lower, and build a new box accordingly.

    Speaking of which, do you know of any subs which hit "extra low", yet are $200 or less, and in the 400wt RMS power range ?

    And would most 15"s be better for ultra-low bass, than 12"s (of the same brand and series of course... to compare apples to apples) ?

    BTW, I heard (felt) a Cadillac Escalade near my work yesterday, that had to be hitting 25hz or lower "with force" ! Of course it didn't really sound loud, even standing 30 feet from it... But I walked into the store, and it actually sounded louder, because our store is quieter {without the road noise from passing vehicles and such}. So then my co-worker comes out from the back of the store, and asks, "Did you hear that stereo slamming" ? He was surprised when I told him that I walked right past it and "I felt it more, but it probably sounded louder inside the store.... and maybe even just as loud, in the back of the store.
    Ultra-low bass is some trippy stuff.
    But it's intriguing to me, as its not the norm. I wish I could have talked to that guy, and found out what he had going on in that Caddy.....

    Peace,
    Fish

    PS, Hey Electro, you will have to be patient with me (believe me, its killing me more than you ! :) ....but although I already have all my styereo equipment {amp, HU, speakers} I still have to have an alarm installed.... build my rear false floor and wall... install my extra battery plus isolator. Probably another $1200 before I can actually listen to the first tune :-(
    Good thing I'm a hard-core fisherman ! I'm quite used to waiting :)
     
  12. aznboi3644

    aznboi3644 Full Member

    one 6" port is enough...also have you ever really heard a 25Hz sine wave??? I doubt that caddy was playing it with force
     
  13. electrolytic

    electrolytic Full Member

    hey chris don't worry about it, it's a learning process i know it doesn't make sense until you can understand why lol if that makes sense. Don't let me rush you man, just messing with you. I enjoy doing it. Take your time do it right the first time. The last box i designed should hit deep and low but be crazy loud at the same time lol. Just because it's tuned higher doesn't mean it can't hit the lows just as good or better than a box @ 30 hz. Like azn says it's all enclosure dependant. Sub brands don't matter much really, the enclosure is more important if it hits low or not.
    If you go back and look at post #27, the last box i designed. Look at the Normalized Amplitude response graph. Just think of that as a bass graph. You see how the green line-39hz box hits pretty well the same lows at the beginning of the curve but then jumps way up past the yellow-33hz box. They are basically the same in the low end lower frequencies but you get the biggest gain after say 33 hz and up. Don't get stuck thinking only boxes tuned low hit low. Hope this helps lol.

    Oh the kicker L5's and L7's do have a deeper harder kick to them other than that any other cheaper sub is the same, depends on enclosure design mostly.
     
  14. electrolytic

    electrolytic Full Member

    Here's the graph i was talking about.

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  15. jonnyv713

    jonnyv713 The Young Gun of CAT

    If I recall, Ranger told me that its not the tuning that makes low bass, its the size of the enclosure. I have a 5.25 ft^3 box tuned high and it loves the low notes. Ranger said the higher tuning the louder and bigger the box, the lower the bass its capable of. He tunes his everyday boxes to like 35hz and his comp boxes to 40-45hz.
     
  16. Fish Chris

    Fish Chris Full Member

    Hey Jonnyv.....

    So you have four 13Kv.2's, in 5.25 cubes ? That's about 1.3 cubes each, and they hit nice and low, huh ? So with mine in 1.5 cubes each, do you think I might be pleasently surprised ? :)
    BTW, what is your enclosure tuned at ? Do you have your box design shown anywhere ?

    Hey did you know that our 13Kv.2's have been discontinued ??? I hope we don't have any problems with them now.......

    Peace,
    Fish
     
  17. aznboi3644

    aznboi3644 Full Member

    13Kv.2s are discontinued
     
  18. G3n3R@1

    G3n3R@1 Full Member

    eD is coming out with a whole new series.
     
  19. jonnyv713

    jonnyv713 The Young Gun of CAT

    no only have 2 of them in there now. when i have all 4 it will be about 10 or 11 cubes
     
  20. Fish Chris

    Fish Chris Full Member

    Wow !

    Jonnyv, you said
    Now this is very interesting ! I can do 2.3 cubes per sub if it would help me hit the lows.....
    But let me ask you this; Comparing your 13Kv.2's in 2.6 cubes each, to other subs you have had (or even just, that you have heard) how 'musical' would you say your ED's are ? Are they still tight ? How many watts are you giving them ?

    Electro, not to pit you and Ranger against one another (obviously, you both know way more than I do :) .....but do you go along with higher tuning = louder, but bigger box = lower ???

    Fish