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Everything posted by XxAndreaxX

  1. hello guys, I need urgent help with my enclosure. now to begin with, the first problem is my car's layout. the trunk is completely sealed from the cabin, so only a port can enter the cabin (see pictures) the box is 70liter, recomended for 1x MTX 15 not for 2, I can obviously quit one if I see that one is making more output than 2 that's not the point. I made some tests, and the box is almost well tuned, the bass kicks in at 40hz (although I tried to tune it at 30hz) but its okay. the problem is that once I close the trunk, I get almost no db in the cabin. otherwise with open trunk, it sounds "well". how can I solve this?? do I need a 4th order? something else? is the trunk acting like wave cancelation? thanks guys
  2. New Idea, maybe the easiest and cheapest solution a normal isobaric bass réflex, with an added slot, that bends both woofer and port directly into the cabin. is this an option??
  3. still massive?? 😢 on oficial MTX spec sheet of my subs, it says 50liter for sealed and 70liter for ported. is this also wrong?? 70liter is a relative small enclosure, and if isobaric, should be 35liter thats a mini box. so if I do a 4th order 70+50liter isobaric, it gives 35+25 liters. is this a plausible calculation, or is this totally wrong?? what should be a right calculation instead?? what could be a volume for a 12" a volume for a 15" a volume for isobaric 15" must not be exact, but to have an idea at least
  4. bro, for you its everything obvious, for me not because I don't have a clue. I tried to study the whole topic, and I read everywhere that isobaric needs half the space than 1 normal driver. is that true?? if its true, would the 4th order of a doublé isobaric 15" be smaller than a single 12"??
  5. ok 3:1 ratio you mean ported 3 and sealed 1 right?? what would be the difference if I thorw in an isobaric 15" instead of 12"?? wouldn't I gain a Little bit on space??
  6. yeees, you tell me to buy a 12" and build a ported box, I can't because i get cancellation! seems like it has to be at least 4th order to make any sense!! that's why i put isobaric in equation. if isobaric halfens the volume of the enclosure, maybe I can get a decent size enclosure for my needs. a normal 12" would also eat up the whole trunk if the layout is 4th order. maybe I made an error to buy 2x 15", but maybe there's a way to fix it without throwing everything away
  7. uff its hard to deal with you guys eehhh. you are experts, but until now i did not get any solution for my problem. I'm also expert in other stuff like engine Tuning and anabolic steroids, and if someone is doing something wrong, i try to help to get him understand, and get the best solution. you only tell me its all shit, but give me no solution, other tan throw all away and buy an 8" and fill the freakin trunk with wood
  8. how do I calculate a 4th order isobaric, simply dividing by half the sealed and the ported box, maintaining the port size?
  9. no, I don't have, I'll have to experiment and measure by eye and by ear. I want to try 4th order and 6th order, simply connect the sealed box with a randoom tube to the ported box. Its only to experiment with my trunk, before I throw the whole box away and start from 0 anyways, correct me if I'm wrong, i could start from scratch with an Isobaric 4th or 6th order box, that's not too big, thanks to isobaric. I know its imposible for me to calculate, but maybe someone could give me a hint.
  10. buaaahhhh I got a mega Idea, maybe I can go on doing experiments on my frankenbox. mount a plexiglass table in front of the woofers, maybe 2-3cm away, to get them isobaric. then, mount a diagonal plate, behind one of the 2 woofers, to make it sealed, and the other one, stays ported. I know, the second woofer will have aprox only 50liters for ported space if not less, but its only an experiment to see if I gain something sealing out the trunk or not and anyways, if the rated volume for my MTX is 70liters, with isobáric should be 35liters, so in a 50liter box, I still have 15liter more tan needed right? hehehe I'm a genious!!
  11. bro I'm just trying to learn something. I have 2 x 15" and don't want to throw them away, whe saw that the only way to get something out of my shitty trunk is doing some bandpass, every ported bass réflex would end up in endless cancellation. but as you said, bandpass would mean a monster enclosure, I' don't have physical place for that. Isobaric, could maybe help with space, that's why i mentioned it.
  12. guys, I've been Reading about isobaric push-pull enclosures. they are often options for much smaller enclosures. could you explain what a 4th order push/pull would look like, and size for my 2x 15"? just curious thanks or even this guy here:
  13. how does a 4th order sounds like??? a restricted band sealed box, or a bass réflex?? you know what I mean, that dry punch of sealed, or that longer muddy punch of bass réflex?
  14. bro, you can't compare top end sundown, to the lowest end MTX. you have 3 times the excursión in any sundown. the designed liters for my MTX is 50liter for sealed and 70liters for ported. so, in a 4th order, I immagine I need around 120liters, right?
  15. ok, i figured out, that bass réflex opposite to woofers, is a bad Idea. that's why I was thinking about flip everything, and put a vent at the same side as the woofers, and fire everything into the Little hole that sepparates cabin from trunk. but the réflex if its in the middle, it will fire in to the cabin, the rest will bounce back at the seats. so the vent would end up like good (a), but the woofers will end up like bad (a) thanks
  16. I have an Idea, if I put a frontfiring ported box at 45º?? meaning, it fires all, both woofers both ports, 45º up to the cabin. most of sound will bounce back due the seats, and the hole to the cabin is not big enough?? or should I mount a separation Wall around the woofers, to separate from the trunk??
  17. bro, I only have one vent hole to the cabin, its in the middle of the two back seats. The only way to get sound waves firing direct to the cabin is that hole. IMO I should consider 4th order, maybe only with 1 speaker. Yesterday, doing further tests, Lows are playing "great", but higher midbass, its total cancellation. don't get me wrong, i don't want midbass, but my freakin taramps don't let me filter it away and it gets a constant mess of distorsion.
  18. yes, he has no quality whatsoever, no Deep bass, its set between 80-120hz, and the enclosure is done for that purpose, he plays full range on his subs. but despite the low quality, it sounds very loud
  19. flexing windshields with single 15 low excursion??? A brazilian friend, has doublé 15" in a biiiig enclosure, sounds loud, but faaar away from flexing windshields
  20. Little, like 500RMS high sensibility, its 2 muddy 15" MTX, but I love that sound. speaking about that, I compared it to single 15" in a proper enclosure, and proper trunk, and they sound very similar. my trunk is very complicated, too sealed for standard frontfiring bass réflex, not enough sealed for using the trunk as 4th order
  21. yeah bro, for shure, I'm building up some experience. I could also try to build a 4th order with only one woofer and use the other one as spare or make a sealed box out of it. I think 4th or 6th order is the only way to work in my car's layout right?? I have to seal one side, and throw everything in the cabin through the port
  22. oke I just made some tests yesterday, and some Little adjustments, i came to the conclusión that the db are correct for my needs, I know I could pull out of 2x 15" much more than that. but I did not buy the 15" for SPL, but more for the sound they make. I'm happy with the sound, and like I said, I could try to stuff wool to gain some extra volume and limit bending-impact of the bad enclosure.