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maddmatt02

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About maddmatt02

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  1. maddmatt02

    L shaped slot port in box with angled back?

    ok, I got my box designed and ready to go, just have one more question I dont think Ive ever gotten the answer to before (no matter which way it goes though I will probably just build it as is) is how you measure port length if it ends the same as the port width from the back wall. I dont know if I measure to the end of the port. or exit the port halfway to the box wall, turn and go to the edge of the port wall. included is another fancy paint drawing to show what I mean. if its the way I think it is, its 1.412 @ 35.8 or if not its 1.373@34.87. hope I can get some work in on the box tomorrow but probably not.
  2. maddmatt02

    L shaped slot port in box with angled back?

    how do you get it so low? I might be using winisd wrong or something, just stared using winisdpro alpha, might have to go back to regular winisd beta... I input 900 watts under the signal tab, and for 2ft^3 tuned to 35 I need a port of 14"x8" 114" long to keep port velocity down to around 20...
  3. maddmatt02

    L shaped slot port in box with angled back?

    its in a 94 integra, in the hatch area. port/sub both facing rearwards. only thing separating cargo area from cabin is a thin carpeted shelf probably made of some kind of pressboard like the 1/8" stuff lining the bottom of most trunks over the spare. I will play around with lowering the velocity. or I will just say screw the 8s and use my REX12 and build a ported box for that in there. might as well build it a size that will work good for whatever 12 I want to upgrade to as long as its anywhere close to suitable for the RE.
  4. maddmatt02

    L shaped slot port in box with angled back?

    whats an acceptable amount. I can keep it down to about 72 ft/sec or if the port went to the back wall, up to the top, turned again and came back towards the front I can get it down to about 60 ft/sec
  5. maddmatt02

    L shaped slot port in box with angled back?

    4" round will have port velocity closing in on 100 ft/sec and still be 17.5" long, I'm guessing you measure the same way with a pvc elbow in the port construction, you measure the port down the middle and pull from where the lines intersect in the elbow?
  6. maddmatt02

    L shaped slot port in box with angled back?

    oh, also, I have the 8s from the truck I traded in, I have the amp from another build, figured why not use them and keep as much of my hatch free for hauling crap as possible for now. wouldnt buy 8s for the car as a first choice. eventually looking at a single 12 like a lethal injection, GCON, ICON, something along that price range, or a pair of less expensive 12s like RE SCX, IA I12, etc... enclosed/powered accordingly. but Im going to get these 8s in and do a good front stage first this time. best Ive ever had were some audiobahn components off of about 60 watts, made me happy at the time, then always had cheap coaxs, until I just had a bmw with the logic 7 system for a while and man that sounded pretty good, so I would like something like that this time around.
  7. maddmatt02

    L shaped slot port in box with angled back?

    you guys did read the part I wrote about it being a "crude drawing" and the fact that no dimensions were called out. lol. only question was about port measurements, not enclosure size. its going to be 1.3 ft^3 net @ 33hz port is 1x13.5 ~21 long. max velocity 82 ft/sec port resonance 313hz. would like the port to be a little bigger but Ive read up to 110 ft/sec is acceptable and the first port size I chose keeping it down around 60 was 32" long but thanks, Ill make the port square and not follow the rear wall. should I put the port as far back as I can or should I bring it forward a little bit so the airspace behind the port isnt so tight? if I go right to the back wall the cross section of the dead space behind it will be 13.5H x 0"W1 / 5"W2. havent got the exact dimensions yet but the port will go about 17" across the back of a ~26" inside dimension box. if I kill that dead spot all the way across the box it will only lose .5 ft^3. I would have to only bring the box about 2.5" out but that is almost half the depth of the box at the top so its a decent loss considering I only have 8s to save space so that 2.5" does matter somewhat. heres a better likeness of what Im imagining, once I have the port placement figured out I can start accouting for port/sub displacement in my final calculations. thanks
  8. ok, going to build a box for my ID8s. going to angle the back to sit flush to my back seat to help save space instead of making a plain square/rectangle shape. problem comes with the port. I attached a real crude drawing I did in paint, the small diagrams are how I think you are supposed to measure port length when the back wall of the box is plumb just like the front of the box. the large one is the way I am guessing you would measure port length when they arent, if its even doable. red is interior port wall blue is point at which I figure Id measure port length. so, whats the verdict?
  9. maddmatt02

    speaker wire to comps?

    alright, so then what should I run to my subs 8 gauge, Ill be running about 11x the power through it, so seems Id need much more than 10 gauge if I need 12 gauge for the 75 watts to the comps. or is it because of the length of the speaker wire compared to the length of the run from amp to sub box.?
  10. its not so much that money is an issue, I just dont wanna spend it on wiring I dont need when I could buy a video game or a blu ray or something visually enjoyable with the money, the wire will just sit there. like I said though, if I need to I will buy 0 gauge, but with the mix of responses here, Ill just install the 4 gauge and see how it goes. and then also go for a drive and periodically check the voltage with my dmm, and see how low I can get it and maybe decide to find an alt, hopefully not though
  11. maddmatt02

    187 series 15"

    box looks like it could be a 23-24" cube to me, so right theres 5.75-6.6 internal volume before the ports and sub, assuming all sides are 3/4". and how deep are those ports? any reason they arent the full height of the box? seems it would be much more work to build like that. and if it was to keep the port length down because of less port area, a narrower full height port could have been used.
  12. I was checking out this amp. I remember hearing nothing but good things about their stuff years ago, nothing recently. but I hadnt heard of SSA, sundown, Fi, or... either seen it usually for 260 and up, ikesound has it for 199. Ive seen ratings listed anywhere from 990-1150 watts RMS into 1 ohm. their website as a link to there amps but is loading a blank page for me right now, so I also cant find out if it has a SSF? they any good? put out true ratings? underrated?
  13. maddmatt02

    Chrysler 300 setup

    oh, I see that you updated the sig, I know the other day it still said BTL, and I forgot what amp you had listed. thanks
  14. maddmatt02

    Diamond Audio M361 or alpine type r's

    didnt read it and instantly replied talking about subs.....
  15. maddmatt02

    Chrysler 300 setup

    is that an xterminator to each sub? what were you pushing the BTL with?
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