TreezNSteez

im having one hell of a time trying to cut a couple 45's, do i really need them? i have some stuff to seal the edges, its not caulk though. what do i need to brace it. gonna sand it all since theres some excess glue all over the place, and my top wont fit right cause the port walls are a little taller, so i need to sand that down. and finally, will it be a problem since one sub is unloading on the port wall? comments, suggestions?

this is the box i decided to make for my 2 sa12's am i ready to cut it out or is there anything else i need to do? and does the cut list take the port into account? or is that a separate cut?

upgraded to 2 sa12's, 800 watts each. and im not noticing a big big difference in loudness. it shakes everything alot more, and i know im getting more bass. i thought that adding another sub and giving it 300 more rms would be alot louder. when the volume is at 20, i dont notice a difference, but when its at 22 my subs go insane. but my music gets crazy loud too, i was hoping that my subs would overpower the lyrics and music, so i would get nice bass without having absurdly loud singing and whatnot. im wondering if maybe my box isnt great. might sell it and get a jl basswedge for both subs, cause that would not only fit better.. but my single sa sounded great in that box. ...and while im here, i didnt upgrade my electrical yet and im not seeing any problems, should i even bother upgrading? what do you guys think?

yessir That sucks ass. Honestly I'd probably cut that up, but don't go doing stupid things for bass that will hurt your trade-in value (unless you own an old beater like I do). looking to sell it after winter. so sadly thats not an option.

yessir

opened my trunk and saw that one sub was pressed against the wall. that cant be good. gonna put a board or something to keep it from sliding. im sure that if i rotate the box ill get a little more output. almost always have the single seat down (the one without the amp)

for sure, ill go take some now

i added 2 dowel rods placed in between the subs going from the front to the back. and added 1 dowel rod on the port wall where the one sub unloads. thats all i did for bracing. im gonna check if they are in phase in a little bit. right now my subs are facing the trunk, i have one seat down to "vent" into the cabin, but the box is so big that its kinda blocking the entrance to the cabin, so i might rotate the box and have it facing the cabin. @S.DeYoung the drive is a little far, but thanks for the offer. if i ever go to WMU to visit friends anything, ill hit you up.

Even though the doubling of power MAY yield 3dB more output in a perfect world it surely won't in the real world. Losses such as power compression and impedance rise alone will reduce that effective difference. Adding power is the least efficient way of gaining output. My bets are on the box not being quite right. OR the wiring to the subs isn't correct. OP, have you verified for certain they're wired correctly and in the same phase? Remove the wires from the amp and touch a 9V battery to them for a moment. They should move the same amount and the same direction. If they do then your box has some leaks or a problem with it's placement causing cancellation (high on my list due to the differences in output at varied frequencies according to your report). If they don't then you have one wired cancelling itself out or the other sub out. It's a good quick way of testing that just to be certain its not an issue. My money is still on the box tho. im gonna try that later on when it warms up a little bit. im almost positive its the box, im thinking i should have made the box 3-3.5 cubes instead of 4 cubes

how can i check how many db's im putting out? can i just take it to a local shop? im pretty sure a place like RKST could do it, im just curious as to what im putting out

ill have to look into that. my box is built to specs, granted its probably not perfect physically, but on paper it meets the requirements. probably should have made it a tenths of a cube smaller but o well.

idk if your still deciding on an amp or not, didnt read replies, but mb quart is pretty good, definatly puts out rated.

height: 16 width: 35 depth: 21 port height: 14.5 port width: 4 port length: 26 port area per foot: 14.32 cant get pics til tomorrow. wouldnt just having another sub make it louder? more cone area.? like i said, i notice a huge difference when the volume is at 22, but how come i dont have more bass at lower volume? and would i need to make a new box to tune it different? if i added another baffle i would have.. 15.11 port area/ft, 3.84 cubes, 34.45 hz tune. would that help or hurt me?

just double checked my box specs. 4.05 cubes tuned to 33.5 hz any by "feel" i guess i mean i want it to shake my seat mostly. right now it shakes my eyes, or glass idk, so i cant see straight. all i know is that everything outside of my car looks somewhat blurry, and i absolutly love that. idk, tomorrow i can get a better feel for it, im just curious as to why im not louder. more subs + more power. after checking my box, built to specs so im not sure whats to blame.

well i wanted to get loud, but i also wanna feel the bass. feel > loud if i had to choose one. what would be the best tune for that?

i guess my box is tuned to high. i think its around 35, should i go down to about 32?

actually let me put it this way. some songs are louder, some songs i feel the bass more/less, and some songs are the same as before if not quiet-er

2 sa12's powered by a MB Quart ONYX 1600.1

i think my tuning is already off. i need to plug it all back into the calculator and see what comes up. hopefully its not to bad because theres no way in hell im making another box.

ok, ill just skip the 45's then, not worth the hassle. my saw isnt the best. just picked up a couple dowel rods. getting my amp tomorrow, so hopefully i can get this box done tonight.

oh yeah, i was planning on having a double baffle. and do i need 45's in all my corners?

im using 2 sundown sa12's. the lower right hand corner is just unused space. somehow my pieces didnt fit perfectly.

i forgot to clamp after i glued. will that result in any problems? and when i tried to put a screw in it didnt go in straight, so i think im gonna either use nails, or use the nails to make a hole for screws. do i even need screws?

coating the inside of the box with fiberglass resin, for smoother airflow. rubber washers to help seal where the screws are.

now that i got my subs and box done, its time to look for an amp. not looking to spend too much on an amp right now. would like to send 600 rms to each sa12. trying to stay under $300, ive been looking around the web and found a couple that i might be interested in. but i wont get it unless you guys say its a good buy. this one i just came across, not sure about the brand though http://www.woofersetc.com/p-7635-bamf-20001d-power-acoustik-monoblock-2000-watt-class-d-amplifier.aspx heard soundstream was pretty legit, so i found this one http://www.woofersetc.com/p-9571-dtr11700d-soundstream-1700w-d-tower-series-class-d-monoblock-power-amplifier.aspx read on Steve Mead Designs that this was good for the money, but is power hungry. http://www.woofersetc.com/p-8840-brz17001d-hifonics-brutus-series-1700w-rms-1-channel-monoblock-super-class-d-amplifier.aspx those are the 3 that i can recall right now. are any of them worth getting as a temporary amp? suggestions?