drewlrox

the bass will destroy you sounds preety badass on my mfw 15, I CANT WAIT to see what the 18 does w/ this song its gonna screw up my foundation or something lmfao.

Not yet but I will be ordering within the next 3-4 days. I can't wait to hear it either the main reason I am building it is because the Mfw-15 I have now is built with very unreliable parts, I'm on my 2nd driver and as of yesterday 3rd amp (cap blew) the company that makes it went out of business so no more replacement parts biggest waste of $600 ever. it does perform decently though. I'm positive this DIY will laugh at it though can't wait to hear it the first time.

Nvm i pirated that cutmaster program real quick and it looks like i need 3 sheets.

Ill post plenty of pics

Im allready going over budget so im going to just run it as a big ugly box until i can afford to finish it.

haha allright cool.

I think thats preety normal, In all 3 of our veicles (Cadillac escalade with 2 batteries, bmw stock electrical, and dodge nitro suv) the same thing happens.

Is this going to give me any problems? more then half my use is going to be for music!!!

Yeah there is a newer Q file to download because they changed to the btl style magnet its kind of hard to find though.

its 1:30 by me and im tired so im going to bed, unless your still on and have the calculations done/close to done. if not ill just see them tommorow. thanks for all the help i really appreiceate it. your help has saved me tons of research.

I Read the thread, interesting. i know about the pre out voltage. im hoping the mackie will accept my sub pre out. none of the other amps say semi pro and pro, they all either say pro line levels or just the voltage.

Digging deep into the manual i found this "The M-Series amplifier expects to see a nominal signal level anywhere between the –10dBV “semipro” and +4 dBu “pro” standards, meaning almost any line-level mixer or other device can be plugged into the amp’s INPUTs. Use the Gain controls to adjust the gain of the amplifier to match the signal level you’re using." so i think that means i dont have to worry about my sub preout being too low and having to buy one of those boxes. reading reviews online people say you can push these HARD!!! people will run them for hours gurring gigs hitting the clip limit (which you cant hear because of some technology they have) so it looks like its built really solid.

I found an AWESOME AMP to use instead of the Behringer. I geuss Mackie is doing bad with buisness and their Mackie M2000 which specs the same as the Behringer 2000 W at 4 ohms bridged is only $300 reconditioned http://www.pssl.com/Mackie-M2000-AMP-Power-Amplifier-400W--8-ohms also see it for 250 on ebay. a quick google search brings back places selling it for $750-$1100. if i were to grab this amp off this deal could i use it just like the Behringer or will i have any problems anyone knows of getting it connected??

I'm at school on my phone so I can't send them now but I remember a few things about it. It's 10 ft cube after all displacements its either 14 or 16 all together. The port was a slot port about 95 inch surface area which should be plenty at 3.5 inch tall 47 inches long if I calculated it right around the corner. Tuning was about 20.5 hz. Double baffle. I'm almost positive all measurements and displacements are right, making sure by running them by you. I'll send it in like 4 hours when i get home. Thanks again. That's awesome I've seen your videos and they move a lot of air it makes me excited to build my Q. Can't wait. That's awesome that they want you to design boxes!!

I have a sketch of what i think is right, could i email the sketch to you to double check the numbers?

i am having a hard time finding out what measurements i need to get the tune i want. i know i posted some before but i am confusing weather i need the volume of the box before the port or after entered into winisd.

Yeah i am going to be using it for music mostly so the extreme lows dont appeal to me too much. allthough the 15 it is replacing is tuned to 19 hz. i dont think i will miss anything though beuause this has so much more power i think it will still handle low notes better then what i have now.

GREAT to hear i think i may have my final box... 28x30x26 around 10 ft3 after bracing. 3.5X42 slot port bringing the tune to 22.6 and final volume of 7.8 after displacement and port. now i am not sure what size cuts i have to make and am hoping my math is right lol.

Using winisd for a plugin i found for d2 18 q 2010 it says i just barely bottom out at 700 watts but at 1000 i EASILY bottom out at 17 hz and anything lower then that bottoms hard, i plan to be pushing this near limit with cooling package so idk :/

what about 3 4" in a 10 foot enclosure at 18 inches long? that would put me at a 22 hz tune with like.... what 70 sq in surface about? then in addition to having the 22 tune i may be able to plug one and get a tune of 18 if i can get away without chuffling. people say its very hard to make noise with an aero port and dont need as much surface aera

am i going to need a ssf?

What if i were to take the easy way out and throw one of these in? would that work? ive heard it is easier to avoid port chuffling and can boost db a little with the flares.

I was having some dobuts about the Q because i was reading people say "you need 30 ft cubed to reach a qtc of 7" which is rediculous. until i read that the new 2010 q's increased motor force brings that down to about a 5 cube enclosure sealed to reach a qtc of 7 thank god. building a ported enclosure will get me much more spl but Im not sure if im up for the task of building one, seems sort of difficult.

Ive been looking at alot of information on building subwoofer enclosures and it seems like it can be difficult, anybody have any good links to guides or helpful tips on buliding?

Allright sounds good, thanks for all the help. i was looking over your diagram and its probably just me making a mistake but using slot port calculators online i am getting 5-6 inches shorter then your port length for a 22 Hz tune, again probably just me but wanna make sure.