matj1990

i will be running 2 sa-12 d4s need help on what amp i should get both seem realy good !! i can get a refurb sundown for 320 shipped or i can get a crescendo bc2000 new for 339 i like the fact that the cresendo is new and i love the color scheme but on the other hand i think the sundown will put out a little more please help !!! i no i have been a pain lol keep changing my mind over and over and have been talking about doing a system for a while but i have one sundown already the other will be here thursday and like i said im ordering my amp tomorrow just want to make sure theres not something im missing i think i would be happy either way its going to be an upgrade from my bad A@@ power acoustik ovn1-2000d 1250jigga watts 1ohm ftw

max dimensions are 17"h x 31"w x 27"d i will be running a crescendo bc2000 thinking pretty much the same thing anton miller has setup in his cavi it seems to be really efficient i want to be able to hit the low's really well so im thinking 30hz tuning ? this is what i have come up with so far 27w x 16h x 25d using 3/4 mdf should get me 5 cubes after sub displacement of .14 i should be at 4.72 using a 6" aero tuned to 30hz i need 14.5 inch flared and with port displacement i should be at around 4.5 cubes witch is max recommended for the sa-12's if im doing something wrong please let me no i plan on building tomorrow

Just figured i would throw up a video ! this is by no means a professional install and is not finished !!

Your port location is fine and actually it has been doing well in trunk cars to have a side firing port. Yeah turn that box around and you will enjoy it more. my concern was the port will be closer to the inside of the car if i turn it around and will be firing at the tire well

Theres a guy in my area with a term lab ill have to see if i can get him to come over one day for a couple hours and see what happens ! i will make sure to get a video

suppose i could try that sometime is it ...............what about the port location though ?

hmm try taking your dustcap off maybe at 1ohm your just pushing to much air for it to be loud .................only thing that makes sense

How the hell? Magic coils.... if he added another wired the same it would give him 2 ohm maybe his amp pushes 1000rms at 2 ohm ? OP: have you checked the subs coils with a dmm ? maybe its not a d2 or maybe its not wired correctly and you pushing more then u think to it

i would think the flatline would handle 500-750 that that amp is throwing at it fine sounds to me like your clipping it as others have said my sa-12's got warm with my crappy power acoustik pushing maybe 700 watts to both of them i new it was clipping now i have my crescendo bc2000 and i can play that close to full tilt and they run cooler then with the acoustik clipping = heat

Rather than make a new post .... can i fit 4 12's in the trunk properly ?? 17"h x 31"w x 27"d are my max trunk dimensions right now with my current box im hitting 141.6 db on the term lab pass window down box is subs fireing front port driverside rear 17.5h x 27w x 25d very tight fit becuase of height she rubbed pretty bad lol i ask because im thinking about adding 2 more d4s and going .5 ohm

Not if there isnt such thing

set by ear as i dont have an o-scope i do have a multimeter though but i didnt understand the instructions on how to do plus alot of music ranges on sound one song may hit hard but be a lower volume i have yet to hear them make any unusual noise

got my 2 sa-12s in a 5 cube box tuned to 30-31hz using 2 4" aeros anyway i just got my crescendo bc2000 and i was playin today had to be pretty close to full tilt although amp clip light never came on anyway i am very happy with the performance of my amp and subs and box !! once done after about 10 min or so of playing different songs here and there i felt my dust caps and noticed they were luke warm now i went directly to the ports didnt smell anything is this normal ? sorry but first system i have ever had that was capable of actualy flexing anything so i had to play with it

glad to hear how to do no when its to much ?? or do i just go by smell lol as i have yet to smell anything

btw if it helps i was playing some low songs -- white girl -- king kong--i put on ect.ect.

Glad he is ok i no how it is up here and yes we do just hit the damn deer far less damage as for the car well im sure it will buff right out

well box is done lol doesnt look like a pro did it but what the hell i used about 16oz of glue plus a whole tube of silicone she should never and i mean never leak lol seald inside and out plus during assmbly talk about overkill anyway i only used 2 4" x12" Long aeros all they had at the store unless i wanted a whole 8ft tube but it wasnt goin to fit in my cavi lol also when i mesured i forgot to add the width of the mdf into calculations so i had to cut the rear deck a little dont worry i didnt cut anything important box still was very snug all im going to say is i figured i would have to redo the aero ports but i dont think im going to have to beacause this thing pounds and hits the lows great !!!! im getting door flex and i can roll 1 window down put a hat in the window and she shakes pretty good cant wait for my bc2000 so i can push 1200+ rms finaly there only getting about 800rms right now if that

first time building box first time home made aero port lol first time working with mdf all i have to say is i have mad respect for the pople who can do this and make it look good lol im doing my best will post pics when done with the box size i have i might have to do up fireing subs i dont think 27" wide is going to be enough becuase thats outside mesurment the sa-12 takes up 12.5 maybe i can stager them idk

ok thanks everyone !! wish me luck im going to need it lol

ok thanks now for the final question how are you guys securing the aero ports ?? tight fit with glue ? drill hole through flair and screw down

so what am i looking at with my current configuration ?? would be like 31-32hz right? becuase now im lost lol what do i need to size wise to get my 4.5 cubes and 30hz ? my max dimensions are in first post btw

so i would be looking at roughly 4.24 cubes

where do you get 3.5 cube ? im looking at 4.5 also does port displacement effect tuning ? do you calculate port size before or after port displacement and what is 3 4" 22" long aeros going to displace ?