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View Full Version : 149.9 bassracer box help?!?!?



SPLluminator
09-03-2009, 09:22 AM
Now im deciding on enclosures. Im going to be running 4 sonance v.2 15's in a wall in a cutlass supreme(newer body style). I was leaning toward 14 cubes @ 30hz, around 150" port space. Or idk anything about bandpasses so maybe someone could chime in on them. My main concern is to be able to do a 149.9 bassrace. Id like it to have a FAIRLY flat response up to around 75hz down to around 30hz. Steve said he did it with a 3.5cft box tuned to 30hz. Any other suggestions on enclosures?

basscort2009
09-03-2009, 09:24 AM
might need a little higher tuning than 30 htz. and alos 150 sq inches of port?!?! thats only like 10.xx inches per cube. u want like 15 or so. try about 210 sq inches of port

Team WP Bill
09-03-2009, 09:28 AM
I ran bass race 2 years ago in a Buick Regal in the 49.9 class I burped a 155.5. I had 4 15's 2 MM4000.1's in a 22cf wall with 309sq inches of port. Port was in the center and the 15's on the sides. I played from 36-63hz flat withing 3db. If you want some help pm me.

http://i87.photobucket.com/albums/k134/bwcad1/buick%20build/IMG_3014.jpg

SPLluminator
09-03-2009, 09:29 AM
might need a little higher tuning than 30 htz. and alos 150 sq inches of port?!?! thats only like 10.xx inches per cube. u want like 15 or so. try about 210 sq inches of port

Thats what steve recommended. I said the same thing too. Maybe ill do more. See what others have to say.

SPLluminator
09-03-2009, 09:31 AM
I ran bass race 2 years ago in a Buick Regal in the 49.9 class I burped a 155.5. I had 4 15's 2 MM4000.1's in a 22cf wall with 309sq inches of port. Port was in the center and the 15's on the sides. I played from 36-63hz flat withing 3db. If you want some help pm me.

http://i87.photobucket.com/albums/k134/bwcad1/buick%20build/IMG_3014.jpg

Thats pretty dang good. I used to be just a burper but i never got good numbers out of a trunk and it always left me wanting more. So im just gonna go for sounding good, loud, and low lol. Pmed

mlstrass
09-03-2009, 09:39 AM
Steve recommends small ports for those subs and the alphas, not sure why. I'm doing 4 18's in a wall and same thing, 9-10^2 per cube. I'll know sometime next week just how that works out when I get the guys' car done and he can meter it.

DDbump had 4 of the alpha 12's in a wall and was right around a 150, so he really had to push it to do the 49.9 class. Having 15's should help...

SPLluminator
09-03-2009, 09:41 AM
Steve recommends small ports for those subs and the alphas, not sure why. I'm doing 4 18's in a wall and same thing, 9-10^2 per cube. I'll know sometime next week just how that works out when I get the guys' car done and he can meter it.

DDbump had 4 of the alpha 12's in a wall and was right around a 150, so he really had to push it to do the 49.9 class. Having 15's should help...

Yea, idk that im completely convinced on the small port idea tho. I really think ill do at min. 12in per. Another issue is if i tune at 30hz, the port is gonna be long as fawk with more port space.

mlstrass
09-03-2009, 09:43 AM
Yea, idk that im completely convinced on the small port idea tho. I really think ill do at min. 12in per. Another issue is if i tune at 30hz, the port is gonna be long as fawk with more port space.

Only thing I really don't like is if you ever decide to change subs the enclosure is pretty much worthless with so little port area.

I'm building this one per Steve's recommendations, so I'll know late next week.

Unless you want to go first and be the guinea pig :D

SPLluminator
09-03-2009, 09:59 AM
Only thing I really don't like is if you ever decide to change subs the enclosure is pretty much worthless with so little port area.

I'm building this one per Steve's recommendations, so I'll know late next week.

Unless you want to go first and be the guinea pig :D

Nah. Dont have the subs yet. Or the car lol. Getting the car thurs. Getting the subs within a week or two.

skmfkr
09-03-2009, 11:19 AM
i would tune to 35hz and 200 square inches of port. either way if u cant bass race a 49.9 with 4 15s in a wall u should probly just retire lol

anj46907
09-03-2009, 11:23 AM
i would tune to 35hz and 200 square inches of port. either way if u cant bass race a 49.9 with 4 15s in a wall u should probly just retire lol
wise words mista miyagi

skmfkr = the miyagi of car audio

thegreatestpenn
09-03-2009, 11:29 AM
Thats pretty dang good. I used to be just a burper but i never got good numbers out of a trunk and it always left me wanting more. So im just gonna go for sounding good, loud, and low lol. Pmed

don't give up on getting a trunk loud!!!! it is hard, but if you keep at it you can do it! I was the same way about my civic, couldn't get over 140 at the headrest for 2 years. Now that I've broken that barrier 150 is in my site. You just have to put the time in.

SPLluminator
09-03-2009, 07:16 PM
i would tune to 35hz and 200 square inches of port. either way if u cant bass race a 49.9 with 4 15s in a wall u should probly just retire lol

Lol im thinking the same thing(about the retiring lol). I just really love the lows so i wanted to tune really low. Im not 100% on the tuning. But i just wanna make sure i can play decafs **** without killing the subs lol.

skmfkr
09-03-2009, 07:27 PM
it shouldnt be a prob my box is tuned to 37hz and could play the 27hz note in put on just fine. now with my epicenter hooked up it has a 33hz SSF and i can play this one song thats slowed and its 26hz. but i said 35hz cuz i dont really care much for tuning any lower

SPLluminator
09-03-2009, 07:28 PM
it shouldnt be a prob my box is tuned to 37hz and could play the 27hz note in put on just fine. now with my epicenter hooked up it has a 33hz SSF and i can play this one song thats slowed and its 26hz. but i said 35hz cuz i dont really care much for tuning any lower

Maybe since your the "the miyagi of car audio" ill tune to 35hz. Itll seem really low anyways cuz the lowest ive ever tuned a box was 40hz lol.

SPLluminator
09-04-2009, 05:53 PM
Anyone here ever run sonances? How do you think 4 of them will do off a 3250.1?

skmfkr
09-04-2009, 10:37 PM
well like i said i can do a 148.3 with my 2 15s and 3250 i dont see why 4 15s in a wall couldnt do it.

SPLluminator
09-04-2009, 10:41 PM
well like i said i can do a 148.3 with my 2 15s and 3250 i dont see why 4 15s in a wall couldnt do it.

O i dont doubt it. I just dont know how low to tune. And if sonances will do ok tuned higher or not.

skmfkr
09-04-2009, 10:43 PM
i think tuning is more of a personal pref than anything

SPLluminator
09-04-2009, 11:42 PM
i think tuning is more of a personal pref than anything

Well if you tune higher it typically is louder. So i just wanna find the middle of loudness on the meter and daily ground pounder.

GearGuy2001
09-05-2009, 08:27 AM
Well if you tune higher it typically is louder. So i just wanna find the middle of loudness on the meter and daily ground pounder.

I had my old 10s tuned to 33 and my new RD Alphamax's at 34. Didn't get much of a chance to play with the alpha's since my cactus imploded but it sounded pretty good daily for not being fully broken in. Didn't quite throw up the numbers I hoped but I only had 1 battery (spv70) and they weren't broken in, plus trunk car ftl

SPLluminator
09-05-2009, 09:38 AM
I had my old 10s tuned to 33 and my new RD Alphamax's at 34. Didn't get much of a chance to play with the alpha's since my cactus imploded but it sounded pretty good daily for not being fully broken in. Didn't quite throw up the numbers I hoped but I only had 1 battery (spv70) and they weren't broken in, plus trunk car ftl

I want to tune to 30 but itll take soo much box space up if i give it the right amount of port area. So maybe 34-36. I tuned my alpha v.2 to 36 and it played a fairly flat response and got pretty loud out of a trunk.

GearGuy2001
09-05-2009, 10:41 AM
I want to tune to 30 but itll take soo much box space up if i give it the right amount of port area. So maybe 34-36. I tuned my alpha v.2 to 36 and it played a fairly flat response and got pretty loud out of a trunk.

What about using Aero Ports, You could do 30hz and only need 9-10 sq inches/cube vs Slot being 14+ sq inches/cube

its_ray_ray
09-05-2009, 11:00 AM
Anyone here ever run sonances? How do you think 4 of them will do off a 3250.1?

**** good. 142.3 headrest in my volvo. loved that ****. they were 2 12's 3.5^3 35hz. real **** nice too. i got it from Dre_Atl on here. beefy subs

SPLluminator
09-05-2009, 07:07 PM
**** good. 142.3 headrest in my volvo. loved that ****. they were 2 12's 3.5^3 35hz. real **** nice too. i got it from Dre_Atl on here. beefy subs

Pretty decent headrest score there for in a trunk. Well i can always sell em if i dont like them right?:D.

SPLluminator
09-07-2009, 12:19 AM
Looks like the plan is 14 cubes @ 36 hz with around 170 sq. in. of port.

basshedz06
09-07-2009, 08:35 AM
i use to be the same way about trunk cars man the loudest i got mine is a 143.9 an that was last month, my goal is 150 an i know i can do it cause i know this altima has more in it. the alpha's don't need alot of port area but throwing some at it does help, i will say go with what steve said but i see you have your mind set, cause i get most of my info from kenny an he helps me design my boxes but most of the time he just tells me to throw a box in the trunk start off with 2 aeros an work you way up, basically tune in car, haven't done it yet but i will be soon .

skmfkr
09-07-2009, 08:53 AM
i would do more port area. my box for my 2 15s is 7.3 and 135 square inches tuned to 37hz

SPLluminator
09-07-2009, 12:08 PM
Steve is really persistent on the low port space. Idk why. But what i posted above is a lil above what he recommended lol. So idk what to do. Ik hes running the exact subs im getting from him in his tahoe and hes doing a 153-154 NW. But im not sure how much power he is running.

mlstrass
09-07-2009, 02:51 PM
i use to be the same way about trunk cars man the loudest i got mine is a 143.9 an that was last month, my goal is 150 an i know i can do it cause i know this altima has more in it. the alpha's don't need alot of port area but throwing some at it does help, i will say go with what steve said but i see you have your mind set, cause i get most of my info from kenny an he helps me design my boxes but most of the time he just tells me to throw a box in the trunk start off with 2 aeros an work you way up, basically tune in car, haven't done it yet but i will be soon .

Did a 149@34Hz out of the trunk of my Altima at the headrest since it was MECA style metering. Needed to tune higher to get that 50 as box peaked too low...

Guy on DOA with 4 12" alpha's in a wall off a 5750 does right around a 150 and bass races 49.9 class. Your cone area should help make up for the power diff, so it seems very possible...

mlstrass
09-07-2009, 02:52 PM
Doing a wall later this week with 4 18" alpha's, so 149.9 bass race shouldn't be a problem...:D

SPLluminator
09-07-2009, 02:57 PM
Doing a wall later this week with 4 18" alpha's, so 149.9 bass race shouldn't be a problem...:D

I would hope not. lol. Im not real worried about being able to bass race the 149.9, i just wanna make sure it sounds great in the meantime.