I gots a problem!!

 

Silver Member
Username: Oglejust

15in re sx, Il Us

Post Number: 413
Registered: Aug-06
i got a call today from the guy wit the loudest system in town... or so he says. well he was talkin sh*t and it pissed me off so now i got to make sure i beat him in the next comp. hes got 2 15in mtx 7500's in sealed boxes. i dont know exacty how big of amp he has but its prolly no more than 1500. well i have a 15in re sx and an ed nine.1 to work with and im gonna build an spl box. i need to get my sx as loud as possible with this amp and the sub. for an spl box im thinkin 4 cubes after dis., resined, braced, and tuned high. any suggestions on tuning? im thinkin 40 to 45hz?
 

Platinum Member
Username: Rovin

Trinidad & T...

Post Number: 10014
Registered: Jul-05
there is kevin & canaan on this forum who will solve ur problems since they both have alot of experience with ur sub ....
 

Gold Member
Username: Southernrebel

Monroe, Louisiana DD 9515d~~]...

Post Number: 3905
Registered: Mar-04
what vehicle do you have?

if he has those 7500's in sealed boxes...you can smoke his @$$
 

Silver Member
Username: Oglejust

15in re sx, Il Us

Post Number: 414
Registered: Aug-06
i have a 96 chrysler concord. w/ a stock alt and a regular batt but i do have the big 3 done. i have some major voltage drop... from 14.4 to 12.6. :-(
 

Gold Member
Username: Bestmankind

Fi AudioBTL

Post Number: 7428
Registered: Oct-05
you still got him beat. mtx sux man. they are in sealed to.
 

Silver Member
Username: Jblanford

Post Number: 107
Registered: Oct-06
Well the kid with the 7500's say's he hit 154.sumthin...lol
 

Gold Member
Username: Redliner

Wilmington, Ma

Post Number: 3170
Registered: Jun-05
hey hey hey guys dont make fun of the 7500's they def get loud. but he prob onyl has about 1krms going to them. i own 2 of them and my dd 9500 smoked them though so u should b able to win.but its not like a piece of cake like there making it seem
 

Gold Member
Username: Bestmankind

Fi AudioBTL

Post Number: 7432
Registered: Oct-05
i only say that cause justin seems like he knows what he is doing when it comes to building a nice box for his sx.
 

Gold Member
Username: Frkkevin

Resonant Engineering..., Fort Worth... Email

Post Number: 1782
Registered: Nov-05
no way he did 150s with sealed 7500s.. honestly I see him maybe doing 144-145 with that setup

if you are interested i'll sell you a box i built for my RE SX 15.. canaan designed it with me. its resined inside as well and coated with a ruber coating on the outside. tuned to 45hz .. or maybe it was 42hz.. lmfao idk... hit me up on AIM
 

Silver Member
Username: Oglejust

15in re sx, Il Us

Post Number: 415
Registered: Aug-06
kevin.. i dont have aim but i have msn... and thanks chad :-)
 

Silver Member
Username: Oglejust

15in re sx, Il Us

Post Number: 416
Registered: Aug-06
i pm'd u kevin.
 

Gold Member
Username: Southernrebel

Monroe, Louisiana DD 9515d~~]...

Post Number: 3906
Registered: Mar-04
Mtx subs are actually pretty nice...the 7500 and 8500's at least, over priced though.

I did a box w/ interchangble ports for a dual 4ohm 8500 15" alil while back and put it on a MTX amp rated for 800wrms @ 2ohm. We did 145.0dB @50hz w/ that box.


Justin,
the only way that guy did 154dB is if it was on a miscalibrated AC180 mic. I would actually say 143ish is what those 2 15's sealed would do on Termlab.

Depending on what frequency youre car likes, ~4cuft tuned to ~45hz would be a good place to start.
 

Gold Member
Username: Southernrebel

Monroe, Louisiana DD 9515d~~]...

Post Number: 3907
Registered: Mar-04
BTW...

the guy that is saying he has the loudest system in town prolly thinks that because his sh1t rattles the most :-)
 

Gold Member
Username: Frkkevin

Resonant Engineering..., Fort Worth... Email

Post Number: 1783
Registered: Nov-05
These are the specs I get when I run it through BBP6.. given it is a slot port acts longer than it is it should be really close to 45hz .. Be honest I would could prolly do $100 shipped if shipping is not too much. this is just taking up space.. I layer of glass resin.. only thing it needs is a terminal cup where that hole is..

Type: Vented Box
Shape: Prism, square
Vb = 3.96 cu.ft
Fb = 47.11 Hz
Fill = none
No. of Vents = 1
Vent shape = rectangle
Vent ends = one flush
Hv = 14.5 in
Wv = 4 in
Lv = 13 in

Upload
Upload
Upload
Upload
 

Gold Member
Username: Frkkevin

Resonant Engineering..., Fort Worth... Email

Post Number: 1799
Registered: Nov-05
bump for jusin..
 

Gold Member
Username: Frkkevin

Resonant Engineering..., Fort Worth... Email

Post Number: 1802
Registered: Nov-05
well it didn't bump..
 

Gold Member
Username: Redliner

Wilmington, Ma

Post Number: 3225
Registered: Jun-05
nice looking box kev
 

Gold Member
Username: Frkkevin

Resonant Engineering..., Fort Worth... Email

Post Number: 1810
Registered: Nov-05
bump again for justin
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