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02MUSTANG GT
05-28-2008, 05:49 PM
I just built a box for my 02 Mustang GT and the vibrations are there but the sound isnt. I am thinking the subs may sound better facing towards the trunk? I have never done a box for a coupe, only hatchbacks, so sound direction has never been a problem. Will the bass sound better if I face it backwards, or is there a bandpass type box or better I am missing?

Thanks for any suggestions!


Edited to add: Alright, I tried the wiring suggestions, and it made no difference. But, what I did figure out is that the bass DOUBLED when I opened the trunk. Thus, I assume the problem is the bass cancellation I read about in another thread.

So, do I turn the box around, or do I do I remove the Mach 460 rack from under the rear deck leaving only a rear deck frame, add baffles and trim pieces for the 5X7's and fire the woofers straight up into the back window. Either would be relatively easy, but the straight up version would allow me to use my current flush mount set-up in the trunk. I can just remove the front piece of the box and replace with a solid piece and then cut new holes in the top of the box.

What do you guys think?

Edit #2 i turned the box around to face the back of the trunk and it SLAMS. Love it. Need to build a new box now though so it looks better. This will do for a few weeks. Thanks for all your help!

Heres the current set-up.

Yes I know the subs are underpowered. LOL

http://i176.photobucket.com/albums/w161/PantherArms/davesbox029.jpg

http://i176.photobucket.com/albums/w161/PantherArms/davesbox025.jpg

60ndown
05-28-2008, 05:54 PM
three 10s should be plenty loud if you got 400 watts or more?

you sure theyre wired correctly?

in phase?

02MUSTANG GT
05-28-2008, 05:58 PM
three 10s should be plenty loud if you got 400 watts or more?

you sure theyre wired correctly?

in phase?


The bass sound is there, but not like it has been in the past when fired off a hatchback window or the like. It's like I can feel the bass, but not hear it like I have in previous installs.

The voice coils are wired in series and paralleled at the amp. Each sub has it's own sealed enclosure.

60ndown
05-28-2008, 06:12 PM
disconnect 2 subs

play 1 sub with music,

connect sub number 2 more bass yes or no. ?

if yes connect sub number 3 ..more bass yes or no?

if there is less bass when you connect subs 2 or 3 your wireing is wrong.

Crzy
05-28-2008, 06:14 PM
this is the same thing i am fearing with a front facing setup. that box looks sealed correct? hope i do not run into the same problems with a ported enclosure

sorry i cant help but ive read a lot where people say that this setup may or may not work.

Supergumby5000
05-28-2008, 06:15 PM
disconnect 2 subs

play 1 sub with music,

connect sub number 2 more bass yes or no. ?

if yes connect sub number 3 ..more bass yes or no?

if there is less bass when you connect subs 2 or 3 your wireing is wrong.

:word:

also, that looks like a sealed box. with that said, in a sealed box output will improve with the subs facing backwards.

Crzy
05-28-2008, 06:21 PM
:word:

also, that looks like a sealed box. with that said, in a sealed box output will improve with the subs facing backwards.

it looks like in ur avatar u have a front firing setup also, i see urs is ported how do you like it? does it sound different then a rear facing setup? more/less spl and overall sound quality?

sorry for the hijak might help out op though :veryhapp:

Supergumby5000
05-28-2008, 06:23 PM
it looks like in ur avatar u have a front firing setup also, i see urs is ported how do you like it? does it sound different then a rear facing setup? more/less spl and overall sound quality?

sorry for the hijak might help out op though :veryhapp:

I love it ported, but this is coming from a guy who loves loud setups.

That, and the setup you see in my avatar is in the bed of a truck firing into a cabin. I cant fire the subs any other way ;)

Crzy
05-28-2008, 06:26 PM
I love it ported, but this is coming from a guy who loves loud setups.

That, and the setup you see in my avatar is in the bed of a truck firing into a cabin. I cant fire the subs any other way ;)

true, im just hoping that my new setup fo front firing will be louder or at least the same as my old setup of rear firing in the same box same subs same everything.

Supergumby5000
05-28-2008, 06:27 PM
if you want to front fire, port it. The output will increase (and you will lose all of your trunk space)

if you wanna stay sealed, i'de reccomend rearfiring.

Supergumby5000
05-28-2008, 06:27 PM
also, double check your wiring befor eyou get too gung-ho here

02MUSTANG GT
05-28-2008, 06:53 PM
Thanks fellas! I'll check the wiring later this evening! If that doesnt work, I'll try to turn the box around.

If I was to rebuild the box, is there a better design? I should checked here before I built I guess.:confused:

Crzy
05-28-2008, 06:56 PM
try ported for more output? supergumby also suggested the same thing

Crzy
05-28-2008, 08:07 PM
i moved my box from rear firing to front in my current car not the car im building a baffle for and with my 3.5 cube box at 32 hertz it seemed much louder to me. i dont have a meter so i cant say the gain but by ear it seamed to get louder with less power. the lows did not seem as loud though, i dont know the frequency of the song but the low bass you can barely hear just feel.

02MUSTANG GT
05-29-2008, 02:04 PM
The more I read online, I'm thinking it may be a wiring problem. If that doesnt work, I'm gonna flip the box around and try it facing towards the trunk.

Another thought I had was possibly replacing the front piece of the box and making trim plates for the 5X7's in the rear deck (w/baffles) and recutting the sub mount holes in the top of the box. That way there would be nothing blocking the woofers and they would be firing off the back glass. Any comments on that?

02MUSTANG GT
05-29-2008, 09:12 PM
Bump for update.:confused:

crx4luke
05-29-2008, 09:25 PM
Sounds like you're getting cancellation. If the output is there when you open the trunk then it doesn't sound like its a wiring issue. With that said it sounds more like the passenger compartment isn't completely sealed off from the trunk.

You need to try to seal up the rear deck, and make sure that the front of the box is completely sealed from the trunk. It would probably help to seal up the rear deck if you got rid of the mach box. Then you could seal the deck up and mount the 5x7s from the top. Then you'll probably want to take the back part of the back seat out and seal up behind there. That will help to get rid of the sound waves moving into the trunk.

vasilios
05-29-2008, 09:47 PM
In most experiences, including mine, you will gain lower end extension and output when the mounted drivers are facing the trunk opening of the car, or rear.

In order for bass waves to be enhanced, they need surfaces to bounce off of, the more the merrier.

02MUSTANG GT
05-29-2008, 09:56 PM
In most experiences, including mine, you will gain lower end extension and output when the mounted drivers are facing the trunk opening of the car, or rear.

In order for bass waves to be enhanced, they need surfaces to bounce off of, the more the merrier.

So in your opinion, face them back or towards the window? I thought maybe it would be hatchback-ish to fire them off the window.

crx4luke
05-29-2008, 10:05 PM
If you're going to fire them up through the rear deck(toward the window) you'd need to make sure that the sound waves are going directly into the holes in the rear deck. THe easy way would be to turn the subs towards the back (but, that's going to increase the chances of rattles. Those mustangs are rattle cans when it comes to bass. I did a lot of dynamat on one with a single MTX 9500 10" in a ported box, running off an mtx TE1501D and there was barely any rattling. I also took out the mach box like i mentioned before. Sounded good, but you'd have to rebuild everything to do that.

I'd try to see if you can get the front sealed from the back first. It'll take some work, but at least you won't have to rebuild your box, or your amp rack.

02MUSTANG GT
05-30-2008, 07:24 PM
Bump for second update.:veryhapp: