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7ender
06-09-2009, 11:22 PM
I was searching around when I saw this setup by mlstrass. Hope you don't mine me reposting your pictures!

http://i156.photobucket.com/albums/t18/7ender97/0000276kw8.jpg
http://i156.photobucket.com/albums/t18/7ender97/1001614eq1.jpg


I don't know what you call this, I know it's not actually a "trunk wall" lol.
Anyways, as you can see it essentially just seals the subs from the rest of the trunk. Seems like a really good idea, what do you guys think of this? I've never seen it until now (maybe i'm missing something, I dont' usually stray far beyond regular sub back/port back rectangular boxes :p).

I was planning on simply doing another 4cube box for my next box, but looking at mlstrass's build that looks easy enough to do. Any idea on how it might sound (besides obviously trying it out for myself)? Looks like I might have problems if I have passengers though and need the seats up...Doesnt' look like the port would have much breathing room.

Thanks!

soundstreamer
06-09-2009, 11:26 PM
The loudest trunk cars I've seen have all been forward facing and sealed.

One Bad MOFO
06-09-2009, 11:27 PM
pm him and ask?

7ender
06-09-2009, 11:32 PM
Yeah, I did pm him already.

I'm kind of just curious as to why I haven't seen this done before- it seems so simple to build and looks like it'll eliminate alot of the problems of a trunk car.

One Bad MOFO
06-09-2009, 11:36 PM
thorshammer1 did it too
http://i266.photobucket.com/albums/ii249/swoolcot/HPIM1402.jpg

KyleBechtold
06-09-2009, 11:37 PM
i am currently finishing mine same exact car he has.. he helped me out a good amount.. i am doing an 18 though.. barely ****ing fit without deleting the rear deck

basshedz06
06-10-2009, 07:48 AM
some cars are loud firing forward an most are not it just depends on what the owner wants in this case you. i know a guy over in usaci org that has a jetta with 4 10's doing mid 50's on a burp an prolly low on music. an his box is subs up port back. so i mean it just takes time.
but i just started doing my box firing forward an its louder by ear to me.

fshanda
06-10-2009, 08:07 AM
Heres the box I just finished for my Son's car. We just finished sealing off the box around the top and sides with rigid closed cell foam. Still need to close off the old speaker holes in the rear deck. Sealing it off stopped all the trunk rattles. Haven't had it metered yet so no idea what the numbers are.

The only audible noise from the car now is the buzzing from the rear view mirror.

It gets pretty loud for 1200 watts, still want to get a new sub sometime soon so we can get the most out of the amp. Still have another 1000 watts waiting to be used, just need something D1 or D4.

The box is 4 cubes and if he has a passenger in the rear just leaves one seat down. 2 passengers, just takes it easy on the bass until he drops em off.

http://farm4.static.flickr.com/3339/3521772386_93441affc3_o.jpg

SPLaudio
06-10-2009, 08:11 AM
mojo box looks good!

Crzy
06-10-2009, 08:29 AM
just make sure it is all sealed i noticed mine got a little bit louder once properly sealed


current setup
http://img.photobucket.com/albums/v489/crzysvgusr/Picture072-1.jpg

old setup
http://img.photobucket.com/albums/v489/crzysvgusr/yayocomputerpictures139.jpg

7ender
06-10-2009, 08:49 AM
Wow thanks for all these pictures! Some of them look really nice...trying to figure out what exactly i'm going to do based on these.

For those that have done it- How exactly does it perform? What I really want to know- how much difference is there between say having your box simply facing forward vs. having it sealed to the cabin?

fshanda
06-10-2009, 11:34 AM
Without it sealed around the sides the trunk rattled, with it sealed no rattles. I couldn't tell a difference between sealed / not sealed as far as how it performs. It just pounds the hell out of the car. Sounds great too. Tuned it to 38-40 hz but still gets plenty low.

TurdFergueson2
06-10-2009, 11:43 AM
I was searching around when I saw this setup by mlstrass. Hope you don't mine me reposting your pictures!

http://i156.photobucket.com/albums/t18/7ender97/0000276kw8.jpg
http://i156.photobucket.com/albums/t18/7ender97/1001614eq1.jpg


I don't know what you call this, I know it's not actually a "trunk wall" lol.
Anyways, as you can see it essentially just seals the subs from the rest of the trunk. Seems like a really good idea, what do you guys think of this? I've never seen it until now (maybe i'm missing something, I dont' usually stray far beyond regular sub back/port back rectangular boxes :p).

I was planning on simply doing another 4cube box for my next box, but looking at mlstrass's build that looks easy enough to do. Any idea on how it might sound (besides obviously trying it out for myself)? Looks like I might have problems if I have passengers though and need the seats up...Doesnt' look like the port would have much breathing room.

Thanks!

I was about to say that looked very familiar....... Heard that setup a few times. Now he's doubled the power and subs.
I'd PM him. He's pretty active on here. He can tell you better than anyone about it.

jco1385
06-10-2009, 11:52 AM
i have something similar. is this a "wall" because it's sealed from the trunk? or just a box facing the cabin?

PioneerSPL1990
06-10-2009, 11:55 AM
thorshammer1 did it too
http://i266.photobucket.com/albums/ii249/swoolcot/HPIM1402.jpg

Im in TNESPL with rob and his best to date i beleive is a 151 with that setup.

SPLaudio
06-10-2009, 01:08 PM
why do acouple of you guys have the port on the passengers side?

TurdFergueson2
06-10-2009, 01:28 PM
why do acouple of you guys have the port on the passengers side?

So the chicks can do hair tricks.

I always whought it was because the meter would be placed on that side.

thorshammer1
06-10-2009, 01:38 PM
Corey i think it may help read better for the different mic positions in other orgs.

For DBDrag style metering port on drivers side seems to work best.

OP The biggest key to building a forward firing setup is making sure to COMPLETELY Seal the box, top, sides, rear deck etc... If you don't it will lose output.

Look for Peas247 he also did a forward firing setup thats just down right nasty!

Ian is correct on my best to date being a 151.0 in the lanes sealed at the dash @ 40hz.

schrummy
06-10-2009, 01:47 PM
^^^^^^^^^^^with 10s^^^^^^^^^^^^^

michaellane
06-10-2009, 01:48 PM
i wish i had a sealed trunk :(....i dont think i can ft my 4 tens.....can your box be back a little or does it have to be flush with the openeing?

subzero
06-10-2009, 01:57 PM
So does this sound better than port side subs face rear? I have mine about 3 inches from rear wall. The seats fold down but I leave them up.

thorshammer1
06-10-2009, 02:52 PM
^^^^^^^^^^^with 10s^^^^^^^^^^^^^

Yeppers!:D


i wish i had a sealed trunk :(....i dont think i can ft my 4 tens.....can your box be back a little or does it have to be flush with the openeing?

I have mine pushed as far back as possible, which for my car is loudest, then I added sides and a top attatched to the face of the box to seal behind b-pillar.


So does this sound better than port side subs face rear? I have mine about 3 inches from rear wall. The seats fold down but I leave them up.

I've never done a setup with port to the side but with subs facing the rear I lost 2db on an average with 4 different boxes. I must say again this is for my car(06 GP) things may be different in other vehicles.;)

subzero
06-10-2009, 03:01 PM
I was trying to save space by putting port on the side. What about cone noise. I have a loose spider inside, I been to lazy to fix, but thats one reason I havent moved the box around. is 2 bd's really going to make a listening difference? I am more interested in Music, with loud bass. All accurate, clean and clear
Sorry if seem to thread jack, just interested in the comparison to the wall your disscussing.


http://i703.photobucket.com/albums/ww35/brianncns/car/IMG00276-1.jpg
http://i703.photobucket.com/albums/ww35/brianncns/car/35hz4cubes.jpg
http://i703.photobucket.com/albums/ww35/brianncns/car/35hzwith4cubes.jpg
http://i703.photobucket.com/albums/ww35/brianncns/car/soundstream.jpg

WildSebring
06-10-2009, 03:08 PM
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/IMGP0162.jpg
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/IMGP0166.jpg
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/IMGP0122.jpg
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/pic4.jpg
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/mine1.jpg
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/mine.jpg


Both of those were completely sealed off from the trunk, expanding foam shot in every hole.
That SPL-X 12" Quad 1 with 2 1500D's @ 1 ohm a piece, did 151.3 @ 50hz. It had more in it, but I got tired of the burping one note wonders and I build 28hz ground pounders now, lol..

But it worked...

Oh and heres a real wall..:fyi: :D
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/dc_install_005.jpg
http://i267.photobucket.com/albums/ii318/big_hawk_dsr/dc_install_010.jpg


Ahh, the good times...

7ender
06-13-2009, 07:37 AM
Well, I tested it out today with my Q that's in my car right now.

I just got home from college today to see my car again :). Turned the box around facing into the cabin, and I lost ALOT of output. Guess it's just the nature of my car.

So I guess I won't be doing this "trunk wall". It looked really good too :(.

Thanks for all the responses, some of them look extremely nice.

PioneerSPL1990
06-13-2009, 09:38 AM
have youi tried firing the box left and right sometimes up with the rear deck speakers out will gain you output.