Twisted's 3rd Row Wall Build

Hiya......doing a new build here...we got started today.....got most of the supplies except a few little things here and there....but all will be here within the next week. This is a Daily Driving Ground Pounder build....or DDGP for short......using my 2 DD 3518's on 2 Sundown 2K's @ .75ohm a piece(will switching to a Crescendo 5K soon though) using Focal 165 A1 Mids and DD T series tweets (which i'll run on my SD 4-channel for now) Also using Knu Karma Rca's and Monster Cable 1/0 ...still not sure on batts. I'm editing a vid now...we just bought the Birch today....ran some RCA's and switched a deck out. Tomorrow we are going to Termlab 1 DD on around 2K to kinda get a idea of where we are at.

Now here's the interesting part...i can't decide on what kind of enclosure to do.....a 4th order....or a standard 3rd row wall...port up up top.....i want you guys to decide! So let's hear it! For now on to the pics and vids!

Here's the vehicle


Here's some Rca's

Here's some wire




Here's my Birch

Getting a good idea of room


6 cubes @ 31hz.....lets see if this thing is a # machine!

These mah mids

i would stick with regualar wall man, once you start playing with bandpasses man you will pull your hair out dude, my buddy did one in his durango an i hated every minute of it

Banpass are simple you just have to have a lot of room

would stick with regualar wall man, once you start playing with bandpasses man you will pull your hair out dude, my buddy did one in his durango an i hated every minute of it[/quote]

supadave wrote:

i would stick with regualar wall man, once you start playing with bandpasses man you will pull your hair out dude, my buddy did one in his durango an i hated every minute of it

Yeah i'm still debating....

Regular flat walls are typically louder, and Idk if you would have enough room for a 4th order wall.

Aight folks...lil more progress today....we also did a lil testing .....we got a 136.1 on roughly 150 watts! (In the vid coming up i say 250 watts but ended up we had 2.7 ohm starting load) then we tried about 700-800 watts and got a 141.7 @ around 39 hz......upper 130's @ 23hz....not bad testing with just 1 18" and SMALL power non-walled.....anyway here's some pics..




Gained going sub up ...port up

Little dry fit before sanding

Standard box over a 3rd row wall

Skip01 wrote:

Standard box over a 3rd row wall

To accommodate airspace there is no other option.....box that was in there was 6 cubes ....think about it

twistedchild420 wrote:

Skip01 wrote:

Standard box over a 3rd row wall

To accommodate airspace there is no other option.....box that was in there was 6 cubes ....think about it

Well ya if ur stuck on using 18s haha, step it up too 4 12s in that same size box and do 155s all day

you are going to burn your subs trying to build a 4th order in that small of airspace.just wondering who told you that it would work.

TAMU wrote:

you are going to burn your subs trying to build a 4th order in that small of airspace.just wondering who told you that it would work.

I have pretty much decided against it....but....how would 16 cubes not be enough?

Skip01 wrote:

twistedchild420 wrote:

Skip01 wrote:

Standard box over a 3rd row wall

To accommodate airspace there is no other option.....box that was in there was 6 cubes ....think about it

Well ya if ur stuck on using 18s haha, step it up too 4 12s in that same size box and do 155s all day

Gimme the dough and i will! lol But i'm happy with my DD's

twistedchild420 wrote:

Skip01 wrote:

twistedchild420 wrote:

Skip01 wrote:

Standard box over a 3rd row wall

To accommodate airspace there is no other option.....box that was in there was 6 cubes ....think about it

Well ya if ur stuck on using 18s haha, step it up too 4 12s in that same size box and do 155s all day

Gimme the dough and i will! lol But i'm happy with my DD's

haha i hear ya.

I wanna hear this at Finals if u make it, make me a believer out of 3rd row walls

Skip01 wrote:

twistedchild420 wrote:

Skip01 wrote:

twistedchild420 wrote:

Skip01 wrote:

Standard box over a 3rd row wall

To accommodate airspace there is no other option.....box that was in there was 6 cubes ....think about it

Well ya if ur stuck on using 18s haha, step it up too 4 12s in that same size box and do 155s all day

Gimme the dough and i will! lol But i'm happy with my DD's

haha i hear ya.

I wanna hear this at Finals if u make it, make me a believer out of 3rd row walls

Will be there and will do! lol I had to try something different .....not many 3rd row walls out there!

New vid here.....anyone wanna see a preview of 20 Sundown SA-15's ?

https://www.youtube.com/watch?v=OaT6XF83vXA

twistedchild420 wrote:

TAMU wrote:

you are going to burn your subs trying to build a 4th order in that small of airspace.just wondering who told you that it would work.

I have pretty much decided against it....but....how would 16 cubes not be enough?

the front sealed part needs to be atleast 12 cubes minmum after bracing and woofer displacment,now that leaves you 2 cubes for the loading chamberno workie get the picture with those 18's you would have compression issues from hell and blown subs.

TAMU wrote:

twistedchild420 wrote:

TAMU wrote:

you are going to burn your subs trying to build a 4th order in that small of airspace.just wondering who told you that it would work.

I have pretty much decided against it....but....how would 16 cubes not be enough?

the front sealed part needs to be atleast 12 cubes minmum after bracing and woofer displacment,now that leaves you 2 cubes for the loading chamberno workie get the picture with those 18's you would have compression issues from hell and blown subs.

I hear what your saying.....but i honestly don't see how 5^ft sealed and around 9^ft(or as close as i could get) ported at 45hz in a 4th order wouldn't make me happy?

TAMU..... has it backward you can do 2 cubes in the sealed chamber and 6 ported per sub should be fine.

johnperdeye wrote:

TAMU..... has it backward you can do 2 cubes in the sealed chamber and 6 ported per sub should be fine.

2 cubes for 2 18's i dont think so.bandpasses with small sealed chambers are for spl tone burst and very careful tone burst at that.
those 18's wouldnt last 3 minutes in 2 cubes sealed on music.

ive only doen 1 3rd row wall . in a trail blazer. 2 mt 18s and 2 memphis 4ks... was less than impressive. had much better luck with a up fire ported box. thats a smaller suv so it might not suck. but i just wouldnt do it .. but it looks like its too late lol

*jumps on the pile*

I've tried some crazy box designs in the RAV, and the best results always come when the port is firing off the rear windshield or on the back door... 4-6" off the surface. It projects to the front, without getting too tripped up by the soft seats and cavernous air space around them.

I'm curious how it comes out though... I haven't actually walled off the entire trunk.

TAMU wrote:

johnperdeye wrote:

TAMU..... has it backward you can do 2 cubes in the sealed chamber and 6 ported per sub should be fine.

2 cubes for 2 18's i dont think so.bandpasses with small sealed chambers are for spl tone burst and very careful tone burst at that.
those 18's wouldnt last 3 minutes in 2 cubes sealed on music.

I had no problem with my MT 18s in a 2.5 sealed box each. The ported chamber was around 50^3.
2 cubes for 2 18s.......................I don't know about that one.
Best of luck.

Re read my post. I said 2 cubes sealed and 6 ported per sub per sub.

Alan wrote:

ive only doen 1 3rd row wall . in a trail blazer. 2 mt 18s and 2 memphis 4ks... was less than impressive. had much better luck with a up fire ported box. thats a smaller suv so it might not suck. but i just wouldnt do it .. but it looks like its too late lol

Not enough room for standard box for 2 18's.....hence the walling the 18's...i think it'll work out

i am always against walls myself but the way i see it if thats what makes you happy then do it, cause you have to look at it everyday i only look at it for about 5min of demo time lmao.
2 cubes per sub sealed an 6 per sub ported is fine for band pass i think too cause craig's bandpass was like .75 per 10 an about 15 or more cubes ported.
yo twisted good luck man on the build its looking good so far i am following the vids also.