(FULL) 6th Order Trunk Wall Build for 2 12" Fi BTL Neo Subwoofers!

[@drewanderson8279]

Ok so I have a 08 crown vic pi. I wish I could find my drawings from 5 years ago. This is my drawings comming to life with different subs. I saw you on a jacob viral video and then I was searching 6th order builds and this popped up. I'm in shock as was my ol lady. This was exactly what I drew up. Even cutting the metal bracing and rear deck out. Lol I just finally got the last piece I needed to star my build. Thanks fr sharing your build. I know what hurdles I'll have to jump through now. I love it man! I have 2 SA XV2s 12 in subs with a sia 3500 on them. It's just a start rn. Next year I'll add to it.

[@JayyCobb]

That's really cool to hear! I didn't know I was featured in one of his videos lol If you end up building something similar, I'd love to see it 👍

[@drewanderson8279]

@@JayyCobb I will be soon!

[@nitrodamusprediction-windy4870]

Damn homie, you should make more videos! I brought my dinner to my desk and thoroughly enjoyed this. Good job!

[@JayyCobb]

What a great comment! You just brightened up my day. I'm currently working on walling off an Astro van and should have it completed in the next few months but no promises yet.

[@kenny78h]

Amazing video! Thanks for taking the time to explain things as you went through the process.

[@JayyCobb]

No problem. Thanks for watching! I have another build much larger than this to post up soon.

[@jerryaintloud5147]

crazy build for just 2 12s, love these types of builds, great work man! Would love to see more vids on this system!

[@JayyCobb]

Thanks man. I'll make another video of them playing once I get my doors redone. I need more mids to balance the system out now.

[@effenrad6776]

Even when I built my wall I could not commit as much as you have. Damn. Good job

[@JayyCobb]

Next vehicle, i'll do a wall. I don't want to be confined to such a tight space again.

[@KiethKieth-fw4gr]

Donald Trump said build 😳 the wall...you took it to another level

[@JayyCobb]

Much appreciated! Thanks for watching.

[@christophermeadows1786]

good damn work 100 thought thee doors was coming off.

[@onewheelup]

i enjoyed the hell out of this video dude.a ton of time,money,and work huh,to go big you always have to do big changes and thats what you did.i wish you would have talked more on how the 6th order was set up and tuned to because i dont know that much on 6th orders,but no big deal,hey thanks for taking the time to video all your work and talk thru it,later

[@JayyCobb]

Thanks for such a positive comment! I paid someone else to figure out the tuning/port sizes to minimize my risk as far as damaging subs go. 6th orders, in most cases, are basically a ported box within a ported box where one chamber is smaller than the other and tuned lower as well. In my case, I went for a 2:1 ratio where the subs share 4cf. in the lower chamber tuned around 25hz and 8cf. in the main chamber tuned around 50hz. Thanks for watching!

[@lowfrequencies5534]

@@JayyCobb Hello, can you give the characteristics of the box, the settings and the volume of the cameras?

[@ابوسليمنقيبالجوفي]

Nice build. Im going to do a grand marquis truck build 6th order with 4 evl 15s it wil b very similar. Thanks for the video and tips.

[@JayyCobb]

Thanks for watching! Hope your build turns out great.

[@Iam2double3]

Nice build! I likes the step by step breakdown.

[@JayyCobb]

Personally, I feel it dragged on a little too long but I'm glad you like it! I do the same thing but to a little lesser extent with my 8 18's van build. Thanks for watching!

[@BARBELLS-AND-BUDS]

This is awesome dude! Thanks for taking the time to document this whole thing into a contiguous video.

[@JayyCobb]

Thanks for watching! I'm glad you enjoyed it.

[@Drunken_Hamster]

I hate to say this given the absolute state of your dedication, but... All that work and all that TRUNK for just two 12's? Guess my dreams of fitting two 15's 6th order in an accord coupe are shot, then. Let alone an 18 or two with a normal port.

[@JayyCobb]

I'm sure you can make it work. You never know unless you try! Even though this build is long gone, It remains as one of my favorites.

[@brianwinter1453]

I did 2 12 6 order design mine was a 1 to 4 ratio. It did 17 to 72 Hertz Peak 32 on low and 47 on high end. It was in a 02 Honda Accord coupe.

[@JayyCobb]

That range is very impressive. The box had to have been HUGE @ 4:1!

[@brianwinter1453]

Yes it was 14 cf on front and about 3 cf rear​@@JayyCobb

[@brianwinter1453]

kzbin.info/www/bejne/a3XJi5djbrGlicksi=y_cYwsgt3eiZqhjN

[@brianwinter1453]

What kinda car you doing it in

[@brianwinter1453]

kzbin.info/www/bejne/a3XJi5djbrGlicksi=y_cYwsgt3eiZqhjN

[@stevemaniaci4750]

Nice work man , must had been alot of time to wait for those FI subs , cant blame you though . Im taking my time with 2 apocalypse 3012r subs in a sedan car build also.

[@therealpaulyd9558]

I love how it turned out. Looked a lil sketchy before it was finished but dam it looks really good. I’m sure it sounds great to. Good job

[@JayyCobb]

It looked way sketchy. I wanted to do a "big" build and had to choose between a trunk wall or a b-pillar wall. As someone who's still pretty new to this, I though the trunk would be the easiest option. I had no clue how hard it would actually be and would probably choose the other option if I had to do it again. Thanks for watching!

[@christhopherlasher2828]

I too will be building build similar but you got to take in effect that your light bulbs in your tail light could go out I hope you don't ever have any issues but those parts do wear out

[@christhopherlasher2828]

Go bass heads

[@JayyCobb]

There's just enough room to get your arm in there to change them. It's definitely a price to pay for a big trunk system. Thanks for watching! Hope your build turns out as you want it to!

[@christhopherlasher2828]

Mr. Cobb did you ever and it metered. And did you have the other setup metered also. Just curious on the DB gain

[@JayyCobb]

@@christhopherlasher2828 If I remember correctly, the red box metered a 145 and this one a 149. I don't own a meter so the times I got to meter it I didn't try every possible tone etc. Of course, the current build has a wider bandwidth too.

[@CrystalClearSQL]

Awesome build log.

[@ogairbender808]

I'm dropping by from time to time buddy,😎📻🔊nice work,and fi for the win.

[@JayyCobb]

Thank you!

[@DJ-Art-Morris]

Legitness

[@JayyCobb]

Totes!

[@amanteapasionado6836]

You should make a board to cover the opening into the cabin and experiment with different size openings

[@JayyCobb]

You're right! I haven't tried adding any kind of loading wall yet. Maybe I will sometime in the future. Thanks for the comment.

[@brianwinter1453]

Make port smaller on front what rear tune to?

[@richardklajderman1609]

Hits good an nice build

[@JayyCobb]

Thank you. I appreciate it!

[@izaakavenaluckyss1933]

Beautiful work!

[@teebop2xsxd321]

Good shit bro hellllaaaaa work!!!!!!!! From start to finish yu knocked it outttttt!!!!

[@JayyCobb]

Thanks! I appreciate the kind words!

[@ابوسليمنقيبالجوفي]

Yes lol very dedicated bass head. I appreciate a real bass head.

[@teebop2xsxd321]

Helll yaaaaaa I'll A U.S AMP An Some RockFord HX2'S!!!!!!!!

[@jeezee007]

Nice work bro! Good solid box and design!

[@PHUSII]

This is sick. In my car the gas tank is not as wide but it goes all the way to the top of the trunk roof so its a pain in the ass. have cut all of the trunk roof off but the opening still aint that big. :(

[@JayyCobb]

Well, I hope I gave you an idea or two. Half the fun of installing car audio yourself is figuring out these problems. It makes the end result that much more rewarding! Thanks for watching.

[@catherineharris4746]

Fkng outstanding!👍👍👍

[@bigque1988]

That’s shit look good and sound great

[@JayyCobb]

Thanks!

[@gavinmcclure8047]

Man I love the video. I want to do a build something like this next any tips?

[@JayyCobb]

Thanks! The best advice I can give is go for more than you think you'll need. 2 12's sounds great as a trunk wall but 2 15's in a b pillar wall would've been so much more! To each their own on that of course. What kind of build do you have in mind?

[@gavinmcclure8047]

@@JayyCobb a grand marque around the same year as yours two hdx4 12s on a soundqubed 4500 wanting to do a 6th order after seeing this. I was in a toss up between a 6th and a 4th till now I think.

[@gavinmcclure8047]

May add a more to it

[@JayyCobb]

@@gavinmcclure8047 The new hdx series are some nice subs! I'm in the process of doing a 6th order wall in an Astro van with some of the hdx3 18s. Are you planning on doing a trunk wall similar to mine or are you going to do a b pillar wall build?

[@gavinmcclure8047]

@@JayyCobb I'm really digging your. Set up tbh cause I always put a lot of mids and highs in my set ups. to be musical as Well as a power house. My question is what type of electrical do you advise on since I'm jumping from a import on my last toy.

[@monstral6331]

very very nice work!

[@JayyCobb]

Thanks for the kind words!

[@PsiGodracing]

dude great to watch such a inclusive vid.

[@JayyCobb]

I feel it drags on a little long but I wanted to show as much as I could. Thanks for the positive comment and thanks for watching.

[@PsiGodracing]

And what did this little setup meter ?

[@JayyCobb]

I didn't mess around with it too much but I managed a 147 flat at 29hz on music with the driver door open.

[@PsiGodracing]

JayyCobb that's not to bad dude. And what amp was it again?

[@JayyCobb]

Ampere 5k wired to 1ohm and doesn't have any real box rise when resting. Electrical is a GP 350 alternator, XS d6500 under the hood, 2 Northstar agm220's in the back, and 3 runs of 1/0 ofc front to back.

[@Galaxiiee02]

Right side in... and some PL, left side in... and some PL, back side in... and some PL, hotel trivago... and some PL🤣

[@JayyCobb]

Had to throw that in there at the end haha. Well, in the build I'm currently working on, I don't mention PL nearly as much. It's just implied lol.

[@bertw26]

What is pl?

[@KyleKari]

great vid bro love it!

[@JayyCobb]

Thank you, I appreciate it!

[@michaelsears306]

Cutting out cardboard first and making a template would have saves you money on material

[@blackranger900]

Is your spare tire well in the bottom of the middle of the trunk? I can't really tell.

[@JayyCobb]

The spare tire would usually mount to a hook on the very top of the gas tank on the passenger side right under the rear deck.

[@MayhemCarclub]

Do you still have measurements for this build

[@JayyCobb]

Not exactly. I know it was roughly a 2 to 1 ratio with 4 cf in the smaller chamber with 2 4" aeros at 17" in length each. I added somewhat of a loading wall later on but don't remember how big the opening was. Hope this helps you in some way if you intend to do something similar. Thanks for watching!

[@MrBodean2010]

Sick

[@JayyCobb]

Thanks for watching.

[@MrBodean2010]

@@JayyCobb wish I had enough room for my 4 u12s in a box like that

[@JayyCobb]

I wish I had room for 2 more 12's too but I'd end up needing a proper wall for that. Maybe you'll be headed in that direction ;)

[@MrBodean2010]

@@JayyCobb 6th order wall, should get nasty

[@DIYGANG901]

I subscribed because you sound like a cool math science 🧪 teacher 🤣😂yup I gotta teacher on KZbin

[@JayyCobb]

I've definitely never been told that before lol. At least I'm cool! Thanks for watching and subscribing!

[@mattesser9890]

did you ever shrink that back port?

[@JayyCobb]

No but I did end up adding a loading wall. This car will be phased out soon and replaced with yet another crown vic lol.

[@effenrad6776]

Crown Vic’s yup. Me too

[@JayyCobb]

Gotta love em!

[@patrickbranchini378]

I'm doing a grand marquis. I have to keep the back seats though. I'm thinking deck blowthrough. Build a step up port and fire it through a big ass hole in the deck.

[@EcSsAwS]

Is that two 4" aeros? Ida used like a 7"ish octagon port Or pair of 6s

[@JayyCobb]

Yes, they're 4". I don't know too much about 6th orders to be honest. What would larger rear ports change?

[@therealpaulyd9558]

I’ve been wondering about aero ports altogether like how size and length change tuning. I have 3 optidrive 12’s In a6 cube box with an 8inch aeroport the ports 12 inches long and i have it 7 inches off the back wall it sounds really good and hits hard but I just wonder wat different sizes and lengths would change. So I wonder to wat bigger port would do in your 6th order. Would it drop the tuning or raise it

[@JayyCobb]

As far as length goes, the longer the port the lower the tuning. My ports are roughly 2" from the top and 2" from the bottom of the box so there isn't much room for change. I had actually paid a box designer to figure out the best size for my specific needs so I couldn't screw it up.

[@MasterDJRenn]

The larger the port the longer it has to be for the same tuning, a 4" port need to be around 6" long in a 4 cu/ft box for a 32 hz tune where as a 6" port needs to be around 15" long. There is a really good port length calculator on Precision Sounds Products website. I cut my per their instruction and the tuning was spot on.

[@TaylorMadeTheater]

Whats PL?

[@JayyCobb]

Only the greatest line of adhesives Loctite has to offer!

[@rogeriomarcio925]

Show!!

[@adamtaylor8293]

Got some PL

[@JayyCobb]

I got some for you right here.

[@Medicated234]

Whats pl

[@bigque1988]

No problem bruh u definitely gained another subscriber I got a few videos on my page u should check them out

[@JayyCobb]

How you liking that HCCA?

[@bigque1988]

I got 4 I’m just only using 1 at the moment in my Touareg but I’m finna buy a 06ss Monte Carlo and put the other 3 in I can’t wait on a ns1 v2

[@JayyCobb]

@@bigque1988 That's going to be sweet!

[@carlosoliveira-rc2xt]

I don't understand all this for two 12 inchers and not even for good sound.

[@JayyCobb]

It's quite the extreme build for only 2 12s but it was worth the extra effort! The camera mic distorts the sound but it person it sounds great. Thanks for watching!

[@DeeMandoComando]

Crack Heads love Glass, Bass Heads love Wood! Ha Ha Ha...

[@JayyCobb]

Brightened up my day with that one lol