THREE 13” Subwoofers Under Seat Enclosure! Box Design process explained!

[@CarAudioFabrication]

Thanks for tuning in! - To watch the rest of this build process go here - kzbin.info/www/bejne/d6vKiYCQptmcgLs - Save 💸 on your next car audio purchase with our show sponsor Crutchfield here! www.crutchfield.com/I-rCAFcYTB/rf/ef28766d-4881-4df6-9f8b-287145ad3d36/ - Purchase the enclosure design here - www.caraudiofabrication.com/product-page/jl-audio-3x-13tw5-2-248-cubic-ft-sealed

[@kid_rajah]

Do you recommend using sound deadening inside an inclosure? (ported & non-ported)

[@DerekRichardson503]

Good work 🤞❤️🚘🔊

[@Chr13t1ansen]

like how you explain everything in detail of every step for everyone to learn from

[@JG-pj3bg]

It’s good you mentioned that other things were going to occupy the speaker enclosure volume, to many forget to add that in when building an enclosure

[@Strykenine]

So this is exactly the part in my build that I've been hung up on. Downfiring subs may be the way o go for me as well. The other thing I have been looking at is building a router table so that I can rout the MDF that I'll need for the corers. I've always wanted a router table anyway, so it'd just be a bonus. Thanks for the video Mark! Great info as always.

[@fortyfukinseven]

I'm fairly certain he has a video/series of videos on building his router table. It's a few years old, but I remember watching it.

[@princequestly2218]

3 w7 13s are gonna sound amazing. 🤩

[@idontcaresapo8233]

Men I got two tw12 in my truck and they rock. I can’t imagine 3 13”

[@justanother9184]

the tw3 is way better than the tw5 don't be jealous, you probably already have more output. If not just add another 12 and you will for sure.

[@yungboosterse4t66]

Hey mark, I would like to thank you for inspiring me to build an audio system, I started with an 8inch sub, and now I did all my speakers, a 12, a 4channel amp and a monoblock amp. I have all Skar audio equipment and to be honest I’d say it’s pretty impressive for the low cost, but I couldn’t have done it without the knowledge you put in your videos!!

[@hilham89]

I just came from yiu last video talking about the speakers and though you was making the box and testing the subs in this video...it was still helpful though. New subscriber

[@tnt666tnt]

I have 2 sundowns in a fox acoustics box in my 24 GMC 1500. It pounds! Super happy with the down firing. Tried 8s front firing, alpines down firing and lastly 4 8 sundowns forward. The fox box is incredible.

[@pandabear7894]

I’ve previously done a build like this but with 4-10s. Don’t rely on just the glue to hold your baffle, it will eventually come apart. Use screws also to support the weight of the baffle and drivers. You can countersink and cover with wood putty to hide the screws.

[@mikecasey3055]

You designed my last two subwoofer enclosures now I’m wanting to switch it out for this one

[@fraool944]

Defiantly Going to Be Building this one !! Cant Thank you and Your Quality Knowledge Enough

[@RyanLoper9]

Would LOVE if you could do a video on box design for trucks with no under seat storage. Specifically the new Tundra iforce Max where both car batteries are housed in their own storage box under the rear seat.

[@kjata77]

Thanks, Mark. The best cheap (used to available "open source" enclosure design software YEARS ago, how I got it, was WinSD). If you are tight on space for an enclosure, manufacturer recommendations are just that... a recommendation for optimum output-internal air space. For example, even Hertz has an optimal size for a sealed enclosure (for their 12" shallow mount sub) with .8 cu.ft. internal airspace but their manufacturer enclosure is .72 cu.ft. The software doesn't know the specific vehicle, "real world" cabin gain, reflections, etc. of course. LOVED that you shared that a slightly lesser output (in SPL) is insignificant to the listening experience. Unless you're competing in SPL events, design for you vehicle and daily listening experience, IMO. Unless you spend a lot of time parked & playing your system, even a 1db difference in SPL will be totally unnoticeable, especially while driving. :D

[@craigshea2930]

Once again, very nice work! I always learn something when watching your videos.

[@illradotrucks491]

Great Setup Been Running For A few years Now

[@Zgurkogel]

Love your 3D design skills. The inch fractions you use boggle my mind. Time to convert to metric! ;-)

[@Dingleberry1856]

Aahhh is it too difficult

[@Zgurkogel]

@@Dingleberry1856 haha metric is not too bad. Unlike fractions (15/64th of an inch anyone? 😁) metric uses decimals which makes life a lot easier. 🤩

[@joansebastian7663]

Great video please make one for 3 tw3 10”s and share measurements 🙏🏼

[@josephtoman6797]

Awesome video 👍🏻👍🏻

[@ZoeyR86]

Passive rads really help builds like this

[@CarAudioFabrication]

While they can be nice I find that if you have the space to add a whole other "cone" on the passive radiator you might as well add another subwoofer, especially when there are great solutions out there on the market that use such a small air volume.

[@ZoeyR86]

@CarAudioFabrication I agree that this build with those subs is a good match. What I will say is the vast majority of people I do installs for they just want the highest spl per dollar. Or are they dead set on using ___ subs. Like I can take a box this same size drop a pair of kickers or sundown sa/x with a single 12in tuned passive rad in the middle increasing box net volume as I don't need to subtract a big port from the box. But you know this, so more or less a post for viewers

[@andrew-i1l3k]

TICKOK BROUGHT ME HERE LOL

[@marktravis5430]

@@andrew-i1l3k me too

[@marktravis5430]

Me too

[@iamFORTY-EIGHT]

It would be sweet if you could do a build for a classic square body truck like a C10 or D100. Making an enclosure for behind the seat on a sigle cab.

[@maya00795]

Awesome........... Greetings from india🇮🇳🤠🤠🤩🤩🙌

[@lamonteleary5626]

Do u build boxes for people? & if so how much?

[@devencherry8976]

I know he offers designs for boxes on his website if you want one

[@lamonteleary5626]

@@devencherry8976 ok thank you

[@custom_5u6_life]

I got a design from him. The design came out awesome. I just haven't built the box yet. I kinda want to start a company building boxes but I don't have much time.

[@DISOPtv]

Bro just casually making a $3,000 sub :D

[@bradleystewart8690]

It would be cool to see how you would do this. Like on a floor that has multiple steps for the transmission hump. Much like a 08 silverado extended cab.

[@DesignBuildWorkshop]

Hey Mark, always enjoy your videos! I have a question- I just added a couple of subwoofer enclosures to my Jeep and they are directly screwed to my deck drawer system which is essentially a large hollow box. Could I be getting any benefit from the deck system, increasing the resonance of the bass, etc? Thanks!

[@DMin4147]

Great Video!!! I have been researching on this subject trying to start my first build. What program did you use for the designing process? Not Winisd but the one you did the build on?

[@Bill-fk8sf]

Can you design a box for 4 JL 13tw under the seat or four 12TW?

[@fichinjedi]

Any idea how to build a box for 2 kicker solobarrak 12" L7 that will fit between bucket seats in a old school two seater truck?

[@devencherry8976]

Love the videos

[@breno.ds.bu_]

Very great!!! What software you use for 3D model ??

[@kingtut70546]

I have a 2018 Chevrolet Silverado 2500hd High Country crew cab. It has a factory Bose system in it. I would love to add subwoofers, but I don't want to move my seat. What are my options ? Thanks in advance.

[@jessiefrancis9630]

Curious as to weather it is worth doing a similar build. I currently have 2 13w3s rear firing in a sealed enclosure in my 2020 expedition and want more. How would 3 downward firing 13tw5s compare to the set up now relating to spl and frequency range?

[@michaelkesterson4401]

Great video, curious why you would not individually seal each speaker. Doesn't the vented brace allow for some push pull from the other speakers in one cabinet?

[@CarAudioFabrication]

No reason to when they are fed the exact same mono signal.

[@ThatHz-]

Would be nice to see how it does below 20Hz

[@Emm-g4g]

What would be better for a 2020 Silverado crew cab ? 2 x 13.5tw5’s , 2 x 10w7ae’s or 2 x 10w6’s I’m having a real hard time deciding! Clean deep bass I’m after,

[@EdgarMendezz]

I’m no expert but based on my research. You shouldn’t wonder what size sub you get. First figure out your alternator capability. Then the subs that match that power capability, and that will fit in your truck. I think the subs in the video are good if you have enough power going to them. But if you don’t have enough power then bigger doesn’t mean better without the proper power. Especially for sealed where you need more power to move the big sub, in an airtight sealed box where the air has nowhere to go. (Shallow or not, it takes power to make power). Let’s say power is not an issue for you, then I think 13tw5 is a good option cause of limited airspace on a truck. But keep doing some research. Sorry for the rant but usually the root problem is the power not the size of the sub. Hope you find your preferred sub goodluck!

[@siderbrighthelm]

What about the backseat of a car? My fiances subie has a sub under the driver seat, i think it'd be cool to do the backseat as well for friends

[@davec5520]

Can i get specs to build an enclosure like this for an 8" Skar VD 12 D2

[@Jonathan_Doe_]

Does pointing down end up turning the gap underneath into a port that needs tuning? Kind of like a bandpass?

[@CarAudioFabrication]

We discuss this in the video :)

[@kbman69]

The "simple" answer is yes(ish). I have calculated this variable many times with down firing ported boxes and found it just flattened the response on the higher "mid bass" end instead of rolling off steeply. more than likely in this sealed enclosure it would just continue gaining db into the 200-250 range which will be null anyway with most people using a low pass cutoff of 80-100..... So in THIS case it wont make a noticeable difference. Hope that helps answer your inquiry.

[@gjkrisa]

how close is winisd to the real thing?

[@getsome1384]

$899/ea? Wowzers

[@TheAceTroubleshooter]

I wonder what a radiator and 2 subs would look like in this same box?

[@michaelcox1851]

I have a F150 with an MBE 4 8inch enclosure. It isnt great. Even with a seat lift.

[@michaelcox1851]

SO hard to beleive that an enclosure with 3 13inch woofers would have any low end at all

[@TheLawlessGang]

what 4 8s? elaborate wat isnt good about it??

[@TheLawlessGang]

also whats ur power supply?

[@CarAudioFabrication]

You must have never heard JLs shallow mount line

[@fortyfukinseven]

Have you considered doing a budget minded build? I appreciate that you use quality gear, but there is a very large subset of people who want to upgrade their system without spending several thousand dollars. There are a few budget friendly brands that are of reasonable quality.

[@CarAudioFabrication]

The process shown in my videos can be used for a $100 system or a $10,000 system. Think about it, how would this video be any different if you were using cheap subwoofers (other than they obviously wouldn't sound as good)

[@AverageOverlander]

Can I purchase this CNC file from you so I can make one for my F450?

[@CarAudioFabrication]

Blueprint is linked in video description. You could easily redraw the parts from there for export into your CNC software

[@georgeb7050]

Why didn’t you enclose each sub instead of a brace in between each sub?

[@CarAudioFabrication]

Subs are being fed a mono signal from a single amplifier. There is no valid reason to divide

[@michaelcox1851]

and 900 dollar subs EACH!!!....LOL...I bet it wont even bump.

[@CarAudioFabrication]

K

[@SQ_Silverado]

This guy has four 8” subs being choked out in 2.5cf box.. he doesn’t understand subs need proper air to play low end.. these tw5 are extremely efficient and will knock your boots off while sounding phenomenal. You won’t believe they are low pro subs.

[@cesaralcaraz4]

@@SQ_Silveradolooking to do 3 10 inch tw3 Jl audios. I’m curious if you have any experience with them and how they sound with Mexican music ( epicenter). Just used to loud deep bass but don’t have to much room under my rear seats

[@2lazy4u]

Learn and use the metric system, every thing you say makes zero sence. If you want any accurate measurements, please use the metric system.

[@BS-Reviewz]

@@2lazy4u 😂🤣😂🤣

[@youdig3691]

this is America, if you don't understand standard, watch somebody else.. the audacity to tell someone to do something just for you is ignorance, the nerve of some people.."cater to just me, change your way of measurement just for me"..stfu.. by the way, learn how to spell "sense".. not "sence".. 😆 😄.. you have the gall to try to make someone change something but can't spell.. everything is a complete word btw.. not every thing.. those are 2 different meanings, 🤡

[@CarAudioFabrication]

Lol, the measurement system used has nothing to do with how "accurate" a measurement is. Also the vast majority of my audience is in the United States.

[@2lazy4u]

@@CarAudioFabrication Rest of the world including the US military and NASA use the metric system because it's more accurate. Not everyone has an advanced science calculator with them all the time for advanced calculations in the imperial system when you can do it in no time in your head with the metric system without any advanced equipment.

[@CarAudioFabrication]

"Advanced science calculator". Bro has never used division and multiplication before. I always find it funny that metric users think their system is so superior when they don't even understand how to convert.