For beginner’s that don’t know any better. The enclosure is just about the most important thing in a system. Prefab box’s are very good for shelving space, that’s about it. You can throw together and better box yourself in an afternoon for less money that buying a prefab.

Did an awesome job mounting that amp!👏

You stepped your music selection up bro.👍 Nice job.

Thank you so much for posting this, perfect timing as well! Just yesterday, I got a piece of plywood to do this to my box, because ive been very confused as to why I cant hit lower than 40. Didnt know if it was a box issue, subwoofer, or amplifier. It moves plenty of air, just can't hear the sound of the notes. So this should help fix this issue. Thanks for doing something like this and showing people how to tune a pre-fab. Mine wont be proper or pretty, I just need it to hit a few Hz lower, I'm a fan of the sustained low-low notes. Posting videos of my current upgrade process soon as well. I'm new to posting vids, but I'm trying to get it done. Not fancy, not much music, and no editing, but I like what people like you do.

A subwoofer with an fs of 30hz and a ported box tuned to 30hz. Is the sweet spot.

I did this to a box that has an hx2 10", using it in my home theatre surround sound. I must say adding that piece of wood to shorten the port made a difference in my box.

Do what you want and how you want. It's yours. Bump it till the wipers fall off. Oh by the way I have settled with Rockville. Since the glue issue in the aluminum, you've done an awesome job keeping us informed of the Destroyer. Im Investing in incriminator

Remember when you enlarge the port in a attempt to lower the resonant frequency of the box you are also increasing the displacement of the port. That in turn, lowers the net air space of the box raising the resonant frequency of the bix. What you end up with is a very small drop in tuning from lengthening the port. I'd estimate 44 to 41hz with 12 more inches of port legnth. If you want to get down to 35 your going to add another 12 inches of port probably more and you'll need to add some external port length. That will extend the port without decreasing net air space, a much more effective way to drop that tuning. Even just 4 inches of external port length will give you 2-3hz drop.

I got a box for my L7 Q class 15” , it’s a prefab, and I did the same thing . Extended the port internally, but due to the box being too small for most 15”s , I put a front baffle on and put a 12” in just to test it out, and woah I’m impressed. Sounds really good and gets low. Sounding much louder and clearer than the 15” did and digging way deeper . The box was originally tuned to like 40 hz . And now I’d guess it’s around the 34 hz mark, going to extend it a bit more to try and get close to 30, and put a front baffle on made of birch, and stain it and go with an extra high gloss finish. Should be a fun project just to revive a box that was basically useless . It hardly fits my Mercedes trunk, but it fits and that’s what counts . Hope to see more videos like this, turning prefabs from trash to good . May do the same with a 2 12”s box I have, it’s closer to spec for some good 10’s, extend port, put a nice new front baffle on, should be good 💯

Actually there are some decent prefabs out there. Good vid. Nice little setup

I say that if using screws helps to hold it together and get the results you're looking for then use those grooves! They saving you money!

Was the 2.9 cubic feet you used taking into account how much displacement the new port would take up?

Looks and sounds great I got the same set up I was wondering how r u running the sub one or two ohms and how did u adjust the levels to your amp

Damn bro you're coming up quick keep up the hard work 👍

Almost every song you played I have and good selection 👌🏽.

I have the same model jeep and I had problems with the sub not going low like it should. Turned out those grand cherokees have noisy interior panels back there. I added sound deadening to the inside of all the rear panels and it sounds much better. Hits lower and cleaner.

You are doing great,i like how you dont talk bad in your videos,good job man

If you shop around you can get a pretty decent prefab for your sub. Some tuned around 34hz. Obviously custom box is ideal but not everyone has the tools and time to build one from scratch.

7:30 I love that song for testing subs. Such a good baseline song

Excellent job Parker really nice

I just made a sealed bass tube with a W65K9D2, I built it using "Subwoofer Tools" (after I converted 0.4 cubic ft in a box to cylinder measurements)! I know it won't hit 35hz with that thing but do you think it will bump?

You got some beautiful grass! Gotta appreciate some good "turf" when ya come across it.

Holy shit I just seen the size of your amp and I got the rp 3500 and now I’m rethinking of where I’m gonna mount it lmao

Dam thank young home..This was something I dint know that Rockville sub looks MEAN. I just learned how to tune my boxes in a mater of min.I use prefab boxes for that same reason ..You got a new subscriber..

Keep doing what your doing sir great work you really help people like me a lot to select the right subwoofer for my car thank you a lot I really appreciate it

keep going, great work! 💯😎 gave me some ideas for my channel!

Just with my headphones i can tell how low the sub dropping bass, I love it!

I like seeing you get excited about car audio. keep it up.

Good job bro... Keep up the great work

Would this box still sound good if you cut out another sub..? Make the box a dual or would it mess up the sound...?

Have you considered adding poly-fill batting to the box? It can lower the effective frequency of the box without adding port length.

Dude. Your awesome. I appreciate this video.

How do u like that amp?? Thinking bout getting one.. I heard its a power hungry monster??

the black on your coul is actually a very high temp adhesive and its a good thing.

Do you think it would have hit harder with the sub flip upside down. I just purchased a sundown x12 v3 and I’m looking for a 32 hertz box but I can’t find any online.Great video bro.

just curious what do you have your cross over set at on your amp?

Hey Parker if you turn your box so the port is facing to the back hatch tbat tends to usually be a little louder,as well as reinforce those low notes.

Sounds good in that Jeep!

I always modify prefabbers. They're always tuned way too high. I always add to the port of make the port smaller and longer. Also, you can take away air space or add poly fill to match the airspace.

Ya invert the sub get maybe .2 more cubes. And put the box where the port fires to the rear and the subs magnet faces the rear passenger wheel bass likes to bounce off stuff. Then play some Bassotronics!! I rock prefabs and add wood glue add screws ever 5 inches to make sure the box is reinforced till I make a better box myself. Cool vid like the flexn shots.

I just bought this Q- Power box for $75 shipped on ebay for a temporary box for my Resilient Sounds Onyx 12". I was pleasantly surprised by how thick the wood was, 1" faceplate and .75" everywhere else. the tuning is about 38 hz with this particular sub. The glue on the carpet is minimal and the terminal cup is worthless being way too small. 10 GA wire at best. I just run my 12 GA off out the port. I don't hear any rattles at all and it holds my 85 lb sub no problem. I'm still going to put liquid nails inside the box and maybe a brace or 2. It doesn't vibrate much at all. For $75 bucks, you can't beat this box. It's also high density partical board not medium density like most boxes. I was really surprised. With some liquid nails, it will last forever. The existing caulking they used is garbage but I do see glue drips, so they used alot of glue for sure. I wish it had a lower tune but I may cut a piece of ⅝" wood and install it against the existing 13" port to narrow it and lower the frequency so I don't use up any air space like Parker did doing it that way but it worked for him. I need the airspace.

This video just inspired me to do the same thing. I have the same enclosure but I have the version sprayed with bedliner from Sonic electronics. Their specs say 2.5 cu. Tuned to 43hz. I added 11" to my port length. I have no idea how much it lowered the tuning but anything lower than 43hz is an improvement. I'm still waiting for the glue to dry so I haven't listened to it yet. Love the channel content.

do you have a listing of the bass tracks you were playing?

Interestingly enough , the extra wood adds mass and rigidity . All the while lowering the tuning !! Thats a win win +Win man . Thats an awesome budget bass lifehack , Heaveans Yes !! !!

What’s up Parker .. do you know the measurements on the piece that you cut to make that box sound better ... I have the same box and would like to do the same

I had a box built custom and the builder told me if was built to 32-34hz but it feels more like high bass, instead of the lows that should be hitting when I play rebassed music, how can I find out currently what my enclosure it tuned too and how to adjust it? All positive suggestions welcome. I have Two B2 Audio RageXL-15s.

If you ever do go into a custom build id recommend looking into round ports :)

Good job dude .

Was that an Orion inline volt meter? If not, please advise to what it was. Thanks.

What was the app you used to figure out the vent length and measurements to tune?

Whats a good app to you to build a box. I have 2 10" american bass xr in a prefab box a cheap one looking to upgrade

So is it okay to cut down the air space in the box by add two layers of wood on each corner?

That was a good show 👍👍

Have you used any Obcon enclosure? I had ones with 2 aeros and a "hidden chamber" and it made my kicker cvr 12 sound amazing!

thanks man, just what I needed

told u, shoulda got that skar vxf! no worries tho man ur learning, you're teaching and you're enjoying. what more could u need?

Where did you get that fuse holder from?

Nice job! The only difference on my box, what I was talking about doubling the mdf is I ran another piece on the inside the full length of the port, 25.5" making the inside width 2.75" on the port. This lowers lowers tuning a little more for me.

Yes sir 🙏 you gotta believe

How long did the Rockville destroyer sub last you?

Awesome Parker, I think you played all my fave songs. I have a request foryour next video...play 50k by Woka Floka Flame ✌

Parker rules!✊

What if you wanna tune your box higher? My box is tuned to 28hz but what if I want to go higher? Can I or do I need get a new box built?

how do i account for port displacment i know i will take up air space how do i know how much to add too the over all box?

What can.you use to record? the Mic is great on it

If you go you on the back wall how to you plan on getting a panel bigger then the hole in the box unless you make it semi short

I’ve always put a wash rag behind my license plate, just to help with the rattling. Yes I know they make sound dampening matts or padding, that helps, but us broke country boys can’t afford all that lol great video man!

Excelente Trabajo, Y Gran Video #Brother #Saludos

I built a triple 15in ported subwoofer box for my XFL 1522... It is 4 ft long.. 1 ft and 8 in high.. and 2 ft wide. I have a rectangular port in the bottom front facing my Escalade truck llid. How long should my port be? It is 5 inch tall 2 ft wide

Hey Parker how's it going? I have a quick question. I'm building a enclosure for 4 12s. Enclosure is 44 x 18.5 x 28.5 and im wondering what size port would I need for a tune of about 32hz. Thanks in advance.

Great informative video, appreciated ❤

How would you set your hz tuning on the amp after knowing what your box tuning is???

NICE vid!

Move your port from the left side of the box if your looking at it from the back and make it face the trunk so your port letting its air flow hit the trunk and then move forward you’ll hear a big difference position and where the port is does play a very big factor

Is that the Atrend LSV B Box from Amazon? (Might have the name wrong) if so I bought one for my type R 15 years back and it was 4 cubic ft tuned 42hz maybe a lil higher but it was an awesome box. Sounded great.

Did the adjustments work?

If it’s 2ohms already do I keep it at 2ohms?

Am a big fan bro I love your videos

I started building boxes about 2 years ago Im still young about to be 19 and have improvements to make but one thing i can tell you is putting that sub in a bigger box will make it hit much lower i have my 15 in a 2.5 cubic ft box tuned to 31 hz and my other box is 3.5 tuned to 35 hz and even though its tuned higher the extra air volume make is hit much much lower than my box tuned to 31 hz and just the sound alone is much deeper, put that rockville in a bigger box and itll hit much lower Id say 2.5 cubes tuned to 35 is a good box to still be musical and hit those lows and also another point is to hit the low lows you want all your air to be between the sub and the port unlike a lot of boxes with the subs facing up and a vertical port facing the trunk, a box with a sub facing up and a horizontal port on the bottom will play lower and sound deeper since theres more air space between the sub and the port

So did it actually make as big of a difference as you were hoping Parker?

Any coil will have those burn marks. Check your amp gain settings. Amp clipping does this on coils. You are maxing out the rail voltage.

Where can i go to get dimensions to build a ported box for my skar ddx 10's for a Jeep grand Cherokee?

i put srews in carppet myself there shouldnt be a problem

My box was built in account for subs displacement so would inverting them make them hit lower if I have enough room so they don’t hit the backs of my seats

Next time cut it longer and slide it in and just lay it on the original port and just screw it to that, then u can slide it back and forth to adjust tuning unill u get it where ur happy. Instead of glueing it in.. make your next box with an aero port, they are easy to swap in and out, I bought like four 6in ports from parts express and u can add length to them easy or shorten them.. I don't use them anymore though. I went back to slot port once I figure out the tune I wanted

So when you lower hrz does that mean it won’t hit high anymore?

Nice video. I actually think this is a good idea. But the quality of the wood really makes a huge difference in sound bro. I promise I was so scared to spend money but once I got a good quality birch box and a few other custom boxes I was hooked! I can take a budget sub and make it hit 5x harder in my box than a standard prefab or even eBay “custom” box. You can build your own just look at tutorials. The internal tricks and things inside used with custom boxes is insane. Internal bracing helps, internal corner inserts to help redirect air. Also having all the cracks and seams inside box properly sealed Makes a big diff too. All brand new boxes I get I always use liquid nails or silicone or something to seal every seam and corner inside an out. Also I seal around the terminals too. Painting wood boxes and sealing them is a good idea too and helps humidity and moisture not get to them. I wish you could feel the diff with that sub in a custom birch box

Is there any vids on tuning aero ported prefabricated boxes

Do you remember the exact measurements for that piece u cut

Great vid

I'm building a box 48"x15"x15" , birch wood is 3/4" for 4 fosgate 8" subs, how big should a port or ports be?

Did you ever have an issue with this box blowing apart with big subs?

At 2:01 is your woofer separating? Look between the 2 screws on the bottom when paused.....

Great system. Nothing better than LOWS! You‘ve got the groundwork to run two of those Rockville Destroyers which are unbelievable! I bet that one is enough tho... Could you meter how much power you’re throwing at it? I want to know how the same for my Lethal Injection 12” connected to a Wolfram 2400 but not going to spend money on an SMD tool anytime soon.

After seeing that coil, I don't think your sub is going to survive much longer. I'm glad you like it and put out these video's. After all the videos of Rockville subs blowing up I'll never buy one.

Man, u skipped over the best part. I wanted to see how the hell you secured that port piece.

Do you use a line driver of some sort? You need to boost your audio signal from 4 volt to 9 volt. The clarion eq is a must for bassheads.

What is the name of the program or site to get those calculations please?

does this apply if the sub is facing up

How will it sound if you tune it to 20Hz?