After watching you do the maths with the imperial system, I really really love the metric system!

@mwermink7620

6 жыл бұрын

Tommy Grønvold I was about to say that.

@That_Handle

5 жыл бұрын

Tommy Grønvold , Was thinking the same thing in the early 1990s because all measurements I had for driver spec.s at the time from my sources here in the US used inches, feet, etc. Wasn't long before programs were written for the ol' Texas Instruments TI-8x graphing calc.s for executing conversions at any given stage of modeling coupled with some capacity for basic Thiele-Small parameter work - early shareware. After that, the early internet had a couple fellas sharing their spreadsheets / (browser-operated? ) programs somehow for doing all the previous as well as additional calc.s for various box shapes along with results for port length(s) , overlaying/comparing response curves for different drivers or a given driver's option within a number of different config.s while affording push-pull, isobaric, 4th order and 6th order bandpass boxes when they were popular not to mention an included sinewave generator will settings for a sweep within a given range. The advancement of calculating and unit conversion tech has been wondrous. But, when at the end of the day the lumber is sold in units of inches and feet... it really is much ado about nothing for indigneous.

5 жыл бұрын

WOW!! Doing imperial calculations on a Texas Instruments calculator, that sounds like double the work for double the trouble... ;-D I worked with surveying in the late 90's, some of my colleagues used TI's to do advanced calculations. The method to crunch numbers with those was a nightmare to watch, backwards and special functions all over...

@Dashcam_istanbul

5 жыл бұрын

I saw your comment after I wrote mine. Gotta love the metric system :)

@brianborell4469

5 жыл бұрын

Many subs in the US have the specs for Vas in cubic inches. SO...

Thank you mark for showing us how the spare tire sub woofer enclosure is done.

Thank you for showing this!! So happy to see this all come together!!

I love your channel. I'm a lifelong HiFi nut, car nut, love DIY and workshops and am a physicist - you have great, quality solutions. I love watching your thought processes and seeing your experience. Wish I lived nearby! :-) All the best, Rob in Switzerland

Focal for the win. Have a kx33 in my Jeep and love the quality and sound it offers.

Way back in the day I was thinking of doing this, but ironically I got a flat tire...having just started a family and only 1 car, I decided to actually keep the spare, and build around it. Built a hinged box with hinged lid that was flush with the floor, but also 35* in the front since the rear seats were angled. Sealed up the bottom and sides, but cut hole in bottom of box to allow magnet to fit in tire well. Hit 120 dB and Q factor was on point! This is by far so much more awesome tho👍 Thank u for making this amazing video sir!

Sweet! Can’t wait to see it finished.

Your work is amazing .

Your work is amazing. The attention to detail is crazy good. I plan for my builds as well but nothing like you execute. Thanks for taking the time and effort to show others! This is just the sub box....WOW!

@CarAudioFabrication

6 жыл бұрын

Thanks for watching! It's guys like you that appreciate what I am trying to show that are the reason do this! Thank you!

A thing of beauty. Nicely done.

Amazing! Your thought process, work ethic and presentation skills are amazing.

Flexing that engineer mind in this one! This was a lot of fun to watch.

@CarAudioFabrication

6 жыл бұрын

😎😎😎 And this one isn't even that complicated, remember the Jeep box? 🤤🤤🤤 Watch it here: kzread.info/dash/bejne/gaBhqpJ-cqi1ZcY.html

Fantastic! I'm looking forward to using this technique to put subwoofers in my rear deck lid. Love the videos!

Thanks for these vids mark u sure got talent man im planing on doin this in our grand cherokee for a steath box its get to learn how to measure circle sub box volume Thank you again

thanks for yet another build very informative as always

Great job! I love your videos Mark! My take on the oversized top plate is to completely cover the wheel well so nothing will fall in between the outside of the sub box and the wheel well walls (say that three times fast).

Best build so far nice luv it

Been waiting for this video for 3 years 🤗🤗🤗

It’s beautiful.

Great to see you back on the project train!! Looking forward to seeing how this turns out. I'm actually planning a full install for myself at the moment, so I've been going through all your educational videos to choose the equipment and design the system. I want to hide the amp and LOC in the spare wheel well, but keep the spare wheel - aiming for a hinged flip-up amp mount like you did previously. Exciting times ahead! Keep the great content coming!

Focal rocks! My mains run a pair of Focal 7k415's along with a pair of TD90K tweeters. They give awesome response from 45 to 22kHz. When coupled to my subwoofer I get a system response of 23hz to 22kHz at -3db. The roll off of the sub is pretty flat with a system Q of .81. That gives me 20Hz and below at an audible level. The system is awesome, great imagining with all the data coming through the system. Nothing is lost lie some speakers which have muddy bass response that colors the sound.

Very insightful as always. Thanks Mark i have learned alot from your videos.

Always a great video and detailed explanations. All others take notes.

Looks awesome man! Nice video!!

great.And i love the style of your videos. great explanations. verry easy to understand you, and that for a german guy. thanks a lot thumbs up

Great video!!

Wow Mark, looks great! Excited to see the end result on this one :)

Appreciate the tips and tricks.

I have a 99 CR-V and the spare is on the tailgate with a empty spare tire well, this is exactly what i thought about doing. Watching this gave me the extra push i need to get ahead and start it.

Great work man

The baffle is larger because 1) it will help with the sound 2) it's aesthetically more pleasing and looks like it was meant to be that way 3) stops small junk falling into the cavity between enclosure and wheel well. All the best, Rob

Excellent work👌👌

Great video, Mark! Looking forward to seeing the end results on this one. :)

Awesome work mare

Awesome video. Surprised this channel hasn't blown up. Production value and quality is astonishing !

Been awhile since installing but i enjoy your videos.

Great job man

that would an awesome spot for fiberglass work

Man oh man. You teach us so much. Thank you. I still dream of having you do an install for me. I mean I do it myself now but you’re on a completely different planet. Ahh a man can dream. Lol. Good work as always!

As far back as I can remember Focal has been a great quality name. The math for the money is well worth it in the build. Great build and video. I’ve seen a build where someone used a spare wheel as an enclosure for a 15 in a Volkswagen bug. Not sure if it was built to spec, but it looked cool at the time.

Wow! I need this for a 2019 Mustang!!!

That's was a awesome video. I've made my first subwoofer box in the same location. After a lot of in and out of the box it finally sounds great

Love watching this method. I have only used the fiberglass approach for spare tire enclosures. The math part always intimidated me but you made it very easy to understand. As always, thanks. Btw I will be contacting you again soon for another one of those awesome enclosure designs.

@kimjorgensen24

6 жыл бұрын

You are so right. I always just 'winged' the volume 😄 But last time, I just got one Marks finished box designs 👌🏼

@brianborell4469

5 жыл бұрын

More people should watch and follow these ideas. He shows how cylinder volumes are easy to calculate. The laminated ring construction method is an easy way to to fit an enclosure of a known volume in any odd shaped space too. Wish I could give C. A. F. 2 thumbs up! 👍👍

Can I buy this man a beer for being a god among audiophiles?

@CarAudioFabrication

5 жыл бұрын

In a way! (very few people do this, maybe one or two a year) www.caraudiofabrication.com/support

This is what I need for my 18' Mazda3 hatchback with one change. I want to keep my spare tire. I went to a local shop and was told they could do make the sub box but it might now sound good.

Man, you're a pro

I support you Homes. Even though I can’t afford to Patreon right now your supporters still help you out as much as we can. You’re a staple of the community more than crutchfield

I can't wait to see the next video great job on that spare tire box oh and your videos are awesome lol

There ya go. I've seen a few of those builds using acrilic and vinyl with led back lighting. Waiting on the outcome of this one

Great video . Waiting for next part with complete build and sound test.

Great job :)

Great video Mark. I think you may have made the final baffle oversize to bolt the enclosure securely to the floor of the car. If I make an irregular shaped enclosure I use sand to measure the volume. I have a plastic measuring jug that I use to pour the sand. Keep up the great work. Best regards Rob

Ive been waiting to see a build like this. Ive seen some hack jobs but this is serious level business. Awesome work man, cant wait to see the rest.

I would totally pay this guy to wire my car for audio. His work is so cleaned . One of the best on KZread when it comes to car audio.

@CarAudioFabrication

6 жыл бұрын

Thanks! There are many people around that still take a ton of pride in doing things right, but don't expect them to be "cheap". As you can imagine doing things right takes time, and time is money.

raw talent

@CarAudioFabrication

6 жыл бұрын

Doing my best, trying to improve one build at a time. Thank you.

Always a great video, i need this for my BMW 750i 2018 model

Very nice work! My guess is to suspend the cavity from the baffle since the round portion is not the same exact shape as the spare tire well and to keep it from rattling against the sides and bottom.

Golf with Fender Audio has the subwoofer tucked in the center of the spare tire well With the tire in it. It sounds fantastic, but isn't much larger than a half cantaloupe.

Like from Russia!👍

@_BangDroid_

6 жыл бұрын

From Russia With Like 😅

@user-yt5vf6hq2s

6 жыл бұрын

BangDroid 🤣👍

@tatialo37

5 жыл бұрын

From Puerto Rico to Russia 🇷🇺 Saludos amigo!!!

That math brought back some memories 😂 but I love your videos man! I'm starting to build a sub box for my Miata.... Wish me luck! 😊

Dam dude u got some skills.....

@MayzDayz007

4 жыл бұрын

Dude has some tools

YOU ARE THE BEST!!!MORE SUBS....LETS GO

Your math skill is sick bro

i think its to lift yp the box from the bottom of the spare tire well to prevent any unexpected rattle and it will fit the trunk carpet

Hi Mark. Just wondering what your thoughts are on the use of fiberglass. I have done a similar project to this one using a flat circle base piece, a mid ring and a top ring. Held it all together with MDF upright joiners and then glassed it all in outside the vehicle after covering the rings in a stiff cardboard to get the wheel well shape. I finished it all off both inside and out to be smooth then added my top panel with countersunk speakers. I find that fiberglass gives a lighter enclosure but still really strong.

piece of cake :-)

The top is bigger to take up the Unlevel space in the trunk that the factory pics had. Gives that its always been there look

seems like this would have been a good opportunity to do this the way you said you would do a box differently, in that one video recently where you talked about an old build and how you would have done it differently

The oversized panel will be easier to secure to the vehicle, maybe even with the factory mounting points.

those focal subs are high. I remember when they came out in crutchfield

Just a quick question. I really like your videos and I've been wondering what your day job is.

Something like this would be perfect for my mustang

Good approach. I'm interested. I will subscribe. But although in English I don't understand :) - Everything is clear without words :)

I made a spair tire 15” ported and made 140db

Thank Great video. Is fiber glassing dead for you. Because I see you stacking more often or is stacking a better option whenever possible. I also saw the video of your earlier build the Green Monster would you stack that as well if you were doing it today

I am going to do THIS!!!!!!!

@CarAudioFabrication

5 жыл бұрын

Do it up!

3:03 My math game is pretty strong (when it comes to this level) but thanks for explaining this to folks Mark, because 5 out of 3 people do have problems with math. My guess on the oversized baffle is in conjunction with the beauty panel to protect the subs and also maintain some usability of the trunk for cargo/groceries after the install. Looks awesome Mark!

@CarAudioFabrication

6 жыл бұрын

Lol, that math... :) and you are close. I'll reveal more specifically why soon, I want to see what other people have to say. Thanks for being a Patreon member!

@markwentz8332

6 жыл бұрын

i'm also curious to see what others think about your design choice and eventually it's actual purpose. Glad to be a CAF patron, at least you give your folks some early/extra content to enjoy besides their name written on a wall #DDFAFO LOL!

@jayinmi3706

6 жыл бұрын

5 of 3, huh? I think those mathematically challenged people own a bank.

@markwentz8332

6 жыл бұрын

? not catching the reference there Jay.

@SundownCamry

6 жыл бұрын

JayinMI his math so strong he's excluding himself

Awesome video as usual Mark! Would a fiberglass bottom work just as well as the wood in this application? I figured you could roughly find the volume by filling the area with water, pumping it out with a shop vac, then weighing it. In this application, all the fiberglass would be curved and touching a solid surface which would minimize flex. Make a sufficient lip to glue the wood top to and voila you've saved yourself a little weight and wood. I think my idea here is pretty sound, no? (no pun intended XD)

speaker pron at its best

I like to see a rta readout vs a typical sealed rear firing set up

Googly eye subwoofers!!!

Awesome job like always man but wouldn’t you have saved more material if you’d cut half circles instead of full circles? It would make for a more efficient cut-out pattern in the mdf sheet and then all you would have to do is stagger each layer so that the half circle joints would be perpendicular to each other and maybe use some staples or finishing nails along with the glue just for reinforcement?

I wanted to do something like this but with a 4th order bandpass using the spare space for the sealed section then making a false floor large as the entire trunk for the vented section, but the speaker/amp are not that good so i didn't want to go trough the hassle of building a 4th order, maybe you could pull off something like this!

I came here to learn. I learned that my goal isn’t important enough to do it the right way😂

What Would Doug Do? Always love the show Mark!! Andrea is your Russle.

@markwentz8332

6 жыл бұрын

It doesn't matter what Doug would do, LOL!

That'll fit in my GXP

@CarAudioFabrication

6 жыл бұрын

Love the GXP. Best sleeper ever.

Hey quick question for you, I dont quite have enough room in my trunk to add the speakers I would like to and meet the box volume requirements, would using a shape like this distort the sound in any way if I added a larger rectangular piece to the top to increase my volume?

Are there any disadvantages of the round design compared to the regular box style?

Congrats on your wedding!

Very useful and addictive video. i actually watch this a few times already. Is it a good idea to use just one MDF as a top mount over the spare tyre well (and no need any body / sidewall). If I can find a way to secure it, then I got a much larger air volume box.

I’m just going to guess and say the larger piece is to one help with fighting vibration as well as stabilizing the enclosure itself,, and it will also prevent anything from falling into the wheel well and shaking along the side of the enclosure itself, the factory stock barely covers the well, or possibly making it larger to make it easier to attach a beauty panel to It??

Had my L7's like that in my Integra. They slammed in my opinion.

Mark, I really struggle with math; always have. I sure wish I could have you or someone else figure my needed box volume for a P2 Rockford Fosgate 10" sub woofer if I give my dimensions.

Greetings from Ukraine!

whats your take on nitro amplifiers specifically the 2400 watts

Well done. BUt you could have just installed a single twelve inch, higher power, and use rockwool or foam bedsheet insulation. The two tens are about as loud as a single twelve, but with more mid range. The soft foam fabric will allow deeper bass.

love u xD

Can u still use the trunk space once the woofers are installed?

Great build. Anybody selling these tubs prefabbed?

i subbed just to see the focal driver in action