How Do I Tune Subwoofer Enclosures? | Car Audio Q & A 

I have to say that I'm a bit surprised that you never talked about stuffing a sealed box with polyfill to tune it as that's one way to help a box that's too small (not way too small mind you) behave more like one that's the right size. Then there's the option of placing stuff in a box that's too large to displace air volume and make it smaller. closed cell foam sheeting (insulation) works well for this.

Yep, still confused

Why do they keep you in a cage?

So you tune the port how?

So what other apps or software do you find especially useful when preparing to build a box?

yes i understand ..get the specs of your speaker say 1.50-2.0 for vented and the 1.50 is regular bass while you get the 2.0 its gonna boom but how far off can you be say you get a 2.10 will it be forgiving? i know too much air space bass sound muddy while to little you hear the box itself so box bass

Hi, I have a few questions in regard to the bass response graphic: 1. Why is so important -3db and why do you want to have a flat response? 2. -3db is the point where you want to have the desired port frequency? 3. If I make a box with a peak at +3db that means I'm gaining +3db output at the peak frequency? 4. What is the difference between tuning a box at 20Hz vs. let's say 40Hz or higher. 5. When do I know that I'm at the maximum volume box of a certain woofer on the graphic. Thank you, I appreciate your effort.

hmm? I still do not see how to tune the box!.. I must admit it was an "open question" and the answer was an open response, next time the question will be: what are the specific steps to tune a ported box for XYZ vehicle?.. by the way I'm an Audio,video and security technician, you can do things the professional way or the do it yourself way.

So if you were to lengthen the port in that box. Would it lower the tuning ot would it raise the tuning because the box would be smaller? Or would it cancel itself out and stay the same cuz the port was longer but the box was made smaller? Tia. Love your guys videos. :)

I remember tuning sealed boxes in the 90’s for SPL before ported became the go to. For 63Hz it was 1.25cf. 15” Petra Prowler. Anything below 50Hz the sub sounded like crap but at the tuning frequency it ripped your head off. The second harmonic at around 126Hz was deadly as well but they ended up putting the 80Hz cap on Termpro.

Wow, that was NO help at all.

What programs do you use for box design?

I see the Box designer and Builder decided to not sign his signature, but leave his shoe print in the bottom of the Box instead. My favorite part.! Pretty good video if you understand airspace but I understand some of the confusion for some people. Its simple terms, not technical.

best website.. i love the free shipping

I build a box for 6 12’s. Come to find out I tuned the box to 18hz. Is this good for low bass or did I tune box to low?

More often than not, most prefab boxes will be tuned very high. I assume this is for efficiency of the output. However this also creates spikes in your response. If you have a prefab ported enclosure that's too small and tuned too high, it won't have a Similar response to a correct enclosure. His program automatically calculates the tuning frequency requires for a given size enclosure. If, however, the enclosure is not only too small, but also tuned too high, your response will be boomy on high frequencies and nullified on lower frequencies.

i know this is an old video but i have an important question .so i am building a dual 18 inch sub woofer enclosure using the KAPPA PRO 18LF-8 which has a usable frequency range of 38 Hz - 0.7 kHz and a resonance of 32 Hz.what frequency should i tune the box i am building to ,32Hz or 38Hz ?

Best box for two 8” massive hippo subs clean! loud! tuned low as they can go bass!

NEVER use the ts per ammeters that the company provides. Always test to find your own. That is a piece of advice that Tony D'Amore gave to the industry.

So if I need a 4 cu. ft. Ported box for a single 15” the manufacturer recommends a port displacement of 0.52 cu. ft and woofer displacement is 0.21 Cu . Ft. Do I need a total of 4.73 Cu Ft or 4.21 Cu.ft?

Building a similar box to that one should the woofer be mounted closer or further away from the port exit in the baffle?

I built a box and didn't account for woofer displacement it is a single 12 inch basic woofer will it suffer?

How about this, I give u my spec & the space available for my speakers can you Figure the dimensions for with ur program

Hello Allen. I have a question. I have a pre fab box (that my old co worker who is an installer) that my JL 12w3v3 is in. Me looking online, I found out it has a tuning frequency of 38 hz. That’s one of the reasons I don’t like pre fab because I think that tuning frequency is high. It’s ported and it’s 1.75 cubic liters. How can I get the frequency lowered without getting another box? I told him in the beginning btw that I would pay him to build me a box.

I have 2 Alpine type R 2ohm on a Alpine 1000 amp and I don't know if it's the ported box or the subs but it doesn't give me a really good bass and after a while the sub start to get cooking why?

What tuning program do you use I also build subwoofer boxes

This was an awesome video! There's one question that I have that the Internet has yet to answer... I'm doing some research on building a 1x15" bass guitar cabinet, and I'm trying to figure out what frequency would be best to tune to. I play a 5 string, and my lowest string (B) produces a frequency of 31Hz. Should I tune my cabinet to that frequency? Or would it be best to go lower (~25Hz), or perhaps higher to my E (41Hz)? The frequency response of the woofer is 38-3k Hz, not sure if that would be needed. Ideally, I would love for my woofer to produce the fundamental of my low B, but woofers that can do that, at acceptable THD, SPL, and Sensitivity, are kind of hard to come by.

What happens when you play below the port tuning ? The sub unloads. Also he should explain why its important to have proper power ported vs sealed and the the benefits of a sub sonic filter for ported boxes.

Is 38 hz a huge difference to 43hz? How will the music differ?

hi, im planning on building a ported box for 2 15's and with the data sheet i got the box is tuned to 40 Hz but i want the tuning to be around 35 Hz. how do i lower the tuning? the box is already max size vor my trunk. do i need to make the port bigger or smaller?

I got 2 small ish wedge shaped sealed boxes with 500w 12" subs and its true they have great sound at around 45 to 50hz, enough to make your ears do that funny thing, below 40hz it's loud but not as loud as that

Hey man thank-you this video helped a lot but I was wondering. All the boxes I am looking at on the site seem to be tuned wicked high. Like 42- 43hz. With small enclosures and larger ones isn't that gonna sound a little too high for say an eclipse 8812 sub?

101 video series sounds good!

i have a woofer speaker 18" rated power 1000 wats, 8 0hms impedance. wud u give me any idea about the size the lenght,width, and the deep of the box to get good performance?

You showed lots of cool stuff on the Term-Lab software but you did not answer the question. How do you tune a subwoofer enclosure?

I did not know you had to add the port volume to the actual airspace for the sub. Good to know

make speaker boxes based on speaker specifications?

I made a 1.9 cu ft box 18inx29inx6.5in for a 12in sub with a depth of 4 29/32. Its ported with a 1in hole in the front. Recommended sealed is 1.25 cu ft Recommended ported is 2.0 cu ft Sub is a Rockford Fosgate Punch RFZ2412 Any suggestions? Any

Bro i hv a infinity kappa 120.9 plz tell me the dimensions for the boxand the size of the vent from which i get a deeper bass from which bass goes very far thank u very much

How much is your snuff bill each day...looks like you are stocking nuts for winter

Thanks so much! Very clearly explained and shown! Nice shit dude

What kind of turning frequency could I expect out of a sealed 0.80 cf enclosure from a 10 inch subwoofer?

if one measurement of a piece for my box is supposed to be 13.99 inches can i go ahead and cut it to 14 inches?

I have NVX jad 800.4 on two sets of polk components. I used sound deadener in all fours doors I'm trying to get a cleaner sound any suggestions?

Hi, I'm kinda new to the basshead world. I have 2 jbl gt5-10d's, and would like to know what the best box dimensions would be for the best sound and performance.

How do you know what box would be perfect for your subs?

different cars also determine the frequency as well . it can make it higher or lower depending on the cabin size of the vehicle's . me personally I like ported boxes becouse i can change the tuning too different frequency for music and SPL

I would like to design, engineer, and build a Low end big punch sounding Bass Guitar Speaker Cabinet. Preferably a 2×10 configuration. What software should I use to start with? Thanks.

Some1 help me please. I just built my first box for a Tahoe. It’s for 6 subs. Anyway, I accidentally built it to be a 18hz box. Is that good or bad? Good for bass? I haven’t tried it. Just curious if I wasted my time building this box. Box is... 48” wide 36 deep 25.5 tall Port is... 3.5” wide 24” high and 25” long 3/4 mdf 18hz right?

06:26 'Process' he meant to say, not "progress"

i want too build a box for 4 15'' kicker comps in my 1996 jeep i need some help ?????

I have 2 15's, and I have to roll my windows down for them to sound like they aren't clipping, but I know my amp is tuned correct. Is there any way to fix this, or at least avoid the clipping noise while listening to my music loudly with my windows up? I have a 2002 nissan frontier Crew cab and there's not much room in it, so I'm sure that's why it's doing this. I just want to know if there is a way to avoid it.

I want to tune a box to 25Hz but it would peak at 37. Does that mean i cant play around 19Hz? Or is it normal that the peak frequency is a little bit higher than the tuning frequency ?

What's it looked like with 4th order?

hi IM putting 0gauge power amp wire in my 99 expedition and was wanting to know how much of a difference will it make

how do i measure the volume of my box and if the box is to big do i loose preformance?

Two 10inch subwoofers in ported box tuned to 35hz or 32hz with a 500 amplifier ... ???

Would u please name the programe name u use plz.???🤗

What computer program are you running

I have to Skar evil 12’s and have no idea what box i should put them in. I need help assp

Any better bass with a probox?

Can't wait because box build my rack my brain

Great work Allen looks like you are having fun without all the bull crap from Soundman.

Wsup Allen u guys hooking up with Scott bulwalda and what of the helix psix dsp

Good video!

sonic does all the sound come from the port or the subwoofer itself?

Hey commenters. You can down load tunning calculator app to figure this out.

What program do you personally use to build/create a subwoofer box?

This tune woofer guys are thinking all day like woom woom woom woom xd

Damn bro, you couldn’t change the port size on the program to show us the effect? Wtf?

When does the series come out that you mention?

Are two 15" Memphis m3 mojos with 1200 watts going to each one to much for a 2014 Ford fusion

So where is better ported or non

What? So a "Boomer Box" provides less deep bass? Confused.

I have a 10in Orion hcca what do you think a good port size

Hello, I made a 14" H x 16" L x 35" W for Sundown 2 SA 12". Is that good for those subs?

Just saying custom box pay a shop to make your box we have software to make it. Just buy a box made closest to speaker specs you won’t miss much for small differences. Audiophiles will disagree unless your in competitions it really doesn’t matter that much. Your sub won’t blow up like they want you to think.

what would happen if I play a mid range of midbass speaker at its Fs frequency

I have a sealed sub box for two 12’s and it pretty much became a printed box because when I got it, it was missing the wire connectors on the back so each enclosure basically had a port, I’m not looking for good quality just loud bass, would it increase the my bass to cut the holes bigger they are round right now and about two and a half inches across

name for the program pls

Really now,,, This aint so helpful to be honest 🤦🏻‍♂️

When I was running simulations on hornresp, it seemed to me to get more consistent SPL responses when total volume including the port was preserved. Adding a bigger port to the same sized box area sans port made it louder, as if it was in a slightly bigger box that was tuned the same. It could be the hoffman iron law at work. What will make a difference is the bulk of material of which the port walls are constructed. This is where thin walled plastic tubes have an obvious advantage: they don't rob as much volume as an mdf port. You can also see that it will take less material to use the box walls as part of the port, than do a port in the centre that is not supported by the box walls. If you can brace a subwoofer correctly, you can use very thin wood. I have a good performing 12 and the box was made of 3/8" plywood. The exterior dimensions are 18" x 18" x 22" to enclose an internal volume of 3.5 cubic feet or therabouts in an enclosure weighing 25 lbs including the neodymium speaker.

What program was you using?

What will I need in order to replace my factory radio with my Kenwood KDC-152 radio I purchased.

Is there anywhere i can get this software for free or a alternative?

How to measure a port and tune

But look guys if you feel like somebody is kicking you back use 4 inchs pipe and 8 inchs long for 10 inchs subs and 12 inchs also for 40-50 hz.. for SQL 4 inchs pipe and at least 20 to 32 inchs long and the end of the pipe it needs to be 1 inch close to one of the wall to get 16-25 hz

what program did he use?

Ooh

Ok so how do you tune a port?

Box tuning can be accomplished by taking Trigonometry, Geometry, And Algebra all over again. Have fun.

I got two 15" kicker L7 in sealed box, how do I determine what my hz is? I don't know the size of my box if that's required I'll have to get back with you

cvr 15 inch kickers in a sealed box was dope have cvx 12s in a ported box highly disappointed

Dang first answer to the first question was pretty shit.

You should rename the video, you explained nothing on how to tune smh.

Is that my box u guys built for me

¿Fumar mucha piedra muchacho?

its not just the size of the box that tunes a sealed enclosure ,,,its the thickness of the wood used...this is always overlooked .if the wood is 3/4 it will sound different than if the wood is 3" thick and its not always the thicker the better ...#truth

Dude's cap has sensitive eyes and needs sunglasses indoors

Lol