Which enclosure is suitable for my speaker 

I've literally been struggling to determine how to pick what speakers would work in a sealed enclosure and this was the best guide I could find anywhere, thank you so much for this. I'm so glad that I found your channel and I have subscribed and will be perusing your vids to gain all the nuggets of knowledge I can!

Big thank you for explanation! Really great content!

well explained..always waiting for your vodeos..thank you.

Thank you very much for the information in so simple words. Grateful indeed.

Excelent video! Very important information and with a very clear explanation ! Just what I wanted to understand about TS parameters. Now I do understand what the numbers means! Thanks

Very good insight. Thanks!

Explanation is clear thanks.

Excellent video Marius, greetings from México ✌️

What a treat! Thanks!

Great stuff thanks

very informative video. thanks

Ty for the information

You're going to be successful watch!

Very much helpful and informative video. Please make a video on subwoofer cabinet designing.

exact ce cautam. poate faci un video si despre forma incintelor sau care e jmecheria cu subwooferele cu difuzorul jos, cu fata la podea.

Helpful thanks

you are doing a Wonderful contribution to audio !!!!

Thanks for your highly informative video, I have to confess, I was very surprised to see my comment as the trigger for this video and I can't seem to feel a great deal of gratitude for your efforts. Thanks and I look forward you next video about loudspeakers. BTW do you have as much to share about amplifier design as you have on loudspeaker design.

Muy buen video!

Great video, I am about to finish the DIY T/S test cable you described building in one of your videos (great one) and I can't wait to run some measurements on some drivers I have laying around. In your last video you outlined four factors that need consideration with regards to optimizing box volume to driver Vas, Qts and Fs as well as EBP. As a DIY speaker builder, I would like to know how to determined the optimal box volume, once I have all of the relevant T/S parameters. Let me simplify this further - Once I got real T/S parameters of my driver, I want to plug in the numbers into some online program (preferably free) or formula, and get the optimized box volume according to acoustics suspension or ported design (depending on the driver, of course). Regarding your low subscription numbers - Unless you come up with some viral video, this process takes time and effort. It requires having more on line videos appealing and getting (hooking) people with shared interest. Thanks for your videos and knowledge sharing

Such jewels of information on this channel and only 4k subs. Its unfair and criminal.

The best video on this subject! I got my answer why my calculated volume is coming with a negative sign. Now, what should be done for small speakers with Qts value more than 1.2?

Thanks for your advice but I love sony home theater sub bass. what type of enclosure they use please explain... And I have TB subwoofer W5-1138SMF can I design box like that

Ok hello nice to meet you my name is Harold . I have been playing with audio from 8-10 years old . At 47 now every thing has gotten so tech now but I’m enjoy the learning , not to good on mart but as far as experimental yes just to see the out come ! Had a pair of Rockford p1 10” 250rms 500 peak playing with a nippon tubo 12 “bass cannon” the numbers does not match 12s it’s a 1.4 cf tube with a 18” long port at 22 sq inch . I have mounted a 10 half way seald aginst the top ten rear one faced up with the other faced up so isobaric sealed 0.7 between them 0.7 ported then test sound descent not outstanding. But I had a sealed 12” 1.2 cf square box that I turn the tube into it playing now two tens isobaric into a sealed box very big change it really needs just by listening to it the 1.2 ported and behind the 1st 10 then sealed .07 the other 10 then sealed plying into 0.7 kind reverse every thing I got! Of course there was no planning or thinking it was just to see what isobaric does never been close to one before or listen to one on,y pictures on the net ! And I’m not sure if you can or not put isobaric sealed playing into sealed I’ve seen it ported between and to the out in both ways ant together also seen it seald between but never playing into sealed! That brings me to the ? What order is this I’m calculating 4th order isobaric band pass with bad cubic feet numbers it has a good tone and hits decently hard but the low bass is killer accurate I found out one big thing isobaric helps control a lot of distortion that happens even with out the front sealed box I could tell a difference oh I’m running a kenwood in dash kickin-x704 with a audio control epecenter off 110ac converter into a Behringer km750 concert amplifier in a 20x16 8’ wall sealed garage “it’s insulated and plywood all 5 sides setting on 6” concrete” tanks fo all your information I’ve got a skar skv2500 and ax15 sundown audio v2 wanting to build areo port or 4th,6th order for the rear of my Toyota 4Runner I like what you shown here you got my choice down to areo or 6th order I currently have it in a sealed 3.0 box with a 10 k rockvilleRPA16 concert amp it rocks dude it knocks stuff of the cabinet the walls and refidgerator I also run the epecenter on it and half volume I can tell that’s plenty they both perform so well I’ve never had any thing with this much power back to the 4 runner I’m a welder/fabrication expert with Steele descent with wood I’ve placed an extra 220 amp alternator with a belt configuration added a old water pump pulley to my bottom drive off the crankshaft on the motor with 1 battery under my hood 650 can deep cycle marine battery extra volt gauge and light inside for this extra charging system that will have a 750 xs power agm motorcycle battery and a cap I’m thinking 5-10 fard I’ve got breakers and fuses for all of this will have 8” ds18 component set in doors with Rockford punch 200 on tweeters and arc audio 900.1 kar series on the 800watt 8s so I kinda need help with an space that’s 40 inches wide 24 inches long and 24-40 tall. I could go 2x15s if I want to I think they are1500 watt subwoofers what do you think I’m almost there I’m gonna use birch plywood they say it’s stronger and lighter than mdf/particle wood and with 2x15 subs how about never seen face to face isobaric sealed in the middle of the box with two different size ported chambers tune 1 real low like in the 20s and the other side in the 40s that’s what I’m aiming for I’ve even thought about building half of the isobaric loading and have it were latter on I could build the other half and sub then put them together to achieve that isobaric 4th or I guess it could be tuned to 6th order by porting the middle ? Let me know what you think I enjoy this knowledge you share and highly appreciate you for teaching I need to learn more before I can make the judgement of my box problem I have ask for advise from two others on line one no reply the other guy just throws out a basic slot port box I could go on a box building site and do my self the one thing I know for sure I want areo port or ports no matter they are more efficient but the grafts don’t lie you can see the big change in the lines from a slot port to a areo port I have always built seald boxes I’ve just recently got back into this audio game heavy the last year and half and seen all this new to me ports and the technical part of it is way above my head I’m learning slowly I want a good sounding over the broadest band but really low fq bass I think I can get it I know there’s a trade off but I know I don’t want a SPL build we’re it’s only good for 1 fq I’d like to have the range of that 6 th order you did with the 10 “ JL we’re it came in early in the low hz and hung in there to 80 and didn’t drop real bad till after100hz I’m thinking to myself if I hit around 100 hz on my highs decent and 20 to 80 be really killer I’d be plenty happy

great video ! your new subscriber ! please make a video about DIY HIFI tube preamp ! thanks in advance !

Can you do some videos on 6th order bandpass....specifically series tuned 6th order bandpass...and how important is the ratio or what should the ratio be

Like the video alot- I was wondring what are the parameters used to determine the size of an acoustic suspension, ported and Transmission line design?

hallo i put my parameters in a calculator and it says i have ebp 101.. a sealed box but my qts=0,48 below 100 ebp = selead.. what is your advice ? can i use the midbase driver in a sealed box ? Mvg Jermain

I have a 12 inch midbass horn box how do I work out the vas

I'm subscribe dude

El Cavalo likes your videos Mr. Lupetta :)))

Thanks brother. So it's best to use 3 type of BASS when setting up a sound system ??? Because all 3 type is relevant to the different types of MUSIC u will have to PLAY . !!!!!!!! Don't u think

How do you work backwards? Let’s say you want to upgrade the drivers in your MTM speaker cabinet to better ones. You would measure the inside volume of the cabinet and the port, but then how do you determine which drivers would fit well in that enclosure? Thanks!

Hello, I was measured T&S parameters of 30w local speakers when I put DC resistance and diameter that time one message was shown me DC resistance is greater than impedance value , so can I do for that message to eliminate that error and get correct value. I am using REW software.

I just have a quick question building a golf cart for my son we bought a free air subwoofer thinking that I can just cut a hole in the side of the cart put the sub in it would that be efficient enough to be an intimate baffle

Do back reflections from the back of the box actually cause problems for a speaker driver? Does poly fill really help? I have read only natural wool is useful. What about adding diffraction panels ? B&W nautilus was designed to remove back waves. I have never heard a pair, have any of you?

Hi your 620th subscriber here your videos are really easy to understand my question is what are your views on a quater wave transmission line enclosure for say a 2 way design and can u elaborate different types of transmission line designs and their applications and pros and cons. I would really appreciate your input on this. lastly what qts does a transmission line preffers

Thank you very much, but can you explain which speaker for passive radiator enclosure?

Can you talk about headroom?

Sealed or Ported calculation is different it is fs divided by qes so a speaker with qts 0.52 fs 65hz qes 0.62 recommended ported in your example you recommend sealed. Which one you recommend in this case?

Nice video explanation. I'm interested in building a small, around 27 liters speaker cabinet for a full-range SB Acoustics SB20FRPC30-8 and I found that Qts is 0.45 and the Efficiency Bandwidth Product (EBP) is 83. Does it mean that this speaker driver is more suitable for a ported speaker or is it ok for a sealed speaker cabinet?

Thank you, great video. I've a question, my speaker (selenium 8MB4P) has a Qts of 0.76, an Fs of 105 Hz and my EBP is about 120. For Qts I need an infinite Baffle, and for EBP a bass reflex, what kind of enclosure could be the best option? And how can I do an infinite baffle? Sometimes I think I have a rare kind of speaker 😅

Can you make one video explaining how to apply QE and boost the lower octaves of sealed subwoofer please ... Let's say a sealed subwoofer is rolling off at 30hz, and if we want to push it down to 20hz with EQ, how we can do?? And pros and cons, and limitations etc .

To build box for it

Hi, my speaker has a qts of 1,3 What enclosure should i use? :)

is there any logic in production of speakers fro a specific company? Lets say do they think .. you are going to pair the XT25 BG 60 with the HDS-P830874 or is just random? based on marketing reasons? why for most brands are no suggestions on enclosure, best match or crossover?

I have 4 12s sealed on a ranger xlt what do you think should be done for the best Sound quality because I feel I reached a limit after 2 12s I have no clue what would sound best I want to make two 6th orders with a isobaric setup or should I make one big 6th order using Rockford p2 at the moment thinking about p3 looking for the least amount of mechanical noise! I also want that chest hit

Hey can I access that box modeling excel file anywhere?

Can I somehow calculate or measure Qts of my driver?

When they say le 1.4 mh for a speaker what does that mean

can you test professional audio please. theres a big hole in this field. great work.

Hello sir i have eminence alpha 12 american standard series 150 whatts speaker Parameters are as below Qts is 0.77 Vas is 121.5 liters Ebp is 56 Fs is 49 hz So how much quantity of box that is encloser should i do Means lebght and height and widht Calculation formula can you send me sir I hope u will tell me Plz sir plz plz plz I hope u will reply sir

That’s JL Audio’s secret. Low Fs (21Hz) and high Vas (124 liters). So you put it in a smaller box that raises the F3 to 31 Hz. 31 Hz is acceptable in a car audio enclosure.

I have to build an enclosure for my motorcycle.. 2 6in P16 speakers, in a custom enclosure that will fit in a 15in x 8in x 6in area... Ugh

interesant cu qts-u asta ... Dar daca difuzorul e facut pentru cutie inchisa si canta la 60 de hz ( de exemplu ), in reflex canta la 40hz ... Alt battle :)) !!! Daca vrei sa scoti perfectiune, construiesti 3-4 incinte diferite si asculti care canta mai bine, pe gustul tau :D Am vazut ca ai facut asta ... Ma asteptam ca cea bass reflex sa sune cel mai tare, dar bass reflexul de multe ori pacaleste ... Am vazut ca ai pe masina incinta din fibra, cum suna fata de cele pe care le-ai facut pentru acel test ? Mai bine, mai rau ... Sunt curios :)

Some subwoofers gives a lot of punch , while others pumps lows, how can we decide what they do based on the T/S paramiters

Question, why are people making enclosures that look like a long maze? Is there a benefit for a “long path port”?

What about EBP? Rockford P3D3-10 recommends either sealed or ported. But, winISD Pro and other calculator indicate EBP of 44, thus should run sealed only. So then why would Rockford say and give specs for a ported box design? --I thought that you always run the speaker at double it's resonant Hz or higher. But, no? So, I can design box for ... say... 30 Hz, even though response spec. is not given by Rockford. Or at least I can't find it.

hmm, would 0.37 be okay for a sealed box?

why car speakers dont have ports in doors

If the qts of the speaker is 1.23 then

Please define Qts and Fs deeply

Doode. Awesome material. Can you please make you voice 6db higher? I can't hear shit while watching your videos in subway with maxed out volume. Your voice is very low pitched (:

chico menos teatro y mas inforamicon.

You give nice information but those beeps broke me. Can't keep on watching.

Great video. Want an idea or a video to make. Take a junk unknown subwoofer. Go through the process and make it great. Nobody goes through the complete steps.. spit facts and numbers but never prove it. I've read all that stuff but still isn't clear. But countless videos boast all the theory, but no real practical. Why did you choose that size, and build it. Test it, prove your theory. I love your videos, but you asked for a topic

Implying an enclosure is even necessary or desirable. Guards, take him away!