Ported subwoofer box explained 

The best explanation I have heard on this subject. Clear and incisive, well illustrated. Thanks for sharing.

I appreciate the lack of overly technical jargon. If I wanted that, I wouldn't be clicking a thumbnail that says, "what does this hole do?" 🤣

best explanation of speaker encloses in English from someone that's not English

Yes my brother , I just get a lesson there. I always build my boxes to the right cubic feet according to the size of the speaker I am using . But you mentioned some things that will further improved my sound quality. Thank very much and continue to keep us informed.

Thanks for making a video with a clear and concise explanation of bass reflex.

Thank you for your videos! Truly appreciate them. I am a very low-level noob, but useful even for me.

Thank you, I looked a lot in YT before finding the answers to my questions.

I must say. This is a Gem. A video made with extreme passion and has a lot of value. Really Simplified the concept. Bravo.

Bare basics. Simply awesome. Thank you.

Thank you i learn something from you thank verry much

Thanks a lot !!! All your videos and your online course is also awesome !!!

Excellent explanation. Didn't even know I needed to know this, but now Im glad I found this video :)

You are a brilliant pedagogue/teacher!

First time I understood the whole thing. Kudos 👌👍

Thank you for your very nice explanation!

Don't ask me why I understood this video so well. Thank you sir, I got the main idea now

This is very informative! Thank you very much

Great and clear explanation.

This is the best explanation great video!

helpful tip when watching this turn it to 1.25x speed or 1.5x it helps

Best explanation I ever heard 👍

THAT WAS SIMPLE! Thanks, that was great!

Really good video so easy to understand keep it up 💪🏾🔥

Frickin finding help in RU-vid then suddenly you came and solved my problem thank you mr stranger ❤❤❤

Very nice explanation

Man you good Just what I was looking for ✌🏽

I really enjoy this content

Thanks for the best explanation thanks a lot❤️👍

Excellent explanation. Greetings!

Beautiful bravo always helpful you r a real utuber

Amazing video and explanation.

Good explanation!

Great👏, well explained.

Very Very Good Explanation. Thank You !! ..Please do a 3-Way DYI Presentation.

Thanks, good info. I had no idea thats what it did

great video. Thankyou !

Nice explaination thank you nice 👍

Best explanation...thank you!

Really good explanation.👌 If possible please make one video on passive radiator enclosure. There is not a lot of information available about passive radiator enclosure.

very good... thank you

So useful information sir ❤️

WELL-EXPLAINED VIDEO.. 👌

tanks. that was great video

You are a good man 👍

Very helpful

This is good video.. thanks

I learned something different I even know , thanks

nice explanation sir.

Awesome !!! Thx you !!! 😎👍🏻👍🏻👍🏻

Ah yes, finally, a video about this, thanks a lot ^.-.^ 😄

those popping sounds popped my ear drums

Great video! Never knew about tuning a box! I built a box 10 years ago but dont know what frequency it is. Its 15"x16"x17" with a 1.5" x 14" rectangle port on front/sub side. Port wall stops about 2 inches from the back. Running a old school 12" l5 solobaric. If anyone knows i would appreciate it.

👏👏👏 well done g

Thank you so much

Great video! Can you explain why on yamaha hs sub the speaker is facing down, and the hole is facing forward? How does it work?

очень хорошо объяснил, мистер волк

I learned something 😁

Yeah. I liked your video and subscribed too.

Great vid. Finally someone who see and explains things from a practical point of view without over complicating things, micromanagement. --I am trying to use winISD Pro. In the port section, it has width, length, and "1rst port resonance." Is that the port resonance/tuning? --And, if I run sealed, do I lose some SPL?

Hi there Can you create a video on box calculation for a ported speaker to hit Lowest Fs

Would you please explain the field coil drivers. The dimensions of the coil and wire gauge, l.v.r calculations for max magnetic flux? Thanks

Well explained 🙏. If you dont mind me asking.. I don't know much about these things but I've recently installed sound in my vehicle & in doing so, my uncle gave me a subwoofer that already has a enclosure that is ported, very similar to the sketch of the ported one in your video.. sounds nice but we've once blocked the port and it actually sounded a bit better for me . I was wondering if me blocking it from now on will somehow harm the subwoofer or not ? Thank you

Sir What is LF 7 and LF 9 cabinet Can you please make a video on it

Buddy have you tried open Baffel Would like to see some videos from you on that

Please explain transmission line. Thank You!

Hi. Your videos are pretty good. I got a couple of questions 1-What is better - tune port to higher frequency or to a lower one than the Fs? 2-if able to tune below the fs, how much lower, 5,10 or 15hz lower than Fs? Thanks.

I like to port a little below audibility for a little more punch, no cancelation, a little more efficiency, and a Lot of cooling to the voice coil.

Only 7000 views? This video should have more.

Have you tried doing this with an isobaric enclosure like LINN use? And looked at the bass extension obtained. I wonder if there are calculations you could for ideal volume between the two drivers and the volume behind the rear of the two drivers

Have you ever looked into Cathedrals and CHurches designed to a resonant req?

Now i am ready to rip the guts of a broken active subwoofer and turn it into a passive one. Thanks for the "my way" explanation.

Thanks dude really appreciate that you appreciate we’re not all rocket scientists , thanks for your knowledge brother 👍✊

Thank ypu for the video. Just having this doubt, am having a dual klipsch R 121 Sw sub in my home. The gain is about 50 % and avr trim at - 8. Is it ok to cover the port with plugs or using some socks to get some good punch. Mine feels bit boomy some times. And if its designed to wrk ported , any problems if i restrict the air flow ? I knw big brands having port plugs and all. Thanks

Dude I appreciate the simplified version. I'm sitting here thinking to myself if this is the simplified version I'm absolutely fucked

This is best

I have a question..do you have any Speaker Box Plan for a Hard Kick Bass?? Cause here in the Philippines we're using Cerwin Vega box and Modified Cerwin Vega box which is also called L36.. Do you have any suggestions or advice to make it sound better and Make the bass more harder? i hope you'll see this! Your reply is much appreciated, Thanks in advance!

in car audio which is best bass..aeroport or slot port?

The port size should be such that the resonating air mass stays laminar. Turbulent airflow starts at circa 11m/s so with maximum displacement = max permissible power input you then need to check port rear flow velocity. The other crucial point is the point of tuning. The Fb should be close to the Fs of the driver and not permit the max permissible cone excursion to be exceeded as this risks the voice coil former smacking off the rear plate if the pole piece and damaging the voice coil plus increases distortion. The box should be sized to the t&s parameters of the driver to ensure Fb is +/- 5hz or so of Fs in free air. You can alter the box “Q” to play with port alignment, the ideal being BB4 alignment for lowest group delay and phase shift. Typically this involves a reduction of Q by introducing damping to make the apparent box volume greater than actual which increases the acoustic line of the vent tuning beyond actual vent length. Its a clever means of generating greater depth of bass more accurately than conventional tuning but isn’t to be confused with extended bass shelf tuning. I normally employ bb4 tuning using this method for rfc speaker designs with a tuning point of Fb slightly above Fs. It also removes bass peaks at tuning by altering the alignment for more linear bass response. Not easy to get to grips with as anyone attempting a diy ported design can attest to. Sealed boxes are far easier to design for if going the diy route.

Ola amigo si usamos el máximo litraje ejemplo 70 litros para un sub 12 y sintonizar ah 60 hz o 65 hz para tener un pico de frecuencias muy alto si es posible para tener un buen spl en una sola frecuencia como competir en spl usando cajones grandes entonado alto gracias saludos desde Colombia

Hahaha the guy with excessive technical language, good one and so true, good job dude👍😀

Thank for the video! I had to speed up to 1.5x though

I want to make 10 inch subwoofer box, pls suggest everything to get sweet bass in my room size 10ft x 11 ft. to watch hollywood moveis with 200+ RMS ampli.

One thing i forgot to mention that i am planing to make one. Once i understand the calculations, I will try make one.

Hi Marius, can you explain why the woofer moves less, when the port resonance kicks in? I don't get the physics behind that. I mean, when the port (better: the air in the port) is moving vigorously to gain output, then it has to be pushed by something. So it's somewhat counter intuitive that the woofer moves less in in the ports resonance frequency. Thank in advance for an explanation!

Nice explanation. 1:10 only the sourround and the voicecoil spider should flex. Not the whole membrane. I think you did it like that because it's much easier to animate. [I'm not concened about it i just wanted to give meinen Senf dazu. Greetings from Germany ^-^)

don't worry about ur critics...... we all have them... just carry on with ur good vids :) (and get rid of the lil chirps ... u are an audio expert, wtf r they doing n your video?

If my woofer Fs is 35hz can i make a box for 20hz and get this low frequency?

Very good video, thanks. The one thing I don't follow is, at around 8:00, you say that a larger diameter port will increase the resonant frequency of the box. Since a larger diameter port will contain more air mass, and in a mass/spring system a larger mass typically results in a *lower* natural frequency, it would seem that the opposite would be true. What am I missing?

Question: can I use multiple "holes" on the box, instead of a single tube? For example if tube required would be 10 cm long and 3 cm diameter, can I simply drill 5 pieces of 3 cm diamater holes on the front baffle which is 2 cm thick? I guess the resonating “air mass” would be similar. Yet no one uses holes! Why?

I have a bass reflex speaker box but it hasn't got any lining/damping. If I take damping into the box it Will be better or it's worst for the bass reflex?

does tunning frequency and resonating frequency is same or different?

Make video about on passive radiator.

Can i port a sealed box and invert my subs??

I have a 6 and half inch driver, box dimension is 16(depth)x7(width)x11(height), driver mounted in rear panel downside on width side and port on front panel upwards suggest me the port size, length and tube dimeter coz flare will increase the port size bit more than diameter of port tube

As far as my 3 year old grandson is concerned, it is for putting all his "Bluey" and "Sesame Street" fugurines in.

If i keep my hand on air hole or aero and stop airflows of subwoofer will it harm the subwoofers speaker!?

What happens when there are two ports of different resonance frequency in a single box?

Nice video. However, the popping sound whenever you pop some icons or images is painful to the ear, both in terms of its pitch and volume.

👋👋👌👌

So basically if you wanted to achieve true infinite baffle at 20hz you would have to have a rolling billboard as long as a semi trailer and just as tall? Gee..you would knock down all the power poles and street lights..really not cool. It doesn't matter if your content is grossly simplistic or overly exaggerated, you make it possible to understand. You are an excellent teacher. How do you spell your name anyway ?