How does a port work? Myths Busted! #subwoofer #port

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Chapters:
0:00 Introduction
0:50 Myth #1
1:20 Air Has Mass
2:45 Resonating Air
3:50 Port Gain
5:25 Port Tuning Frequency
6:30 Port Airflow Demonstration
6:50 Cone Excursion
7:50 Myth #2

@Toid

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[THEK]

I started a business a year ago building custom bass boxes with 0 prior knowledge but I studied your videos and utilized all the knowledge I took from them. Now I have a solid reputation for my boxes performing perfectly

[easydiy_beginners]

OMG 10 mins of non stop technical words, need hours to understand the basics of the port, wonderful explanation!! thanks for sharing the knowledge!!!

[bennettshapiro]

Great description of the beauty of the band pass design. I have rarely heard it so well articulated. Just a pleasure to watch and listen to. Some of us are old hats with some of the science, but hearing it explained succinctly and clearly is still a beautiful experience. Thanks for that.

[wally]

Wow, super impressed! I've never seen so much correct information condensed into 10 minutes on audio as this. In a sea of audio half truths this was refreshing to see not a single misunderstanding of the physics/engineering of how ports operate. My background is live sound engineer/speaker builder/car audio way back when and I spend more time on the math and physics of audio that I care to admit and you hit all the bases. The only thing I would of added would be some of the pro's/cons/trade off's of ported enclosures. Things like efficiency, size, distortion vs group delay, phase, f3, harmonics.

[nunyabusiness]

Great video!
You covered a ton of material in a very short period. I started studying the body of work by Theil & Small in the early 1980s. I began plotting freq response charts and then building a lot of "tuned" boxes back then. Amazing how much speakers have changed since then. Would like to see you do a video on passive crossovers as well. Most folks do not understand a simple 6dB/octave let alone an 18 dB/octave x-over or when to use each.

[garethfoulkes]

Love the bass use to enclosures in the 90s on my metro

[Clobercow]

Great video and great explanation! You're explaining this at next level and I'm certainly going to link this video when people start with the subwoofer myths!

[jamband]

This was a great video. So much information packed into a few minutes. No fluff just the facts and it was explained in simple enough terms you don’t have to be a engineer to understand this information. This is why I follow this channel. Thank you

[dannylewandowski]

Just ported a box this weekend after watching your video! I added 3 smaller ports instead of one large one due to the size of the speaker and allowable drilling on the sub box. It sounds amazing. as I added each port 1-2-3 it got better sounding each time. I did the math and found the correct ratio to surface area and volume of the cone in order to convert to smaller ports. I see a lot of air but barely see the subwoofer speaker moving. I would say this is most efficient sound I can get out of my setup. Tuned to 59.7 hz.

[muttBunch]

Beautifully detailed ❤️. I’m a sealed box kind of guy and have been into car audio for over 25+ years. I remember long before “bazooka” tubes, Kicker actually made speakers back in the late 80s that were of an oblong igloo. What was amazing about that design was it include a port, but sort of a hybrid port/sealed enclosure as it came with a port plug. I’m surprised I haven’t seen them since.

[riazmoosa]

Next level stuff... Love this videos... Everything Audio makes sense for a sound fanatic as myself... Keep it up...🤩

[jimbobdobbs]

My issue with ports- is you come to find out half the songs sound like crap and you find yourself playing the same 5 songs that sound "great" in your range, not the music you enjoy- IF you listen to actual music. Thats why i am going back to sealed box this build.

[ryanmichalski]

You’re educational videos are really well done. Your teaching style makes topics easier to understand.

[jimmyjam]

Hey thank you I needed this video I'm doing a spl build for next year and this put everything into perspective, very detailed 👌 been following you for a year now and always something to learn 😀

[rpaip]

Excellent video! One of the best and most comprehensive overviews of bass reflex systems 👍

[cmosdaboss]

Wish I knew all this 20 years ago, so many years of bass wasted. Great video bro. Lots of people don’t know and your video help people build an enclosure the right way before making a costly mistake

[slvice]

Dude! This was so educational, I learned so much just now! Thanks for posting this.

[stout]

So much awesome info. I always built boxes to hrtz by size I would degree the main port tunnel. From opening it up to a smaller opening or a very small opening to a larger opening. It works phenomenally well and just a few degrees makes a huge difference

[johnenglishIII]

This was excellent and helped me a lot to understand a bunch of stuff. Thanks you so much.

[lordhostile]

Wow alot of good info, I never saw a port like a passive radiator before but it makes sense the way you explained it. thanks!