Hofmann's Iron Law: A Better Box for Better Bass!

Learn more about subwoofer design here: youtube.com/playlist?list=PL3Aot9dMXzXZ21MXAzvirEx…

So over a year ago I bought a qbomb for two 10s. The box is huge and tuned to 35hz (I've checked specs and done my tests and yes it's tuned to 35hz). I uploaded a picture of my setup banging on a facebook bass group and holy shit, I was told I was dumb that my box was way too big and that my subs were clipping blah blah blah. I ran those two 10s in this box for over a year with zero issues and it banged! Now I'm using the same box but with more beefy subs and it still sounds incredible! Moral of the story, don't listen to haters on fb or youtube

"Why is there so much math?" Because math is how you understand and predict the behavior of the physical world.

On a side jag... One of the smartest guys out there, Ol' Albert Einstein, once said he didn't need to know everything, he just needed to know where to go look for it.

This is one the very best in recent times and most interesting audio related YouTube videos I’ve ever seen. The back story on Hofmann and others was excellent! the side stories from other YouTubers… so good!

just recently I've been interested in building my own sub enclosure but don't just want prefab quality and performance. very much appreciate how you make your videos educational and fun to watch. thank you so much for your hard work!

Two years old, just saw the video, and another incredible audio treatise! Thanks for this Hofmann presentation!

I like to use efficient drivers so that I can keep the power requirements reasonable. You can actually make a system that sounds good without needing a ton of power if you choose your driver's properly.

Fantastic video! My Acoustic Research 12" powered sub I've had for around 20 years means so much more to me now after learning about Hofmann. Thanks!!

I'm building a full sound system with my buddies, and we just picked up two Eminence NSW6021-6. This video will definitely help us!!

I was going to comment about getting around Hofmann’s Law while the video was playing. You did a great job explaining how easy it is today to achieve extreme sound pressure at low frequencies without a huge box.

Great video! Keep up the fantastic work, love watching your content.

Great info! I appreciate that you provide the why behind a method so we can apply it to our own ideas. Thank you!

Passive radiators can actually be more efficient than ports when using high power. Passive radiators don't compress as much if you're using a small enclosure that needs a long skinny port. You can also tweak the frequency response. You can save a bit of space if you build a box that can get low, but has most of the efficiency from 50-90 Hz. Another way you can save space is by using thinner box walls and regular thin bracing. Baltic birch allows you to build thinner than MDF. I have an enclosure that's over 3 cubic feet and the box walls are 3/8" thick, but it doesn't flex due to bracing. The total material use goes down, therefore space, although it is more tedious to build. L section metal braces are the least space consuming and thick chunks of MDF the most.

This is an excellent video Justin well worth anyones time kudos.

Hofmann was obviously an intellectual GIANT!!!!!!!! Very impressive and informative video!!!

I’m soooo glad I found this channel. Soon as get caught up I’ll join for the min amount anyway to help support the channel. I need this information so it’s worth a tip to me.

Great video with good information. For me personally the math is fine and not even complicated at all. The video style is very nice as well. I liked the different shots between your talking!

I love your channel man its great content. Keep up the good work.

Great video brotha. Keep dropping the knowledge on us we appreciate it.