Ok but the original title was going to be "OMG the ONE TRUE SECRET about BASS that the ALIENS TOLD ME!!!"

@@devinlsheets_alphasound Alien tech! I knew it! That explains how you can get such a large driver in such a small box.

We actually do have some of the smartest viewers in the industry btw. Our message inboxes are full of amazing insights and thoughts people have after watching our videos, and it gives us many ideas for future content. Just the way youtube works though, we've found that unfortunately the slightly clickbait titles perform a bit better. You should write a complaint to youtube about it.

@@half-whit5535 yeah that's what he told us too, hated the whole experience. but the condescending ego genre is hot rn with the algorithm so...

@@half-whit5535 Wear Pokémon outfits

i used the local library in 1989, Sony SQ Quad, all i needed was a sub and centre speaker then. Oscilloscope did the rest. Kept the speakers, only updated the DAC. Math then is the same, you only got better codecs now.

imagine that, im not even a sound engineer and i have all this random knowledge about sound engineering because i watch random youtube videos in my free time

I purchased my first speaker building book from radio shack in 1983. Later the loudspeaker cookbook. Then speaker builder magazine. Learning how the various woofer loading in cabinets mimic electronic filters were invaluable lessons in understanding the marriage of electronics, acoustics and physics of loudspeaker building.

Rip RadioShack and frys electronics

Was gonna say the same thing. Even at local libraries, finding pro audio & studio engineering books wasn’t easy unless I found a way into Portland (25 miles to Portland is a long way for a kid). When I did finally go, that was where I discovered the old (RIP) Powell’s Technical Bookstore which was separate from their main store and only had tech books. But even then, we didn’t have these great videos.

Share it with someone!

​@@devinlsheets_alphasound unless you want to get the two guys to rap the info to the muzak LOSE IT! it totally ruins a great vid!

He is correct on most of this but he needs to rethink how he describes how a port works. He is kind of correct and kind of wrong.

Ok

@@marxman00 ?

Venetian Snares fan?

@@vargdog6602 Isn't everyone? !

My thoughts exactly...

everything has its profession to get the best out of it. i like to describe speaker as a racing car. no matter what speaker brand you have, you never get it to perfect for the most part. just like how you put your bass in certain of the room, you get the harmonic effect and one side of the room sound louder than the other side. could be the desk, the chair or computer that distort the sound of the bass. you centered the home theater speaker perfectly where you sit, but the person who sit 4 seat down from you wont theat the perfect 5.1 or 7.1 surround sound experience. just like racing car, each car is tune for specific track once you take it to another track, its not optimized unless you tune for it again

@@BlueRice It just can't be only me who demands more than one Subwoofer? I like four of them and under the bed should it be enough room for a couple who work together as you watch movies laying down... Just be careful they do not redusece eithother...

I think you did good before this however... Basic knowledge and confidence in the process still got you through the job.

Glad you approve lol

Ironic e?

That's why some subwoofers can literally shake multiple neighborhood from a mile away

@@DigitalSubset no it cant shake anything mile away. Not even with subwoofer. This shit is midbass and it only plays music good

@@fazer5994 I said some can. My system can and is heard a mile away when they’re turned all the way up. 18s in a Tahoe will do it too

@@DigitalSubset yeah you can hear it but it wont shake anything

@@fazer5994 lol *edit: I see he did write "literally" so disregard the lol

This was definitely an interesting video. The spring stick box thing was physical representation of something that I saw in a paper from Mazda. Using resonant frequencies in an automotive intake to get more air into the cylinders. Changing the length of an intake to have power over a wider rpm range instead of a single peak rpm. It works. I think the Porsche 959 was the first to use something like that. In the diagram it showed using the air as a spring. A mass with a spring on both sides, the mass also being air, the spring is air inside a runner. The mind blowing part is when an engine valve snaps shut, the air stops and builds up on the back of the valve, then springs back into the intake which can help another cylinder with an open valve take advantage of a micro charge. Every little bit counts.

@@pgtmr2713 correction: First patent for variable geometry intake manifold was by Daimler-Benz I believe, in the late 50s. Toyota had their T-VIS which came in 82. My old 88 Mazda RX7 also had 3 butterflies, two smaller and one larger. Not all of these use pressurisation from resonance, like my turbocharged RX7, which wouldn't care, pressure increase due to resonance would probably be negligible as the turbo gave 0.8 bar.

@@JakkeJakobsen Yeah but the T-VIS was dual runner. More about keeping up the velocity. Same as the Taurus SHO. Not sure about the old Benz, but I was thinking more along the lines of something mass produced. Good on Mercedes if they got there first. Never really got into the RX-7 beyond "rotary," but good to see they were using all they could. I had an 88 MR2 4AGE with T-VIS, and have a Mazda KLZE V6 with VRIS. Collected all the intakes for the KL out of curiousity. Similar layout to each, but the only thing they share are the vacuum actuators. At low RPM all runners pull air from the throttle, mid rpm a valve opens and a cross tube opens up so the 2 banks can share some air, High rpm a second tube opens, so all runners can pull from the throttle and 2 other shared crosstubes located close to all runners effectively shortening the path. T-VIS had a 8 runners to 4 cylinders one runner shut down at low rpm increasing the velocity in the one runner for each. Badass 1.6 liter engine. :-D

same for me. This kind of knowledge sharing has and deserve its place on yt.. //My sub specialization in EE studies was electroacoustics at university and been building boxes since my childhood.

@@pgtmr2713 true, thank you very much for sharing and for this video

Thank you!

This is REALLY interesting! Can I make a request? Ditch the background music. I found it got in the way of the content. And I really enjoyed the content! Thank you.

Thank you! We always wonder if anyone actually watches these things. Glad to know people are enjoying it

@@devinlsheets_alphasound I will definitely keep watching them .... they are excellent. You really know your stuff and explain it really well 👍

Good things come to those who wait! Part 3 coming soon

You’re very welcome. Comments like this are highly motivating for us to continue producing such content!

Share it with someone while it's still free! lol

only free crap here...Need headphones? or better codecs? you just don't care i see !

I built 11th order transmission line boxes (2) way back in 1990 for 2 Earthquake 12's. In home use with coils. Amazing bass back then even on low power indoors running on 50 watts rms per channel from a home receiver. Love transmission line boxes.

Unfortunately most of the music is crap thou..

They are amazing!

@@devinlsheets_alphasound which model is it?

Geo M

Just by stuff off amazon , and make cabinets yourself ...

Learn cabinet making. My dad was a carpenter. So I started building boxes when I was 14. Built my first pair of A 7's when I was 16. I was always fascinated with horn loaded enclosures. Get yourself a table saw and all the necessary wood working tools.

@@jesse75 I’m currently studying at university, but after that I’m planning to dig into the subject more. Thank you for the advice, I appreciate it!🤝🏼

Thanks!! The binaural mic is in stereo, but has a low-pass filter on it set to 200Hz because that’s the only important information in the demonstrations. Everything else you hear is from the clip-on mics we’re wearing. The FFT is SignalScopePro

@@devinlsheets_alphasound So sad the software is mac-only =/

That’s a very interesting observation, would have to ask the engineers at NEXO. It seems that there would be less pressure during the construction, and whether this is what results in less air turbulence is something they would have to speak for. Our understanding so far has been that the constriction results in a more laminar airflow, where the air along the edges is forced to continue to travel through the port as quickly as the air in the middle, reducing the possibility of incongruent speeds between layers of flowing air, which causes turbulence especially near the edges in a straight port at high air velocity.

Venturi effect.

We will have to ask the Nexo team if it’s the Venturi effect which results in the difference in SPL. Even if the Venturi effect is taking place, our intuition suggests that the main reason the SPL increases is because the shape forces the air along the outsides to flow as quickly as the air in the middle through the port length. This reduces the possibility of multiple “layers” of air moving at different speeds which can cause turbulence. Perhaps the Venturi effect, if it is happening here, also somehow contributes to this laminar airflow effect. Maybe this is a good excuse to make another investigative video!

❤ Thank you ! For great bass information . I'm still trying to comprehend it.

It's the same way Light so-called travelS it literally doesn't have a speed because it doesn't travel

It has a heatZ simple as that just like sound

lol hope they were free classes

Everything on youtube is an ad for something.