Learned more in this video then months of searching for answers. Reason why you are in the top five favorite you tubers.

Literally 10s of thousands of audio and bassheads need to watch this video and all of Barevids other videos. He explains everything so well that you become aware of other aspects of how the system operates that he didn't even touch on. Exceptionally well done, Sam! You are the Yoda of audio and Amps!

This video teaches you more about how box design works, power vs SPL and impedence rise than any others that i've ever seen.

Fucking hell. I will give it to this dude. He manages to explain horrifically technical terms in a manner that anybody can understand. Well done, young man. Well fucking done. Hell of an informative vid.

This video gave me a HUGE "lightbulb moment." I obviously didn't just become an expert but I understand this SO much better now. Awesome vid, thanks a million!

Reading some of these comments made me feel like i was stuck in an episode of big bang theory. I think he explained the topic at hand perfectly so those of us with less than electrical engineering degrees would understand.Your boy sheldon blew my mind with all that x,y,z talk.

Important to note as well regarding the woofer impedance graph. As you said effort goes down and that causes impedance to go up so one might assume wattage would plummet and make a dip in output. Not so because the increase in woofer efficiency offsets the drop in power. Excellent video btw. Well done.

I've watched every show on KZread so someone could explain to me box rise you are down hands by far the best video to explain it you actually did it for me thank you so much

Bro,thank you so,so much.I just learned SO much that I didn't know over the years about this specific term,I just used to build big boxes,with wide ports tuned low,and give the subs a shit-load of power without them even getting hot,but because of what I just learned I can actually start thinking very differently about my future builds! Thank you very much for everything!

Simple explanation to a difficult to understand topic!

This is the best explanation of impedance rise anywhere I’ve looked. Thank you for clarifying.

Twice now you have changed my life. Firstly using a speaker to check for distortion which blow my mind and now this. What you do is put the puzzle pieces together but the trick that you have is to find the puzzle piece in first place.

@anglerandy5736

2 жыл бұрын

Clipping or distortion

@philmissy1

2 жыл бұрын

@@anglerandy5736 Go fishing mate, clipping is distortion.

Love this video explanation! I've "skim read" explanations of 'box rise' before and didn't fully understand. Neither did understand why some people were obsessed with getting rid of it. You actually did much better and condensed the info to make sense. Thanks for the info! Gives me more ideas on how to tune/design a box now. If only I had the time, money and skill to build them.

I started playing this video as background noise then stopped it when i realized it deserves my full attention. Fuck this guy is smart.

Coils are essentially a dead short until a field is generated also. This was a very helpful video, thanks Sam

The knowledge man, it's oozing outa you. Not only better ways to explain things to those I know, understanding better myself thankyou

Absolutely the best video on impedance rise! This video answered questions that I haven't even thought of yet😆. Thank you sir

Literally the best informantive car audio video ever. Well I've ever seen imo

very informative, learned more than I thought I will when I read the title! if you have time you should do more of this kind of videos

Dude you are awesome. Thank you for this video. I completely understood the way you described everything and I finally understand box rise.

this is the best explanation I've ever watch thank you for helping me understand to help better my designs in future

Great video. Now that explains why my Old school 500 watt Rockford Punch AB amp is more than happy being bridged to 2 ohms and hardly getting warm on my heavy magnet sundown U12D2's. All the way to Dartford and back today! Just 35 degrees C on the heatsink

Lots of great information here. I’ll probably have to watch again to catch everything

You know that moment when you've been trying to learn something for quite some time, you believe you understand but still question if you have all the pieces of the puzzle until finally something happens, the light bulb goes off, and will stay on from then forward. Thank you for giving me that moment. Been watching your vids forever, love it, keep up the great work. I'm still pretty new to car stereo and about to undertake my third and by far most important box build for my first 'real' sub. A PSI platform 3(hp) 18" with a Sundown SCV-3000d to push it. I believe my electrical which I've been working on for the past year should be up to the task. 350a alt, d3400 under the hood, 2/0 to the back xp3000 to the amps. I've got some 13 ply baltic birch ready to go but am struggling to commit to my first cut because I'm not sure this aeroport box I've designed is going to give me what I want (musical, low and loud). Do you do box design? I've all the ts params, and my proposed box design & port but I really can't afford to muck this up so I'd love to run it by you or would gladly pay for some on point box plans given my vehicle setup & space for box. Is there somewhere I should/could contact you about this? Please let me know.

@barevids

7 жыл бұрын

Ryan Jensen sure bro! send me an email spllab.distrouk@gmail.com

@RyanJensenSolkan

7 жыл бұрын

Cool man, I shot you an email, hope it all makes sense. Please let me know if I'm on the right track or way off base here and any other info you can give me! I can't wait to bang this thing.

@nitestrike1000

7 жыл бұрын

I must commend you for an awesome explanation ! You really took the time to break it down and not just crunching numbers and equations that some of us dont understand

@idocare6538

6 жыл бұрын

Same here Ryan except I had a light bulb go on in my head. =D

@treynathaniel4075

5 жыл бұрын

Is there a way to take advantage of the "returning" energy? One would think that if you could divert that returning energy changing it from a fighting stance to a helping stance you could be more efficient to say the least and it would no longer be resistance. It would seem as if returning "energy" should be able to be determined and used whether back into the amp as being helpful which would seem more plausible or back into the coil. Perhaps a set of leads that return to the amp making it more simple to return rather than attempting to monitor and or distinguish,said energy, or perhaps just a given amount to return regardless. Instead of just to the speaker,a set that returns to perhaps even a transducer or the like.

My explanation after recently graduating in electrical engineering Impedance of an inductor (which a voice coil is) is defined in phasor notation as the complex number Z = R + Xj, R being the real resistance of the coil (or "DC resistance") this is basically the Re TS parameter, X however is the reactive part that changes with frequency this can be calculated with the formula X = ωL (ω being the angular frequency (ω = 2*π*(frequency in Hz) and L is the inductance in Henries), thus the magnitude of the impedance of the coil is defined as the magnitude of the phasor or |Z| = sqrt(R^2 + X^2) essentially the coils impedance goes up with frequency because X rises linearly with frequency Now a voice coil becomes a lot more complex because you have the coil freely vibrating within a magnetic field this causes the coil impedance to very with not only frequency but also inductance as well, so X becomes non-linear, what effects the impedance plot is based around weight of the diaphragm, boundaries around the diaphragm, springs of air such as a box etc.

@barevids

7 жыл бұрын

Technologic awesome explanation! I wanted to go into frequency itself having a rising effect solely within the coil but I didn't want to over complicate this video, plus generally within the subwoofer frequency range this effect would yield negligible results. It explains the huge climb after 10khz though! :)

@wow1022

7 жыл бұрын

I just defined Z and said that X becomes non-linear due to the coil's movement within the gap Going back to normal inductors they do a similar effect of generating voltage when the current is decreased through it (causing the magnetic field to collapse and through Faraday's law a voltage develops), it's just a voice coil exacerbates it and shoots up the inductance when the coil moves a lot

@barevids

7 жыл бұрын

would sound the same as a box that was laid flat of the same size. The sound output of a box is dependant on the internal volume, and port area + length only. The external dimensions are irrelevant (unless youre getting really in depth with fine tuning things). A tall box is great for indoors as it doesnt take up much space on the floor.

@hyperdriverr

7 жыл бұрын

Also been to electronics. High xmax overhung woofer typically have more inductance and they are harder to get a flatter response from. Another factor to consider is the type of box. Bass horns make the impedance go up A LOT MORE since the horn is basically an air transformer itself. I was going to comment on thermal compression since that is often over looked but he covered it. . Now I can't feel smart talking about it. I like using lower xmax woofers (sensitive, flat response) coupled with higher sensitivity boxes, witch raises impedance and usually power handling too. Less heat for given volume, All this lets you use cheap woofers, smaller amps, less electrical upgrades, but LARGE WOOFER BOX. No free lunch.

@tomkocur

6 жыл бұрын

upload.wikimedia.org/wikipedia/commons/9/9e/Speaker_analo.JPG This is the schematic of what you wrote and it's also what box designing tools use for the calculations.

Learned so much. Thanks for the video bro. Car audio manufacturers should be all over recruiting you for their builds.

Awesome vid!!!! By far the best vid I have found on box rise. And this makes me feel better about my setup rising from 1.3 to 5.6 ohms at 34hz(my tuning/peak frequency). Thanks

@foley6939

3 жыл бұрын

SMD money and swag, Prices teeth, EXOs voice n energy, with this cats intelligence n give 0 Fs attitude! 🍻

your awesome man! love how you explain things, turn complicated into simple! learned alot from your channel. thx

I loved how you explained everything👍

Great video! Thanks for the in-depth explanation I've been looking for.

I hate the term "box rise" as well. I've always called it imp rise and tried to tell ppl it's not a bad thing. It just means your system is efficient. With your explanation, it makes even more sense now. You've explained things that I didnt fully understand and for that, I thank you. I subbed and turned on notifications.

This is some good stuff if you wanna musical box or not it pays off to open your mind before your wallet almost everyday you see some1 upgrading what they have to something else without understanding the woofer they have not matching the enviroment inside and outside the enclosure its an old video but appreciate you sharing the knowledge to a Tennessee guy like me!

wow that light diming ..analogy is so insightfull

I love your Channel bro ..... I totally dig the way you explain and make it comprehensible for some of the not so technical savy people out there.... I look forward to watching your videos, a truly great learning experience and one of the few KZread channels that isn't blasting out cheap plugs to sponsors... though with the way you explaine and do what you do, you really should have sponsors backing you...😉...lol just dont totaly sell out.. great stuff

Nice down to earth explanation, Thanks!!

I'm late to the game but absolutely wonderful explanation it gets rid of all of my questions thank you Sam

Holy shit... The way you explain things... There's no reason for any other videos on the subject from anyone else

Brilliant! Lots of good information here. Well put.

im gonna have to watch this a few times

Thank you so much. I just got my dream woofer 15 at sundown Neil, and I was wondering if I could wire it at 1/2 ohm. Now, thanks to you, no more questions… More vibrations. Aloha. Mahalo. Rooted to Rhythm

He is 12v magician ❤🎖😎🙌 the way he explains stuff here is beutiful to watch 🎖👊

Awesome! I LOVE your instructional videos.

brilliant video bro

love the enthusiasm ,,well done

I agree there is a ton of wild fluffed out info some good some has me lost. Great explanation I also saw some great sub loading unloading examples in the impedance rise subject. Very well done sir. PS Greetings fro Chicago IL :).

bro this is the best explanation of box rise ever !!! great

You are awesome dude! You explain things well & make sense...Thanks!

Woaw, what an amazing video !

That's why jl audio slash amps are awesomse!! The RIPS SYSTEM...

Bravo !! Thank for the info, best video Iv seen on the topic

Thanks for the info, I get it now. Wow, you a good teacher! 👍👍

Half way through the video atm but he does mean 1hz-20000hz (20khz). This is a good explanation for the beginner 👍

This helped me a lot to understand!Thanks barevids! :)

What a great explanation thanks😊👍

Just watch it ang I love it, this one of my favorite video. Subs. Thanks man.

This is awesome!

Wow man, this is a great video. 👌🏼

Brilliant video

Wow i just found this video and appreciate the information alot.

This is amazing bro

You've convinced me a sealed box is the way to go.

Thank you for explaining this I learned a lot more in this video than I have about how car audio works than my whole life combined. Your saving lives bro... lol well maybe not 😂

Good Shit! Broke it down,to the" T"...GOOD LOOKIN OUT! FOR THA BASIC WÓOFER FUNCTION.

Nice information buddy 💯👍👌💪

That makes sense, but correct me if I am wrong this only applies to The Sweet Spot frequency however music plays a whole range of frequencies so this would only be useful and decibel competitions seeing how loud you can get.

Box ride on impedance changes Subscribed now, BigDWiz sent me :)

Could you please do a video comparing and contrasting ported boxes vs passive radiator boxes vs sealed?

@yourmom-ii8ep

2 жыл бұрын

To port or not to port that is the question ❓

@GTILOUD

Жыл бұрын

Team sealed gang

great video

Wow mate that was an outstanding explanation! Can you do a video of how the amplifiers damping factor plays a part in mitigating the backwards resistance? Thanks

16:34 Yup It's All About Finding The Sweet Spot Of Mechcinal Vs Thermal For Getting Peak Output.

lots of practice with the fishing weight? Thank you for this explanation great job

you could mention that a stiffer spider would allow a sub to operate in a larger box. but really really good, informative video!

@sethh8892

5 жыл бұрын

Hypothetically that is true, but there is a reason that we have specific enclosures for each subwoofer. Just because something is "hypothetically true" does not mean it needs to be used.

So how do I know if the thermal capacity of a voice coil is reached? Does WinISD simulate this well enough?

Your content is so helpful. Appreciate you so much. Curious about creating a loud system with really high sq. What are your thoughts on different box designs and tunings in one rig? Like 2 6th order boxes with each port tuned to a different frequency to get 4 sweet spots with 2 subs? Is that a thing or no?

Awesome vid

You have some great information and knowledge. I'm just wondering now if my subs with huge motors are a waste of money. I do know that the voice coil impedance changes the way the motor force is generated (series vs parallel wiring for example). I would love to be able to understand this better. If you were local to be i would to to confess with you directly. Keep up the great videos

Wow very knowledgeable explanation video, I learned a lot. But now I have a question, how does spider stiffness come into play and what effects does is have in terms of having to push more power into it for it to move. Is it purely for bass tightness?

2 things.. could you use something like an exhaust cutoff to change port size at will? Also can you put some sort of diode on your woofer wires that prevent back feeding?

It clicked in my head .....thanks

Thanks!

Than you!

It seems like impedance wise, a front loaded horn is quite nice to drive as it has a flatter impedance curve than a vented box, and if fully sized, it doesn't have such a sharp quarter wave trough. The vented box has a lower impedance than the horn at tuning but higher most other places in the pass band. This means that if you try and extract maximum current capacity from the amplifier, you have to be more careful around tuning if bass notes spend a lot of time there. Also, using an excessively low Q (strong magnet relative to cone mass) with a vented box can produce a one note wonder. Why? Because the strong magnet can create a lot of pressure at tuning and therefore high SPL from the ports. The excursion peak is lower due to the reduction in power sent to the cone due to back EMF. The SPL is less simply because the woofer is moving less. There is less VOLTAGE based sensitivity, which although doesn't directly correlate to power efficiency, it does correlate to frequency response peaks and dips with a specific gain setting on the amp. Remember that video of the tiny woofer in the large box? It probably was a one note wonder due to the port providing a large efficiency gain that wasn't present elsewhere. Because the ears aren't that sensitive at 28Hz it was probably worth it though.

@barevids

7 жыл бұрын

Spot on my man!

How do I know what fq causes the most thermal rise? Suppose I'm building an spl and my vehicle has a nice resonance at 52 hz. Should I use a woofer with free air resonance at 52 hz?

could I ask you though, I want to get just good bass, not going for loudness, don't want to be rattling everything apart, just would like bass, now I've noticed in halfords that they can get good bass from the like 6 ish inch speakers they have to display the radios, I asked how and was told that it's because them speakers are in basically a large box. now I've been thinking about making a box to fit in across the rear footwell in my car to mount some of the same speakers they had in the shop, would you say it's pheasable that a large box for two regular size speakers would create a quality sound?

@barevids

7 жыл бұрын

No, this is a terrible idea sorry bud! If you want quality bass without rattling everything, you want a 6.5" or 8" actual subwoofer, in a larger sized transmission line enclosure in the boot, and just control the volume so that its not too loud for you. The frequency response will be excellent and very high clarity. Feel free to shoot me an email and ill be happy to help with the box design or even supply you a proper small subwoofer /amp to work how you want it to. spllab.distrouk@gmail.com

@Papa7Bravo

7 жыл бұрын

barevids will definitely send an email, it'd be of massive help, I've been searching to just get a good quality but in a compact kind of way, any help is massively appreciated.

What is a good guideline for square inches of port per foot of box volume? I tend to agree with 12 sqin for aeroport and 16 for slot port.

Awesome bit of info. The Ah ha moment for me. Thanks!

This video was F-ing awesome thank you so so much!

This is why I'm running 6th order box way more tuning

Bro you're my fuckin hero lol. You really take your time and explain in detail everything. I just learned something new today. Big thumbs up 👍👍

so if your amp is 1ohm stable .running it under 1ohm wont damage the amp due to box rise, is that what the lesson is ?

I got two Skar ZVX- 12v2 d2 12 will it be ok to wire them down to .05 with this amp ORION HCCA HCCA3000.1DSPLX, Class D Amplifier 3000 WATTS RMS 01 OHM?

Great explanation. Some of the same theorys for the possibility of free energy from a unity motor. If you have an efficient enough motor to drive a current generator like an alternator to then charge a battery that would run the motor continuously. Impedance rise is what could make it possible once the components becone efficient enough

you said bigger port right? now that's port cross section take place isn't? love watching your vid. gets a lot lesson

amazing

Thank you thank you thank you

Which is why I'm happier with my sealed 15 in my sedan. Gets low but sounds good up high as well. Although I do love a well tuned ported box sometimes (:

I am going to take the amp back what is a good budget amp for my sub I payed $400 for it would like to stay with DD thanks for the info

What happened to your boom box?

Great job here,ever thought of being a teacher? Low pay and a shitty audience are the rewards tho. You reach more people here tho. I remember hearing of a vent that was filled with dacron for lowering the pressure and resistance in sealed boxes,don't know if they still make them. Been being taught by you for years,and I am 65,thank you!!!!!!!!!!!

And would it help if we lowered the ohm load