Why your subwoofer smells & burns it's not clipping / dirty power it's just you being too demanding

[@RandyRossundercaste]

I've been an audio engineer for about 18 years now. I think about the physics of sound everyday. Recently got back into car audio and see a bunch of KZbin channels talking about clipping amplifiers. Something always felt off with how people describe it. This is the first guy to actually explain it the way it should happen that I've seen. Thank you for cutting through the bullshit!

[@fxgamer-11yt]

coils dont care if its a dc or ac signal clipped or not power is power if you over power it then it cooks and coil get hot not just form wattage but amperage two and clipping a amp increases amperage on the output of the amp

[@UltimateDIY]

You are basically the AvE of speakers. Awesome channel and great info!

[@RobotUnderground]

Wow, thanks!

[@coltonwilliamson2647]

Okay.. You cuss frequently, talk shit about people going to school and repeating what they've read but don't understand, you explain shit like a normal ass person and I fucking love it. Then you said you're about 3 days over and I about choked on my drink 😂 you're my fucking spirit animal sir ✊️

[@RobotUnderground]

May GONZO bless you with the creamiest of ropes

[@DillonHering]

Dude this is the funniest fucking video ever while at the same time being super informative and answering every single question I had...props to you man, please keep these kinds of videos going with all sorts of audio topics!!! The world needs more of this!!! Props brother 👏

[@heavy12inchsub79]

You're the only guy with the coolest stacks of magnets

[@RodofAllTrades]

This is great! I really like the explanation of the square wave and the joules that is being absorbed/generated. This really clears up some misconceptions! I did already know that a clipped signal can create more heat on a coil, and NOW I know why. Now I am gonna have to check out some more of your videos!

[@RobotUnderground]

Glad you enjoyed it!

[@wilsonrawlin8547]

Well said and hertz makes a huge difference for the time it spends in any position under high load. Stop a coil inside the motor under high load and it will be torched as well. Don't hesitate to correct me if I'm wrong.

[@Simpleman87]

Another old-school trick is someone can use a tweeter in circuit, with the subwoofer and the amplifier to the detect clipping. The tweeter will start chirping as soon as the clipping starts !

[@dapoolboy7532]

I use this method. Works perfect.

[@kevinlechner7722]

Does it not blow the tweater playing those low frequencies through it?

[@TimpBizkit]

​@@kevinlechner7722 they usually use a piezo that has a high pass inherent in its design. But for a regular tweeter you need a high pass crossover or a low value capacitor, otherwise the bass signal will burn it up quickly.

[@narmale]

@@kevinlechner7722 thats why you use the cap

[@djtomtrain2015]

Wow. Actually the best video ive seen about this. Well done.

[@bassinurfacerik2990]

Very true you explain things well.this is RIK from Lordof Bass we are out 4 inch coils do carry or have 10 d2 coils by anychance

[@RobotUnderground]

I probably have some but you'll need to text me direct 602-312-6504

[@bassheadfanatik]

Bro thank you for this video. I needed more questions answered after this but learned more than I ever thought I knew. And your lesson on square waves and resolving them is exceptional

[@desmondyankana]

Its true i never use tools only ear here in trinidad

[@amplificadoresgdls]

I love this lessons , 😂😂😂 yo are the best teacher but this generation it's not ready for this conversation lmao ,

[@cadenjames442]

I am 🙂

[@ThatsMrMark]

Facts

[@dunnbizzy79]

I like your style lol.

[@ceciljones1248]

I just watched your video again because you are a straight forward person and you don't sugar coat anything when you said leaving the gap pretty much not setting your subsonic filter properly that causes too much excursion which means it leaves the gap and like you said when you turn the volume up to much the head unit is clipping your amplifier so everything plays a big role i keep my head unit at a low volume and my subwoofers are lukewarm even when it is over 100 degrees

[@RobotUnderground]

You can set the subsonic in certain applications. Remember that the subsonic / infrasonic filter was created for only two applications. 1st the rumble of vinyl records being slightly warped and playing on the turn-table. 2nd as a high pass filter to prevent the amplifier from going into DC-offset when playing really low frequencies. Many amps already add this to an amplifier, especially in Class D amps. Otherwise though, you don't need it, just turn it down or off and use the amp / system normally.

[@joeyamador7961]

I can unequivocally say this the coolest nerdiest content and it's awesome! Love the content man!

[@nickriker8336]

Love the video man. Waiting for someone to tell it like it is, thanks.

[@narmale]

i ran a Diamond D3 1st gen for YEARS on a 1st gen Maxxsonic Brutus 3k... they both work to this day... just dont be idiots! its that simple!

[@SATANALEX9]

EMF Audio Shawn didn't explain this half as good as you did now I understand when the coil is out of the gap it doesn't disperse heat as good as if it where in the gap causing the coil too heat up rapidly,much faster than it can cool itself.

[@cpufrost]

A speaker motor is a permanent magnet motor. The relationship between current flow in the coil and excursion is a complicated one. Exceeding the VC thermal ability for long is going to cook it. Just as if you lock the rotor on an electric motor causing the current to increase way over running amps and causing smoke if no overcurrent protection and/or thermal protection is present, the same can happen to a speaker. In a ported box at the tuned frequency the excursion is very low and this causes impedance to drop and power from the amp to increase. Increasing the amplitude higher exacerbates this characteristic until the coil burns out. Feeding a ported system frequencies well below the tuning frequency causes the drivers to unload and excursion to increase to xmax and eventually xmech if you're unlucky and that familiar clacking noise of the former colliding with the back plate if the design allows it. Some are just overbuilt to prevent (bottoming) but if really pushed can actually remove the former from the cone and spider altogether. Shorting rings are another way to keep it from leaving the gap too far. But an experienced operator and gain level engineer should never let this happen. Or be prepared to pay high re cone bills!

[@11164kloc]

💯😆🤣I LOVE THIS DUDE WE NEED MORE🤣😆💯

[@bradmeek]

Im glad you didnt release this video a month or so ago Running in my DD AUDIO 818D (4"VC) and after 5 mins of half decent clean power the coil started to smell Thankfully it was just the shit and excess burning off the coil, now I can throw well over rated at it for 20mins and it's all good

[@RobotUnderground]

You may have been experiencing motor stall as the suspension was breaking in. Not sure. Wasn't there.

[@FinsleysCustomCarAudio]

So much knowledge in one video :~) Cheers from, Ohio..

[@joshuarayne1676]

The time out of the gap is directly related to how clipped the signal is. Music is NEVER A SINE WAVE. But even the worst clipped signal isnt a square wave.

[@justhere9229]

Clipping also hurts the amplifier so preventing a square wave helps the overall longevity of your system

[@SDS-1]

I lost it when you started jacking the coil🤣🤣🤣🤣🤣

[@RobotUnderground]

Awe.

[@defectahz6399]

Awesome video but there’s a misconception when “ turning your gain to clipping then turning your volume down “. If your volume is down, your amp input voltage/signal drops enabling you to turn your gain up without clipping. So you’re most likely not clipping if you have your volume down and gain up. The reason why people kill their voice coils is when they’re gain AND volume is up

[@kingskingsmanship]

Now!!!! I understand why. So that means pay attention to the heat.

[@jimiKr43]

Very well explained !!

[@michaelzernie7092]

Fantastic explanation. I have had subs that smelled. But those Rockvilles were waaayyy overrated. My A.P. subs haven't smelled yet. I pound on em frequently too. Love watching your videos explaining how things work. Keep goin dude. Punch that baby!!

[@RobotUnderground]

Well that's the thing, it really doesn't matter what a sub is rated for if you just use common sense. The subs will always let you know when they've had too much of a good time.

[@briansouth9325]

@@RobotUnderground just like a cheap hooker

[@juugman6648]

How can I get u to repair my sub it’s not burned out or anything still plays but I’ve smelled a few times now and sounds like you’re the man for the job

[@RobotUnderground]

It's fine just keep using it or if you want to upgrade go ahead and sell it while it's still works and then we can upgrade from there

[@RobotUnderground]

Just text me direct with your name and your shipping address 602-312-6504

[@anthonypacheco7606]

Why does my mtx 9500 15 inch subwoofer smell at 70 degrees?? Any advice?

[@RobotUnderground]

Like when your mom washes your crunchy socks. Maybe that temp re-activates the funk.

[@codemaster3696]

Have you seen people that are heating water by rotating neodymium magnets along a section of copper pipe, so what this told me is that if the coil was not energized just the movement itself would heat up the coil so in a speaker you could be dealing with two sources of heat? Of course the heat from the applied voltage as well as this heat that is created as a result of the coil reciprocating through the field. This kind of hit me as I was watching your video..... Just finished the last 2 minutes of your video and believe what you were explaining is the same thing I'm talking about by the coil being out of the gap or they are at least related anyway. Great video now come to the conclusion that there are two main causes of heat in the voice coil and more math then I would ever want to do figure it out, but like you said visualizing is key become one with the coil!!!

[@RobotUnderground]

Post the video

[@clivetreu3325]

I enjoyed the vid and you help clear some distortion from mixed information, what you just demonstrated made complete cents to me, i played my woofers hard and just when i reached the desired vol i smell them coils, i thought my amplifiers were faulty, cause i had two Solar 1500d mono blocks on two 12" XTC Audio flavours 6000w d4s, noticed the one woofer started pulling in at full volume, now i no what was happening, i was pushing them beyond mechanical limits over heating the coils with a slot port box prob out of it's parameters, now i no y 4th orders are so popular thank you!

[@RobotUnderground]

Sure you might want to just look for a subwoofers with bigger stronger magnets to replace the ones you have now

[@rmwils1614]

I am completely new to this so I know very very very little, you sir made it so easy and enjoyable to get this. Please don’t change. Only question I have is, if it has been smelling like it’s burning for about 10 days after installing it (second hand and a decently strong smell), how fucked is it? Alpine s series 12” powered by 500w alpine monoblock if that helps at all

[@MacNifty]

I would say that they have a loss of resonance. They are with a jitter.. Is super fine.. It's a jitter and hesitation... The power over and smashed in limits of performace in amp, sub or and more heat and bye bye combined with outside or inside. Distorted signal is a lost signal basically. It's missing sensitive information that keeps you on the road. Joke I speaker can't go sideways... Oh that definitely has resistance in the stroke. Pushing when should be pulling. Some people say no way because they don't realize how fast or small it is as it's a matter of time and space. Have a ramp up and ramp down square wave... That should be fun too. lol.

[@Gomez561]

Wow, I learned a thing or two! Good way to explain it 👍🏼

[@RobotUnderground]

Glad it was helpful!

[@cliffordjasway6817]

Bad ass thanks for the information 🤯🙏Jack off 😂 stress relief good one

[@kevint10121]

Excellent explanation. I appreciate your honesty. Would love to do business with you. Thank you for your time and effort. Kevin from Jersey. Keep it up.

[@RobotUnderground]

I appreciate that!

[@madlad_don2387]

ill be honest, i have a jensen amp that is rated for 1200 watts and I doubt it ever hits that, but I've also got 2 12 inch jensen subs and I'm 90% sure that I've almost cooked them a couple times but they keep taking all I can throw at them so I just abuse the shit out of them and its great, I plan on upgrading one day so for now its loud as hell and fun.

[@RobotUnderground]

Text me pictures when you can 602-312-6504

[@defectahz6399]

Awesome video but there’s a misconception when “ turning your gain to clipping then turning your volume down “. If your volume is down l, your amp input voltage/signal drops enabling you to turn your gain up without clipping. So you’re most likely not clipping if you have your volume down and gain up

[@RobotUnderground]

Think of the gain and volume knob as a relationship like a seesaw. It doesn't matter how much the other person weighs, you always want it balanced. Depending on where each person sits can determine whether it's balanced or not.

[@Widowmaker2828]

So if all coils are good up to 500 degrees Fahrenheit, how hot can I let my coils get (checking with a laser thermometer) before having to stop playing them? My coils get pretty stinky around the 300° mark. I was trying to keep them under 200° when demoing at the Ruckus show but it was the first day I was playing with the digital laser thermometer. 4" flat wound 8 layer dual .7 coils on a clamped 3050 watts with extremely minimal clipping according to the clip light. Good vid! 😁👍

[@RobotUnderground]

500F is fail temp. However I've built subs where they've melted the aluminum and that's 1200F. If they stink, turn it down. Don't need a fancy laser.

[@Widowmaker2828]

@@RobotUnderground Cool I appreciate it. They were stinky for about 7 hours each day two days in a row lol. If I turned it down I wouldn't have been able to demo at all. Gave out over 30 hard 160+ db demos that weekend. If I blow one I'll recone. 😁👍

[@deeznuttz7980]

So your saying turn the gain all the way up just don't turn the volume up how loud should I turn it up ?

[@jeremynelson8496]

Dude I can smell you're bassing wrong! lmao nice one Robot

[@salvatorehayes2753]

6:05 Copper Definitely Conducts Heat Alot Better. If You Ever Tried Drilling Copper Buss Bars Or Copper Lug Holes To Widen Your Hole For A Larger Stud... The The Whole Thing Gets Hot Instantly / Evenly. Aluminum Doesn't Seem To Wick Heat / Transfer It As Fast. That's Why High End Heat Sinks Are Copper And Cheaper Ones Are Aluminum. I Believe Silver Is The Most Electrically And Thermally Conductive Metal, Impractical Due To Cost. Gold Is Below Copper And Above Aluminum I Think. I Did Some Searching And Aluminum Is Technically The Most Current Carrying Material For It's Weight. BUT The Volume Of Aluminum Cable Is Silly. Say You Got 2 Cables Both 10Ft Long And Need To Carry 200 Amps. The Aluminum Cable Will Be Lighter But Will Be Physically Larger And Substantially Larger Then The Copper Cable.

[@TimpBizkit]

The more load on the speaker, the lower the impedance goes. When it is free to move, the higher the impedance and also the better the cooling through the vented pole piece. So holding a speaker still while dumping a long sine wave into it near its limits its likely to burn it up. Whilst you wouldn't normally hold them still with your hand, tuning frequencies of boxes can do that. Leaving the coil gap reduces your mechanical reactance, so again more heat. (Not sure of cooling effect of proximity to steel magnet vs just air.)

[@RobotUnderground]

Yes that is called stall mode and I forgot to cover it in this video

[@TimpBizkit]

@@RobotUnderground the leaving the gap thing is bad in 3 ways. 1: You start to need more power relative to SPL 2: You lose mechanical reactance (the back EMF when converting electricity to kinetic energy) thus lowering the impedance. This also happens with DC and stall mode. All the energy gets turned into heat! 3: You lose the proximity to cold steel to absorb voice coil heat (though perhaps having more air circulating can compensate for this). I watched many speaker blow videos and it did seem like it was easier to blow the speaker coil on the same settings once it had left the gap completely. About square waves: an electrical square wave will not cause the cone to move in a "square" pattern (unless it is a very low frequency like 1 Hz), though it will still contain more energy than a sine wave with the same peak. The current determines the acceleration of the cone, and to get the cone to move in a "square" pattern needs very high current spikes in opposite directions. You will get more of a "dirty" sine wave with a square electrical signal, and the cone will have more excursion than the same peak voltage sine wave, so you won't be left with inadequate pole piece cooling. Everything is program dependent. Some rap/dubstep bass tester will heat your subs more than a rock track driven to clipping, as it's still only kicks and bass guitar and a bit of tom and lower vocal going through the sub.

[@RobotUnderground]

@@TimpBizkit As I talk about in the video, a square wave is harmless until the total voltage exceeds the force of the motor. You can play a really clipped wave all day long. In fact, in some music, there is distortion built into the music, (NIN for example). It's only when the output of the amp saturates the motor that you run into problems. Thank you for your response.

[@asmack360]

What’s that music you’re playing it sounds nice and smooth

[@RobotUnderground]

kzbin.info/www/bejne/pqqmnJuGibpkadk

[@anonymousvic5370]

Idk man i push 3k rms all day to a hcca 154 and i only dump lows 16hz-31hz all day long so that coil jumps out that gap all day long and never gets hot

[@DjR3aper]

so if they shouldn't come with a power rating, how do you know how much power you can safely fun through it?

[@RobotUnderground]

It doesn't matter. Always use common sense. When you smell them, turn them down. You can get an idea of ampacity by how strong or big the magnet and coil are but you won't know the truth until you use it. Ambient temp, enclosure type and size relative to the Vas are all important factors. Here's a few white papers published by Dan Wiggins, founder of Adire Audio. web.archive.org/web/20041212012348/www.adireaudio.com/TextPages/TechReportsPageFrameText.htm

[@rashad5286]

Thanks for the info!

[@kevincharles1983]

I have direct cold ac blasting on my amp and speakers while playing. Works great

[@RobotUnderground]

Look at you King Kevin with your fancy air conditioning! You must live in the future.

[@teeone10]

He teaches and makes me laugh at the the same time. I have a old lanzar opti 1233d has a cracked basket on top (rim) and definitely needs to be reconed. So if reconed will it play the same way or have the same fs

[@RobotUnderground]

Heavier coil and softer spider will give a lower Fs.

[@20hztimanderson85]

My hero!

[@DavidMiOo]

I'm a high level network engineer for the worlds largest IT solutions provider with no college and when I am hiring for my teams, I take experience over education, and if ever asked why, I have one simple statement. If everything worked like it says in the books then I wouldn't have a fucking job. When contacted for a contract and asked about education my response is none, if they can't work out how I have nearly 2 decades Sr. Level experience and am now consulting their CTO, which makes all that shit irrelevant, then I don't want to do any business with them. It's like hiring the best plane designer then asking how he did in high school math. It's a level of stupidity that I personally opt out of, and I wish everyone else was in a position to do the same.

[@cartycartyamplifiersalesrepair]

Nice explanation Sir your right on point 👍 👍 🙏

[@RobotUnderground]

Thanks and welcome

[@hopskustomaudio]

You sir are my new favorite person! Lol. Great video

[@hispls]

I would argue that if you could build a cone/suspension light and soft enough to reach x-mech on 200W that you could play that woofer with the coil traveling outside the gap all day long without failure either. The important bit here is that coils burn from putting heat into them faster than it can dissipate and if it stinks you're overpowering it and need to turn that shit down. Try to tell people this and they look at you like you have three balls.

[@RobotUnderground]

What's wrong with 3 balls? kzbin.info/www/bejne/a16Ziohnq71mY5I

[@raymondrespress50]

Thank You So Much Friend!!!😊👍

[@elviscaragea4433]

Then a subwoofer can handle more power at higher frequencies? Above 50hz (80-100) because at that range the Xmax is very low. Can i add a couple of db at that range using eq? Without burning my sub

[@mattm2684]

Does high damping factor on a amp help with this problem ? How accurate to manufacturers rate damping ? I have a old PPI PC2350 claims it's 500 factor. I really need to get this amp fixed and going again. When I had 2 of these and wasn't in the dbdragracing lanes. I would run one to my door speakers at 1/4 gain no problems. NOT THE MOST POWERFUL AMP COMPARED TO TODAY AMPS. But it made 4 cheap efficient 15s hit 155db all day long in my daily driver never a problem. ( most people don't believe me when I tell them I was running 90 watts door speakers) I USED EARS TO SET EVERYTHING) I sat in a lot of manufacturers demo vehicles tuned with computers back in the day and didn't like how any of them sounded while the factor rep would be bragging about how flat its tuned and all the computer shit they used. LOL

[@RobotUnderground]

"Can you hear the difference?", is the real question.

[@hydroponic6561]

Excellent info, Thanks as always!

[@mkloudsql3285]

Wheres "Shield" with those new vibranium coils. And thanks pat for that epic real life hands on knowledge. Im in RF and i allways tell people. Numbers a good way to start but trial and error is what gets shit working properly.

[@RobotUnderground]

Correct.

[@lylegoodluck]

Az here!

[@easerone1651]

I start smelling my 18" dc audio when playing old school 90s bass,

[@teknikalvette]

So clipping if not leaving the gap will not overheat th coil?

[@RobotUnderground]

yes! Try it yourself. You can clip the input of the amp, the output of the amp and as long as it's a low level, you can do it all day long. NIN sometimes has clipped signals in their music and it's fine as an example.

[@mumbols]

Im 3 minutes in yeah you got my sub

[@danielhardiman4707]

Ears are all ive ever used to tune with.Buying a distortion detector to me doesnt make sense either doesnt the system voltage change all that when your powering subs? But honestly i beat the shit out of my w7 12s only problem this time was breaking my first attempted sewn in tensil leads but im gonna rebuild harvest the coils that are in great shape maybe 4 months of play tine and try using 2 sets of skyhigh 14 gauge ofc with heat shrink around those and give them that oem form fit connection i am gonna sell tho but like your vids bro!

[@ceciljones1248]

Hey Robert why don't fi subwoofers have a hole in the bottom of their magnet like the majority of subwoofers and how do they stay cool?

[@RobotUnderground]

Hey Cecil. My name is Patrick Chandler. The organization is named Robot Underground. Some designs know that their subs are going to be abused and constrict the air flow within the gap. Scott / Fi did this first with the RE Audio MT back in the 2000's. By not venting the motor, you do gain some thermal mass. You also force the air in and out of the gap in a violent / turbulent way. It's not a quiet process. But if you're getting loud like in an SPL vehicle, mechanical noise of the subwoofer isn't an issue. It's just another way to do things. Is it better?? Scott seems to think so.

[@ogairbender808]

Wooosaaaa Patrick 🤣🤣🤣😅you can't save em all

[@RobotUnderground]

One at a time. For them it means the world.

[@MacNifty]

So many times people have just a hot car or they have it in the trunk... And it can't put up with it's rated power and they cook. The person calls that name brand a piece of junk but it was really just the operator that treated it like junk.

[@RobotUnderground]

You are correct.

[@dustylittle9584]

Thank you!!!!!!

[@RobotUnderground]

Welcome!

[@dabeardsmen3621]

It makes good sense

[@jasonmcdonald7187]

Quick question I have a kicker solobaric 4ohm wired to 2ohm. Don't have a car amp yet so I brought it in hooked it to a vintage marantz home system the sub is making a popping cracking sound while playing like could be blown. I ohmed the coils 3.4 for each side so that's good when I push on the sub no rubbing feel. Can this be because my home stereo is not same ohm rating? Unsure if I should junk it.

[@RobotUnderground]

I'd have to see a video, but it's best to try with different amps first.

[@gradydeadsy6001]

You have to much fun stroking the coil in that loose ass gap lol

[@RobotUnderground]

Well when you're a good mormon and you have to preach the gospel to all the whore houses, it's gets a bit intense.

[@daltoncute]

Love it.. keeping it real!

[@maxwedgedickdasterdly5586]

Just found your channel common sense is hard to find. I've been burning up speakers for ever. Now I think I know why . I'm an Idiot . I play music like I drag race . Wide open ! Lol 😂

[@RobotUnderground]

Live and learn just consider your mistakes part of your education.

[@dannyquezada6986]

The best!

[@elviscaragea4433]

From what you are talking here i understand that big xmax subs can handle more than the 1000wrms that they are ratted for?

[@RobotUnderground]

No that depends on many other factors including motor strength and the thermal mass of the coil

[@215sinakia7]

very informative thank you for this

[@RobotUnderground]

Glad you enjoyed it!

[@delaneo100]

Have you heard of those Peerless by Tymphany subwoofers with the large voice coils that can go in a really small enclosure? If so what do you think about them.

[@RobotUnderground]

Just a different colored potato. It's still makes tater salad, just how much are you paying?

[@filibertofonseca8083]

If i understand you correctly you are asking what would the pros and cons would be. Pro is the small enclosure and con would be the point robot underground made is cost. You could probably do the same kind of salad for less

[@wilsonrawlin8547]

@@RobotUnderground LOL! I know this is an old post, but I had to respond to the "tater salad" post. So brilliant and on point. ;D

[@tourguideabelTGA]

My 10inch be lnockin. It burned up today to Juiceworld BIG.

[@Bobcatspiritdude]

Is it possible to replace a voice coil while keeping the original cone ?? Thanks . I have an Mtx 7500 12 4ohm aluminum sub I might need refurbished

[@RobotUnderground]

It is a very difficult thing I don't even attempt it

[@bumblezee]

Can you fix a blown voice coil on 2 rockford fosgate p3 12s shallow mounts? If so i need your info asap lol

[@RobotUnderground]

Nope

[@SQ_Silverado]

My alpine Type S and Type R both smell like some weird rubber plastic but not burning or smoke smell .. idk if it’s cuz they are new

[@RobotUnderground]

Flip those before you kill them and get some bigger / stronger subs.

[@russsmith9042]

Patrick you rock man. Yeah clipping the way you explain it the way I understand it is when the subwoofer actually goes up and actually stops for a nanosecond and then goes down and stops and the harder the clip the longer it's going to be stopped and when it is stopped it is sitting there generating heat and building heat and burning for that little bit time but that don't take long and it's fucking burning so yeah you're funny as hell dude so true though thanks for all your input output and all that shit man keep it up!!

[@kennymccormick8295]

Great punctuation.

[@cpzmelbs]

​@@kennymccormick8295what punctuation.. You tryna be a wise guy? Lol Call me a ding dong but I honestly don't give a turd how ppl type. It's like the words were copy + pasted from his brain as he was thinking it which allows my smooth brain to do the same but in reverse

[@cpzmelbs]

Anyone that capitalises the first letter of each word can kindly buy a dd1 and fall off a cliff, however.

[@RyanBassForLife]

Its interesting I learned something. Its good to have a very high temperature coil.

[@RobotUnderground]

All coils are the same temp. 500F

[@RyanBassForLife]

@@RobotUnderground must be the glue that gives them there higher temperature ratings.

[@RobotUnderground]

@@RyanBassForLife Do your own testing lol. See how the glue stands up to 500F

[@RyanBassForLife]

@@RobotUnderground I'm not sure how glue withstands heat. I'm just guessing the glue helps if it's rated at a higher temperature 🌡🤷

[@RobotUnderground]

@@RyanBassForLife The glue is there to hold the whole damn thing together. There's no such thing as HEAT TREATMENT for coils. The glue and all the other adhesives simply get hot and then fail at 500F and above.

[@floydwilliams3321]

Engineers they’re crazy❤

[@turblown]

Whenever I start smelling coil I turn it down immediately but always leave the sub moving so it cools faster , my theory is if you stop the sub completely it will stay at a high temperature like in an oven just roasting and shortening the coil's life. Turn it down to 1/4 volume , never completely down.

[@commonsenseisdeadin2024]

Same, Because logic!

[@DjR3aper]

and that's the best way to do it unless you find out like I did that my spider separated from the basket 😆 🤣 😂

[@geraldeverette4245]

Lmao I love you dude you tell it like it is

[@MikeAnnunziato]

Best way to learn is hands on.

[@RobotUnderground]

Hands off Deez Nuttz

[@Feardorcha314]

Good video music

[@RobotUnderground]

Check out my playlists

[@hardhead7056]

Ive heard copper coils lean to "SQ". They are literally heavier because copper is heavier, but more electricaly efficient. But they dont dissipate heat as well. Aluminum windings are less efficient but lighter and dissipate heat better. Leans to "SPl" or competing.

[@RobotUnderground]

The electrical properties don't matter in this application. The weight is what really comes into play. Yes, heavier = SQ, meaning it plays lower. The lighter and stiffer the suspension yields better numbers in power and efficiency but at the cost of being able to play low = SPL applications that give you higher scores but SOUND LIKE SHIT.

[@hardhead7056]

@@RobotUnderground SPL one note wonders are not my cup of tea either. But the physics involved in it i can get down with. Getting a good spl score on music is neet, but, just not that critical in my world as well.

[@hardhead7056]

As an aside. I need a TREO 15 reconed. Shifted top plate. Its frozen.

[@RobotUnderground]

@@hardhead7056 No problem. Text me. We have great UPS ground rates, 6023126504

[@RandoManFPV]

@@RobotUnderground wow after reading how simple that was for dude when he had a damaged subwoofer, I'm subscribing. Might as well prepare for when my subs die right now, make friends and figure out how we gonna fix em when they go 😅 Edit: not to mention the clear thorough and applicable information available on your channel

[@MyBlowncobra]

Do a video on how to take an old woofer and while reconing you get more power handling from it...

[@RobotUnderground]

That is FALSE NEWS as FB says. I've discussed this several times. You can put a stiffer suspension on it and technically, YES, you get more power handling... but at what cost? The cost is that the sub cannot play as low as it did before.

[@Contact_Info]

If you.overpower them they do that too..I had a Kenwood 400 wattrms and powered within mtx 10001 450rms at 4 ohm and it smoked up like 10 minutes. Gain wast too high though.

[@RobotUnderground]

Well the total voltage that you were running to the subwoofer was too much

[@Contact_Info]

@@RobotUnderground true

[@Deeznutzyamouth]

Lmfao. I'm dead epic vid fam .

[@goddesslove4301]

Really liked this video I always wondered why my skar heated up I did just build a 10 inch subwoofer sub it's rated 220 watt but I put 100w to it and it takes excursion all day: also a question can I use a 220w mini amp on my skar sdr 12 600w if I wire it right or should I not do it I also don't use my gain for volume love it keep up the great info vids

[@RobotUnderground]

Glad it helped

[@goddesslove4301]

@@RobotUnderground what about my question bro

[@RobotUnderground]

Just make sure you observe impedance minimums and use common sense

[@goddesslove4301]

@@RobotUnderground I have it wired to 8ohm

[@goddesslove4301]

But thay heat up tho idk why

[@makskoma]

How about to make box tuned to 40hz and play 50hz full gain doing clipping,50hz not have big xmax and wont leave the gap,do it burn?

[@RobotUnderground]

You can always make it leave the gap, you can always burn it.

[@NateHarrisCreations]

But isn’t a square wave on a oscilloscope considered clipping?

[@RobotUnderground]

The clipping created a square wave. It just depends on how much clipping there is. Yes you can generate a square wave and listen to it.

[@timcouch5005]

Do a video on how to figure the actual power capabilities of a subwoofer.

[@RobotUnderground]

It's too complicated for me. In the end it's a guess anyway. You can guess conservative or you can go wild.

[@johnoates3326]

Each time i get to my location after playing i always put my hand on my dust cap and make sure its never hot..If it is beyond warm that means my volume goes down next time i play lol..I cant afford to make those kind of mistakes lol

[@mattwells1036]

What makes heat in wires or coils, is AMPERAGE. If you feed too many amps through it for too long it gets too hot. The reason clipping increases the likelyhood of cooking it is because its putting more amperage for a longer amount of time through your coil. Heat isnt only happening because it's got less windings in the gap, but does get worse if the coil doesn't move momentarily. How much it moves and how much airflow it has effects the cooling and therefore the amount of amps it can handle and for how long. There is no exact number, it's about time. How much time can it handle X amount of amperage for before reaching thermal limits. If you have anything more convincing that it leaving the gap increases how much amperage we see(like say, when it stops or nearly stops at the end of its stroke, the coil is no longer inducting back voltage, so is this going to increase amperage for that moment? Decrease it? You can handle clipping when the amperage is far below what the coil and its airflow can handle, that doesn't prove that the cause is leaving the gap, just that enough amperage to make it leave the gap, is going to create heat. Theres plenty of proof that leaving the gap doesnt cook your woofer when it's not seeing excessive amperage, you can push a good amount of woofers and subwoofers to those excursion extremes in free air and often not even induct any noticable heat. The main factor at play is amperage over time, in my opinion.

[@elviscaragea4433]

interesting