Voice Coils 

As a car audio enthusiast/competitor and engineering student, I really appreciate the time, effort, and technical detail that you put into your videos.

Thanks Edward Lester for making the video and giving me props too. I appreciate all your videos and thanks to you we all have a better understanding of car audio in general. Keep those vids commin'!!

The most informative video on subwoofers ever anyone who's into speakers for a car audio needs to watch this video

Dude....You had some CRAZY science in your presentation. Totally awesome video. I wish that I could send you my blown amps and speakers I have accumulated over the years.

So far, this is the Best explanation of aluminum voice coil vs copper coil. and single voice coil vs dual VC.

awesome video ... hate when people make videos and don't know what they're talking about. I liked!!! Straight to the point.

One of the clearest explanations I have ever heard......big thanks !

At about 0:34 when he just slowly gets closer and closer to the camera I just started laughing my ass off

Hands down the most informative publisher on RU-vid. LIKED! FAVED!

It all depends on the woofers design. Both flat, and round wire have their advantages and proper applications. Flat wire has greater surface area so it may cool better. So many SPL woofers use this. Round wire allows you to fit more windings in the gap for greater efficiency and many SQ woofers use this.

Great info. Thanks! Also, you're very well spoken.

Great video bro. Had me listening attentively whole time. Very informative but also to the point.

Great video.. I was searching for this type of tutorial. thumbs up.

GOTTA BE THE BEST VIDEO IVE WATCHED LEARNED ALOT AND U MAKE A GOOD POINT BRO

Great video!! Thank you for making these videos very helpfull and enjoy them very much!!!

Im also on SMD forums its really great I like your videos there very informative and are easy to understand keep it up

HOLY CRAP, I have learned so much here. The rap artist Migos bass frequency, had destroyed 2 of my speaker voice coils, be warned. My sound system was a 3500 watt PA. Thanks, ShowtimeSPL.

Man, you are a great teacher!!

Your videos are really informative thank you. :-)

buddy i was just beginner in this thing. u r video did lots of help to understand

ED THX FOR THE GREAT INFO I JUST GOT MY 18 INCH AQ HDC3 WITH LEVEL 6 SOFTPARTS AND A SPACER FOR THE MAGNET FOR BETTER COOLING.

Ed Lester you are the man!

Really informative. Thanks!

Wow learnt a lot!! Great vid subscribed

You have a very good point there my brother. I apologize for the comments. Your a awesome guy.

Perfect!! ......You are the only one. Thanks

Its up, link is on the screen and in the description

Great instructional video brother

A few SQ and HT companies did that back in the day. You can even use a potentiometer to fine tune the adjustment

Great video!! Thank you

great video man !

Great clip

I love what your saying about efficiency I was thinking almost through the whole video please make a follow up video of what you find thanks for your videos

Your the best Edward

Good stuff Ed.

Great info!!

Men you are indeed a good explainer, easy to understand you. Good job. Thanks for all the info. I'm doing a DIY project on voice coil, though i don't know electronics, my confusion is how do you determine the gauge of the coil, to be used, the height of the coil, number of layers to get either 4 or 8 Ohms, don't know if i spelt it right, but i mean the impedance. Thanks.

Wow! You really know what you're talking about! I'd love to see a video how to rewind a voice coil.

Love the videos, I used your recone giveaway video to learn how to recone on my own! Great videos, maybe you can give some of your knowledge on motor cooling options and how they affect heat dissapation of coils!

Ed, thanks for the great video. My question, can you recommend a primer on speaker design that covers the fundamental science and develops from there?

awesome video i wana build my own subwoofer and see about that voice coil over voice coil and take everything you just explained in to concideration ima try

Would like to see some insane underhung coil designs, would be super big and heavy though. Imagine seeing a 4 inch top-plate with a 1" length coil.

Great video.

Great vid bro...when are you going to upload the other part?

Awesome video! The only thing I don't think it touched on was flat wound vs. normal coil. I would assume that a flat wound coil would yield more surface area, but it's also quite a bit more thick, so you would need more length of it to end up with a reasonable resistance, thus raising your mms and changing your Q values. I'm about to choose a re-cone for my AA Havoc V1, Fi being one of the options, and they let you pick between Flatwound or "x-max" for your coil. Does a flat wind affect x-max and x-mech?

awesome vidio. tnx

nice video, i would like to play around with the speaker design, how would the height of the coil and its resting position affect , the linear displacement , frequency response and power output of the speaker?

+ShowtimeSPL where can you pick up the Voice Coil Bobbins? Always been a little interested in how Speakers worked Plus how to do some Repairs on them. I actually have some Home Speakers that could be repaired. New cone mainly, but I'd like to use some of my OLD Speakers to toy around with by rewinding voice coils and such. So i'd like to know, if possible, where to Pick up some of the bobbins or could I basically make them out of anything but conductive materials?

I have designed and built my own frames and wrapped coils. But more production quality than homemade. Magnets have almost nothing to do with power handling, it is all based on the coil and suspension. So yes, a stiffer suspension will change that. We have 2 terms, thermal power handling (voice coil) And mechanical power handling (suspension and tolerance of parts). Distortion is caused when the cone/coil moves in a non linear fashion. Usually when the coil moves beyond X-Max.

Best Vid on youtube. Thank you

@showtimespl were do u get ur parts from?

Nice, an educational voice coil strip tease.

Good info!!!

Hey I have a question, I have a 12 inch 300w sub from RCF and it's the voice coil is vibrating It is resonating with the music When I push down the cone it doesn't make crackle sound or something

Good vid!

Thanks man,

I learned quite a bit watching this thank you, but I feel you could have gone further in depth about the differences in a 4 layer VS an 8 layer coil which is why I searched out the vid to begin with as I have 4 Addictive Audio V4 15's with an 8 layer copper coil and I wasn't exactly sure what the difference was between these and my last woofers which were Sundown Sa15's with a 4 layer CCA coil also which coils are best suited for which applications ie. SPL or sound quality so on and so forth

Thanks man

It depends, sometimes you can cook off the non conductive coating and short the coil and the impedance will drop close to 0. Or if it heats up enough, the coil wire will open and impedance will be super high or even just fully open. Anytime you see it still in operating range means that you just smoked off the adhesive and the coil's mechanical attachment to the former is weakened.

Ed my 18s are hdc3 motors and baskets and the soft parts are dc level 6 recones with 8 layer coils, dual 2 ohm copper, in your opinion more or less do you think the rms rating would be closer to 1500 rms or 2000 rms per sub? Thx for any info

Just smoked 2 15s. I got them cheap on amazon and destroyed the voice coils. I would like to just drop in another voice coil(s). Found a website and plan on buying new voice coils. I am hoping to bring up the RMS power a little. Is there anything else I can do to bring up their power handling? Anyways, great vid. Really informative for someone about to do a Voice coil install.

Good video, I do a lot of recones for people myself, I try to stay away from the custom stuff, and I tell the person that the company usually uses their best parts for that woofer as its how it is designed to be used. However I always get told that If I go and use this coil from a 3000 watt woofer in there 1500 watt woofer that is being reconed it would be louder. I often try to explain to them that now you have more heat to dissipate that the motor was not designed for. som never understand it

thank you sir.

do you have an opinion on the fi sp4's? they have 33mm of xmax, so does that mean more air moving in and out of the box?

I don't know if twins or bipolar or what, but the second you is better. The nerdy type is better for this type of vid. Very good vid too. I like it. Very interesting.

Good info

Hi did you made a video about multi layer coil?

hello. i just want to know which Glue are you using? i want to try something different than epoxy. Please help.

Nice!

did the coil size 2.5 inch and 3inch work the same wattstage? ,or the 3inch play the low and loud ?

So who do you designs/engineer woofers for? or do you just make fun one-off subs?

Thank you

i have something i like to know for a long time. dual 2ohm VS dual 0,5ohm coil. booth connected so the load is 1 ohm and same power from the amp, will the heat generated from the coils be the same? as we know when you have a current flow trough a resistor it generates heat, but the higer resistance at the same power will give more heat right. example: 6KW trough the dual 2ohm in parallell = a total of 4 ohm wire on the way. and 6KW trough the dual 0,5 in series, a total of 1ohm wire on the way?

Thanks for sheding light on this once mystical technology. Did you know Jamaica is the loudest country in the world?

Nice tip

Its about time someone educated people on voice coils, ive been arguing that for along time how sloppy the new subs are with big open gaps with lots of spiders to control movement ! But you failed to mention edgewound voice coils like most of jbl speakers and subs use , And there jbl gti mk series subs that have 2 separate vc gaps and 2 seprate voice coils on the same former !

hey , very good video. i want to fix a blown MTX sub i have and i want to wrap the coil on my own. i have searched the internet and didnt find anything to help. is there a formula to calculate the power of the coil ? or even the impedance ? can you point me in the correct direction , thanks :)

good job! can you do one on fieldciol speaker?

do you need a lot more power to run a 5 inch voice coil versus a 3-in ?

can you suggest me high temprature epoxy glue for 2500-5000rms subwoffer voice coil winding wire?

I havent heard them in person so I cannot say. But more x-max does not necessarily mean more air moving or louder. What it does mean is that the coil is controlled further. If the motor and woofer is design with low strength and low power, this can aid in SQ. If the woofer is designed with a strong motor, this can help is make more pressure. Whether it gets louder or moves more air or not, depends on the suspension.

I have a 2 15" subs they are 3k rms team series Untouchable Sounds with 5" voice coils super stiff suspension will these after broke in be a misical sub?

Excellent vid bro! If the car audio thing doesn't work out for you, you have a future as an instructor... BigDWiz - OldSchoolStereo-com

you should make a video of you designing and building a hybrid woofer

I ordered a tsns 15 last november, and i was wondering if it is possible to get one more?

Great video. Thank you for the explanation! Really enjoyed it!

can you tell what glue hardens after being heated? Im about to rewind my hz hx300 sub and cant find any useful info about high quality glue

You're friends with bassotronics? That's pretty sweet. I'm new to audio and stuff but is it bad to play high frequencies on a subwoofer? because I have two 6 inch kenwood subwoofers with a 7 inch lg subwoofer hooked up to an old sony receiver. the tweeters have crapped out on the kenwood stereo so I'm just using the subs for the higher frequencies.

Oh... thank you!

So if I buy a 1000rms dual voice coil subwoofer, I sould give to each coil 500rms?

I believe its the magnet. there for the use shimes to center it when placing the coil in.? maybe?

nice i like ur repairing Speaker

What drop in cone kit are you placing on the basket that looks like a eclipse basket and motor. Trying to figure out what dropping kit to use for my Eclipse aluminum blown subwoofer

Hey I have a question I need answered and I can not seem to find a answer. Is there a way I can message you for this? Here it is if you want it here, I have been repairing, reconing and customizing subs for a few years and I have played this safe so far and have not had to worry about VC bottoming out. How much room should I leave between the bottom of the VC and the bottom of the plate? I know motor depth will play a role along top plate thickness but could you give me a good rule of thumb or percentage?

What's a good adhesive to maintain the winding together

Can you show what separates each layer and what separates each coil or just do a video on how to wind a dual voice coil.

What about professional audio speakers that use flat wire? I saw some older Peavey Black Widow drivers use flat in combination with a large 4" shallow voice coil. Is that for cooling?

does the winding height have anything to do with xmax?

Don't forget the "dust" cap,it traps the air making the voicecoil acting as a piston,pumping air around it.cooling the coil.

Question: Where do i buy the wire to recoil a car Subwoofer 4Ohm?