I still call it magic that whole voices come out of this wonder machine

Thanks, Johan, for answering a simple question in under 5 minutes, using clear diagrams, just the right amount of science, and a concise, well-recorded narrative. Yours is a procedure I wish more people who make instructional videos would follow. I'm looking forward to watching some of the other selections in your impressive video catalogue.

This is the way of telling something in an intelligent person's manner Without any decoration but just education Keep it up

Literally when you said look up Faraday law I looked it up and it explains so much it's amazing what you can learn it in just a few minutes

Great video! I’ve been wondering how speakers produce sound for years now, so I just decided to look it up today!

Your explanations were so calm and clear! Thank you!

I've literally watched dozens of videos on this subject, but this video clearly explained everything in a way that made total sense. Thanks!

Thanks man, spent ages looking for a good discussion on this :)

This was one of the most helpful videos I have watched.😁😁😁😁

perfect explanation for someone who does not understand anything at all, thank you, good job, well done.

explained in very simple and interesting way . thanks

Thank you Sir this really helped me for College, thank you very much :)

Damn. I always wonder how a speaker works when im stoned. This explains everything...

Thank you professor Snape for the great video.

Today my seminar of how work a speaker and this video is very useful to my seminar according to Punjabi videos ..thnx u so much

Johan thank you so much! I like your demos and tutorials really much. Please keep on doing this good work and benefit to us. Greetings from Germany

awesome lesson . internet bringss passionate teachers closer to eager students

This video really healped me find out who i am

Great explanation for my curiosity, thank you good sir.

Johan, great video. Just exactly what i want to know. Thanks.

Expertly explained! Cheers!

ur voice is soo comforting...!!

Thank you for the video! I will have to admit I wish my lectures would be voiced by you haha. Cheers!

Exolained really well, thanks a looooooot man

this actually helped alot with my homework, thanks!

My tution sir discribed same as you but you demonstrated it super......

A brilliant tutorial for a scientific dummy like me. Great stuff...I actually understand it thus far!

Excellent video, thank you.

Thank you so much ..That was really great and helpful..

Brilliant way to teach thanks and keep it up

Hi, Johan! I can't get enough of your channel. Brilliant. I was wondering if you could explain sometime WHY different speakers sound different from each other from an design/engineering perspective? For example, Creambacks and Greenbacks LOOK like they're constructed similarly: Basket, paper cone, voice coil, ceramic magnet... But what is it that makes them emphasize different frequencies to sound different? For example, if I got a brand new Greenback and immediately re-coned it with a non-Celestion replacement cone, would it still sound like a Greenback? Why does an Alnico magnet make the speaker sound different from a ceramic magnet or an electro dynamic magnet? There are a lot of guys on KZfaq who do speaker A/B comparisons, but you're an engineer and understand (and can explain) the actual mechanics better.

you have a great narrator voice

Brilliant teacher

awesome work

Nice Explanations.

This is amazing.

I still don't get it.. but I LOVE this channel and Celestion speakers!!

Amazing video!

Clearly Understandable one...Thank you so much for your effort Sir.

I am a physics major and think I understand the Lorentz force equation... the magnetic field inside a ring magnet should resemble the force inside a solenoid, which is all in one direction with the same direction as the axis of the magnet. The voice coil is within this uniform field, with lets say the field pointing up at every point on the voice coil. If I pick a point on the voice coil and do the "right hand rule" for a cross product of current with the magnetic field, I get an "outward" force on the coil at each point, as if the coil is being forced to expand. This doesn't produce a force upwards or downwards on the coil. If I want the right hand rule to produce an upward force, I need the magnetic field(or some component of it) to be pointing "inwards" at every point on the coil. This is best produced at the ends of the magnetic gap or even outside the magnet... so is the ideal rest position placing the coils near the top or outside of the magnetic gap?

Thanks...me and my friend had a conversation about it ....so we youtube it...and found you...thanks ....

Excellent explanation sir

Great video

Helped a lot bro!😉

im only watching this because of school lmao

very good presentation.. thankyou

Thanks for the explanation

Good lesson

SO GOOD! Thanks!

Very nice video and explain

GREAT VIDEO! THANKS

I'm a 10th standard student. In our text book this is very hard to understand. But when I watch this video this is very interested. 🤗🤗

Good and useful

Thank you John....can you please add the link of next video on subject

Thanks! I can now make my own 😊

thanks for the lovely video. the reason there is a force on the coil is not due to faradays law. if a wire with a current exists in a magnetic field, it experiences a force due to the magnetic part of the Lorentz force law

It's crazy how Dr. Johan has a much more British sounding voice than regular Johan.

Great voice

Thanks! This helped alot!

may be this is six years ago..but for me new video...tq Boss

Perfection!

Very nice

THANKYOU so much Johan! You are an amazing Teacher Wish I could talk to you face to face. Ive always been perplexed about speakers. I do have a question: In a movie scene we may have a bird chirping and a person talking at the SAME TIME. How does the diaphragm produce these two pitch's simultaneously if it can only move at one frequency. Either it moves at pitch of bird or the person. Do you understand my question? I havent got a straight answer from anyone at university!

Thanks for the vid. I'm going to make the best headphones in the world one day so now I'm just making my own headphone speakers to test out.

Good Video .. Cheers!

Interesting, thanks!

Thank for this video, and all the others Johan! Really great work and the comparisons are wonderfully informative! I have noted the lack of the JCM 2000 DSL 100 (or any other JCM2k TSL) in your vids. Please, is that amp not worthy due to tone or workmanship or ... ?

Nice video help me alot in exam thanks

nice information provide for speaker thx

Helpful

Nice

very interesting sir. you know i am fan of physics. there was an old speaker at my house. i knew that every speaker had a magnet. so i was eager to crack that and take out the magnet to play. but after i did it, i really didn't like to destroy it. i am planning to remake it in my own way and understand the mechanism so i will present in the science exhibition. help m with your appreciative videos.

Thanks for the great video! I just have one quick question. What is the difference between the mechanism introduced 0:10 and the one you talked about later on. I made a simple speaker with the first method, and it worked just fine, does the latter produce a different sound?

this was what I exactly looked for

Good video

thank you for the amazing video i owe you my life father please keep your faith in the sun alive

muchas gracias !!

johan, question, do the always orient the magnet with the north pole towards the front?

could you please provide the link for the next clip in the description? will be great healp if u do so

Thanks a lot for the video!! Im using a tube amp, and im sure you are aware that I cannot disconnect a speaker out of the amp while it is on because it will damage the output transformer. So I was thinking, can I remove the coil out of a speaker and wire it to a jack and use it as a dummy load for the amp? This was I can use the DI out without having to use the speaker, so is it possible?

Perfect

Nice plz put more videos

great video ma, really helpfull, qhere a i found the continuation?

great video !! where is the link to next video?

Hi john it is really great explanation.I want to know much more detail means if x is my input voltage then how much sound pressure generated by diaphragm movement.

Johan, how much of a role do you think speaker distortion plays in the classic sound of a pre rola greenback?

This is something the should do in school

Best channel on youtube! I wonder what happens if you degauss the magnet? Have you tried it?

Thank you

Thanks a lot

The pole pieces convert the ring magnet with a pole on opposite sides into a bent horse shoe magnet with the poles facing each other in the gap. Well imagine a ring of horse shoe magnets with the poles bent inwards to create a narrow ring shaped corridor with the north pole on one wall and the south pole on the other. In this sits the coil of wire, held in place perpendicular to the magnetic fields, such that the ring magnetic fields induced in each wire produce the strongest force upwards or downwards.

AWESOME

Two copper wires have detached from the speaker cone, can I reattach them ? It looks like they were originally glued to the cone. The speakers are Tannoy 633.

Nice💯

grouse video johan have learned so much from you already just wondering i have a fender bassman and it has greenbacks in it. i would love to know exactly what that means. what makes it a greenback shorly its not just a colour thing. just trying to understand my amp better. cheers johan your the best. there jensen if that means anything

Esmeulon - Gostei .

@Where is the next clip?

very interesting video btw you sound very like the officer crabtree in allo allo :D

I've always wanted to know how a magnet fucks a coil Without joking, great video!

I feel like this would be a great South Part episode...