Lets rip open a 15" speaker !

0:00 Why should you keep your levels flat?

Right folks, why should you keep your levels flat? In other words, when I say flat, that means on the green and poking a little bit into the red. Only a little bit into the red. Right, I shall explain why. This here is a 15-inch speaker. It's by a manufacturer called RCF and this little beauty is in EAW, Eastern Acoustic Works speakers and also RCF and Mackie. Maccy a while ago bought RCF, and then believe it or not, RCF bought it back off them. Right, okay, so what I'm going to do now, I can only do this once. If you listen by the way, can you hear that? That's basically saying that I'm an accurate speaker. What I'm going to do is I'm going to... Now, because it's broken anyway, I'm going to show you the speaker and what it's like inside. So we need to cut this. This was the broken speaker, wasn't it? It is now.

1:03 What we've got is the inside of it, which you can see here

What we've got is the inside of it, which you can see here. And what I need to do now is cut around this thing here called the spider. So if we cut around here, this is the bit that actually holds the bottom of the speaker to the magnet, which is underneath. We're going to snip a few things and et cetera, et cetera. We're getting there slowly. Right, a bit more there and bingo. What we're doing now, ah, a bit more there and a bit more there. Right, I can pull this out now. There you go. Right, what have we got inside there? We've got a magnet. We've got north and south, positive and negative. And where my knife is, there, that centrepiece there, that in there is where the coil goes, okay? Now then, here is the coil. This bit here. Now that's very thin as you can see and that's only got a tiny amount of space to go inside that speaker. Now then, if you imagine my hand here is the magnet. Now when you get a bass kick this moves up like that. When you get a big bass kick it moves quite far out of the magnets. And as soon as it gets out of the magnets...

Basically, it superheats. It gets very, very hot if it stays out of the magnet too long and gets too hot, then this wire in here will short, blow, gone, and basically you've got a buggered speaker, okay? Now that I think about it logically, if you're turning your amplifier up full blast, giving it loads of bass, this is doing this, comes out, blown speaker, okay? Does that sound logical to you? That's why if you keep it nice and flat... Good sound and it's just doing this, small movements, then your speakers theoretically should last a long time. Stay tuned.

This transcript was produced automatically from the audio of the video and may contain mistakes.