I feel stupid at the moment, but we have to choose what we do as a school project for next week. The most popular ones are an amplifier and a speaker. What’s the main difference between them? Can I use a speaker without an amplifier?
It’d be nice, if I would make my laptop’s and screen’s speakers sound a little higher. Do I need an amplifier + speaker to do that, or would only a speaker make that? Overall what would you choose to make as a school project from these two?
In: Technology
Technically you can make a speaker’s cone move without an amp. If you wire a speaker up to another identical speaker and then physically push on one of the speaker’s cones…..it will make the other cone move. Why?
Because speakers and microphones are basically the same thing. You have a coil of wire attached to a cone next to a magnet. When you pass an alternating current through the coil, it creates a magnetic field that interacts with the magnet. When the voltage of the signal is positive, the coil will move away from the magnet. When it’s negative it will move towards the magnet.
The cool thing is though…it works the other way too. If you move the coil/cone relative to the magnet, it will *create* a signal inside the coil. (This is literally what a microphone is).
Not sure if any of that helps.
Latest Answers