Speaker cable is used to connect the speaker outputs on audio devices such as a receiver or amplifier to the inputs on the speaker(s).
A speaker is an audio output device that is used to relay sound from a source. The speaker's volume can be controlled from the source.
Speaker cable can be used bare or with pin, banana, spade or ring terminals.
A speaker selector can be used with one or more amplifiers. Multiple speakers can be used by connecting into a speaker selector. It allows a radio or outlet device to be played on multiple sources.
Quotation marks are used to show the exact words of a speaker.
There is this pane at the end of the slide. It can be used to take notes used by the speaker.
A speaker selector can be used with one or more amplifiers. Multiple speakers can be used by connecting into a speaker selector. It allows a radio or outlet device to be played on multiple sources.
Other things that speaker wires can be used for is power transmission. Speaker wires have negative and positive glued together in the insulation, it isn't intended for this purpose but can work.
You can download the powerpoint file with the TED speaker used for presentation at ted.com.
speaker
They are usually used as a door speaker is various upper sound system cars.
One can find old used speaker boxes for parts at a local electronics appliances shop. One can also buy used speaker boxes for parts online from a website like eBay.