Hi, I'm wondering if anyone can give me a bit of help with a loudspeaker class practical - at the moment I can get my class to build a basic loudspeaker, but I half-remember doing this on a course a few years ago and then linking it up to a radio and playing actual music through the one we'd built. It was pretty quiet but really impressive and I know the kids I teach would really love it...the problem is I don't have the "technical" knowledge of how to actually link the home-made loudspeaker to a radio to achieve this (I know it might be really simple, but it's not something I've needed before, so I just don't know!). The method we use to make the loudspeaker is to cut a circle in a piece of card, put a flattened bun case in to the centre of this hole and sellotape it to the card in 4 places, sellotape a small coil of wire over the centre of the bun case and place small powerful magnets on either side of the coil of wire. Then, connect the two stripped ends of the coil of wire to a signal generator (which is attached to a loudspeaker) and the students can hear a sound played through their loudspeaker. So the speaker we build works but I think I basically don't know the name of the type of cable we'd need to use to connect the two ends of wire from the speaker to the single "socket" (sorry this is probably the wrong word) that a "real" loudspeaker goes into in a radio, and so I don't know where to find/buy one. Any advice/answers?