disc speaker magnet 1.Various kinds of Neodymium magnet 2.Best quality ... best price 3.Short lead time and all-round disc speaker magnet Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron ... the Neodymium magnets(Ndfeb Magnet)1.) Electro-Acoustic Field: Receiver, Speaker, Microphone, Audio alarm stage, Loudspeaker2.) Motor Field: Voice coil motor ...