I am trying to help a friend restore an old record player/ am fm radio. Does anyone know a good forum for discussing this type of thing? My questions are many, but we'll start by asking... this vintage machine has 4 speakers, two 6" (5.5"?) Woofers and two 3" tweeters with big crossover caps in series with the tweeters... which I understand, but... They are all blown. Is it necessary to replace all 4 speakers or could I use 2 speakers (correct impedance) to do the work of the 4? My question is not in regards to power handling or impedance. I'm capable of understanding that. I'm asking is it necessary to have woofers and tweeters? Guitar amp speakers seem to produce a broad range of frequencies just fine... Am I missing something? By the way, it's a 1965 Air Chief 13R10. Thanks!