The dish isn't concave enough either for audio purposes. It likely wouldn't work much better than a cardboard box!. Now, large salad bowls have been used with good success as an audio parabolic reflector. I'd take that 30" dish and use it as a bird bath out back or check the I-net for a modified LNC circuit project and make a radio telescope out of it... listen to Jupiter farting, Saturn burping, Venutian whistlers, etc. (I'm serious about the radio telescope thing!)