hi guys,

my set up is: denon pma1500 amp, pro-ject debut III turntable, and polk audio lsi9 stand mount speakers...

when i play vinyl the speakers, the actual cones are moving in and out a lot, but not from the music, even in between tracks, the lead in and lead outs... the LP's are in excellent condition, and you cant really hear any surface noise...

is this normal? i was just a bit concerned i might have got my set up wrong or something. can this damage the speakers??