How do i know when my speakers will blow?

Rob

Member
http://guitars.musiciansfriend.com/product/Peavey-Vypyr-30-30W-1x12-Guitar-Combo-Amp?sku=482909

this is the guitar amp i have, i can play my ipod through it. Im just scared to blow the speaker, but i wanna know how loud this baby can play. When do i know when the speaker will blow? I dont want to damage it.
 
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