let me know if i posted this in the wrong place... if so, sorry. i connected my Peavy Mark IV Bass Head (120 VAC, 60Hz, 800 Watts, 2-4 OHMS) directly to my Mac with the intention of recording in Garage Band. as soon as i turned up the volume on the bass head i heard a pop from my external speakers then silence (from all programs: Garage Band, iTunes, iChat, ect). at first i thought it might have blown out the external speakers but they still work when i connect them to my ipod and such. i know practically nothing about computers and am not sure if it's even possible to fry a sound card this way... but i guess it makes sense. any suggestions as to what the problem might be (or possible solutions) would be greatly appreciated. thanks.