hey everyone, i recently acquired an old peavey cabinet that can hold a 1 x 18" speaker. The older speaker was warn and destroyed, so i have been trying to conjur up a replacement one, and unfortunatly im not finding everyhing i need as far as information is concerned. So i basically had a question on where can i find speakers with the magnets of that size "18 inch", i have looked on ebay and amazon, my local guitar shops. I play bass, so this will need to be something compatible with a bass! and obviously my head will need to match the ohms on the speaker, or am i ok with getting a 4 ohm speaker and using an 8 ohm head? (i have a few heads that do both, and a few that do 8 ohm) appreciate the help!