i haven't had to buy a new amp in about five years, and my head is still fine, but i recently found a empty 1X15 cab in the dumb, in fine condition, and i need to replace the org. speaker. The back of the head has 4ohm wattage and 2 ohm wattage, i was wondering should i get two 8ohm parralled wired, or two 4 ohms? i was looking at possaibly getting Peveys Blue Marvels 4 ohm speakers. but i haven't heard anything about them. if someone could either suggest a better speaker of same ohms and wattage please let me know, thanks.