ok, so i picked up an all tube 200watt fender studio bass power amp from a friend for next to nothing. it's got great tone with some slight growl and i've loved it for 3 years. never had any issues other than replacing the 2 of the 6 tubes as they had begun to put out less. i'm now in the market for a new cab rig so i take my head into some guitar shops to test out different cabs and see how they sound with my head. here's the issue. my head was probably pulled from a 1x15 combo that fender made and it appears that it is only wired for an 8 ohm load. meaning that i'd have to get an 8 ohm cabinent to compliment it. my needs. i need more than just a 1x15 and more than just a 4x10, though these would be great in combination, i know that i cannot just chain them together either. i need volume, warm vintage sound, and i have a low budget. my max to work with right now is a brand new 1x15 ampeg cab i could barter and an addtional $300-$500. most all cabs that would fit my needs run at 4 ohms! i've been contemplating building a cab, cost efficient and could work. just not sure if i could wire it at 8 ohms, plus i would need some help as i am only versed in the carpentry side of this solution. i'm wondering if a 4ohm cab could be easily rewired for 8ohms, or if that would just be crazy talk. please help! i'd like to keep this power amp as i've grown attached to it. thanks!