At the risk of rambling, here is my problem, and options that I am exploring, so stay with me now. I own a GK1001RB an an 8 ohm Goliath III 4x10 cab. I bought the gear used, and somehow managed to blow all four speakers while at a gig. I either bought an abused cab, or I grossly underpowered the thing (my speculation). So, after going to Bass Central in Orlando, FL, I was exposed to a variety of options. My long term goal is to go modular: preamp, poweramp, cab. However, given the expense, I need a temporary cost-effective solution to get me back in the game. I have about two weeks. Here are my thoughts: (1) SWR replacement speakers are $130 each. If I buy these, then I will rewire the 8 ohm cab to 4 ohms. Is this recommended? How would I do this? (2) If I don't rewire it and buy a second 4x10 cab at 8 ohms, would it be in my interests to use an 800 watt power amp in addition to my GK head to beef up the signal? [I just bought a Mackie FS M800] (3) I have a 400RB. Should I use that with my Mackie to get the correct power/ohm match to a 4 ohm 700 watt cabinet? (4) I played through an Eden 410XLT at 4 ohms using my bass. I'd get it, but it costs $850. Is it worth the money? (5) How do I add ohms with respect to power? How can I tell when I am over- or under-powering my speakers? (6) Sell everything and buy an Ashdown. What do you think?