I am familiar with the "you can't just plug in any speaker and expect it to sound good" angle. So if that's all you can provide, please refrain from doing so, as well as refraining to insist why it is the only answer. It's not. If Eminence can do it, so can someone here I'm sure. My cab is a 8 ohm 350 watt fender pro series 115. I love it. I have customized it so I do not want something else. I want it to have more headroom, that's all. So I would like to replace the stock 350 watt speaker with a 500 - 600 watt speaker. The interior dimensions are 22.5 x 16.75 x 16.75 inches, giving me 3.65 cu ft of interior volume. It has two ports, round, 4" diameter by 6" long. It also has a horn I do not use taking up minimal space. It has two 2x4 supporting cross beams inside which reduces the interior volume by 0.12 cu ft, if that matters, and I'm sure it does - that's why I provided it. And 1.5" thick sound absorbing batting on 80% or so of the interior walls. Tolex cover. I have searched the internet extensively, I have even attempted the free programs out there but I can't make heads or tails of what the results are telling me, nor if I even know what the numbers really mean. And I know I can ask Eminence, but I don't want to be limited to one brand. And I've been told that Eminence is not always a good choice for bass applications. What I need is for someone to suggest a few speakers that might work for me, even if you think Eminence IS the right choice. If someone can provide about three examples or so, of speakers from lowest priced to highest, that would be great. As I already pair it with a 210 cab with lots of mids and attack, I would like the 115 to cover the warm low end frequency spectrum without mud. So clear, deep lows I guess is the best way I can describe it. Thanks in advance!