I've just bought a GK MB150E for my theatre gig, thanks for all the good advice in here! So far I'm pretty happy, it's quite powerful for its size and seems to have some useful features. However, I'm already thinking about buying an extension cab to get a bit more oomph and also benefit from an adjustible tweeter. Suggestions? I was thinking either Aguilar GS 112 or Glockenklang Space Deluxe (the 1x12 cab with tweeter) or possibly Epifani. Anybody tried the Tech TLT 1x12? Seems all of these got power handling of at least 300W. Is it a bad thing that the GK can only deliver 150W max? (When running the internal speaker as well, is that correct?) And I guess if I switched off the internal speaker, that would go down to only 100W, right? Anybody see any problems there? Cheers.