Well, I've been playing for a year or so now, and finally decided i need to upgrade from my clunker combo. I'm using an Ampeg G100 (yeah, the regular guitar amp... ) which i got for free with a blown driver and the amp needed some help to get working well again. I've been using it with a 10" that came out of some Fisher speakers; cleaned up the amp board and replaced a few leaking caps. Yeah, it sounds like dirt... but it works and it got me started. I play a Peavey Milestone III which i got for an awesome price (free) and i have a cheapo Squier P bass but i play the Peavey more often. Just looking for a good sound... So, i'm good with electronics, and loudspeaker design/construction so i'm planning on building a cabinet and a preamp. The preamp will be basic, just pre vol - three band tone controls - master vol. Its an opamp based design. I'll probably add a compressor, maybe a used dbx or a behringer. The cabinet will consist of a 15" Eminence 3015LF which seems to be the most used for diy cabs around here. Planning on 4.5-5ft^3 ported, tuned to 45hz or thereabouts. Next inline will be an Eminence Beta 8" in its own selaed compartment, and i haven't decided if i'm going to add a horn or not. I'll leave space on the front baffle to add one if i want. I am going to use an active crossover, the Behringer CX2310. I could design a passive xo easily enough, but active gives me much more control over the sound of the cab. So i'll need up to three channels of power. I have a Hafler P125 (200w into 8r bridged) or a Hafler P230 (360w bridged) to run the 3015LF, and i'm going to build two LM3886 based chipamps (50w) into the preamp case for the mid and tweeter (if i use one). Signal chain would be guitar > diy preamp > compressor > active xo > power amps > two or three way cab. Does anyone see any potential holes for me to fall in, or anything else i should consider adding? Thanks!