I've made many amateur moves, and not knowing what I'm really doing, and a lot of it is to do with not have real money, or knowledge of the subject. I picked up these cabinets off the side of the road, and decided to rebuild the speakers. The speakers were completely blown... even the X-overs. Everything except the tweeters (although they may stink). But the cabinets were so solid, and good looking I fell in love with the idea and the hobby.
So the 1st thing I did was found the replacement woofers that belong in the cabinet. Some may complain right here. Because these 'Prodynmic' speakers might be a mere wind, and a passing road-side scam sale of college students. Or White-Van speakers. However after replacing the woofers, than have performed very well, no one would complain about the Bass on these speakers. I can no longer find even the specs on these, if they were ever accurate.
The original design was 2-way... but I had decided to go 3-way.... (read why below)
The 2nd thing I did was replace the X-Over:http://www.parts-express.com/pe/showdetl.cfm?partnumber=260-152
Then the odd thing is.. The front grill and the wood had a spot for 3rd speaker, proving that this was in fact a cheap 'white van speaker'. But I was intent on rebuilding them to be better, so I filled the Midrange hole with-http://www.parts-express.com/pe/showdetl.cfm?partnumber=292-200
Its a sealed back speaker. I think that was wise. But just recently I still put a piece of wood, inside the cabinet between the woofer and the midrange, just to see if it would sound a little better. It did seem to give it more Bass, but Better... I dunno.
Oh... I forgot. I also have an L-Pad on the tweeter. But I'm tweaking it all the time, to try and get it to sound right, as well as the equalizer. I don't have real PolyFill on the inside of the cabinet, I actually have some ... forgive me... I have some 'Carpet Backing'.. it was what I had. I've heard that I can use wool, or even fiber glass. I believe it is a form of some kind of wool that was in the cabinet, but it was badly put in there originally, and it was very light, so it does not seem like wool.
currently to make my soundfield sound decent... I need my graphic equalizer like this:
The tweeters, may be junky... they are original, and not yet replaced. But when listening, the problem seems to be in other frequencies... the sound just doesn't pop out at you, unless you are in 5.1 mode with help from the friends (meaning the other speakers....)