OK well yesterday I picked up some capacitors and wired them in parallel with the bass blockers (overpriced capacitors) which raises the total capacitance, which lowers the cutoff frequency for the high pass filter it creates.
Before, only Bass blockers
3.5" dash - 14uf 2.8khz
5.25" rears - 50uf 800hz
Now with 100uf caps. In parallel
Dash - 114uf 348hz
Rear - 150uf 265hz
The sound is by far better before they sound OK but still kind of off and peaky. Of course now that I looked at the frequency cut off I can understand, they sound great now with a nice overlap with the Bose subs and they come together perfect, I also tweaked the amps settings again and have the Bose kicking strong, I just need to chase some door rattles.
I had moved the amp up slightly owhich allowed me to put all the panels back on making everything look nice and stock.
I also changed the amps turn on wire, I had it connected to an accessory fuse, now it's on the pink wire which is the radios turn on signal, so now it stays on with rap power and chimes work just like stock.
I also connected the drain wire in a effort to reduce a slight background noise I get when the radios off, but it only helped a bit, in shure it has more to do with the fact I have the amp and line out converter at full gain, butt connectors, t taps, scotch locks and my ok-ish soldering lol
I also need to measure the door openings to see what's the biggest speaker I can put in the front, I was thinking of getting a bose sub from another car, also looking at new rears, 6.5", 6.75" or 7" if they fit well and the rms matches my amp)
Also need to get a new hu soon, nothing wrong with the factory but upgrading is always good