Best SQ option?

[lestercressey]

I have a Pioneer mvh-2300nex HU, Alpine X-series 120w x 4 amp w/matching components & coaxials in front. KTA-450 (bridged) 100w x 2 w/Pioneer Z-series coaxials in rear. NVX 1000.1 amp w/ DC Audio sub in ported & tuned box in a 2012 Silverado Crew Cab. I've had serious SQ issues, blown many speaker setups & I'm still not impressed with system. Tried tuning by ears, voltagen & bought the DD-1 & think it sounds best when set by ear. HU has network mode, (running standard now) & auto EQ measuring. Checking w/DD-1 I have found distortion at 4khz at v.26 (goes to 40) but at 1k & 40hz no distortion.
I would think this setup would sound pretty awesome but not happy with it.
Also running an Epicenter & Line Driver.

Should I delete rears & let that amp run tweets & go network mode or am I missing something?

 

[shane_3800]

Where are the speakers? In the doors?
It's likely you need to make enclosures in the doors.

 

[Bay 13]

Maybe a diagram will help, what I read is your bridging normal speakers which will destroy them.

 

[shane_3800]

Maybe a diagram will help, what I read is your bridging normal speakers which will destroy them.

The OP has not responded but alas he is running them correctly.
This is why it appears to be an enclosure issue.
Enclosures make more difference than electrics.