not satisfied, not enough thump

Wire your subs like this.  There is no need to just run one coil per sub. Also what type of encloser do you have, amp power  wire size and is this run through a line converter or after market deck?

2ga JL wires

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06kickercvx15 2ohm dvc (just 1)

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Got ya thought you had 4. After reading you post again i see where i miss read it.  Wire the sub in series at a 4 ohm load or you can use one coil as said above. With 2ga. Power wire you should be able to keep the amp more than enough current and we are not talking much power. Are you using the D bass boost on the deck? Do you have the bass cranked on the deck? What type of enclosure is it in, Sealed or ported? custom built or prefab?

Also dont worry so much about how high you have the gain turned up. The gain is not a volume knob it is simply to match pre-out of the source.

Why you think i said the SUB not the SUBS? You can wire the SUB in series with both coils of the sub giving you a 4 ohm load, Use one coil giving you a 2 ohm load or wire the SUB parallel 1 ohm load (not supported by your amp). Now if you would answer the questions above so we can figure out your problem. Most likely the enclosure or user error on set up of the amplifier or deck.

yea down to 4 is where it is now but i'm tryin to get the max out of it cause i know it's not a lot. i try to keep my bass on the deck at or below -5, the sub around +5 and i like to crank it up. i do use the loud but i don't know bout the D Bass Boost. i got it in a sealer prefab and it's not that big. looks like those JL boxes, LOOKS.