speaker ohms

The total impedence of the two subs when ran in parallel with the amp is 1.6 ohms.  I would recommend not doing this, though.

Although the amplifier would see a nominal impedance of 1.6 ohms mono (or .8 ohms per channel), it would be the same as mixing speakers with different impedances and will result in one speaker playing louder than the other. Remember electricity is lazy and will always follow the path of least resistance.

When wiring two or more speakers to the same channel(s) of an amplifer (excluding speakers playing a different range of frequencies such as 1 woofer, 2 midrange drivers, and a tweeter through a passive crossover network) you want to connect each speaker (set of voice coils) in the same manner. 

Using two DVC woofers at 4 ohms per voice coil as you described, you should connect the voice coils, then speakers in one of the following ways depending on the desired nominal impedance.

series both pairs of voice coils, then series the two speakers = 16 ohms

i used to run the system at 1ohm and it blew 1 of my speaker just the paper part

so what's the worst that could happen if i do it again

i had it like that for about a week it sounded really nice thats why i want to do it again

just not loud enough to blow something