Question regarding amp wiring

[Sequoia_Bass]

I have 2 ampere audio 3800.1s 

one is currently working the other needs repair. 
 

i have one wired to .35ohms on single sub

 

if i had two ,one wired at .7ohms on each coil (not strapped) would it be more power than single amp? 
 

If so what is the rough increase in output and how did you figure that out. (I'm eager to learn) 
 

i'm debating on fixing the other amp to run two ampere 3800s on the single sub or buying a single larger amp to wire low. 
 

I would just repair amp and find out, but wanting to save some money/time/hassle. 
 

any input is appreciated