Help Clarifying Input/Output

Hi,

I'm running the stock head unit. I bought the RCA adapter from Amazon that gives you 1 RCA output and remote signal. I was given a brand new Sound Ordnance, M-4050, 4 channel amp which I plan to bridge so I can run 2 subs. The manual tells me to bridge by connecting negative from channel 1 with positive from channel 2 (rears). The same goes for channel 3 and 4 (fronts). The manual also tells me I need to run a y-splitter for the front/rear inputs. My problem now is that the EQ for the front only has HPF or FULL frequency.

Questions:

If I bridge (according to manual) does everything just magically fix itself? or am I running either HPF/Full for one of the subs?

If so, how can I bridge so the signal runs off the rear EQ which is a LPF?

Thanks for your help

 

I got my questions answered. Apparently Sound Ordnance is crutchfields brand. They were able to answer my questions.