Here is another idea,
I tried to mount amp under rear deck but unfortunately is slightly bigger, so I figured I will mount it on the sub box.

But here is what I thought, since I will keep my stock amp and sub, you think I could use rca cables for aftermarket sub to power up my bose sub?



I see there output sub + and -,
is that all I need? If yes, isn't pair of RCA cable has + and - in each wire?

 

You question is, can you use your new amp to also power your BOSE sub?

Dont know BUT there is no point if you have a new sub. It would also take away power from your new sub (your amp is weak, dont try to push it to hard or you will kill it). You should really post this in the A/V sub-forum

 

No, I was wondering if I can use the same RCA audio cables to put audio to aftermarket and also to BOSE amp, so that BOSE SUB will work too

 

no.

since you replaced your deck, use the subs dedicated pre out. you will get the cleanest signal and maximum sq this way.

i believe all the bose speakers are individually amped, including the sub. if you were keeping your radio stock, then you could purchase a line out converter, or a hi/lo (same thing 2 diff names), tag the 2 wires for the sub for your signal from there, and then out into the aftermarket bass amp, but since you replaced the deck, you wont be needing to do this.

 

Just wanted to show my sub after all the installation





To me 8inch was perfect, do not need to upgrade the sub to 10 or more

 

Weird setup buddy. Not understanding the way you got it firing. Hide those wires son!!

 

Why is it weird Dad?

 

Why towards the side boy?

 

 

More trunk space and when sub faces wall it sounds better grandpa

 

Grandpa? If you say so....