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Sonicp9 · 06-20-2016, 04:30 PM

Hey guys,

So I bought a 10 inch alpine subwoofer that is putting out 300w RMS and I plan on using my old mtx monoblock amp that I had from my previous car (the mtx subwoofers were just too big to fit in the trunk of the FRS).

I ordered a line out converter and some metra harnesses off amazon (the 70-1761 and 71-1761), with the hopes of creating a custom plug-n-play harness so I can connect the amp with RCA's and not have to do any splicing.

I am not sure anymore if this will work though. At first I was thinking of taking the rear speaker wires from the head unit and using those for the line out converter. That would, however, disable my rear speakers I believe. The rears are pretty crap anyway, but I was wondering if there is a way of doing this without needing to disable any of the speakers and avoid any wire splicing if possible.

Thanks!

06-20-2016, 04:30 PM	#1
Sonicp9 Member Join Date: Nov 2015 Drives: 2016 Raven FR-S Location: Toronto, ON Posts: 43 Thanks: 6 Thanked 19 Times in 11 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Need help installing subwoofer with amp to oem HU and sound system (2016 FRS) Hey guys, So I bought a 10 inch alpine subwoofer that is putting out 300w RMS and I plan on using my old mtx monoblock amp that I had from my previous car (the mtx subwoofers were just too big to fit in the trunk of the FRS). I ordered a line out converter and some metra harnesses off amazon (the 70-1761 and 71-1761), with the hopes of creating a custom plug-n-play harness so I can connect the amp with RCA's and not have to do any splicing. I am not sure anymore if this will work though. At first I was thinking of taking the rear speaker wires from the head unit and using those for the line out converter. That would, however, disable my rear speakers I believe. The rears are pretty crap anyway, but I was wondering if there is a way of doing this without needing to disable any of the speakers and avoid any wire splicing if possible. Thanks!