2 Kicker 10 inch subwoofers a 400watt amp/ car audio install for my nephew in his 2012 Honda Civic. - YouTube
JL Audio Stealthbox® Custom-fit fiberglass enclosure with 10" W6v2 subwoofer Fits 2006-up Honda Civic Sedan at Crutchfield
HONDA ACCORD 2008-2012 SUB ENCLOSURE - SRQ Customs
DIY subwoofer audio install on my 2008 Honda civic - YouTube
Amazon.com: NuIth Add an Amplifier Subwoofer Interface for Honda Civic Accord Acura 2008-2017 RCA 2-Channel Line Out Converter w/Remote Turn on Wiring to Factory Radio Stereo Update Sound System : Electronics