I want to add a subwoofer into my 4dr civic ex, without change out the navigation. I want to keep the factory navigation and use it. Is there any possible way that I would be able to do this.

 

you mean replacing the sub you have now?

 

Yes it can be done, you just tap into the subwoofer signal in the trunk with a hi/lo converter. I did it, it keeps factory sub controls and is decent sounding. Take out your factory subwoofer to create a "port" of sorts.

 

I'm not sure if this is the right thing to do. I was planning to buy this and buy a 10" and a amp. I need more advice.

http://www.collegehillshonda.c...3.jpg
Bass System Kit
The bass kit adds smooth, deep bass to the factory audio system. The kit includes two high-power, 6.5" lightweight speakers that are manually adjustable for both power and frequency. Price includes required attachment.
Part# 08A54-SNA-100
Attach# 08B54-SNA-100
Application: All 06-08 Civic 4dr except GX & Si
Your Price: $268.80
Retail Price: $364.00
Status - Available



http://www.collegehillshonda.c...m.pdf

 

dont get the bass system.. its a waste of $