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  1. 2014-2018 Mazda 3 Skyactiv Audio & Electronics
    I installed some 6.5" Polk dxi651 on my 14' iTouring with the non-bose system and they have less bass than the stock speakers. I'm not great at soldering, but they seem to produce sound -- I'm just wondering if I screwed something up installing them or these speakers kind of suck or they really...