![]() ![]() Now for my questions regarding the selection of the front door and dash corner speakers. For the center dash speaker there is no affordable Focal alternative, so I bought JBL Club 322F. For the rear doors in my Mazda3, I already bought a pair of coax Focal RCX-165. I had them in my previous Mazda6, where they produced an excellent sound for many years. Replace all these by 4ohm ones might be a slight problem for the door speakers only, because only these ones have a different impedance of 1.25ohm according to the Mamanual (all the other ones have an impedance of almost 4ohm). Third, deal with the resistance/impedance of the stock speakers. For the front and back door speakers I will have to do some serious dremeling and soldering, for the three dash speakers replace the harnesses by spade terminals and produce custom-made brackets for the new 45mm dash corner midrange/tweeters. Second, preserve the original wiring, harnesses and brackets as far as possible. This means I will have to deal with the Bose amp not sending the full range frequencies to the different speakers. ![]() ![]() First, I don’t want to replace the Bose amplifier. However, this replacement has some key principles. This means a DIY upgrade of all 7 speakers, including some basic noise damping of all the doors. I’m planning to replace all the stock Bose speakers in my 2014 Mazda3. ![]()
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