Mazda CX-3 Speaker Size

Dashboard Speaker

Front Door Panel Speaker

Rear Door Panel Speaker

Cargo Area Speaker

Mazda CX-3 Speaker FAQ

What speakers does the Mazda CX-3 have from the factory?

The Mazda CX-3 runs a four-location speaker layout. You get 1 inch tweeters in the dashboard, 6.75 inch midbass drivers in both the front and rear door panels, and a 5.25 inch subwoofer tucked into the cargo area. That cargo subwoofer tends to surprise people. It handles low-frequency reinforcement but the enclosure conditions back there are far from ideal, so bass performance can feel thin or inconsistent depending on the trim level.

Which speakers should I replace first in the Mazda CX-3?

Start with the 6.75 inch front door panel speakers. They carry the majority of the midrange and upper bass frequencies that define vocal clarity and instrument presence. The rear 6.75 inch speakers share the same size but should be considered secondary to the fronts. A reasonable upgrade path would be component or coaxial speakers rated between 50 and 100 watts RMS with sensitivity around 88 to 92 dB. The dashboard tweeters matter more than people assume, especially if you run a component set. Getting those matched properly to your front doors makes a noticeable difference in staging.

Can I replace the 6.75 inch speakers in the Mazda CX-3 with standard 6.75 inch aftermarket units?

Generally yes, though fitment can vary. Most aftermarket 6.75 inch speakers should physically fit the Mazda CX-3 door panel openings. Look for mounting depth compatibility, ideally under 2.75 inches, since door panel clearance on the CX-3 tends to be limited. Impedance should be 4 ohms to stay compatible with the factory head unit if you are not running an external amplifier. Some adapters or trim rings may be needed depending on the brand.

What should I know about replacing the 1 inch dashboard tweeters in the Mazda CX-3?

The 1 inch tweeters in the Mazda CX-3 dashboard handle frequencies roughly above 3,500 Hz. Replacing them with aftermarket silk dome or aluminum dome tweeters in the same size should be feasible, but the crossover point matters a lot here. If you are running a full-range coaxial setup in the doors, those tweeters may overlap in frequency range and create some phase issues. Component sets with a proper passive crossover network tend to handle this more cleanly. Budget at least 20 watts RMS handling capacity for the replacement tweeters to give yourself some headroom.