Infiniti Q40 Speaker Size

Front Door Panel Speaker

Rear Door Panel Speaker

Infiniti Q40 Speaker FAQ

What speakers should I replace first in my Infiniti Q40 for the biggest sound improvement?

Replace the front door panel speakers first. The 6.5-inch front speakers handle most of your music's critical midrange and vocal frequencies. Since you're sitting closer to the front speakers in the Q40, upgrading these will give you the most noticeable improvement. Look for component speakers around 50-75 watts RMS if your budget allows - the separate tweeter placement gives much better stereo imaging than coaxials.

Can I install component speakers in both front and rear doors of my Infiniti Q40?

Yes, both locations accept component speakers. However, the rear door panels might require some creativity for tweeter mounting since most aftermarket component sets assume front installation. You could mount rear tweeters in the sail panels or use coaxials in the rear instead. The factory wiring should handle most aftermarket speakers up to around 100 watts, though checking impedance compatibility is wise.

What's the difference between coaxial and component options for my Q40's 6.5-inch speaker locations?

Coaxial speakers put the tweeter directly on the woofer cone - simpler installation but the sound comes from one point. Component speakers separate the tweeter, usually mounting higher in the door or dash area. This creates better stereo imaging and frequency response in the Infiniti Q40 because highs and mids aren't competing from the same location. Components typically cost more but sound noticeably better if positioned correctly.

Should I replace all four 6.5-inch speakers in my Infiniti Q40 at once?

Not necessarily. Start with the fronts since they do most of the work. Many people actually prefer keeping rear speakers more subdued anyway - you might find coaxials work fine in the rear even if you go component up front. If you're planning a full system upgrade later with an amplifier, then matching all four speakers makes sense. But for a basic improvement, front speakers first, then see if you even need to touch the rears.

What power handling should I look for in 6.5-inch replacement speakers for the Q40?

The factory head unit probably puts out around 15-20 watts RMS per channel. Most quality aftermarket 6.5-inch speakers handle 50-100 watts RMS, so you're not likely to overpower them. Focus more on sensitivity ratings - look for speakers around 88-92 dB sensitivity to get decent volume from the factory power. If you plan to add an amplifier later, then higher power handling becomes relevant, but the Q40's door space might limit your options for larger magnets anyway.