Infiniti QX70 Speaker Size

Front Door Panel Speaker

Rear Door Panel Speaker

Infiniti QX70 Speaker FAQ

What speakers should I replace first in my Infiniti QX70 for better sound quality?

Replace the front door panel speakers first. Your Infiniti QX70 has 6.5-inch speakers in both front and rear positions, but front speakers handle most of the vocal range and stereo imaging. The front location typically gets 60-70% of the amplifier power anyway. You can install either coaxial or component speakers - components will give you better separation between tweeters and woofers, probably worth the extra effort if you're serious about sound quality. Rear speakers mostly fill in ambient sound, so they're secondary priority.

Can I mix coaxial and component speakers in my QX70?

Yes, but keep the same type in front positions. You could run components up front and coaxials in the rear doors - this actually makes sense since rear speakers don't need the precise imaging that components provide. The 6.5-inch size is consistent throughout your Infiniti QX70, so mounting shouldn't be an issue. Just make sure impedance matches (usually 4 ohms) across all positions. Some people even skip rear speakers entirely when running good front components... depends on your listening preferences.

What's the difference between the speaker types available for QX70 door panels?

Coaxial speakers have the tweeter mounted directly on the woofer cone - simpler installation, one piece per location. Component speakers separate the tweeter from the woofer, usually requiring crossover networks and separate mounting. Full-range speakers (available for rear positions) handle the entire frequency spectrum without a dedicated tweeter. In your Infiniti QX70, components will give you better soundstage width and more precise highs, but coaxials are easier to install and still offer good improvement over factory speakers. The choice depends on whether you want maximum performance or convenience.

What power rating should I look for in 6.5-inch speakers for the QX70?

Look for speakers rated between 50-100 watts RMS. Most aftermarket 6.5-inch speakers handle around 75-90 watts RMS, which works well with factory amplification in the Infiniti QX70. Peak power ratings (200-300 watts) don't matter much for daily driving. Higher sensitivity ratings (90+ dB) will give you more volume from the same power... important if you're not adding an amplifier. The factory system probably puts out 15-25 watts per channel, so even modest aftermarket speakers will use that power more efficiently than the originals.