Buick LaCrosse Speaker Size

Rear Deck Lid Speaker

A-Pillar Speaker

Center Dash Speaker

Front Door Panel Speaker

Rear Door Panel Speaker

Buick LaCrosse Speaker FAQ

Which speakers should I replace first in my Buick LaCrosse for the biggest sound improvement?

Start with the 6.75 inch front door panel speakers. These handle most of your midrange frequencies and vocals, so upgrading them first gives you the most noticeable difference. The front doors typically see 50-75 watts RMS in the LaCrosse, making them ideal candidates for aftermarket components. Your rear 6 x 9 speakers in the deck lid can wait - they're mainly for fill and ambiance. The 3.5 inch center dash speaker might seem important but... honestly, it's more about dialogue clarity than overall sound quality.

Can I install component speakers in all locations of my Buick LaCrosse?

The front and rear door panels accept component speakers, but you'll need to verify crossover mounting space. Your LaCrosse already has 1 inch tweeters in the A-pillars, which could work with a component system if the crossover frequencies match - typically around 3000-4000 Hz. The 6 x 9 rear deck location supports components too, though most people stick with coaxials there. Center dash and A-pillar locations are limited by space. Component systems usually deliver better imaging in the LaCrosse because you can position tweeters properly.

What's the difference between coaxial and full-range speakers for my Buick LaCrosse?

Coaxial speakers have separate tweeter and woofer elements in one frame - you'll see the tweeter mounted in the center. Full-range speakers use a single cone to reproduce all frequencies, which sounds... adequate but not spectacular. In your LaCrosse's 6.75 inch doors, coaxials typically handle 60-20000 Hz while full-range might struggle above 15000 Hz. The 3.5 inch locations work better with full-range because there's barely room for a proper tweeter anyway. Coaxials give you better high-frequency response, but full-range speakers can sound more cohesive if you're not picky about crisp highs.

Should I replace the 1 inch A-pillar tweeters in my Buick LaCrosse?

Only if you're installing a complete component system in the front doors. These tweeters probably handle frequencies above 4000 Hz and connect to your front door speakers through the factory crossover. Replacing them alone won't do much - they need to match your new door speakers' impedance and power handling. Most aftermarket component sets include their own tweeters anyway. If you're keeping factory door speakers, leave the A-pillar tweeters alone. The positioning in the LaCrosse is actually pretty good for imaging.