Mercedes-Benz GL450 Speaker Size

Front Door Panel Speaker

Rear Door Panel Speaker

Rear Roof Speaker

Center Dash Speaker

Cargo Area Speaker

Mercedes-Benz GL450 Speaker FAQ

Which speakers should I replace first in my Mercedes-Benz GL450 for the biggest sound improvement?

Replace the 6.5 inch front door speakers first. These handle most of your music's midrange and vocal frequencies - probably 60-80% of what you actually hear while driving. The front doors typically get 25-50 watts from your GL450's factory amplifier, so upgrading here gives immediate impact. After that, consider the rear 6.5 inch door speakers since they support the overall soundstage. The cargo area 8 inch speaker might be tempting but... honestly, front doors first.

What's the difference between coaxial and component speakers for my GL450's door panels?

Coaxial speakers combine the woofer and tweeter into one unit - easier installation, typically 4 ohm impedance, handles roughly 20Hz to 20kHz. Component speakers separate the tweeter from the woofer, which means you can position them differently for better staging. Your Mercedes-Benz GL450 already has separate 1 inch tweeters in some locations, so components might work better since you're not doubling up on high frequencies. Components usually need crossovers though, and mounting gets more complex.

Can I upgrade just the cargo area subwoofer in my GL450 without touching other speakers?

Yes, but the 8 inch cargo speaker probably isn't a true subwoofer - more like a full-range driver handling bass duties. Replacing it alone might create frequency gaps since it likely crosses over around 80-120Hz with your door speakers. If you install an actual subwoofer here, you'll need to consider the GL450's factory amplifier output and possibly add a separate amp. The cargo location gives decent bass response due to the enclosed space, but... integration with existing speakers becomes tricky.

Why does my Mercedes-Benz GL450 have so many 1 inch tweeters, and should I replace them?

Your GL450 uses multiple tweeters to create a wider soundstage and compensate for the large interior space. Front door, rear door, and rear roof tweeters handle frequencies above 3-4kHz typically. Replacing them depends on your component speaker choice - if you go with coaxials that have built-in tweeters, you might want to disconnect or replace the factory ones to avoid harsh highs. The 1 inch size limits power handling to maybe 10-20 watts, so they're more about dispersion than volume.

What about the 3.5 inch center dash speaker - is it worth upgrading?

The center dash speaker typically handles dialogue and center-channel information, similar to a home theater setup. At 3.5 inches, it's probably crossed over around 200Hz on the low end and maybe 8kHz on the high end. Upgrading it can improve vocal clarity, especially for phone calls or navigation prompts in your Mercedes-Benz GL450. But honestly, if you've already upgraded your door speakers, the improvement might be subtle. The mounting depth and available space usually limit your replacement options anyway.