Mercedes-Benz S55 AMG Speaker Size

Rear Door Panel Speaker

Front Door Panel Speaker

Rear Deck Center Speaker

Mercedes-Benz S55 AMG Speaker FAQ

What speakers should I replace first in my Mercedes-Benz S55 AMG for the biggest sound improvement?

Replace the front door 6.5 inch speakers first. They handle most of your music's midrange frequencies and vocals. The front positioning means you'll notice improvements immediately since sound travels the shortest distance to your ears. Component speakers around 75-100 watts RMS work well here. The factory speakers might be running 4-ohm impedance, so matching that prevents any amplifier issues. Once the fronts are upgraded, the 1 inch tweeters become your next priority - they add clarity to high frequencies that coaxial speakers sometimes struggle with.

Can I install 6.5 inch speakers in the rear doors of my Mercedes-Benz S55 AMG from all model years?

Not exactly. The rear door configuration changed partway through production. Models from 2006 can accept 6.5 inch speakers directly. Earlier S55 AMG models use 5.25 inch speakers in the rear doors plus separate 1 inch tweeters. You'd need mounting adapters or custom brackets to fit 6.5 inch speakers in the smaller factory locations. The tweeter placement might also interfere with larger speakers. Sometimes the door panel depth varies too. Check your specific door cavity measurements before ordering - rear doors tend to have less clearance than fronts.

Should I choose coaxial or component speakers for my Mercedes-Benz S55 AMG?

Component speakers typically sound better because they separate frequencies more precisely. The tweeter handles 3kHz and up while the woofer covers everything below. Your S55 AMG already has dedicated tweeter locations in the front doors, which suggests it was designed for component systems. Coaxial speakers put everything in one unit - convenient but the tweeter positioning isn't always optimal. If you're keeping the factory amplifier, make sure your new speakers match the power output, probably somewhere around 50-80 watts RMS. Component systems need crossovers though, and finding space for those in the door panels can be tricky.

What's the purpose of the 8 inch rear deck speaker in the Mercedes-Benz S55 AMG?

That 8 inch speaker provides low-frequency support and fills the cabin with bass response. It's positioned in the rear deck center where it can use the trunk space as a natural enclosure. Some configurations label it as a subwoofer, others as full-range - depends on how the factory crossover routes frequencies to it. If you're planning a complete system upgrade, this speaker becomes less critical since aftermarket subwoofers usually outperform it. But for basic improvements, upgrading this to a quality 8 inch driver around 100-150 watts can add surprising punch to your Mercedes-Benz S55 AMG's sound without major installation work.