Mercedes-Benz R320 Speaker Size

Speaker size, type, and location chart for Mercedes-Benz R320 models from 2007 to 2009 production years.

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Front Door Panel Speaker

YearsTypeSize (inch)
2007 - 2009Tweeter1
2007 - 2009Midbass / Full-Range6.5

Rear Door Panel Speaker

YearsTypeSize (inch)
2007 - 2009Midbass / Full-Range6.5
2007 - 2009Tweeter1

Center Dash Speaker

YearsTypeSize (inch)
2007 - 2009Full-Range3.5

Cargo Area Speaker

YearsTypeSize (inch)
2007 - 2009Midbass / Full-Range6.5

D-Pillar Speaker

YearsTypeSize (inch)
2007 - 2009Tweeter1

Mercedes-Benz R320 Speaker FAQ

Which speakers should I replace first in my Mercedes-Benz R320 for the biggest sound improvement?

Replace the front door 6.5 inch speakers first. These handle most of your music's midrange and bass content - around 80Hz to 4kHz typically. The R320's front doors are your primary listening position, so upgrading here gives immediate impact. Look for component speakers with separate tweeters since your R320 already has dedicated 1 inch tweeter locations. This lets you properly separate frequencies instead of cramming everything into coaxials. The rear doors can wait unless you frequently use those seats.

Can I install component speakers in all the 6.5 inch locations of my Mercedes-Benz R320?

Yes, but prioritize strategically. Your R320 has 6.5 inch locations in front doors, rear doors, and cargo area. Front doors benefit most from components since you have separate tweeter locations there. Rear doors might work better with quality coaxials - passengers don't need perfect imaging. The cargo area 6.5 inch spot seems designed for subwoofer duty given its location. Check if it's actually wired for full-range first. Sometimes manufacturers list capabilities that don't match actual wiring. Component systems typically need 50-75 watts RMS per channel to really shine.

What's the purpose of having three separate tweeter locations in the Mercedes-Benz R320?

Creates better sound staging across the cabin. Front door tweeters handle primary stereo imaging. The D-pillar tweeters extend high frequencies toward rear passengers - they're probably around 3kHz and up. Rear door tweeters complete the surround effect. This setup suggests Mercedes designed the R320 for true multi-zone audio rather than just front-focused sound. When upgrading, match impedance carefully - most factory tweeters run 4 ohms but some premium systems use 2 ohms. Wrong impedance can damage your amplifier or create weird frequency response.

Should I replace the center dash 3.5 inch speaker in my Mercedes-Benz R320?

Depends on your system configuration. That 3.5 inch center typically handles dialogue in surround setups or fills the stereo gap between front speakers. If your R320 has navigation or hands-free calling, it might be dedicated to voice prompts. Testing reveals its actual function - play familiar music and disconnect it temporarily. No major impact? It's probably auxiliary. Significant change in vocal clarity or center imaging? Then upgrading makes sense. Look for speakers rated around 20-40 watts RMS with good midrange response, roughly 200Hz to 5kHz.