Mercedes-Benz 450SLC Speaker Size
Speaker size, type, and location chart for Mercedes-Benz 450SLC models from 1973 to 1980 production years.
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Dashboard Speaker
| Years | Type | Size (inch) |
|---|---|---|
| 1973 - 1980 | Midrange | 4 |
Rear Deck Lid Speaker
| Years | Type | Size (inch) |
|---|---|---|
| 1973 - 1980 | Full-Range | 4x6 |
Mercedes-Benz 450SLC Speaker FAQ
What speakers should I replace first in my Mercedes-Benz 450SLC?
Replace the rear deck lid speakers first. The 4x6 coaxials handle most of your music's frequency range and typically show wear faster than dash units. Dashboard speakers in the 450SLC often serve more as fill speakers anyway. Start with quality 4x6 coaxials rated around 50-75 watts RMS, 4-ohm impedance. The rear deck position gives you better bass response than the dash location could ever provide.
Can I upgrade to component speakers in my Mercedes-Benz 450SLC?
The factory locations don't really support component systems well. You've got 4-inch dash spots and 4x6 rear deck - neither ideal for separating tweeters and woofers. Stick with high-quality coaxials instead. Look for speakers with silk dome tweeters, frequency response around 45Hz-20kHz. The Mercedes-Benz 450SLC's interior acoustics work better with the integrated design of coaxials anyway.
What power handling should I look for in 450SLC replacement speakers?
Target 40-60 watts RMS for the 4x6 rear speakers, maybe 25-35 watts for the 4-inch dash units. Peak power ratings don't matter much - focus on RMS. Most aftermarket head units put out 15-25 watts per channel, so you don't need crazy power handling. The Mercedes-Benz 450SLC's cabin isn't huge anyway. Higher sensitivity ratings (90dB+) matter more than raw power handling in this application.
Why do my Mercedes-Benz 450SLC speakers sound muffled?
Probably the foam surrounds on those old coaxials. Original speakers from the 70s often develop surround rot - the foam deteriorates and kills frequency response. Also check if someone stuffed too much dampening material around the rear deck speakers. The 450SLC's rear deck design needs some air movement. Sometimes the dash speakers just need cleaning - dust accumulates on the grilles over decades.
What impedance speakers work with the Mercedes-Benz 450SLC factory wiring?
Standard 4-ohm speakers should work fine with the original wiring harness. The factory system was designed around 4-ohm loads. Some people try 8-ohm speakers thinking they're "better" but you'll lose volume. Your head unit expects to see 4-ohm impedance for optimal power transfer. The Mercedes-Benz 450SLC's electrical system can handle modern speaker loads without issues.