Mercedes-Benz 450SL Speaker Size
Speaker size, type, and location chart for Mercedes-Benz 450SL 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 450SL Speaker FAQ
What speakers should I replace first in my Mercedes-Benz 450SL?
Replace the 4-inch dashboard speakers first. They handle most of your vocals and midrange frequencies - around 200Hz to 4kHz typically. The rear deck 4x6 speakers can wait since they're mainly for fill and low-end support. Dashboard placement gives you better stereo imaging anyway. You'll notice clearer dialogue and instrument separation immediately with new dash speakers.
Can I upgrade to component speakers in my Mercedes-Benz 450SL dashboard?
Probably not without major modifications. The 4-inch dashboard location seems designed for full-range coaxial speakers. Component systems need separate tweeter mounting, and your dash might not have provisions for that. Stick with high-quality 4-inch coaxials - something like 50-60 watts RMS handling should work well. The space constraints in classic Mercedes dashboards usually make coaxials the practical choice.
Why does my Mercedes-Benz 450SL have different speaker sizes front and rear?
The 4-inch dash speakers focus on midrange and vocal clarity, while the 4x6 rear deck speakers provide more surface area for bass response. It's actually smart engineering - the rectangular 4x6 format gives you better low-frequency output from the rear position. Though with only about 24 square inches of cone area total, don't expect deep bass below 80Hz or so.
What impedance should I use for Mercedes-Benz 450SL speaker replacements?
Go with 4-ohm speakers if your head unit can handle it, otherwise stick to 8-ohm. Most aftermarket units prefer 4-ohm loads for better power transfer. The original system was probably 8-ohm though. Check your amplifier specs first - you don't want to overload anything. Some vintage Mercedes audio systems can be... particular about impedance matching.
Will larger speakers fit in my Mercedes-Benz 450SL rear deck?
The 4x6 rear deck opening might accommodate 5x7 speakers with minor modifications. Measure carefully though - classic Mercedes had pretty tight tolerances. You'd gain some bass extension, maybe down to 60-70Hz instead of 80Hz. But consider if the extra work is worth it. Sometimes the original 4x6 size was chosen for acoustic reasons specific to that cabin space.