C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Subs and amp W203

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Old Jun 17, 2025 | 06:06 AM
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Subs and amp W203

How do you install subs and amp to a W203 07 C280? What’s the easiest way? I have the Harman Kardon stock amp and sub.
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Old Jun 17, 2025 | 10:32 AM
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2005 C230 Sport Sedan-6 Speed Manual
This thread shows how another forum member and I installed subs in our cars.

My car didn't have the Harman Kardon system. I needed to retrofit the amp, wiring and the speakers. I initially used Harman Kardon speaker components I salvaged from another car but later replaced the HK speakers with some inexpensive speakers from Parts Express.

You don't specify whether you plan to use the HK amplifier. The HK amp uses a fiber optic system, and I don't have experience working with that. I recommend that you search on the term "fiber optic" to see whether another forum member provided any guidance.

Good luck with your project.
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