【RC 100 | Easily Step Up Your OEM Sound with a 4-Inch Coaxial Speaker】

If you feel that the sound from your factory speakers is a little underwhelming, that vocals sound muffled, or that you want to enjoy music more closely, RC 100 is worth considering.

RC 100 is a coaxial speaker that combines a 4-inch woofer and a 19mm silk dome tweeter. Since it brings the mid-bass/lower range and the high range together in a single unit, it’s easy to fit even in limited space—and it’s well suited for cases where you want to change the impression of the sound by replacing the OEM speakers.

Another key point is that the silk dome tweeter makes it easier to add high-frequency information naturally. It’s the kind of speaker you should try first if you want to hear a bit more definition in vocals and instruments, or if you’d like to enjoy the music you always listen to with a slightly different impression.

That said, because 4-inch speakers are compact, the final result can vary depending on your vehicle’s mounting conditions and installation method. The mounting depth is 50mm, and the impedance is 3Ω. So when considering replacing your factory speakers, it’s important to check the available space on your vehicle and how it will pair with your audio system.

If I were choosing, I wouldn’t decide based on the speaker’s standalone specs alone. I’d listen to how you use your car and what your current sound concerns are, and then consider everything—including the installation method. Even with the same speaker, the overall impression can change depending on the mounting base and fixation method, interference with nearby components, and audio adjustments after the swap.

Let’s think it through together with a realistic setup while confirming whether RC 100 fits your car and how it might change compared to your OEM speakers.

Main Specifications

【Basic Information】
Product name: RC 100
Type: Coaxial speaker

【Speaker Configuration】
Speaker size: 4 inches
Tweeter: 19mm silk dome tweeter

【Output / Electrical Specifications】
Power rating: 2×95／65W
Impedance: 3Ω

【Installation】
Mounting depth: 50mm