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Product Info
The Alpine S2-Series 4 Inch 2-Way Component Speaker 45W RMS S2-S40C is a Hi-Res Audio certified component speaker set engineered for compact dash and door installations. The glass fibre composite woofer cone pairs with Alpine's patented High-Amplitude Multi-Roll (HAMR) surround to deliver controlled cone excursion and punchy bass, while a 1-inch soft dome tweeter extends smooth high-frequency detail up to 40kHz across a 120Hz to 40kHz frequency range.
Rated at 45W RMS and 140W peak power with a 4 ohm impedance, the S2-S40C suits a wide range of factory and aftermarket head units and amplifiers. The separate tweeter allows custom placement for optimised sound staging, and the compact 4 inch woofer fits easily into tight dashboards and door panels across a wide range of vehicles.
Features
- High-amplitude multi-roll (H.A.M.R.) surround
- Hi-Res Audio certified
- Glass fibre composite woofer cone
- Versatile tweeter installation
- Large magnet structure
- 45W RMS / 140W peak power output
- Frequency response of 120 Hz–40kHz
- Smooth and detailed high-frequency extension
- Compact 4-inch design ideal for smaller spaces
- Rigid composite construction for durability
Tech Spec
| Woofer | 4″ (100mm) Component Speaker |
|---|---|
| Woofer Magnet Material | Strontium Ferrite |
| Tweeter | 0.8″ Extended-Range Soft Dome |
| Tweeter Magnet Material | Ferrite |
| Crossover Network (Woofer) | Copper Air-Coiled Wound Inductor |
| Crossover Network (Tweeter) | High Quality Audio Grade Poly-Capacitor |
| Woofer Mounting Diameter | 93.6mm |
| Woofer Mounting Depth | 43mm |
| Tweeter Mounting Diameter | 51mm |
| Tweeter Mounting Depth | 17.6mm |
| Peak Power | 140 Watts |
| RMS Power | 45 Watts |
| Frequency Range | 120 Hz – 40 kHz |
| Impedance | 4 Ohms |
| Sensitivity | 85 dB |