Alpine S2-S40 Speakers 4 Inch 10cm S2 Series Car 2 Way Coaxial 45w RMS Pair

The Alpine S2-S40 is a pair of 4-inch (10cm) 2-way coaxial car speakers from the Alpine S2 Series, rated at 45W RMS and 140W peak, with Hi-Res Audio certification and an integrated 2cm dome tweeter.

This listing is the 4-inch S2-S40. The Alpine S2 Series is also available in 6.5-inch (S2-S65, 80W RMS).

Key specifications

• Size: 10cm (4") 2-way coaxial (pair)
• Power handling: 45W RMS / 140W peak
• Tweeter: integrated 2cm (3/4") dome
• Frequency range: 100Hz – 40kHz (Hi-Res Audio certified)
• Sensitivity: 86dB/W
• Impedance: 4 ohms
• Cutout diameter: 93.6mm
• Mounting depth: 43.0mm

Alpine S-Series: Entry-Level Speaker Upgrade

The S2-S40 is a redesigned, Hi-Res Audio certified 10cm (4") coaxial speaker. Alpine has used a lightweight woofer cone made from a combination of polypropylene, glass fibre and mica — chosen for high output and low distortion. An enlarged magnet delivers stronger power handling and mid-bass performance. In-line crossovers are included, making fitting straightforward, even at home. Multiple adapters and spacers are supplied for a wide vehicle fitment range.

Hi-Res Audio Certified

Drawing on technology from Alpine's F#1Status system, the S2-S40 is Hi-Res Audio certified and capable of reproducing frequencies up to 40kHz. This delivers a more accurate and natural sound at an entry-level price point.

Clean, Accurate Audio

The polypropylene, glass fibre and mica cone keeps weight low while maintaining high output and low distortion for a clean, accurate listening experience.

HAMR Surround

Alpine's High Amplitude Multi-Roll (HAMR) surround allows maximum cone movement, producing powerful and accurate bass reproduction.

Extensive Mounting Options

The S2-S40 is compatible with most 10cm installation locations across a wide range of vehicles. The steel basket features multiple screw brackets to suit different mounting applications.

Made for S-Series Amps & Subs

The S2-S40 is designed to pair with Alpine's S-Series amplifiers and subwoofers for straightforward system building. The S-Series range is aimed at those who want strong, Hi-Res Audio capable sound without a high outlay.