Alpine S2-S65C Speakers 6.5 Inch 16.5cm S2 Series 2 Way Component 80w RMS Pair

The Alpine S2-S65C is a Hi-Res Audio certified 16.5cm (6.5 inch) 2-way component speaker set from the Alpine S2 Series, rated at 80 W RMS and 240 W peak, with 2.5cm (1 inch) swivel dome tweeters and in-line crossovers, sold as a pair.

This listing is the S2-S65C component set. The Alpine S2 Series 6.5 inch speakers are also available as a coaxial pair: Alpine S2-S65 2-Way Coaxial 80w RMS Pair.

Key specifications

• Woofer size: 16.5cm (6-1/2")
• Tweeter: 2.5cm (1") dome with swivel housing
• Power handling: 80 W RMS, 240 W peak
• Frequency range: 55 Hz to 40 kHz (Hi-Res Audio certified)
• Impedance: 4 ohms
• Sensitivity: 88 dB/W
• Woofer mounting depth: 57.7mm; cutout diameter 128mm
• Tweeter cutout diameter (flush mount): 51mm
• Cone: polypropylene, glass fibre and mica, with HAMR surround

Alpine S-Series: the music lover's starter pack

The S2-S65C is a redesigned entry-level component set built to Hi-Res Audio standards. Alpine used high-performance materials and proprietary design elements to deliver high output and low distortion at an accessible price. The woofer cone combines polypropylene, glass fibre and mica for lightweight, accurate reproduction. Increased magnet sizes improve power handling and mid-bass performance.

The woofer's High Amplitude Multi-Roll (HAMR) surround allows maximum cone movement for stronger bass. The 2.5cm (1") dome tweeter recovers the high-frequency detail typically lost with factory speakers. In-line crossovers make installation straightforward, including home fitting. The speakers include several adapters and spacers to cover a wide range of vehicle fitments.

Hi-Res Audio certified

Drawing on technology from Alpine's flagship F#1 Status system, the S2-S65C is Hi-Res Audio certified with a frequency response reaching 40 kHz. This delivers a more accurate and natural sound at an entry-level price point.

Clean, accurate audio

The polypropylene, glass fibre and mica cone combination keeps weight low while maximising output and minimising distortion, producing clean and accurate audio across the frequency range.

HAMR surround

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

Simplified installation

The S2-S65C is designed for straightforward OEM replacement. In-line crossovers handle sound separation without additional hardware. The swivel tweeter housing supports flush mounting and is removable, allowing fitment into small OEM tweeter locations or custom installations where space is limited.

Made for S-Series amps and subs

The S2-S65C is designed to pair with Alpine's S-Series amplifier and subwoofer range, making it easy to build a complete, well-matched system with Hi-Res Audio capability. If you need a smaller option, the Alpine S2-S40 4 inch coaxial pair is also available in the S2 Series.

Compatible with KTE-S65G speaker grilles (sold separately).