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Alpine R2-S65C

$350.00

Next-Generation R-Series 6-1/2″ 2-way component speaker system

Your entry to high-res audio. Alpine’s R2-S65C 6-1/2″ component speaker system delivers exceptional audio performance for enthusiasts interested in high-resolution audio playback. Using technology developed for their flagship F#1 Status Series, these Next-Generation R-Series speakers reproduce music with remarkable detail and authenticity while maintaining Alpine’s signature “loud and fun” sound character. Featured in “Best component car speakers for 2025,” this premium system combines 6-1/2″ glass-fiber woofers with 1″ magnesium dome tweeters and sophisticated crossover networks. The result is a component system that excels at reproducing the full range of musical details with minimal distortion, even at high volume levels.

Product Highlights

  • Type: 6-1/2″ 2-way component speaker system
  • Power Handling: 100 watts RMS (300 watts peak)
  • Frequency Response: 65-40,000 Hz (high-resolution audio capable)
  • Sensitivity: 88 dB at 1 watt/1 meter
  • Impedance: 4 ohms

Key Features

  • Premium Woofer Construction:
    • Glass-fiber reinforced cone for lightweight rigidity
    • High-Amplitude Multi-Roll (HAMR) rubber surround
    • Rigid aluminum frame for minimal distortion
    • Ferrite magnet with large motor structure for enhanced mid-bass
  • High-Performance Tweeter:
    • 1″ magnesium hard dome design
    • Swivel-mount capability for optimized imaging
    • Multiple mounting options
  • Sophisticated Crossover System:
    • In-line crossover design
    • Adjustable tweeter output levels
    • Bi-amp capability
  • Flexible Installation:
    • Multiple tweeter mounting options
    • Includes adapter rings for various applications

Package Contents

  • Two 6-1/2″ woofers with grilles
  • Two 1″ tweeters with grilles (pre-installed)
  • Two in-line tweeter crossovers
  • Multiple tweeter mounting housings and adapters
  • Various mounting hardware and adapter rings
  • Installation documentation

Performance & Power

  • Power Handling: 100 watts RMS (300 watts peak)
  • Frequency Response: 65-40,000 Hz
  • Sensitivity: 88 dB (1W at 1 meter)
  • Impedance: 4 ohms

Physical Dimensions

  • Woofer Dimensions:
    • Frame Diameter: 6.495 inches
    • Cutout Diameter: 5-3/8 inches
    • Mounting Depth: 2-1/2 inches
    • Mounting Height: 0.48 inches
  • Tweeter Dimensions (varies by mounting option):
    • Flush Mount (swivel):
      • Frame Diameter: 2.285 inches
      • Cutout Diameter: 2.0 inches
      • Mounting Depth: 0.65 inches
      • Mounting Height: 0.378 inches
    • Angled Surface Mount:
      • Frame Dimensions: 1.82″ x 1.71″
      • Mounting Height: 1.325 inches
    • Factory Location Mount:
      • Multiple configurations available for OEM integration

Materials & Construction

  • Woofer:
    • Cone Material: Glass-fiber reinforced composite
    • Surround: HAMR (High-Amplitude Multi-Roll) rubber
    • Frame: Rigid aluminum
    • Magnet: Ferrite with large motor structure
    • Features: Optimized for minimal distortion and enhanced mid-bass response
  • Tweeter:
    • Design: 1″ hard dome
    • Material: Magnesium
    • Features: Adjustable aim (15° pivot in flush mount)
    • Wire: 30″ length attached with quick slides
  • Crossover Network:
    • Woofer: Low-pass filter with 6 dB/octave slope (attached to woofer)
    • Tweeter: In-line high-pass filter with 12 dB/octave slope
    • Tweeter Level Adjustment: -3 dB, 0 dB (flat), or +3 dB via jumper
    • Dimensions: 1.5″ W x 1.25″ H x 2.875″ L (plus wire)
    • Wiring: 31″ input wire, 12″ output wire to tweeter
    • Mounting: Two-sided tape included

Installation Options

  • Woofer Mounting Options:
    • Standard Installation: Fits many 6-3/4″ applications without adapters
    • With Included Adapters:
      • 6-1/2″ applications
      • 6-3/4″ applications
      • 5″x7″ applications
      • 6″x8″ applications
  • Tweeter Mounting Options:
    • Flush Mount: Pivoting design for sound aiming
    • Angled Surface Mount: For dash or pillar installation
    • Stealth Mount: For factory location installation
    • Top or bottom mounting configurations
    • Removable tabs for custom fitting
  • Wiring Configuration:
    • Standard: Single amplifier connection
    • Bi-Amp Capable: Separate woofer and tweeter amplification possible
    • Connection Type: Quick slides for easy installation

Size Note

  • Alpine markets these as 6-1/2″ woofers, though their larger-than-standard cutout requirement (5-3/8″) means they may be classified as 6-3/4″ in some contexts
  • Vehicle compatibility should be confirmed before purchase
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