Alpine R2-S65C

$350.00

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

About the Alpine R2-S65C

Your entry to high-res audio

Enjoy all the details in your favorite high-resolution audio files with this set of Next-Generation R-Series component woofers, tweeters, and convenient in-line crossover systems. Using technology developed for their flagship F#1 Status Series, Alpine built these speakers to be fun for enthusiasts interested in high-resolution audio playback. Their ultra-wide frequency response ensures a detailed, authentic sound, and thanks to power-handling up to 100 watts RMS, you can play ’em loud!

Minimal distortion

Alpine optimizes their R2-S65C 6-1/2″ 2-way component speaker system for near-perfect sound from premium sources. The woofer’s combination of a highly rigid aluminum frame and a lightweight glass-fiber reinforced woofer cone helps minimize distortion. The high-amplitude multi-roll surround maximizes impact while maintaining linearity, so you’ll get punch with minimal distortion. And speaking of a little more punch, the woofer’s ferrite magnet and large motor structure will pump up the mid-bass in your music.

Loud and fun

All the exquisite detail you need is handled by the 1″ magnesium hard dome tweeters, which contribute to the “loud and fun” sound associated with Alpine’s R-Series. Because tweeters can be challenging to install, Alpine provides in-line crossover systems, a threaded removable housing, and a swivel-mount design to make sure you have what you need to make them sound their best.

Product highlights:

Featured in our article: Best component car speakers for 2025
2-way component speaker system
6-1/2″ glass-fiber woofer cone with High-Amplitude Multi-Roll surround
1″ magnesium hard dome tweeter
handles up to 100 watts RMS (300 watts peak power)
frequency range: 65-40,000 Hz
warranty: 1 year

What’s in the box:

Alpine R2-S65C owner’s manual
2 Woofers
Two multi-purpose adapter rings (includes GM/Chrysler)
Two 6×8 Adapter rings
2 Woofer grilles
2 Tweeters (each has an attached 30″ length of wire terminated with quick slides)
2 Tweeter crossovers (each has attached input and output wires)
2 Tweeter grilles (installed)
2 Flush mount housings (with tweeters installed)
2 Flush mount retention rings
2 Angled surface mount housings
2 Stealth (factory location) brackets
2 Round self-adhesive pads
2 Rectangular self-adhesive pads
Eight 1-1/8″ Screws
Four 5/8″ Screws
Eight 1/2″ Screws
8 Large speed-clips
4 Small speed-clips
Eight M4x12mm Machine screws
Four 5″ Zip ties
Warranty information
On-line product registration information
Important Notice
Template and specs on box

More details on the Alpine R2-S65C

Features & specs

General
Speaker Size	6 1/2
Driver Design	2-way
Woofer Design	Cone
Woofer Material	Glass-Fiber
Woofer Surround	Rubber
Midrange Design	—
Midrange Material	—
Tweeter Design	Dome
Tweeter Material	Magnesium
Super Tweeter Design	—
Super Tweeter Material	—
Impedance (Ohms)	4
Weather-resistant	No
Grilles Included	Black, Steel mesh, Plastic frame
Parts Warranty	1 Year
Specifications
Sensitivity (1W at 1 meter)	88
Sensitivity at 2.83 volts	N/A
Frequency Response	65 – 40k Hz
Maximum RMS Wattage	100
Peak Power Handling (Watts)	300
Top-mount Depth (Inches)	2 1/2
Bottom-mount Depth (Inches)	N/A
Cutout Diameter or Length (inches)	5 3/8
Mounting Height (Inches)	0.48
Frame Width	6.495
Frame Length	6.495

The Alpine R2-S65C replaces these items:

Alpine R-S65C.2

Product Research

Features

Size Note: Alpine describes this woofer size as 6½, but because it requires a larger cutout than a standard 6½, Crutchfield has traditionally referred to this size as 6¾. Without adapter brackets the speakers fit many standard 6¾ applications. Using the included adapter brackets they can also be mounted in a variety of 6½, 6¾, 5×7, and 6×8 applications. Please enter your vehicle information to confirm fit.

HAMR Surround: The R-Series speakers incorporate Alpine’s patented High-Amplitude Multi-Roll (HAMR) surround, a technology developed for Alpine subwoofers that maintains control and stability at higher volume levels. HAMR surrounds combine increased cone area and long linear cone excursion for deep, powerful bass response.

Tweeter Mounting Options: The tweeters come installed in a flush-mount housing. Once mounted, the tweeters pivot approximately 15° in any direction, to improve the stereo image. Angled surface-mount housings are also included, or you can install the tweeters behind factory grilles using the included stealth mount brackets. The stealth mount brackets can be top or bottom mounted; they have multiple tabs that can be removed when not needed. The installed tweeter dimensions are:

	Flush Mount (swivel)	Angled Surface Mount	Factory Location (bottom mount)	Factory Location (top mount)
Mounting Depth	0.65″	N/A	0.653″	0.6″
Mounting Height	0.378″	1.325″	0″	0.075″
Cutout Diameter	2.0″	N/A	N/A	N/A
Frame Diameter	2.285″	1.82″ x 1.71″	1.726″	1.726″

Crossovers: A low-pass crossover with a 6 dB/octave slope is attached to each woofer’s input terminal. The included 12 dB/octave in-line high-pass crossovers are wired between the woofers and tweeters. Each woofer has two positive and two negative terminals, one for input from the amplifier, and one for output to the tweeter (via the in-line high-pass crossover). The 12″ output wires attached to the crossovers are terminated with quick slides that connect to the terminals on the 30″ wires attached to the tweeters. The quick slides on the attached 31″ input wires connect to the extra terminals on the woofers. Because the crossovers are separate, the system can be bi-amped. Two-sided tape is included to mount the high-pass crossovers; their dimensions are:

Width: 1½”
Height: 1¼”
Length: 2⅞” (3″ including wire)

Tweeter Output Level: Each crossover has three tweeter output level options, allowing you to precisely tune the high frequencies to the car interior and tweeter placement. Using the supplied jumpers select -3 dB, 0 dB (flat), or +3 dB.