Rockford Fosgate R165-S 6.5" Component Speakers

The Rockford Fosgate Prime R165-S is a 6.5-inch, 2-way component speaker system made for replacing factory door speakers with separate woofers and tweeters. It is intended for vehicle owners who want clearer front-stage sound while retaining a practical, compact installation format. The set includes a pair of woofers, a pair of tweeters, grilles, and mounting hardware.

Its 40-watt RMS power rating suits many factory-radio upgrades while also leaving room for use with a modest aftermarket amplifier. The component layout places the tweeters separately from the woofers, allowing more flexible placement than a coaxial speaker. This can help direct higher frequencies toward the listening area when the vehicle has suitable tweeter locations.

The R165-S uses mica-injected polypropylene woofer cones and foam surrounds. These materials support a lightweight, rigid woofer design intended for midrange detail and everyday car-audio use. The specified frequency response is 60 Hz to 20 kHz, so a subwoofer can be added later for deeper low-frequency output.

Separate 1-inch Mylar balanced-dome tweeters handle the upper frequencies. Each tweeter includes an integrated 6 dB-per-octave high-pass crossover, eliminating the need to mount a separate crossover box. The tweeters support flush, surface, and angled surface mounting options for adaptable placement.

This system is a practical fit for factory replacement projects and entry-level component upgrades. Its 4-ohm nominal impedance and 89 dB sensitivity support compatibility with common car-audio speaker outputs. Confirm vehicle-specific cutout, depth, wiring, and mounting requirements before installation.

Key Features

• 6.5-Inch Component System: Separate woofers and tweeters support flexible front-stage placement.
• 40-Watt RMS Rating: Matches moderate factory or aftermarket amplifier power.
• Mica-Injected Polypropylene Cones: Provide a rigid, lightweight woofer diaphragm.
• Mylar Balanced-Dome Tweeters: Handle high frequencies with separate mounting options.
• Integrated High-Pass Crossover: Simplifies tweeter wiring without a separate crossover box.
• Factory-Replacement Dimensions: Compact 1.97-inch woofer mounting depth aids fitment.

Design & Installation

The R165-S combines mica-injected polypropylene woofer cones, foam surrounds, stamped-steel frames, and Mylar balanced-dome tweeters. Grilles or trim rings and mounting hardware are included. The woofers use standard spade terminals, while the tweeter crossover is integrated into the tweeter assembly.

Verify the 5.05-inch woofer mounting cutout and 1.97-inch mounting depth against the intended vehicle location before purchase. Connect the amplifier or radio output to the woofer's primary terminals, then connect the tweeter to the woofer's secondary terminals while maintaining polarity. Run wiring before mounting, check clearance for windows and other moving door hardware, and use vehicle-specific adapters or harnesses when required.