Memphis PRX4 4" 2-Way Coaxial Car Speakers

The Memphis PRX4 is a pair of 4-inch 2-way coaxial car speakers designed to replace small factory speakers with a more capable full-range solution. It combines a woofer and tweeter in each speaker, helping simplify an upgrade where space is limited. The PRX4 is intended for vehicles that use 4-inch round speaker locations.

With 20 watts RMS and 40 watts peak power handling per speaker, the PRX4 is suited to factory-radio upgrades and modest amplified systems. Its 4-ohm impedance supports common aftermarket and factory-style speaker wiring applications. An 86 dB sensitivity rating and a stated 187 Hz to 20 kHz frequency response define its operating range.

A graphite-reinforced polypropylene cone handles the midrange and upper-bass duties, while the PEI dome tweeter handles high frequencies. The result is a compact coaxial speaker format that covers the main frequency range without requiring separate component tweeters. A butyl rubber surround supports cone movement and durability.

The PRX4 uses Memphis Audio's multi-direction pivot tweeter system, allowing the tweeter angle to be adjusted toward the listening area when installation space permits. This can help tailor high-frequency direction in door, dash, or rear-deck locations. An integrated 6 dB crossover is included for the tweeter.

These speakers work well as a direct replacement starting point in a broader audio upgrade. They can be paired with a compatible low-power four-channel amplifier or used with an appropriately rated head unit. Confirm the vehicle's speaker opening, mounting depth, and connector requirements before installation.

Key Features

• 4-Inch Coaxial Design: Combines woofer and tweeter in each compact speaker.
• 20W RMS Handling: Matches modest factory-radio and amplifier power levels.
• PEI Dome Tweeter: Reproduces high frequencies through an integrated tweeter.
• Pivot Tweeter System: Allows high-frequency direction to be adjusted after mounting.
• Graphite-Reinforced Cone: Provides a rigid polypropylene woofer diaphragm.
• Integrated 6 dB Crossover: Directs appropriate frequencies to the tweeter.

Design & Installation

The PRX4 uses a graphite-reinforced polypropylene woofer cone, butyl rubber surround, PEI dome tweeter, and an 8-ounce magnet structure. Its coaxial layout places the tweeter over the woofer to keep the package compact. Speaker grilles are included for installations where the vehicle does not provide factory protection.

Check available clearance against the listed 1.75-inch mounting depth and verify the approximately 3.69-inch cutout requirement before ordering. Vehicle-specific mounting brackets, wiring adapters, or hardware may be needed depending on the factory location. Match each speaker to an amplifier or radio channel appropriate for a 4-ohm speaker with 20 watts RMS handling.