Rockford Fosgate R152-S Prime 5.25" 2-Way Component System

5.25" 2-Way Component System Mica-Injected Cone, Mylar Dome Tweeter, In-Line Crossover, and Three Tweeter Mounting Options. 40W RMS.

Product Overview

The Rockford Fosgate Prime R152-S is a 5.25" 2-way component speaker system rated at 40W RMS a complete kit including two woofers with grilles, two Mylar® dome tweeters with in-line crossovers, and all mounting hardware. Component speaker systems separate the woofer and tweeter into independent drivers, allowing each to be positioned and angled optimally the woofer in the factory door location and the tweeter at dash, A-pillar, or door mirror triangle positions for improved soundstage and imaging over a coaxial (all-in-one) design.

The woofer uses a Mica-injected polypropylene cone a step up from the standard polypropylene used in the full-range coaxial Prime speakers. Mica injection adds stiffness to the polypropylene matrix, improving cone rigidity and reducing flex under load for more accurate bass and midrange reproduction without the added weight of traditional cone materials. The foam surround accommodates OEM installation geometries. The Mylar® dome tweeter matches the R1T-S dedicated tweeter in construction, adding a bright, extended high-frequency character.

Key Specifications

• Woofer size: 5.25 inch
• Configuration: 2-way component (separate woofer + tweeter)
• Power handling (RMS): 40W per woofer (confirmed)
• Peak power: Not specified — confirm with Rockford Fosgate
• Impedance: Not specified — confirm with Rockford Fosgate
• Sensitivity: Not specified — confirm with Rockford Fosgate
• Frequency response: Not specified — confirm with Rockford Fosgate
• Woofer cone: Mica-injected polypropylene
• Woofer surround: Foam
• Basket: Stamped steel
• Tweeter: 1/2" (13mm) Mylar® balanced dome
• Crossover: In-line (integrated, per tweeter)
• Tweeter mounting: Flush, surface, and angle options
• Grilles: Included (with woofers)
• Mounting hardware: Included
• Kit contents: 2 woofers + 2 tweeters + 2 crossovers + grilles + hardware
• Mounting depth: Not specified — confirm with Rockford Fosgate
• Cutout diameter: Not specified — confirm with Rockford Fosgate
• Weight: Not specified — confirm with Rockford Fosgate
• Warranty: Not specified — confirm with Rockford Fosgate

Features & Benefits

• Complete 2-Way Component System Kit — Two woofers, two tweeters, two in-line crossovers, woofer grilles, and all mounting hardware in a single purchase — everything required for a full left/right component speaker installation in the two front door positions.
• Mica-Injected Polypropylene Cone — Adding Mica particles to the polypropylene cone compound increases the cone's structural stiffness without adding significant weight. A stiffer cone resists flex and distortion under dynamic load — producing more accurate midrange and bass reproduction compared to standard polypropylene. This is a meaningful material upgrade over the full-range coaxial Prime speakers in this catalogue.
• 1/2" (13mm) Mylar® Dome Tweeter — The same Mylar balanced dome construction as the R1T-S dedicated tweeter — lightweight, high-sensitivity diaphragm producing detailed, extended high-frequency reproduction with a bright, forward character.
• In-Line Crossover — The crossover is integrated directly into the tweeter cable rather than requiring a separate crossover box to be mounted in the door or cabin. This simplifies installation considerably — particularly in OEM replacement contexts where mounting a crossover box may not be practical.
• Three Tweeter Mounting Configurations — Flush, surface, and angle mount hardware is included for each tweeter — identical to the R1T-S kit — allowing the tweeter to be positioned for optimal directional performance regardless of the vehicle's available mounting surfaces.
• Direct OEM Installation — The R152-S is designed for compatibility with factory speaker positions, minimising the modification required for installation in standard door locations.
• Foam Surround — Note: the R152-S uses a foam surround rather than the rubber surround found on the coaxial Prime speakers in this catalogue. Foam surrounds can be more susceptible to degradation in extreme heat over many years than rubber surrounds. This does not affect short to medium-term performance but is worth noting for buyers in consistently hot Australian climates planning a very long-term installation.

Technical Specs

Compatible With / Goes Well With

Suitable installation:

• 5.25" front door speaker positions requiring a component system upgrade
• OEM installation in factory 5.25" speaker locations
• Custom component builds in vehicles with 5.25" door speaker positions

Component vs coaxial — when to choose:

• Coaxial (R1525X2): Woofer and tweeter in a single unit — simpler installation, no tweeter positioning required, good for OEM direct replacement
• Component (R152-S): Separate woofer and tweeter — more complex installation, but allows independent tweeter positioning for improved soundstage and imaging

Pairs well with:

• Rockford Fosgate T400-4, T600-4, or T1000-4AD 4-channel amplifiers
• Additional amplified subwoofer for low-frequency extension below the 5.25" woofer's range

Frequently Asked Questions

What is the difference between a component system and a coaxial speaker?

A coaxial speaker has the woofer and tweeter combined into a single unit that mounts in one location. A component system separates the woofer and tweeter — the woofer mounts in the standard door position while the tweeter is placed independently (typically at ear level on the A-pillar, dash, or door mirror triangle). Independent tweeter placement produces a more realistic soundstage and better stereo imaging than a coaxial design.

What is Mica-injected polypropylene and why is it used?

Mica particles are added to the polypropylene cone compound, increasing the cone's rigidity without significant weight increase. A stiffer cone resists flex and distortion under dynamic load — improving midrange accuracy and bass reproduction compared to standard polypropylene. It is a meaningful material upgrade over the coaxial Prime speakers which use standard polypropylene cones.

The coaxial Prime speakers use rubber surrounds — why does the R152-S use foam?

The foam surround on the R152-S woofer accommodates the geometrical requirements of OEM speaker positions and provides specific compliance characteristics suited to the 5.25" driver design. Foam surrounds can be more susceptible to heat-related degradation over many years than rubber. For the majority of Australian installations this is not a practical concern over a standard ownership period. If very long-term durability is a priority, confirm surround material longevity expectations with Rockford Fosgate.

What crossover is included and where does it mount?

An in-line crossover is integrated into each tweeter's cable — it mounts in-line in the wiring run rather than requiring a separate crossover box to be secured inside the door or cabin. Crossover point and slope are not confirmed in the supplier data — pull the official Rockford Fosgate R152-S datasheet for these specifications.

Does the R152-S come with grilles for the woofers?

Yes — grilles are included with the woofers as part of the kit, along with mounting hardware for all components.