Polk Audio SR Series SR6500, SR5250 Car Speakers

Polk Audio SR Series Ultra High-End Hybrid Component/Coaxial Car Speaker Systems

SR6500 &  SR5250 are the ultimate in performance and flexibility available from Polk Audio. These hybrid "Compaxial" systems feature a modular desing which allows you to use each speaker in a component or coaxial configuration.


In addition to their modular "compaxial" design; the SR6500 and SR5250 also feature a modular mounting plate system which allows for installation in factory locations that require a different speaker diameter.



  • SR5250 5-1/4": 6-1/2" (Slim Mount), 5" x 7", 6" x 8"  
  • SR6500: 6-1/2", 6-3/4", 6" x 9"


Premium Sound & Refined Details

The Signature Reference series is the best automotive speakers Polk has ever produced. Your vehicle and music deserve top-notch, audiophile sound! We spared no expense bringing you the finest design and materials to this ultra-premium line of autosound speakers and subwoofers. Every component in the system- from the cast aluminum crossover enclosure, to the tweeters and woofers were designed and constructed with meticulous attention to detail. SR Series compaxial systems and subwoofers offer the finest looks and sound for your high end autosound application!

Ring Radiator Tweeters

The same exotic, sweet, airy sounding Ring radiator tweeters from our LSi and RTS line is now available for your car. Included are straight and 15° angle flush mount. These tweeters extract every ounce of detail from your music to reveal all the nuances you might have never even known existed.

Advanced Drivers

Award-winning Polk Audio technology places the SR Signature Reference Series at the apex of high-performance car audio. The drivers use aerated polypropylene cones for maximum stiffness and minimum cone resonance, ensuring a tight, clean, articulate response. Nitrile butyl rubber surrounds, laser-optimized, vented 2-layer Kapton voice coils and formers, and case aluminum baskets with extra heat dissipating features, all contribute to the SR Series' professional sound quality and outstanding reliability.

The mid/bass driver cone is Aerated Polypropylene in which air is injected into Polypropylene to produce a honeycomb structure that serves to stiffen and damp the cone without adding mass. This is the same cone technology employed in Polk's critically acclaimed LSi Series audiophile-grade home speaker line.

1-1/2" Polyimide Voice Coil Former provide high thermal stability (rated to 220°C) high power handling, low mass and superior bass output.

Neodymium Magnet Structure

Finite Element Analysis (FEA) design makes the powerful neodymium magnet more linear for lower distortion and higher definition. Small Neo magnet makes the SR5250 easier to fit into more locations and vehicles.

Focal Car Audio Speakers and Subwoofers at OnlineCarstereo

Focal High Quality Car Audio Speakers and Woofers Now Arriving

Focal produces high quality car audio/stereo products that simply break the mold when it comes to high fidelity sound reproduction and imaging. Focal attributes it's success to it's keen focus on innovation; not only through research but also though direct control of all production phases.

We've recently added 2 of Focal's lines to our product catalog; the Access and Polyglass lines.

  • The Access line's standard speaker and subwoofer features include: aluminum inverted dome tweeters, Non-resonant, ABS/fiberglass baskets, Humidity-resistant, and woven glass-fiber woofers.
  • Polyglass line's standard speaker and subwoofer features include: Polyglass cones with butyl rubber surrounds, Zamak (zinc alloy) baskets, adjustable aluminum inverted dome tweeters, aluminum crossover shock protectors

  Swing by our Focal car audio store and check them out. 

JL Audio J2 Series Car Amplifiers

JL Audio's new J2 series car amplifiers have been specifically designed to be an affordable car audio system solution without compromising quality and performance. 


The Amplifiers that make up the J2 series are:

Mono Block



  • J2 360.2  360W RMS Class A/B 2-Channel
  • J2 360.4  320W RMS Class B 4-Channel



Standard features include:

  • An active crossover with fully variable 12dB/octave filter controls for fine tuning.
  • Pass-through pre-amp outputs for multi-amp interconnection.
  • Rugged MOSTFET switching power supplies
  • High-Mass extruded aluminum heat sinks