This product is a vintage Polk model and is not available for sale, but it may still be available in some stores as a closeout or used product. The following text is taken from the original sales brochure for this product and does not reflect current availability. If you happen to have any question or concerns about this product, or any other Polk Audio product, feel free to contact our Customer Service Department at 1-800-377-7655 Monday - Friday, 9am - 5:30pm EST


5.25 inch, 2-way component system

Available Finishes:

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More Control, More Power,
More Everything

The dX3055 component system gives you the installation flexibility of the 5.25" dX5510 driver combined with the small but powerful 1" dX3000 tweeter. And if you're a control freak, you'll be happy to know that the dX Crossover in this system gives you the kind of audio flexibility that suits your taste as well.

The dX3055 features:

  • Blue tri-laminate silk composite dome tweeters for more accurate response, superior detail and high power handling: "Bright Without Bite."
  • Dynamic Balance mineral-filled polymer cone driver for clear, well-defined midrange and great bass, too.
  • Pivoting tweeter, which allows you to aim the tweeter in the direction that yields the best high frequency response and soundstaging.
  • Neodymium (NdFeb) magnets offer powerful magnetic energy from small magnets. You get great sound and a speaker so small that it is easy to fit and mount in a wide variety of locations.
  • Three-position tweeter level switch for precise high frequency optimization for your car.
  • Adjustable crossover point and slope provide 12 different combinations of settings, allowing you to precisely tailor the system sound to suit your car's acoustics and your ears.
  • Coated baskets and gold plated terminals resist rust and corrosion for years of reliable performance.
  • Polk's Dynamic Balance® technology for superior response with all kinds of music.
  • High-tech Elastomer rubberized-plastic surrounds for reliable durability and better tuning.
  • Aramid fiber spiders—the same material used in bulletproof vests—for linear response and wider dynamic range.
  • Extra long, precision wrapped, vented voice coils for superior cooling, longer linear throw, and high power-handling.

Flush and surface mount tweeter mounting cups are supplied.

If you're serious about your car stereo -- don't bother with cheap-o speakers. Go for the gusto of the dX Series Component Loudspeakers. They give you the ultimate in performance, flexibility, and control. They contain some amazing technology -- the kind that makes them tough enough to take the heat, and powerful and efficient enough to inspire many a road trip.

Crossover to real control with the dX System Crossover. Because what good is your dream system if you can't make it sound the way it does in your dreams? The dX Series Component Crossovers give you a tuning flexibility that you won't find in any similar system. Choose from among 12 different combinations of tweeter level, tweeter phasing, crossover frequency and slope. Fiddle with it till it suits your taste, or that of the judges in your next competition!

dX Component Systems are an engineering marvel of control & performance.

Driver Complement

Diameter1" (2.54cm) 
TypeTri-laminate silk composite dome 
Mid / Woofer
Diameter5 1/4" (13.34cm) 
TypePolymer composite cone speaker 


Total Frequency Response60Hz-20khz 
Nominal Impedance4 ohms
Efficiency89 dB
Power Handling
Continuous35 watts
Peak100 watts
Switch Position ALPF 3.8kHz 2nd order Butterworth, HPF 3.8kHz 2nd order 
Switch Position BLPF 3.8kHz first order Butterworth, HPF 3.8kHz 2nd order 
Recommended Amplifier Power5 - 100 watts per channel


Height1" (2.54cm) 
Length4 3/8" (11.11cm) 
Width3 3/8" (8.57cm) 
Tweeter Cut-Out Diameter2 1/8" (5.40cm) 
Height13/16" (2.06cm) 
Diameter6 1/4" (15.88cm) 
Driver Mounting Depth
Top Mount with Grille2 7/16" (6.19cm) 
Top Mount2 9/16" (6.51cm) 
Bottom Mount2 3/4" (6.99cm) 
Tweeter Mounting Depth
Flush Mount Depth1" (2.54cm) 
Surface Mount Height1 5/16" (3.33cm) 


Speaker Warranty3 years parts and labor (original purchaser) 

Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.

dX3055 Media

dX3055 Literature

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dX3055 Accessories