Kicker 45KM42 4" Coaxial Speakers

On Backorder (call for availability)Save $20
KickerSKU: 45KM42

$129.95 $149.95


Hear them loud and clear, the KM Coaxial Marine Speakers are built to pump out the tunes – and the fun - for years to come! Whether you mount your speakers in the hull, or KICKER® tower enclosures, you also get a pair of stout marine-grade grilles!


Our speakers are made to thrive in the water. UV treatments on injection-molded cones, Santoprene® surrounds, baskets and grilles all help maintain top-shelf performance. KM speakers will endure almost any weather conditions with splash-and-spray-resistant sealed motors and locking/sealed terminal covers. Speaker hardware is forged from rustproof, 316L stainless-steel. 

  • Two-Ohm Voice Coil
  • 1/2-Inch PEI Tweeter
  • Locking/Sealed Terminal Covers
  • UV-Treated Polypropylene Woofer With Santoprene® Surround
  • UV-Resistant Polymer Basket
  • 316L Stainless Mounting Hardware Included
  • Charcoal and White Grilles Included
  • Meets or Exceeds ASTM Standards for UV** and Salt/Fog Exposure***
    *ASTM B117 200 hr. Salt Fog Test
    **ASTM G154 400 hr. Accelerated UV Test

This KM Four-Inch Coaxial Speaker works best with 50 watts of recommended power.


Woofer (in,mm) - 4, 100

Tweeter (in,mm) - 1/2, 13

Tweeter Dome Material - PEI

Rated Impedance (Ω) - 2

Peak Power (watts, per ANSI/CTA-2031-A) - 150 

Recommended Amplifier Power (watts RMS) - 50

Sensitivity (1W,1m) - 89 

Frequency Response (Hz) - 60-20k

Mounting Hole Diameter(in,mm) - 3-3/4, 94

*For template to be accurate, ensure the print properties are set at 100% not scale to page.

Mounting Depth (in,mm) - 1-13/16, 46

LED Lighting - No

Grilles - Charcoal and White

What's in the Box:

  • 2 - 4" 2Ω Coaxials
  • 8 - Mounting Screws
  • 8 - Mounting Screw Clips
  • 2 - Wire Connection Cover
  • 2 Zip Ties


Have Questions About This Product? Message us here or:

Email Us At:

Call Us At: 315-458-5000

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