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Kicker 45KM42

4" 2-way marine speakers (2-ohm)

Item # 20645KM42

Kicker's 45KM42 4" marine speakers sound terrific and look great on any boat.

Kicker's 45KM42 4" marine speakers sound terrific and look great on any boat.

Item # 20645KM42

Ships free today

In stock
$129.99 Sale: -$32.03 off
$97.96 pair

Other options

Since 1974

Years of experience making people happy.

Hands-on research

We double check the details on each item.

60-day returns

If you don't love it, send it back.

About the Kicker 45KM42

Jon Paul

Small speakers produce superb sound

Kicker's 45KM42 4" marine speakers sound terrific and look great on any boat. Designed for life on the water, these speakers feature sealed motors, rubber cone surrounds, and locking terminal covers to keep spray away from the internal componentry. And their 2-ohm impedance will draw a little extra power out of your marine amplifier.

Small speakers produce superb sound

Kicker's 45KM42 4" marine speakers sound terrific and look great on any boat. Designed for life on the water, these speakers feature sealed motors, rubber cone surrounds, and locking terminal covers to keep spray away from the internal componentry. And their 2-ohm impedance will draw a little extra power out of your marine amplifier.

Rugged and versatile

These 4" speakers are tough enough for marine duty, but they're very easy on your ears. The durable poly woofers and 1/2" balanced dome PEI tweeters cut through wind, waves, and engine roar to deliver great sound without annoying harshness. Whether you're mounting them in a bulkhead, or installing them in a set of Kicker's custom enclosures, these speakers will make your day on the water just a little bit better than it was already.

Two sets of grilles

The package includes white and charcoal grilles so you can make these speakers blend in with just about any color scheme. Whichever color you choose, special UV treatments on the cones, surrounds, baskets, and grilles ensure that they'll stand up to harsh sunlight. Whether you're on fresh water or salt, these speakers will give you years of outstanding performance.

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Product highlights:

  • 2-way 4" marine speakers (pair)
  • UV-treated polypropylene woofer with Santoprene rubber surround
  • 1/2" PEI balanced dome tweeter with neodymium magnet
  • UV-resistant polymer basket
  • stainless steel mounting hardware included
  • sealed motor structure and locking terminal covers
  • comes with both charcoal and white grilles
Specs:
  • power range: 2-50 watts RMS (150 watts peak power)
  • frequency response: 60-20,000 Hz
  • sensitivity: 89 dB
  • impedance: 2 ohms
  • cutout diameter: 3.69"
  • frame diameter: 4.91"
  • mounting depth: 1-7/8"
  • warranty: 3 years
  • MFR # 45KM42

What's in the box:

  • Two 2-way speakers (each has a 6" length of speaker wire attached terminated with male quick slides)
  • 2 Charcoal grilles
  • 2 White grilles
  • 2 Plastic terminal covers
  • Two 7" Zip ties
  • Two 0.25" Crimp on female quick slides
  • Two 0.187" Crimp on female quick slides
  • Eight 1" Stainless steel screws
  • 8 Stainless steel speed clips
  • Owner's manual (English/ Spanish/ German/ French)

Customer reviews for Kicker 45KM42

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More details on the Kicker 45KM42

Pat M.

Features & specs

General
Speaker Size 4
Design 2-way
Tweeter Design 1/2" Balanced Dome
Tweeter Composition PEI
Woofer Composition Polypropylene
Woofer Surround Santoprene Rubber
Parts Warranty 3 Years
Labor Warranty 3 Years
Specifications
Sensitivity 89 dB at 1 watt
Frequency Response 60 - 20k Hz
Max RMS Power Handling 50
Peak Power Handling (Watts) 150
Impedance (Ohms) 2
Top-mount Depth (Inches) 1 15/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 3 3/4
Bolt Circle 4.5615
The Kicker 45KM42 replaces these items:

Product Research

Features

Marine-Ready: The Kicker KM series marine coaxial speakers are engineered to meet or exceed ASTM B117 Salt Fog (200 hour test) and ASTM G154 Accelerated UV (400 hour test) industry standards. The speakers feature sealed motors, cones, and locking wire terminal covers.

Grilles: Two pair of grilles are included, charcoal and white.

Terminal Cover: The speakers feature splash and spray resistant, locking terminal covers. These covers have water-resistant gaskets to prevent terminal corrosion and electrical shorting.

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