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The Kicker 45KM44 is a pair of KM Series 4" (100 mm) marine coaxial speakers, rated at 50W RMS, from Kicker's KM Marine range. They feature a 1/2" PEI dome tweeter, IP66 certification, and 316L stainless steel hardware for use in boats, hulls and tower enclosures.
Key specifications
- Size: 4" (100 mm) coaxial, sold as a pair
- Tweeter: 1/2" (13 mm) PEI dome
- Impedance: 4 ohm
- Power handling: 50W RMS, 150W peak
- Sensitivity: 89 dB 1W/1m
- Frequency response: 60 Hz – 20 kHz
- Mounting hole: 94 mm, mounting depth 46 mm
- Protection: IP66, ASTM G154 UV and ASTM B117 salt fog tested
- Grilles: charcoal and white included
KM Marine 4" (100 mm) Coaxial Speaker System with White & Charcoal Grilles
45KM44
The KM Marine coaxial speakers deliver clear, powerful audio whether mounted in the hull or in Kicker tower enclosures. Both charcoal and white marine-grade grilles are included.
Built to withstand harsh marine environments, these speakers use UV-treated injection-moulded cones, Santoprene® surrounds, UV-resistant polymer baskets, and splash-and-spray-resistant sealed motors with Locking/Sealed Terminal Covers. All mounting hardware is 316L stainless steel.
Features
- IP66 certification (protected from dust and water jets/splash)
- Four-ohm voice coil
- 1/2" 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 G154 400 hr. accelerated UV test and ASTM B117 200 hr. salt fog test
Recommended power: 50W RMS.
Explore the full range in Kicker Marine.
Specification
| Speaker Size (in) | 4" |
|---|---|
| Style | Coaxial |
| Colour | Black/White |
| Impedance | (Ohms) 4 |
| RMS Power (W) | 50 |
| Peak Power (W) | 150 |
| Sensitivity | (dB @ 1W/1m) 89 |
| Frequency Response | (Hz) 60-20k |
| Height (cm) | 13 |
| Width (cm) | 13 |
| Depth (cm) | 7 |
| Protrusion (cm) | 2.4 |
| Mounting Hole Diameter (cm) | 9.4 |
| Mounting Depth | (cm) 4.6 |
| Minimum Enclosure Volume (Litres) | 8.50 |
| Tweeter Dome Material | PEI |
| Woofer Cone Material | Polypropylene |
| Woofer Surround Material | Santoprene |
| Single Or Pair | Pair |
| Grills | Included |
| Grill Style | Sports |
| Grill Colour | Black / White |
| Waterproof Rating | ASTM B117 200 hr Salt Fog Test Compliant |
What's Included
- Kicker 45KM44
- 2 x coaxial speakers with charcoal and white grilles
- 8 x mounting screws
- 8 x mounting screw clips
- 2 x wire connection covers
- 2 x zip ties
Kicker
About the Kicker 45KM44
From our tech experts at CEN
Marine-grade 4 inch speakers handling 50w RMS, with UV-stable cones and corrosion-resistant hardware so they survive sun, salt and damp.
Who it suits
Boats, ribs and open vehicles, plus campers and outdoor builds where speakers live in the weather. Worth considering for any open-topped vehicle that sits outside.
Our tech experts advise
Marine installs live or die on the wiring: corrosion protection at every joint and a properly fused feed. Mounting location does more for the sound than the speaker choice. get in touch and we will talk through the layout. See car audio installation.
Explore the full Kicker range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Kicker
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Frequently Asked Questions
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
Q: Are the Kicker 45KM44 speakers waterproof?
A: They carry IP66 certification, meaning protection from dust and water jets or splash, and meet ASTM standards for UV (G154, 400 hours) and salt fog (B117, 200 hours) exposure.
Q: What size hole do the 45KM44 speakers need?
A: A 94 mm mounting hole with 46 mm of mounting depth.
Q: Which grille colours come with the 45KM44?
A: Both charcoal and white grilles are included.
