Skip to content Skip to navigation menu
Live Chat

Subcompact Box Speaker, Black


Add to My List

Extended Product Protection with PLUS Plan!

In stock online.
Model # 15113152 | Mfg # MA840-B
These subcompact box speakers are designed to fit in difficult locations and still offer high quality music sound. The ultra-low magnetic field design lets you mount them anywhere without adversely affecting navigation equipment such as compasses and autopilots. Polypropylene cones, stainless steel grills and brackets, and heavy-duty ABS enclosures make them corrosion-proof and waterproof. Dual cone design with 3” main cone size, sold individually.


  • Ideal for locations where other speakers won’t fit
  • Only 4” x 4”
  • Ultra-low magnetic field speaker
  • Stainless steel grill and bracket
  • Available in black color (Part# MA840B) and white color (Part# MA840W) speaker


  • Frequency Response: 70Hz to 14KHz
  • Peak Power: 80 watts per pair
  • Continuous Power: 40 watts RMS/pair
  • Impedance: 4 ohms
  • Overall Dimensions: 4 3/16" x 4 1/16" x 4 1/2" (106mm x 102mm x114mm)
  • Cone Size: 3.00" (76.20mm)
  • Sold individual/each

Subcompact Box Speaker, Black

Color Black
Design 2-Way
Features Corrosion Proof

Type Box
Wattage 80 Watts

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.