MA840W - Poly-planar MA-840 80 Watt Subcompact Box Speaker | Aztek Computers
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SKU: DRV3KJ2MXS |  Mfg. Part: MA840W  | UPC: 731128084008  |  0 Reviews  |     Share

MA840W - Poly-planar MA-840 80 Watt Subcompact Box Speaker - White

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Product Overview

MA-840 80 Watt Subcompact Box Speaker - White

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. 

Features

  • Ideal for locations where other speakers won't fit
  • Ultra-low magnetic field speaker
  • Stainless steel grill and bracket

Specifications:

  • Type - 2-way Coaxial
  • Cone Size - 3" (76.2mm)
  • Speaker Impedance- 4 ohms
  • Peak Power - 80 watts
  • Continuous Power - 40 watts 
  • Overall Dimensions: 4-3/16" x 4-1/16" x 4-1/2" (106mm x 102mm x114mm)

*Sold as a Pair

Expert Overview

The Poly-Planar MA-840W subcompact box speakers are designed for environments where space is limited and equipment must withstand harsh conditions. These 2-way coaxial speakers feature a 3-inch cone size and deliver 40 watts RMS continuous power per pair, with an 80-watt peak power capacity. Their ultra-low magnetic field design prevents interference with sensitive navigation equipment like compasses and autopilots, making them suitable for marine or similar specialized applications. Constructed with polypropylene cones, stainless steel grills and brackets, and heavy-duty ABS enclosures, the MA840W speakers are corrosion-proof and waterproof. With overall dimensions of 4-3/16" x 4-1/16" x 4-1/2", they are engineered to fit into challenging installation locations while providing consistent audio output. These speakers are sold as a pair.

Technical Specifications

Subcompact Box Speakers
Part Number: MA-840W

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.

Features
  • Ideal for locations where other speakers wont fit
  • Only 4 x 4
  • Ultra-low magnetic field speaker
  • Stainless steel grill and bracket
  • Available in black and white


Specifications
  • Frequency Response: 70Hz to 14KHz (Single cone)
  • Peak Power: 80W per pair
  • Continuous Power: 40W RMS/pair
  • Impedance: 4 ohms
  • Overall Dimensions: 4-3/16 x 4-1/16 x 4-1/2 (106mm x 102mm x114mm)
  • Cone Size: 3-1/2 (89mm)

Product Details

  • Manufacturer:
  • Model Number:
  • ASIN:
  • UPC:
  • Condition:
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  • Updated:
  • Added:
  • Poly-Planar
  • MA840W
  • B000XBFLJ6
  • 731128084008
  • New
  • 1 lbs
  • 4 X 5 X 4
  • Today - Sep 16, 2026
  • Jun 05, 2018
Product Identifiers: Brand: Poly-planar • Part #: MA840W • UPC: 731128084008 • ASIN: B000XBFLJ6 • Category: Marine Audio

Frequently Asked Questions

What are the key dimensions of these speakers?

The overall dimensions for each speaker are 4-3/16" x 4-1/16" x 4-1/2" (106mm x 102mm x 114mm). They feature a 3-inch cone size.

What is the power handling capability of these speakers?

These speakers have a continuous power rating of 40 watts RMS per pair and a peak power rating of 80 watts per pair. The speaker impedance is 4 ohms.

Are these speakers resistant to environmental factors?

Yes, they are designed with polypropylene cones, stainless steel grills and brackets, and heavy-duty ABS enclosures, making them corrosion-proof and waterproof.

Will these speakers interfere with navigation equipment?

No, these speakers feature an ultra-low magnetic field design, which prevents them from adversely affecting navigation equipment such as compasses and autopilots.

MA840W - Poly-planar MA-840 80 Watt Subcompact Box Speaker - White

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