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Polk Audio MM840 Open Box

8" Single 4 ohm Marine Certified Mobile Monitor Series Car Subwoofer

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8" Marine Mobile Monitor MM Series Subwoofer • Single 4 ohm • 500 Watts Peak • 250 Watts RMS • Polymer Woofer Cones • Butyl Rubber Surround • Carbon Composite Basket • High Temperature Copper Voice Coil

Learn more about the LS-mm840-OB

We apologize

This item has been discontinued

Product Highlights


8" Marine Mobile Monitor MM Series Subwoofer • Single 4 ohm • 500 Watts Peak • 250 Watts RMS • Polymer Woofer Cones • Butyl Rubber Surround • Carbon Composite Basket • High Temperature Copper Voice Coil

Description


Polk Audio brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

  • 8" Marine Single 4 ohm Mobile Monitor MM Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • Impedance: Single 4 Ohm
  • Polymer woofer cones
  • Butyl rubber surround
  • Heavy duty input terminals
  • Carbon composite basket is lightweight and durable
  • Klippel optimized components for the best possible performance
  • 1-1/2" High temperature copper voice coil
  • Frequency response: 26-200 Hz
  • Sensitivity: 90 dB
  • Marine certified to withstand a harsh marine environment
  • 90-Day SonicElectronix.com warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Polk Audio MM840 Open Box Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Polk Audio MM840 Open Box Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Polk Audio MM840 Open Box Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Polk Audio MM840 Open Box Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Mobile Monitor Series
Subwoofer Size
8"
Peak Power Handling
500 watts
RMS Power Handling
250 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Frequency Response
26 - 200 Hz
Sensitivity
90 dB
Xmax (millimeters)
20 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polymer
Woofer Surround
Butyl Rubber
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Top-Mount Depth (Mounting Depth)
4"
Cutout Diameter
7-1/16"
Shallow Mount Installation
No
Warranty and Return Policy
Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

MM840-OB

Weight:

10.00lbs

Internal SKU:

LS-mm840-OB

Internal Product ID:

73153

Product and How-to Videos


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