Polk Ultramarine 10.8" Subwoofer - Black

Product #: UMS108B
The Polk UMS108B subwoofer uses air suspension technology to deliver 700 watts of power in a sleek, waterproof and UV/corrosion resistant package, perfect for life on the water.
Price: $356.99
Price: $356.99
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Polk Ultramarine 10.8" Subwoofer - Black

Polk Ultramarine 10.8" Subwoofer - Black

  • Features
  • Specs
  • Testing
  • Reviews
  • FAQ

Features for the Polk Ultramarine 10.8" Subwoofer - Black

  • Black housing and grille
  • Air Suspension Design
  • Cast Aluminum Basket
  • High Temp Voice coil
  • XKGlow LED Light Ring (Compatible with XKGlow Controller w/ App Support)
  • White Grille, Bridge, and Trim Ring
  • Snap On Grille Installation Option
  • Silver Cone
  • Insulated Tinsel Leads

Specifications for the Polk Ultramarine 10.8" Subwoofer - Black

SKU
UMS108B
Weight (Lbs)
5
Overall Dimensions
No
Speaker Color
Black
Sold as:
Individual
Max Power Handling (Watts)
700
Magnet (oz.)
70.8
Sensitivity @ 1W/1 Meter (dB)
89.2
Frequency Response (Hz-kHz)
20Hz to 2kHz
Nominal Impedance (Ohms)
4
Grille Diameter (Inches)
No
Mounting Hole Diameter (Inches)
8.9
Mounting Depth (Inches)
7.51
Watertight Standard Compliant
No
Tweeter Type
No
Tweeter Material
No
Polypropylene Woofer Cone
Yes
Fs (/Hz)
No
Vas (/Ltr)
No
Qts
no
Qes
no
Xmas (/mm)
No
ASTM B117 Salt Spray Exposure Standard Compliant
Yes
ASTM D4329 UV Exposure Standard Compliant
Yes

Testing

Our hands on Engineering Research and Development team builds quality into our JENSEN Marine products from the beginning by expertly designing each product from the ground up and validating all designs through extensive testing that is primarily conducted in our own on-site test lab. Therefore, JENSEN Marine Audio & Video products offer MORE durability and performance than you would expect from standard electronics.

Temperature/Vibration Chamber

Long duration product exposure to constant random frequency operational vibration and non-operational vibration to simulate rugged road conditions.  Simultaneous temperature cycle and vibration exposure are also conducted for additional data that is relevant to detecting potential material/component weaknesses and calculating product life expectancy.

 

 

 

 

 

Electrostatic Discharge

The last thing you need is for your radio to quit due to accidental static shock. That’s why our products go through the extensive Electrostatic Discharge Test on all exposed control areas as well as I/O connections so they can withstand the most severe static build up. Shocking, isn’t it?

 

High/Low Operating Temperature

Long-Duration product exposure to operational temperature extremes and rapid temperature cycles that are experienced in outdoor mobile applications. In addition, we test for High humidity introduced at high-temp to test the effectiveness of circuit corrosion protection (conformal coating).

 

High/Low Storage Temperature

Ensures our products will perform even after prolonged periods of storage with no power in extreme hot or cold temperatures.

 

Temperature Cycle

Used to ensure powered components withstand temperature fluctuations.

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