Polk Ultramarine speakers and subwoofers are designed to deliver premium quality sounds at top volume.

UMS66
- 6.6-inch waterproof speaker
- Available in black (UMS66B), smoke (UMS66S), or white (UMS66W)
- 150 watts maximum power
- Corrosion and UV resistant
- Free air design
- Cast aluminum basket

UMS77
- 7.7-inch waterproof speaker
- Available in black (UMS77B), smoke (UMS77S), or white (UMS77W)
- 200 watts maximum power
- Corrosion and UV resistant
- Free air design
- Cast aluminum basket

UMS88
- 8.8-inch waterproof speaker
- Available in black (UMS88B), smoke (UMS88S), or white (UMS88W)
- 250 watts maximum power
- Corrosion and UV resistant
- Free air design
- Cast aluminum basket

UMS108
- 10.8-inch waterproof subwoofer
- Available in black (UMS108B), smoke (UMS108S), or white (UMS108W)
- 700 watts maximum power
- Corrosion and UV resistant
- Air suspension
- Cast aluminum basket
UMS66
- 6.6-inch waterproof speaker
- Available in black (UMS66B), smoke (UMS66S), or white (UMS66W)
- 150 watts maximum power
- Corrosion and UV resistant
- Free air design
- Cast aluminum basket
- High temperature voice coil
- Snap-on grille installation option
- Silver cone
- Insulated tinsel leads
- Mica and polypropylene woofer
- Titanium dome tweeter
- 12.4 oz. magnet
- 4 Ohms nominal impedance
- 87.5 dB sensitivity
- 100 Hz – 20KHz frequency response
- 2.92-inch mounting depth
UMS77
- 7.7-inch waterproof speaker
- Available in black (UMS77B), smoke (UMS77S), or white (UMS77W)
- 200 watts maximum power
- Corrosion and UV resistant
- Free air design
- Cast aluminum basket
- High temperature voice coil
- Snap-on grille installation option
- Silver cone
- Insulated tinsel leads
- Mica and polypropylene woofer
- Titanium dome tweeter
- 25.6 oz. magnet
- 4 Ohms nominal impedance
- 90.2 dB sensitivity
- 70 Hz – 20 KHz frequency response
- 3.03-inch mounting depth
UMS88
- 8.8-inch waterproof speaker
- Available in black (UMS88B), smoke (UMS88S), or white (UMS88W)
- 250 watts maximum power
- Corrosion and UV resistant
- Free air design
- Cast aluminum basket
- High temperature voice coil
- Snap-n grille installation option
- Silver cone
- Insulated tinsel leads
- Mica and polypropylene woofer
- Titanium dome tweeter
- 40.3 oz. magnet
- 4 Ohms nominal impedance
- 89.4 dB sensitivity
- 50 Hz – 20KHz frequency response
- 4.06-inch mounting depth
UMS108
- 10.8-inch waterproof subwoofer
- Available in black (UMS108B), smoke (UMS108S), or white (UMS108W)
- 700 watts maximum power
- Corrosion and UV resistant
- Air suspension
- Cast aluminum basket
- High temperature voice coil
- Snap-on grille installation option
- Silver cone
- Insulated tinsel leads
- Mica and polypropylene woofer
- 70.8 oz magnet
- 4 Ohms nominal impedance
- 89.2 dB sensitivity
- 20 Hz – 2KHz frequency response
- 5.71-inch mounting depth