Factory Audio Upgrade
Ultra-Durable
Marine Certification
Multiple Configurations
50 Year Heritage
Engineered in Baltimore
25 Products
25 Products
Super Efficient Class D Bridgeable 4-Channel Mobile Audio Amplifier
$379.00
6.5" Component Speaker System with Ultra-Marine Certification (Pair)
$279.00
6x9" Three Way Speakers with Ultra-Marine Certification (Pair)
$229.00
12" Dual Voice-Coil Subwoofer with Ultra-Marine Certification
$179.00
5.25" Component Speaker System with Marine Certification (Pair)
$179.00
5x7" Coaxial Speakers with Ultra-Marine Certification (Pair)
$179.00
6.5" Component Speaker System with Marine Certification (Pair)
$179.00
5.25" Coaxial Speakers with Ultra-Marine Certification (Pair)
$179.00
12" Subwoofer with Ultra-Marine Certification
$179.00
10" Dual Voice-Coil Subwoofer with Ultra-Marine Certification
$169.00
10" Subwoofer with Ultra-Marine Certification
$169.00
8" Dual Voice-Coil Subwoofer with Ultra-Marine Certification
$149.00
8" Subwoofer with Ultra-Marine Certification
$149.00
6x9" Coaxial Speakers with Marine Certification (Pair)
$129.00
12" Dual Voice-Coil Subwoofer with Marine Certification
$119.00
12" Subwoofer with Marine Certification
$119.00
5x7" Coaxial Speakers with Marine Certification (Pair)
$99.00
6.5" Coaxial Speakers with Marine Certification (Pair)
$99.00


Marine or Ultra-marine certification
You'll experience great sound whether you're on the road or on the waves. Polk DB Plus and MM1 speakers feature Marine or Ultra-marine certification for long-lasting protection against virtually anything mother nature can dish out.