The Hertz HMS 10B-2 is a 250 mm (10") marine subwoofer built for infinite-baffle (free-air) use, delivering punchy low end and reliable operation in harsh marine environments.

• IP65 protection
• Size: 250 mm (10")
• Peak Power: 500 W
• RMS Power: 250 W
• Impedance: 2 Ω
• Sensitivity: 88.5 dB (SPL)
• Voice coil: 50 mm (2")
• Fs: 43 Hz
• 2 Ω configuration to maximise amplifier output for stronger bass from compact installations
• Marine-proof construction: UV, salt-fog, vibration, water spray, thermal shock and dust resistant; aramid spider; silicone-insulated lead wires; gold-plated corrosion-resistant brass terminals
• Hertz HMS 10B-2 Datasheet (PDF)
• Hertz Speakers & Subwoofers Manual (PDF)

Ideal for boat audio systems needing compact, high-output bass — consult the datasheet and manual for mounting, enclosure and electrical details.

Infinite-baffle (free-air) installations require an airtight mounting or sealed location behind the subwoofer to provide proper acoustic loading; ensure the rear chamber is sealed and the unit is mounted in a suitable location. Refer to the datasheet for recommended mounting and sealing guidelines.