Hertz CBA 250

Hertz CBA 250 - 10-inch Active Enclosed Subwoofer with 250 W RMS

The Hertz CBA 250 is a compact active subwoofer in a sealed enclosure, delivering targeted deep bass to your car with 250 Watts RMS and an efficient Class-D amplifier. The 2S² design (2 Sides / 2 Sounds), the SSP Sub Smart Plug, and the plug-and-play connection terminal make installation and handling easier. Thanks to high- and low-level inputs, you can integrate it into both OEM systems and aftermarket radios. Filters, bass boost, and phase can be precisely adjusted to your setup.

Technical Highlights

• Integrated high-performance amplifier module with 250 W RMS and 500 W Peak
• He-Li technology (high efficiency/low impedance) for approx. 90% efficiency – without a DC-DC converter
• Butterworth low-pass 12 dB/Oct., 50–200 Hz, fully bypassable if desired (e.g., when using an external DSP/Pre-Out)
• Bass Boost 0–6 dB at 45 Hz for targeted enhancement of the deep bass range
• Stepless phase control 0–180° for clean integration with front systems
• High-level speaker input on the multi-pin connector for OEM radios
• Low-level RCA for aftermarket sources
• SSP (Sub Smart Plug): a single plug for quick, secure disconnection
• 2S² enclosure concept and plug-and-play connection terminal for easy integration

Technical Data

• Driver size: 250 mm (10 inches)
• Power (RMS/Peak): 250 W / 500 W
• Impedance: 0.4 Ohm
• Type: Active, enclosed subwoofer box
• Voice coil: 60 mm (2.36 inches), copper
• Frequency response: 20–200 Hz
• Magnet: High-flux density ferrite
• Magnet dimensions (D × d × h): 140 × 70 × 30 mm (5.51 × 2.76 × 1.81 inches)
• Cone: pressed paper
• Xmech (max. mechanical excursion): 14.75 mm

Installation & Compatibility

• Enclosure dimensions: Length 440 mm, Width 334 mm, Height 135 mm (158 mm with stand)
• Flexible integration: High-level for factory radios, Low-level (RCA) for aftermarket head units
• Compact design: ideal for trunk, side panels, or double floor
• Easy handling with SSP plug-in/unplug system and plug-and-play connections

If you're looking for an efficient, space-saving active subwoofer with practical features, the Hertz CBA 250 delivers controlled deep bass, easy connectivity, and clear adjustment options for your car hi-fi system.