Hertz Car Audio CBA 250 Active Bass Down-firing Enclosure
Product Overview
Hertz CBA 250 active subwoofer box, with the 10-inch driver, features a dedicated high-performance amplification module that enhances all the passive box technologies, such as the 2S²(2 Sides / 2 Sounds) design, the Plug & Play terminal block and ultra-compact size.
The SSP (Sub Smart Plug) terminal block is provided with a single Plug & Play connector to be able to disconnect the box easily and safely. The amplification module, with power outputs of 250W RMS, is developed with he-li technology (high efficiency / low impedance), which thanks to the absence of the DC-DC voltage booster reach the impressive 90% efficiency level, very close to the theoretical limit of the D-Class.
The Butterworth low pass filter at 12dB/Oct. with variable cut-off frequency (50-200 Hz) can be bypassed, when used with an external processor with pre-out output dedicated to the sub. The adjustable bass-boost control (0 ÷ 6 dB) at 45 Hz allows the user to emphasize the response on the lower side of the spectrum and the Phase control (0 - 180°) completes the equipment. The high-level speaker-in input on the multi-pole connector eases the integration with OEM audio systems while the low-level input on RCA is dedicated to the connection with after-market sources.
Product Specifications
| Size mm (in.) | 250 (10) |
| Power Handling - Continuous W | 250 |
| Power Handling - Peak W | 500 |
| Impedance Ohm | 0.4 |
| Design | Active sealed subwoofer box |
| Voice Coil Ø | 60 (2.36) |
| Frequency Response Hz | 20 - 200 |
| Magnet size D x d x h mm (in.) | 140 x 70 x 30 ( 5.51 x 2.76 x 1.81) |
| Magnet | High density flux ferrite |
| Cone | Pressed Paper |
| Xmech mm (in.) | 14.75 |
| Voice Coil Type | Copper |
mm |
in. |
|
A |
440 |
17.32 |
B |
334 |
13.14 |
C |
158 |
6.22 |
C1 |
135 |
5.31 |
Accessories
Remote Level Control
Included
Product Features
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Butterworth low-pass filter at 12dB/Oct. with variable cutting frequency (50-200 Hz), Subsonic filter, phase control (0 – 180°), and adjustable bass-boost 0÷6 db @ 45Hz.
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Defeatable filter to use the sub dedicated output of a processor.
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High-level audio input on multi-pin connector for maximum OEM integration and low level on RCA for aftermarket sources.
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ART turn on function (Automatic Remote Turn-On) selectable among: Remote-in, Hi-level, Audio signal.
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Box with ultra-low profile (6.22 in. / 158 mm) in air suspension, designed to take full advantage of the performance of the 10 inch high-impedance driver.
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Down-firing leveling feet with Velcro inserts included for a secure grip with the carpet, ensuring extreme ease of removal.
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Rounded corners allow easy placement in the trunk and act as a reinforcement to reduce enclosure resonances.
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The exclusive design of the cone, dust-cap, and basket geometry to achieve a wide linear excursion (9 mm in one direction), keeping the depth required for the assembly to a minimum.
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HRC AP remote control included.
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A sturdy metal grille is included, for total protection of the subwoofer driver.
Technologies
High Efficiency
Low Impedance
Integrated 500 W peak/250 W RMS @ 0.4 Ω D-Class amplifier featuring he-li technology (high efficiency / low impedance) without switching power supply, for a performance next to ideal.
Sub Smart Plug
The SSP (Sub Smart Plug) terminal block is provided with a Plug&Play connector to be able to disconnect the box easily and safely.
2 Side 2 Sound
Two sides, two sound design provides the ability to select between Down-Firing positioning to increase the low-frequency extension and Up-Firing installation to obtain more punch and definition.
Frequently Asked Questions
1. Is the Hertz CBA 250 suitable for my car?
Yes, the Hertz CBA 250 is compatible with most hatchbacks, sedans, SUVs, and MPVs thanks to its compact down-firing enclosure design and OEM integration options.
2. Will this produce deep bass or only mild bass?
The CBA 250 is designed to deliver deep, tight, and controlled bass suitable for daily listening while maintaining sound quality and musical accuracy.
3. How much boot space does the enclosure occupy?
The ultra-low-profile design is specifically engineered to save luggage space compared to traditional subwoofer boxes, making it ideal for daily-driven vehicles.
4. Does the package include a bass controller?
Yes. Hertz includes the HRC AP remote bass controller, allowing you to adjust bass levels directly from the driver's seat.
5. Can I remove the enclosure easily if I need additional boot space?
Yes. The Sub Smart Plug connector and compact enclosure design allow quick removal and reinstallation when needed.
6. Does it support both aftermarket and OEM head units?
Yes. The CBA 250 supports RCA low-level inputs for aftermarket systems and high-level inputs for factory systems.
7. Will this cause excessive rattling inside the car?
When installed and tuned correctly, the subwoofer delivers controlled bass with minimal rattling compared to larger ported enclosures.
8. Why should I buy the Hertz CBA 250 from Car Concepts Shop?
Purchasing from Car Concepts Shop gives you access to genuine products, Pan-India shipping, secure packaging, expert car audio guidance, and professional installation support.
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