



Hertz Cento CBA 250 Active 10 Inch Sealed Subwoofer Enclosure Amplifier Sub Box
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Hertz Cento CBA 250 Like the Audison APBX 10 AS2
250 (10) mm (in.) | 500 W | 0.4 Ohm | Active sealed subwoofer box
The authentic Hertz Sound Experience for the young enthusiasts
- 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.
- Defeatable filter to use the sub dedicated output of a processor.
- High-level audio input on multi-pin connector for maximum OEM integration and low level on RCA for aftermarket sources.
- ART turn on function (Automatic Remote Turn-On) selectable among: Remote-in, Hi-level, Audio signal.
- 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.
- Down-firing leveling feet with Velcro inserts included for a secure grip with the carpet, ensuring extreme ease of removal.
- Rounded corners allow easy placement in the trunk and act as a reinforcement to reduce enclosure resonances.
- 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.
- HRC AP remote control included.
- A sturdy metal grille is included, for total protection of the subwoofer driver.
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.
- 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.
- 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.
- The SSP (Sub Smart Plug) terminal block is provided with a Plug&Play connector to be able to disconnect the box easily and safely.
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.
Explore the full range in Sub Enclosures.
Specification
| Power Handling | - Continuous W 250 |
|---|---|
| Power Handling | - Peak W 500 |
| Impedance | Ohm 0.4 |
| 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 |
| Voice Coil | Type Copper |
More specs
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What's Included
- 10" Active subwoofer
- Grill
- Hi Level Input
- Smart Plug
- Remote Level Control
- Velcro Feet
- Owner's manual
Hertz
About the Hertz CBA 250
From our tech experts at CEN
An active subwoofer enclosure with a 10 inch driver, so sub, box and amplifier arrive matched rather than assembled by guesswork.
Who it suits
Drivers who want more low end without rebuilding the system or filling the boot. Compact active units are the sensible answer in cars where space is genuinely tight.
Our tech experts advise
It still needs a fused feed from the battery and a signal source, and setting level and crossover against your existing speakers is what makes it blend rather than boom. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Hertz range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Hertz
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Frequently Asked Questions
Q: Do I need an amplifier for this subwoofer?
A: Yes, unless it is an active (powered) subwoofer with a built-in amplifier. Passive subwoofers need an external amplifier matched to the RMS power and impedance shown in the Specification tab.
Q: What size enclosure does this subwoofer need?
A: The recommended enclosure volume is listed in the Specification tab where the manufacturer provides it. As a rule, sealed enclosures give tighter, more accurate bass while ported enclosures deliver more output. Contact CEN if you would like a recommendation for your build.
Q: What does RMS power mean?
A: RMS is the continuous power a subwoofer can handle, and it is the number that matters when matching an amplifier. Peak or max figures describe short bursts only. Match your amplifier output to the RMS rating in the Specification tab.
Q: Sealed or ported enclosure - which should I choose?
A: Sealed boxes are compact and produce tight, controlled bass suited to sound quality builds. Ported boxes are larger and produce more output at low frequencies, suited to those who want maximum impact. Either works well when built to the recommended volume.
Q: Can CEN build or supply an enclosure and fit everything?
A: Yes. CEN supplies enclosures and offers professional installation from our Nottingham premises, including amplifier wiring. Contact us to discuss your build.















































