Hertz CP-4800 4-Channel Class D Car Amplifier

The Hertz Cento Power CP 4.800 is a compact four-channel Class D car amplifier designed to add clean, controlled power to an upgraded speaker system. It can operate in four-, three-, or two-channel configurations, giving installers flexibility for full-range speakers, an active front stage, or a front-stage-and-subwoofer arrangement. With 110 watts RMS per channel at 4 ohms, it is suited to systems that need substantially more output than a factory radio can provide.

For listeners building a detailed daily-driver system, the CP 4.800 supports a wide specified bandwidth from 10 Hz to 47 kHz at -3 dB and carries Hi-Res Audio certification with response stated to 41 kHz. Its Advanced D-Class output stage is rated at 85% efficiency, helping it deliver high output while managing space and electrical demand. The result is a versatile amplifier platform for component speakers, coaxials, or properly matched subwoofer channels.

The amplifier accepts both low-level preamp signals and high-level speaker signals, making it useful with aftermarket receivers as well as many factory audio systems. Its speaker-level input sensitivity range is 1.6 to 40 Vrms, while preamp input sensitivity is adjustable from 0.32 to 8 Vrms. Hertz also provides automatic remote turn-on capability from a compatible BTL speaker-level source.

Independent front and rear crossover controls allow each channel pair to be configured for full-range, high-pass, or low-pass use. Both front and rear sections offer adjustable high-pass and low-pass filtering from 50 to 4,000 Hz at 12 dB per octave. A 50 Hz bass boost adjustment and rear-channel subwoofer-level control add further system-tuning options.

The CP 4.800 is housed in an aluminum die-cast chassis measuring 8.07 by 6.10 by 1.89 inches, helping it fit in constrained installation locations. It includes Plug & Play connection cables for signal and speaker wiring, along with the required 40 A fuse. For systems needing convenient bass-level adjustment, it is compatible with the optional Hertz HRC 02 remote control when the rear low-pass filter is active.

Key Features

• Four-Channel Class D Design: Powers front and rear speakers or supports bridged system layouts.
• 760-Watt Total RMS Output: Delivers substantial power in a compact amplifier chassis.
• Hi-Res Audio Certification: Supports extended high-frequency reproduction to 41 kHz.
• Preamp And Speaker-Level Inputs: Works with aftermarket or compatible factory audio sources.
• Adjustable Front And Rear Crossovers: Helps match each channel pair to its assigned speakers.
• Optional HRC 02 Compatibility: Enables rear-channel subwoofer level adjustment from the driver seat.

Design & Installation

The CP 4.800 uses a durable aluminum die-cast case with a compact footprint and accessible top-mounted tuning controls. Its chassis measures 205 x 155 x 48 mm, while the specified mounting footprint is 171.5 x 121.5 mm. The amplifier weighs 1.75 kg and uses one 40 A fuse.

Use either the supplied preamp-input harness or speaker-input harness, not both at the same time. Mount the amplifier securely with adequate ventilation, connect it to a properly fused 12 V vehicle electrical system, and match speaker loads to its rated minimum impedance requirements. A 4 AWG power cable is specified in Hertz's installation guidance; bridged operation requires a 4-ohm load.