Hertz Cento Power CP 1.2K Mono 1 Channel Sub Amp Subwoofer Amplifier 1200w RMS
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The Hertz Cento Power CP 1.2K is a mono Class D subwoofer amplifier delivering 1200W RMS at 2 ohms (650W RMS at 4 ohms). It is part of Hertz's Cento Power range.
Key specifications
- Channels: 1 (mono), Class D
- Output power: 1200W RMS x 1 at 2 ohms, 650W RMS x 1 at 4 ohms
- Minimum load: 2 ohms
- Efficiency: 89%
- Inputs: Pre-In (0.32 to 8 V RMS) and Speaker-In (1.6 to 40 V RMS)
- Low-pass filter: 50 to 250 Hz at 24 dB/oct
- Subsonic filter: 25 Hz at 24 dB/oct; bass boost 0 to 9 dB at 50 Hz
- Operating voltage: 9 to 18 V DC
- S/N ratio: 102 dBA
- Casing: compact aluminium diecast
The CP 1.2K is a monophonic ADC (Advanced Class-D) amplifier with an efficiency of over 89%. Its compact aluminium diecast body is fully bridgeable and built for straightforward integration into both traditional and modern vehicle setups.
A built-in Universal Speaker Simulator and a wide 9 to 18 V DC operating range make it compatible with factory head units, new class SB head units, and electric vehicles. Balanced input circuitry on both Pre-In and Speaker-In connections provides advanced noise rejection for clean sound.
- Plug and play installation via durable long-term Molex connections.
- LED status indicator, solid machined terminal block, and a removable top panel protecting the control panel.
- All controls remain accessible from the top after installation.
- Adjustable input levels, high/band/low-pass crossover filters, bass boost, variable phase control, and a subsonic filter.
- Universal Speaker Simulator adapts input sensitivity from 1.6 to 40 V RMS for compatibility with new class SB head units.
- Automatic remote turn-on/off activated by OEM radio speaker outputs.
- Full-range pre-outs available with both Speaker-In and Pre-In level inputs.
- HRC 02 remote control compatible for customised subwoofer level adjustment.
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Specification
| Channels | 1 |
|---|---|
| Minimum load impedance @ 1 Ch | 2 Ω |
More specs
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What's Included
- Hertz Cento CP 1.2K
Hertz
About the Hertz CP 1.2K
From our tech experts at CEN
A monoblock amplifier for subwoofer duty from the Hertz Cento line, rated at 1200w RMS. Everything it makes goes to the bass.
Who it suits
Anyone adding a subwoofer that needs real power behind it.
Our tech experts advise
Power figures mean little until the amplifier is matched to the speakers and the gains are set with a meter rather than by ear. It needs a fused feed from the battery on the correct cable gauge. 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: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How much power does the Hertz CP 1.2K produce?
A: It delivers 1200W RMS into 2 ohms and 650W RMS into 4 ohms, measured at 1% THD. The minimum load is 2 ohms.
Q: Can the CP 1.2K connect to a factory radio without RCA outputs?
A: Yes. It has balanced speaker-level inputs (1.6 to 40 V RMS) with a Universal Speaker Simulator, and it can switch itself on automatically from the radio's speaker outputs.
Q: Can I control the subwoofer level from the driving seat?
A: The CP 1.2K is compatible with the Hertz HRC 02 remote control, which adjusts subwoofer level from -20 to +6 dB.
