Hertz HCP 4MDK boat amplifier

Marine Amplifier Hertz HCP 4MDK

The new HCP 4MDK features the latest generation of a stable D-Class output stage at 2 Ω, achieving an impressive RMS power of 150 W x 4 with an excellent signal-to-noise ratio of 105 dB. Extremely versatile and fully featured, it is equipped with Speaker-In and RCA-In inputs to work with any head unit. It was designed to also operate in mono (selectable mode), allowing creation of a two-zone stereo or single-zone stereo system with a subwoofer. The heat dissipation system is optimized so that heat is transferred into the heatsink and then expelled along the sides of the amplifier. The four-channel marine amplifier HCP 4MDK features a compact design and enhanced resistance to moisture and salt. The crossover section of the HCP M amplifiers provides extreme flexibility: fully adjustable low-pass and high-pass filters with 12 dB/Oct. slopes and Bass Boost to emphasize low frequencies.

About the brand

The best-known European brand in the car hifi segment? Hertz audio! The brand was established in 1998 in Italy. Hertz belongs to the Elettromedia group, which also owns Audison and Connection. How was the name Hertz born? Hertz – the unit of frequency, the number of cycles per second (Hz). Everything at Hertz car audio reflects a brand passionate about music that cares about everything it produces. Over the years this company has built an excellent team of talented and dedicated engineers committed to designing products at the highest level. Every new project and product is developed primarily from the needs of the brand’s fans and is designed to directly connect them with the emotional power of music. Hertz’s philosophy is a unique combination of premium sound, living tradition, clever innovation and high quality, combined across a complete product range for maximum customer satisfaction. Hertz offers a complete range of speakers, amplifiers and subwoofers that lets you experience the excitement of high-quality sound in any situation. Deep knowledge of in-car acoustics, design requirements and manufacturing processes keeps Hertz products at a high level. To achieve high quality standards, Hertz does not settle for testing samples from each batch: it uses the most advanced testing tools and a computerized control process supervised by highly qualified personnel to analyze every component. This results in a negligible warranty rate and consistently high quality across all Hertz products.

Catalog number	HCP 4MDK
Brand	Hertz
Links	Official web presentation
Number of amplifier channelsAmplifiers are divided into: - Monoblocks - 2-channel - 3-channel - 4-channel - 5-channel - 6-channel - multi-channel Each channel is used to power one speaker for the coaxial type, or one side if they are component speakers. Monoblock type amplifiers are mainly used for subwoofers. 2-channel are suitable for both subwoofers and, for example, the front pair of speakers in a car. 3-channel is used for front or rear speakers + subwoofer. 4-channel are used for front + rear speakers or 1 pair of speakers + subwoofer. 6 or 5-channel are used for 2 pairs of speakers + subwoofer, most often. Bridging means connecting the amplifier to a bridge, using the + pole from one channel and the - pole from the other channel. In most cases this is shown as "BRIDGED" on the amplifier.	4
RMS power into 4 ΩRMS power when loading speakers or subwoofer at 4 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier.	4 x 120 W
RMS power into 2 ΩRMS power when loading speakers or subwoofer at 2 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier.	4 x 220 W
Harmonic Distortion (THD)Total harmonic distortion indicates how much the input signal is distorted in the amplifier. Distortions appear as overtones contained in the output signal. The proportion of originally absent parts of the signal is given as a percentage, typical values are between 0.001% and 0.5%. Distortion is measured in their power band. If it exceeds the limit of 0.7% from a certain power, it is the value of the output power of the given amplifier, from which it no longer plays without distortion and from which the distortion usually increases steeply, so that no further increase in power can be counted on. The lower the value, the better.	0.01 %
Signal-to-noise ratioThe signal-to-noise ratio means that the output signal always contains noise. The signal-to-noise ratio expresses how much of this noise is compared to the useful signal. The so-called A value is given, which does not take deep and very high frequencies into account. This corresponds to the characteristic of human hearing, which is not so sensitive to deep frequencies, especially below 1 kHz. The higher the value, the better the amplifier is.	105 dB
High pass filter (HPF)HPF / HP or The "hi pass filter" offers the option of setting the amplifier using a potentiometer so that medium, possibly mid-bass and treble frequencies play upwards from a certain frequency. Example: Amplifiers most often have an HPF from 40 to 300 Hz. If we set the potentiometer to a value of approx. 150 Hz, the sound will be clipped so that it plays frequencies from 150 Hz up to the maximum upper limit of the entire frequency range of the amplifier, perhaps up to 20,000 Hz. We recommend setting this potentiometer in the range of 80-160 Hz. Thanks to this setting option, the speakers can handle a higher performance, as you will not overload them with bass in the lower frequency range.	A/B: 80 Hz @ 12 dB/Oct.
Low-pass filter (LPF)LPF / LP or "low pass filter" offers the possibility to adjust the amplifier using a potentiometer so that the lower band plays only the frequencies in a certain band that you need. This filter is used to adjust the frequency range for the subwoofer, so that it does not overload or distort the sound. Example: Amplifiers most often have an LPF from 20 to 300 Hz. We recommend setting this potentiometer in the range of 45-80 Hz.	A/B: 50 ÷ 500 Hz @ 12 dB/Oct.
Bass boostBass boost or bass enhancement. With this function, the bass itself can be emphasized, at a high level of bass boost, the speakers and the subwoofer can distort a lot and the sound will be worse than better. We therefore recommend using the "bass boost" function wisely. With maximum use of bass boost, there is a risk of damage to the speakers and thus to the subwoofer.	0 / 6 / 12 dB
Damping factorDF - Damping Factor . It is the ratio of the load (repro + cables, crossover, etc.) to the internal resistance of the amplifier. The bigger the DF, the more controlled the bass. Amplifiers with a lower DF tend to hum. Subwoofers with a higher Q in the bass reflex and sometimes in the enclosure will also cause humming.	120
The value of the fuses on the amplifierFrom the value of the fuses on the amplifier, you can get a true picture of the real performance of the amplifier.	2 x 20 A
Dimensions of the amplifier	315 x 190 x 50 mm
Mass	2.73 kg
Other	Resistant to corrosion, UV radiation, salt spray and splashing water (IP64)