Hertz HMP 1D

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Hertz HMP 1D - D-Class Mono Bass Amplifier 300 WRMS x 1 at 2Ω (IP64 rated)

Hertz HMP 1D mono bass amplifier for outdoor adventures.  This compact powerhouse is built to withstand the elements, delivering 300W RMS of pure bass to your UTV, ATV, motorcycle, or boat. With a user-friendly crossover system and included remote control, it's easy to customize your sound experience on the go.


Thanks to the ultra-compact cast-aluminium chassis (IP64 rated), the HMP 1D amplifiers is nature-proof, being the ideal choice for UTV/ATV/motorcycle installations. It features an incredible power/size ratio and an easy setup thanks to the integrated crossover filter. 

The Front End section features a complete and bypassable crossover system, providing full system design flexibility with or without external processors, offering the user endless connection possibilities with any source. Inputs feature a special balanced circuitry, ensuring high rejection against electro-magnetic interferences, for noise-free results.

The level of HMP 1 D amplifiers can be remote controlled with the included HRC BM (Hertz Remote Control Bass Management). Connected to the Remote Control plug, this provides extremely precise volume level from the comfort of your seat.

General Specs

Channels 1
Power Supply
Power supply voltage / fuse: 11÷15 VDC / 1 x 15 A
Idling current (power ON/OFF): 1 A / 0.04 mA
Consumption @ 2Ω, 14.4 VDC (Max Musical Power): 15 A
Remote In: 4 ÷ 15 VDC - 1 mA
ART : Automatic Remote Turn-On/Off
Amplifier Stage
Distortion - THD (100 Hz @ 4Ω): 0.1 %
Bandwidth: 10 ÷ 500 Hz
S/N Ratio (A weighted @ 1 V): 105 dB
Damping factor (100 Hz @ 4Ω): 300
Pre-In sensitivity: LO: 0.2 ÷ 5 V
HI: 0.8 ÷ 20 V
Load impedance (MIN) @ 2 Ch:
Max size (mm/in.): 223 x 100.5 x 43.6 / 8.77 x 3.95 x 1.70
Weight (kg/lb.): 1.35 / 2.97
Adjustable Crossovers yes

Weight: 2.97 lb