Hertz SP 1.900 SPL Show Class D 1000W Monoblock Amplifier (SP 1.900)

The Hertz SP 1.900 is a compact monoblock amplifier designed to deliver powerful subwoofer performance in installations where space is limited. With 1000W RMS output at 1 and Advanced D-Class (ADC) technology, it combines high power with efficient operation and clean audio reproduction. Its compact design makes it suitable for motorcycles, trucks, sports cars, and other custom audio installations.

Delivering up to 1000W RMS at 1, the SP 1.900 provides substantial output in a space-saving chassis. Its compact dimensions allow for flexible placement in tight installation areas without sacrificing the power needed for a high-output subwoofer system.

Advanced D-Class (ADC) technology provides up to 87% efficiency, helping reduce wasted power while delivering strong audio output. Fully differential balanced inputs help reduce EMI and RFI interference, supporting cleaner sound in demanding vehicle environments.

The SP 1.900 features an IP55-rated aluminum chassis designed to resist water and dust. Its sealed power, speaker, and line inputs help protect connections from moisture and corrosion, while the fanless construction reduces moving parts and limits opportunities for dirt buildup. Conformal coating on the circuit board adds protection against condensation.

The amplifier includes adjustable filters and sound controls to help tailor bass output to your system. Its low-pass filter, subsonic filter, bass boost, and phase control provide flexibility during installation and tuning. USS (Universal Speaker Simulator) and ART (Automatic Remote Turn-On/Off) features support integration with aftermarket and OEM head units.

1000W RMS output at 1

Compact monoblock design

Advanced D-Class (ADC) technology

Up to 87% efficiency

IP55-rated aluminum chassis

Sealed, fanless construction

Fully differential balanced inputs to reduce EMI and RFI interference

Adjustable low-pass filter from 50Hz to 250Hz

25Hz subsonic filter with 24dB/octave slope

Bass boost adjustable from 0 to +8dB at 45Hz

Adjustable phase control from 0° to 180°

USS (Universal Speaker Simulator)

ART (Automatic Remote Turn-On/Off)

Conformal-coated circuit board

Model: SP 1.900

Brand: Hertz

Amplifier Type: Monoblock Class D

RMS Power Output: 1000W at 1

Efficiency: Up to 87%

Chassis Protection: IP55

Chassis Material: Aluminum

Low-Pass Filter: 50Hz250Hz

Subsonic Filter: 25Hz, 24dB/octave

Bass Boost: 0 to +8dB at 45Hz

Phase Control: 0°180°

Cooling: Fanless