Description
DS18 ZR500.1D 1-Channel Class D Monoblock | 500 Watts RMS @ 1Ω
A 1-ohm-stable Class D monoblock that delivers practical subwoofer power, onboard tuning, and system protection in a compact chassis.
Overview
Built for the application
The ZR500.1D produces 200 watts RMS at 4 ohms, 300 watts at 2 ohms, and 500 watts at 1 ohm, allowing one amplifier to support several common subwoofer wiring configurations.
Its Class D design reaches 85% efficiency, helping reduce current draw and heat while preserving the low-frequency authority expected from a dedicated monoblock.
At a glance
Why it belongs in the system
- Compact Class D monoblock designed to power subwoofer systems
- Delivers 200W RMS at 4 ohms, 300W at 2 ohms, or 500W at 1 ohm
- Adjustable 50Hz-220Hz low-pass and 10Hz-50Hz infrasonic filters
- Three-position 0/6/12dB bass boost at 45Hz supports system tuning
- Dash level control plus thermal, overload, short-circuit, voltage, and clip protection
Design and setup
Tune the amplifier to the enclosure
Use the 50Hz-220Hz low-pass filter to define the subwoofer handoff, the 10Hz-50Hz infrasonic filter to limit unwanted ultra-low content, and the 0/6/12dB bass boost at 45Hz for final system voicing.
Dash-level control
The included remote lets the driver adjust subwoofer level from the listening position.
Built-in protection
Thermal, overload, speaker-short, DC-output, voltage, and clip protection monitor the amplifier during operation.
Compact installation
The 8.46 x 7.24 x 2-inch chassis uses 4-gauge power and ground connections with a 60-amp fuse rating.
| SKU | ZR500.1D |
| Total Watts (Peak) | 1500W |
| RMS Power @ 4 Ohm | 200W |
| RMS Power @ 2 Ohm | 300W |
| RMS Power @ 1 Ohm | 500W |
| Frequency Response | 10-220Hz |
| Signal to Noise Ratio | >95dB |
| Efficiency @ 4 Ohm | 85% |
| Damping Factor | 160 |
| Input Impedance | 20K ohm |
| Channel Separation | N/A |
| Total Harmonic Distortion (THD) | 0.01% |
| Low Level Input Range | 0.2-6V |
| High Level Input | No |
| Selectable X-Over | LPF Fixed |
| X-Over Filter Range | 50-220Hz |
| Bass Boost Range | 0/6/12dB |
| Bass Boost Frequency | 45Hz |
| Infrasonic Filter | 10-50Hz |
| Phase Selector | No |
| Amplifier Class | Digital |
| Amplifier Type | Monoblock Subwoofer |
| Number of Channels | 1 |
| Minimum Impedance | 1 Ohm |
| Led Indicator | Clipping/protect/power |
| Power Input Terminal Size | 4 GA |
| Fuse Size | 60 A |
| Remote Level Control | Yes / Dash Mount |
| Cooling Fan | No |
| Voltmeter | No |
| Thermal Protection | Yes |
| Over-Load Protection | Yes |
| DC Output Protection | Yes |
| Short Circuit Output Protection | Yes |
| Voltage Input Protection | Yes 16 Volts |
| Clipping Protection | Yes |
| Body Color / Finish | Black Aluminum Brush |
| Overall Length | 8.46" / 215mm |
| Overall Wide | 7.24" / 184mm |
| Overall Height | 2" / 53mm |
| Heatsink Length | 7" / 180mm |
| Gross Single Unit Weight | 3.15Lb |