This user manual covers the installation, wiring, operation, and troubleshooting of the Nakamichi NBF20.0A subwoofer amplifier.
The Nakamichi NBF20.0A is a subwoofer amplifier designed for vehicle audio systems. It features panel controls including a power status LED, phase shift switch, auto power on function, low pass filter, bass boost, and input gain control. The unit supports both high-level (speaker) and low-level RCA inputs to accommodate various head units.
| Rated Power | 100W |
|---|---|
| Max Power | 650W |
| Total Harmonic Distortion (THD) | <0.5% |
| Signal-to-noise ratio | 90dB |
| Frequency Response (Low Pass) | 20Hz - 180Hz |
| Input Sensitivity, High Level | 1.0V |
| Input Sensitivity, Low Level | 300mV |
| Low Pass Filter Range | 50Hz - 180Hz |
| Bass Boost Range | 0 - 12dB |
| Subsonic Filter Frequency | 20Hz (Fixed) |
| Fuse Rating | 20 A |
| Subwoofer Dimensions | 8" , 4 Ω |
When set to ON, the subwoofer turns on automatically when there is signal input and turns off if no signal is detected.
No, you should not connect both types of inputs to the amplifier at the same time.
An 8 gauge (or heavier) wire should be used to connect the ground cable.
The Remote Input must have at least 5V DC to function correctly.