User manual for Dayton Audio's 300W Class-D subwoofer amplifier with controls, connections, and safety instructions.
This user manual covers the Dayton Audio SPA300-D 300W Class-D Subwoofer Plate Amplifier, detailing its input/output connections, controls, and safety guidelines. It includes features like adjustable crossover frequency, bass boost, and auto-on functionality. The amplifier is designed for home stereo and home theater systems and offers protection against shorted loads and thermal faults.
The manual explains how to connect low-level inputs, the subwoofer output lead, and the power input. Controls include volume, frequency, phase, auto turn on/off, bass boost, and voltage selector. Safety instructions emphasize proper ventilation, avoiding moisture, and using only specified accessories.
| Rated Power Output | 300 watts RMS into 4 ohms @ < 1.5% THD |
|---|---|
| Signal to Noise Ratio | 101 dB A-weighted |
| Bass Boost | Switchable, 6 dB @ 30 Hz |
| Low Pass Adjustment | Variable 40 Hz – 200 Hz |
| Phase Adjustment | Switched 0° or 180° |
| Dimensions | 8-1/16" H x 7-1/16" W x 2-1/8" D |
| Power Requirements | 115/230 VAC, 60 Hz/50 Hz, 300W |
| Stand-By Power Rating | < 8.5W |
| Weight | 2.2 lbs. |
300 watts RMS into 4 ohms @ < 1.5% THD.
101 dB A-weighted.
Use the frequency control to set the highest frequency between 40 to 200 Hz.
It adds a 6 dB boost centered at 30 Hz for extended low-end response.