The actual power output of a sound system is affected by many factors

1. Output capability of the power amplifier: The power amplifier of the audio system is one of the key components for producing sound. The output capability of the power amplifier determines the maximum power that the system can provide. High-quality, high-power amplifiers are usually able to output louder volume and higher power.

2. Sensitivity of the speaker: The sensitivity of the speaker indicates the intensity of the sound produced by the speaker at a specific input power. The higher the sensitivity, the louder the speaker will produce for the same power input. This means greater sound output can be obtained with the same power input.

3. Impedance matching: The matching between the impedance (or load) of the speaker and the output impedance of the power amplifier affects the power output of the audio system. Typically, a system achieves maximum power transfer when the impedance of the speakers matches the output impedance of the amplifier.

4. Audio signal source: The strength and quality of the audio signal source input to the amplifier will also affect the power output. Stronger input signals can produce larger outputs, but care needs to be taken to avoid excessive distortion and distortion.

5. Stability of power amplifier: Some power amplifiers have a stability protection mechanism, which can protect the system from damage during high power output. Therefore, some amplifiers may reduce output after reaching a certain power threshold to protect themselves and the speakers.

6. Speakers and Environment: The design and build quality of the speakers, the size and type of speakers, and the acoustic characteristics of the environment (such as room size and sound absorption) all affect the actual sound quality and power output of a sound system.

7. Signal processing and tuning: Signal processing equipment and tuning settings can affect the balance, frequency response, and sound quality