Some Notes on Power Amplifiers

To reasonably configure the power amplifier and speakers, two issues must first be clarified, one is the natural properties of the music signal, and the other is the nature of the output power of the power amplifier.

Here is the content list:

• Reach rated power

• The output and power of the power amplifier

Reach rated power

Only when the power amplifier and the speaker are fully matched, that is, when the load impedance of the speaker is close to the same as the output impedance of the power amplifier, the most effective coupling can be obtained between the two, and the power amplifier can effectively output the specified rated power. At this time, the output power of the power amplifier is the highest and the distortion is the smallest. If the load impedance is too large or too small, it will cause adverse effects, causing the power amplifier to generate greater distortion, resulting in a decrease in output power, which cannot reach the rated output power.

The output and power of the power amplifier

We know that the energies of musical notes are completely unequal. Its energy in the low range is relatively much larger than that in the midrange and high range. In general, high-frequency bands have less energy than low and mid-frequency bands. That is to say, in a speaker, the power required by the tweeter is low.

For example, the treble unit in the speaker system can withstand 100w power, the actual power it can withstand is only 10w. If the tweeter chooses a speaker that can withstand 20w power, then the treble unit in the system can be 100% safe. That is to say, the power capacity of each unit in the speaker system matches the energy distribution properties of the music signal.

The output power of the power amplifier is not absolute under certain working conditions. For example, when the volume control potentiometer is adjusted very large or the input signal is particularly large, the output power of the power amplifier may exceed the output power value specified by the manufacturer. Because the output power of the power amplifier is the rated output power under the premise of the specified total harmonic distortion. If more output power is required, then a power amplifier will suffice in this case, but then the output level will increase considerably, causing severe distortion.

Guangzhou Xinhe Audio Equipment Co. Ltd., www.xinhesound.com, is a dynamic, creative, experienced, and responsible team. Everyone on the team is committed to providing the best products and services to our customers. Our company has developed a wide range of Professional Amplifiers which are tested extensively before leaving the factory to ensure quality. As a professional manufacturer, we specialize in manufacturing the highest quality Professional Amplifiers. We have conducted a large number of tests before leaving the factory to ensure the quality. You can consider using our cost-effective products. Thank you for your time! We are looking forward you to coming to contact us!