What is the relationship between volume and potentiometer

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

Why is the volume of some speakers very loud when the volume is rotated a little bit? What is the relationship between the volume and the potentiometer? What is the difference between the A10K potentiometer and the B100K potentiometer?

High signal impedance means high signal voltage and low signal current. A potentiometer with a large K number should be used here. If a potentiometer with a small K number is used, the signal voltage will be pulled down a lot and cause distortion.

Low signal impedance means low signal voltage and high signal current. A potentiometer with a small K number should be used here. If a potentiometer with a large K number is used, a low signal voltage through a resistance with a large K number will cause distortion.

The potentiometer uses a large K number for weak signals, and a small K number for strong signals. After changing the potentiometer, the sound is not related to the K number of the potentiometer. It is related to the voltage divider ratio of the potentiometer, and it is related to the type A or type B. A type should be used to adjust the volume.

If the adjustment rotation angle of a potentiometer is 300 degrees, dividing 300 degrees into 20 equal parts is 15 degrees.

Type A: The resistance of the first few equal parts does not change much into a small adjustment zone. With the increase of the torsion angle, the change of the resistance value of each equal part also increases, adapting to the perception of loudness by human ears. Resistance change of 50K type A stepping potentiometer: 49.9Ω 75Ω 100Ω 220Ω 340Ω 470Ω 604Ω 750Ω 1.1K 1.5K 2.2K 3.3K 5.1K 6.04k 6.04k 6.49k 5.49k 4.7k 3.3k 2.4k

Type B: The torsion angle is the same for each equal resistance value. The 50K potentiometer is divided into 20 equal parts, and the resistance change of each equal part is 2.5K (equivalent to the volume of the 11th equal part of the A type above). It appears that the potentiometer rotates a little bit and the sound is very loud.