What is Damping Factor (DF)? Meaning, principle of operation and formula for calculating coefficient DF

Many people use amps or other electronic devices but do not know about Damping Factor (DF) and how it is calculated. Let’s find out with Tnhelearning.edu.vn now what is Damping Factor? The meaning, principle of operation and the formula for calculating the DF coefficient are below!

What is Damping Factor?

Damping Factor is an important parameter of amplifiers and power amplifiers, indicating the level of damping, sound reduction or damping ability of the device. The display index of Damping Factor is a specific number, such as 100, 400,…

Damping Factor directly affects the ability of the diaphragm to vibrate, especially for the woofers of an amplifier or an amplifier. Bass sound will become clearer, firmer and more compact when the Damping Factor index is large and vice versa.

How does Damping Factor work?

The sound emitted by the amplifier in the condition of the magnet’s magnetic field will cause the diaphragm to vibrate uncontrollably and create a voltage flow. This type of voltage will confront the sound coming from the diaphragm and create distortion in the sound. Damping Factor will be responsible for suppressing this voltage.

In other words, Damping Factor works on the principle of reducing the SPL pressure created by the moving diaphragm. When the supply signal stops, the Damping Factor will interfere with the inertia of the diaphragm, timely arrest all unnecessary vibrations and help the speaker produce better quality sound, avoiding interference. at the same time make the speaker more durable.

How to calculate Damping Factor of thrusters

The formula for calculating the Damping Factor of the thruster: Damping Factor (DF) = Z(L)/Z(A)

In there:

• Z(A): Output impedance of the power amplifier or amplifier.
• Z(L): Speaker impedance.

From the above formula, it can be seen that the index of Damping Factor and impedance will change together:

• High speaker impedance > DF will increase, the impact on the diaphragm will be lower.
• The impedance of the speaker or small pusher > Large DF makes the bass more compact and better.

How to choose the right pusher, amp, DF index?

Based on the operating principle of Damping Factor, we can see that the higher the selection of the DF index, the better the diaphragm will oscillate. However, in some cases, the DF index is only at 80-100 but the sound quality is very good, partly due to the manufacturer.

In general, you should choose an amp, an amplifier with a DF rating of 400 or higher for 8Ω impedance speakers to get the best possible sound quality.

Some other indicators that affect push quality

The output sound quality not only depends entirely on Damping Factor but also influenced by a number of other parameters such as:

• Frequency response range of the product.
• Sound Harmonic Distortion (THD).
• Speaker wire cross-section (which affects the bass control of the speaker bass diaphragm).

Above is an article about Damping Factor (DF) – Definition, meaning, operating principle and formula for calculating DF factor. Hope the article will be useful to you and don’t forget to leave a comment below if you have any questions!