What is speaker impedance? Impedance effect on the quality of amplifiers, speakers

Impedance is one of the specifications that affects the speaker as well as determines the sound quality when combining karaoke speakers and amplifiers. Today, let’s learn about the meaning and influence of speaker impedance with Tnhelearning.edu.vn!

What is speaker impedance?

The impedance of the speaker is also simply understood as the resistance of that speaker, this is a technical parameter that affects the speaker as well as determines the sound quality when combining karaoke speakers and amplifiers.

Speaker impedance is measured in Ohm – symbol:

In addition, understanding speaker impedance is extremely important because it is directly related to the selection of devices to combine with speakers in sound systems.

How to calculate the impedance of a specific speaker

The specific speaker impedance formula is as follows:

• In series circuit, the impedance will be equal to the added values: Z = Z1 + Z2 =…= Zn
• In parallel circuits, the impedance will be more difficult to calculate, which is the inverse of their values: 1/Z = 1/Z1 + 1/Z2 +… + 1/Zn

​Today , speakers are manufactured with common speaker impedance levels of 4Ω, 6Ω or 8Ω. We can connect the speakers in series or parallel or a combination of both depending on the type of speaker and the purpose of use.

Meaning and effect of impedance on speaker quality

Low impedance speaker connection

– Low impedance speakers are widely used in daily life, from wedding sound systems, event sound systems to hall speaker systems, home karaoke systems all use this impedance. . The impedance value commonly used in these cases is 8Ω or 12Ω or 16Ω.

– For low impedance speakers, it is necessary to design so that the total input impedance of the speakers is greater than the output impedance of the amplifier. If you let the total speaker impedance be lower than the total impedance of the amp, it will lead to an unstable sound system and the amplifier not performing its function properly.

– In addition, low impedance speaker connections are often used for high-powered speakers, but must be connected at a close distance for the speaker to work properly (usually less than 10m). If the distance is outside the allowable range, the conductor will heat up very quickly and not be able to provide the necessary power for the speaker’s operation.

High impedance speaker connection

– Unlike low impedance speakers, high impedance speakers are often used in public sound systems, large, covering a large space, requiring a large number of conductors. In this case, using low impedance speakers will lead to energy loss and not enough to provide the whole system with normal operation. To solve this problem, people often use high impedance speakers.

– To use high impedance speakers, all speakers must have a transformer attached, so this type of speaker will allow adjusting the power level to suit each different use. In addition, with a high impedance connection, when connecting the speakers in parallel, it is very suitable for the design of the total input speaker to be smaller than the output power of the amplifier. We won’t have to do complicated speaker impedance calculations anymore.

Meaning and influence of impedance on amply coupling

You should note, when the total impedance of the speaker is less than the impedance of the amp, overload and fire will occur, even if the safe pairing condition is ensured that the amp’s power is greater than the average power. of the speaker.

The above article helped you understand how to determine what is the Impedance of a speaker? Meaning, impedance effect on the quality of amplifiers, speakers. If you have any questions, don’t forget to comment below!