Advantages and disadvantages of inverted and closed speakers and how to choose them?
author: Holly
2022-12-03
Advantages and disadvantages of inverted and closed speakers and how to choose them?
Among the common home theater speakers, the inverted type speakers and sealed type speakers account for the majority, while other types of speakers have various structural forms, but the proportion is relatively small.
Inverted sound box is provided with an inverted hole on the sound box panel. Because of the holes, the sound in the box can radiate to the outside. It has higher power bearing capacity and lower distortion than the enclosed speaker, and is characterized by wide frequency response, high efficiency and high sound pressure. Under the condition of the same volume and unit, the inverted speaker can obtain a lower low-frequency diving cut-off frequency than the closed speaker, thus reducing the requirements on the drive power of the amplifier, which is often said by players to be "easier to push".
There are always advantages and disadvantages. Because the diameter and length of the inverted tube are fixed and cannot be adjusted, the inverted speaker can only be designed according to an approximate ideal parameter value. In addition, when it overlaps with the sound wave in front of the speaker unit, there is a problem that the original wave pattern is distorted due to time difference, which leads to the subjective perception that the transient characteristics of the inverted speaker are poor, Especially when replaying low-frequency burst signals, the speakers of this type of design are a bit sloppy.
Enclosed sound box, which is structurally sealed except for the speaker mouth, so that the front and back of the speaker paper basin are separated into two non ventilated spaces, one is an infinite space outside the box, and the other is a closed space inside the box with a certain volume. Because the space inside and outside the box is isolated from each other, acoustic short circuit and mutual interference can be eliminated. It is characterized by relatively simple structure and good transient response.
As the air volume inside the closed speaker remains unchanged, the diaphragm of the speaker unit can form an appropriate damping with the air pressure in the speaker when it vibrates. When the speaker unit is pushed forward or retracted, it must pay kinetic energy. Therefore, generally speaking, the efficiency is lower than that of the inverted speaker, the requirements for the unit are relatively strict, and the low-frequency diving cut-off frequency is relatively higher than that of the inverted speaker, The power requirements for power amplifiers are also much higher.
What about the subwoofer? In fact, the principle is basically the same. The low frequency diving of the closed design bass speaker is slightly poor, but it is sensitive and fast; The low frequency extension of the inverted bass speaker is better, but the transient and linear feeling will be relatively poor.
As for the choice, it should be based on personal needs and actual use.
Inverted sound box is provided with an inverted hole on the sound box panel. Because of the holes, the sound in the box can radiate to the outside. It has higher power bearing capacity and lower distortion than the enclosed speaker, and is characterized by wide frequency response, high efficiency and high sound pressure. Under the condition of the same volume and unit, the inverted speaker can obtain a lower low-frequency diving cut-off frequency than the closed speaker, thus reducing the requirements on the drive power of the amplifier, which is often said by players to be "easier to push".
There are always advantages and disadvantages. Because the diameter and length of the inverted tube are fixed and cannot be adjusted, the inverted speaker can only be designed according to an approximate ideal parameter value. In addition, when it overlaps with the sound wave in front of the speaker unit, there is a problem that the original wave pattern is distorted due to time difference, which leads to the subjective perception that the transient characteristics of the inverted speaker are poor, Especially when replaying low-frequency burst signals, the speakers of this type of design are a bit sloppy.
Enclosed sound box, which is structurally sealed except for the speaker mouth, so that the front and back of the speaker paper basin are separated into two non ventilated spaces, one is an infinite space outside the box, and the other is a closed space inside the box with a certain volume. Because the space inside and outside the box is isolated from each other, acoustic short circuit and mutual interference can be eliminated. It is characterized by relatively simple structure and good transient response.
As the air volume inside the closed speaker remains unchanged, the diaphragm of the speaker unit can form an appropriate damping with the air pressure in the speaker when it vibrates. When the speaker unit is pushed forward or retracted, it must pay kinetic energy. Therefore, generally speaking, the efficiency is lower than that of the inverted speaker, the requirements for the unit are relatively strict, and the low-frequency diving cut-off frequency is relatively higher than that of the inverted speaker, The power requirements for power amplifiers are also much higher.
What about the subwoofer? In fact, the principle is basically the same. The low frequency diving of the closed design bass speaker is slightly poor, but it is sensitive and fast; The low frequency extension of the inverted bass speaker is better, but the transient and linear feeling will be relatively poor.
As for the choice, it should be based on personal needs and actual use.
