1、 Some sounds require time to confirm their performance, and this time process varies from several tens of hours to several tens of days depending on the speaker.

2、 Due to physical factors, the bass extension of the small bookshelf audio system is relatively low, as the dynamic range of the bass is not too large and has little practical significance.

3、 Public broadcasting equipment, sound engineering installation companies say that the nominal impedance of sound is commonly 4 ω And 8 ω Two types. Although a 4-impedance speaker can increase the output power of power amplifiers, low impedance power amplifiers have higher output current capacity, which often leads to distortion expansion for some power amplifiers with small power margins. Moreover, low impedance horns are not conducive to damping and can affect low-frequency control. In addition, in practical operation, the impedance of some speakers may decrease to less than half at certain frequencies, so an impedance of 8 can be chosen ω A speaker for. For example, the load impedance of many AV amplifiers cannot be lower than 6 OHms.

4、 Double line split tone. If the terminals are connected in parallel, the speaker cable needs to be connected to a pair of terminals in the LF unit. Otherwise, due to the parallel connection of two sets of terminals or copper sheets, the effect of low-frequency replay will be largely lost. Public address system equipment

5、 The mute ringtone adopts two identical mid to low frequency speaker units, symmetrically arranged on both sides of the high frequency unit. It can achieve good low-frequency and transient response, high sensitivity and power carrying capacity, and large dynamic nonlinear distortion. However, its comprehensive frequency characteristics in the mid frequency band often result in low valleys and narrow vertical directionality, so attention should be paid to the mid frequency band performance. However, in some dumbbell sound systems, the next unit is only used to replay low frequencies. Replaying low frequencies on the unit, also known as the 2.5 frequency, can overcome the aforementioned drawbacks.