source:Industry News release time:2022-07-07 Hits: Popular:Brand bar audio wholesale
Many people think that the output power of the power amplifier is too high, causing damage to the tweeter, but this is not the case. In professional places, the loudspeaker can generally accept a large signal shock of 3 times the rated power, and can instantly accept a peak shock of 5 times the rated power without any problem. Therefore, it is very rare that the tweeter is burned by the high power of the power amplifier, not due to unexpected strong impact or long-term howling of the microphone.
As we all know, there are multiple speakers in the speaker box, and the power received by the speakers is distributed differently according to the different frequency division points. The rated power of the speaker, ordinary professional speakers indicate the maximum pink noise power, that is to say, the rated power of the speaker refers to the analog signal power that pink noise or broadband can accept. For a two-way speaker with a crossover point of 1.6kHz and a rated power of 100W, at rated power, the woofer can be assigned an output power of 78W, while the tweeter can only be assigned to 22W. Therefore, it is acceptable to apply 100W of pink noise power or ordinary program signal power to the speaker; when testing with a 100W single-frequency signal, both the tweeter and the woofer may be damaged.
If a 3-way speaker, the frequency division point of the mid and treble is at 4kHz, then the power received by the tweeter is only 5% of the nominal power. If the power distribution is improper, it will easily cause damage to the tweeter.
Under normal conditions, if the signal input to the speaker is doubled, the power of the tweeter will only increase by 5W; but if the power of the power amplifier is insufficient, the signal overload will be clipped, and the weight of higher harmonics will increase sharply. The original 1kHz sine signal, when the overload clipping is close to the square wave, will generate a large number of odd harmonics outside the 1kHz sine wave, such as 3kHz, 5kHz, etc. sine wave energy, so that the proportion of high-pitched components in the signal It is greatly increased, so that the high frequency spectral energy in the signal far exceeds the power that the tweeter can accept. Even if the total signal power at this time has not reached the rated power of the speaker, the tweeter has been overloaded and damaged. This condition is short-term overloaded than the signal, but does not present an increased risk of clipping. When the signal is not distorted, the power energy of the short-term overloaded 1kHz signal falls on the woofer with higher power, which does not necessarily exceed the short-term maximum power of the speaker. Generally, the power distribution of the speaker will not be biased and the speaker unit will be damaged. Therefore, under normal operating conditions, the rated output power of the power amplifier should be 2-3 times the rated power of the speaker, so as to ensure that the power amplifier does not cause distortion at the maximum power of the speaker.
Popular recommendation
C12 Bar hall sound Merchant
2021-07-26F124 Home ktv audio Vendor
2021-07-14Resolution 1.5TT Marten Audio company
2021-07-16PSM18 POINT SOURCE MONITOR Speaker bar Factory
2021-07-16I3 Small bar sound Vendor
2021-07-26Resolution 5S skeletal Concert sound Vendor
2021-07-16F121Car stereo wholesaler
2021-07-14Bass Reflex Range Bar hall sound Vendor
2021-07-14F10 Nightclub sound Vendor
2021-07-26A1 Car stereo manufacturer
2021-07-26MB112Anhui Bar Audio Vendor
2021-07-14AX 88KTV audio sales
2021-07-17What is the difference between U-segment and V-segment of wireless microphones?The bar needs sound e
2022-06-15The main points of the use of professional audio system speakers.Audio equipment bar Processing
2022-03-12How to configure a suitable power supply for stage audio.Bar use audio Vendor
2021-12-02General audio engineering FAQ.School outdoor activity audio
2022-06-13What plan should the government and enterprise audio choose?
2022-03-15Stage performance live audio problem.Bar performance sound wholesaler
2023-03-17Four ways to reject professional entertainment audio noise!Yunnan Bar Audio Vendor
2021-11-03Why is the bass of usually larger speakers better?
2021-09-08Reasons and solutions for the imbalance of the left and right channels of professional speakers.Mart
2023-03-16Audio audio is divided.Small bar sound wholesaler
2023-03-21Equipment terminology for professional audio.Bar needs sound
2022-02-17Introduction to the principle of professional audio waterproofing
2021-09-06