Why the treble speaker burned easily ?
when we use a microphone, if the microphone speaker distance too close or is in front of the horn, and volume of power amplifier drove is relatively large, it is easy to produce high-frequency acoustic feedback cause howling, resulting in loudspeakers burn.Since the middle and high frequency of the frequency divider most of the signal is emitted from the high - energy unit, the high energy signal all through the coil is very small, the high - frequency, generating a large current,the moment caused by high temperature, the voice coil wire burned, tweeter in a "toot" the scream broke down. The correct approach is when using the microphone do not close and is in front of the speaker unit, volume amplification to ascending slowly add, don't sigh the largest open.
Volume is too large, of course, would damage to the horn, but is more likely to is power amplifier power lack hard loudly, the output of this amplifier is not normal sine wave, but the other clutter component of the signal with, which burn horn.
If you would like the large volume,then must choose the high power amplifier, 30W following small power amplifier in too large volume is easy to burn low impedance loudspeakers.
If there is a DC output of the power amplifier, it will burn the bass horn, and even a very small number of high pitched speakers will burn. Because there is no Capacitor DC isolation bass (or other) speakers sound circuit, a DC output as the DC electric flux into the horn, even into the pickup coil with charred. So choose the amplifier must pay attention to first with a multimeter currents were measured before and after the level of output is DC output, if before the class with DC output may also after class is amplified and output to DC incoming speaker.
Output transformer electronic tube after class will not have the DC output of, but to pay special attention to the electron tube machine are more likely to have high frequency oscillation or interference. This appeared and immediately burned your senior speakers.
Dongchuang Audio
Contact:Kerry Luo
E-mail: dongchuangyp001@126.com
Skype:dongchuangyp001
没有评论:
发表评论