论文部分内容阅读
随着家庭AV中心的发展,音响爱好者都希望制作一部能完美再现音源的高保真扩音机,但由于种种原因,实际制作中往往会出现一些令人头痛的噪声问题,就此谈一些笔者的体会,供大家参考。扩音机中常见的噪声有以下几种: 1.“沙沙”声:扩音机中的“沙沙”声主要来自于前级放大器。如果前级不采用性能优良的元件,其产生的噪声就会通过后级放大,让你难以忍受。所以,前级放大管一定要采用性能稳定的低频低噪声管。此外,前级耦合电容选用不当,也会成
With the development of the home AV center, audio enthusiasts all want to make a high-fidelity loudspeaker that can perfectly reproduce the audio source. However, due to various reasons, some headache noise problems often occur in actual production. In this connection, some author’s experiences ,For reference. Common noise in the megaphone are the following: 1. “rustling” sound: megaphone in the “rustle” sound mainly from the preamplifier. If the previous stage does not use high-performance components, the noise generated will be amplified through the post-class, so you can not stand it. Therefore, the preamp amplifier must use stable low frequency and low noise tube. In addition, the pre-coupling capacitor used improperly, will become