奥星智能影音为您免费提供济南中央空调济南音响公司济南智能家居哪家好等相关信息发布和相关资讯,敬请关注!
新闻详情 您现在的位置:首页 > 行业资讯 > 详细内容

音响器材在连接时的基本要求

来源:http://www.axznjj.com/news/19.html发布时间:2017-02-14

(1)信号电平的匹配:在连接音响器材时一定要注意各器材之间的输入、输出信号电平的差异。如果前级器材输入信号的电平过大,会产生非线性失真,反之则会降落氏重放系统的信噪比,甚至无法推动下一级器材的放大器,因此在配接时要注意器材之间的电平不应相差过大。
(1) the signal level matching: in the connection of sound equipment must pay attention to the input and output signal level differences between the equipment. If the input signal level before the equipment is too large, will produce nonlinear distortion, otherwise it will fall's replay the signal-to-noise ratio of the system, not even to push the next level of equipment connected with the amplifier, therefore should pay attention to the level of equipment should not differ significantly between.

如果在实际使用中出现信号电平不适配时,必须通过衰减电路使输入的信号电平降低,或通过放大电路使输入信号的电平提升。对于一般的动圈式话筒输出电压为几毫伏,因此需要设有一级放大电路将信号放大后送至前置放大电路。对于录音座、CD唱机及LD机,由于其输出信号的电平达0.755~1V以上,因此可以直接送入前置放大器。

济南音响

If the signal level is not used in the practical application, it is necessary to reduce the input signal level through the attenuation circuit, or to increase the level of the input signal through the amplifier circuit. For the moving coil type microphone output voltage for a few millivolts, therefore need to be equipped with a primary amplifying circuit amplifies a signal sent to the preamplifier circuit. For recording the seat, CD player and LD machine, because of its output signal level is above 0.755~1V, so it can be directly sent to the preamplifier.
(2)阻抗的匹配:在Hi-Fi音响器材中,比如晶体管功率放大器的输出阻抗为低阻抗,而电子管功率放大器等器材的输出阻抗为高阻抗。如果它们与扬声器连接时阻抗不匹配,会使放大器的输出功率分配不均,或因阻尼过大使扬声器的瞬态特性变差。
(2) impedance matching: in Hi-Fi audio equipment, such as transistor power amplifier output impedance is low impedance, and electronic tube power amplifier and other equipment output impedance is high impedance. If they do not match the impedance of the speaker, the output power of the amplifier will be unevenly distributed, or the transient characteristics of the speaker will be worse due to damping.
阻抗匹配的连接一般有平衡式和不平衡式两种。所谓平衡式是指传输信号的两芯屏蔽线对地的阻抗相等。所谓不平衡式是指两芯屏蔽线中,其中有一根接地。当平衡输出与不平衡输入相连接时,必须通过加匹配变压器进行匹配。
Generally, there are two kinds of impedance matching connections: balanced and unbalanced. The so-called balance refers to the transmission signal of the two core shielding line to the ground impedance. The so-called imbalance refers to the two core shielding line, which has a grounding. When the balance output is connected to the unbalanced input, the matching transformer must be matched.

相关标签:
相关新闻RELATED NEWS
相关产品RELATED PRODUCT
  • 无线话筒

    详情

  • 前级效果器

    详情

  • 后级功放 

    详情

Copyright© www.axznjj.com(复制链接) 奥星智能影音

济南智能家居哪家好?供应订做多少钱?济南音响哪家好怎么样?诚信公司专业以批发价格大量现货提供济南音响、济南中央空调厂家、济南智能家居厂家、济南中央空调哪家好等品质优良的产品及报价,欢迎来电生产定制!

热门城市推广: 山东 济南 大庆 青岛 海南

Powered by 筑巢 黑ICP备17000140号-1