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JBL音响配套系统中功放与音箱的设置
更新时间:2022-05-16
文章来源:https://www.wenguangzhineng.com/
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JBL音响的各个组件的分析能力大多数人都未必具备,但对于音箱和功放,动手的机会则不少。那么JBL音响配套系统中功放与音箱的设置相关内容有什么呢?
Most people may not have the ability to analyze various components of JBL sound, but there are many opportunities for speakers and power amplifiers. So what is the content related to the setting of power amplifier and speaker in JBL sound supporting system?
功率匹配:一般来说JBL音响功放的功率要大于音箱的功率。一般情况下,功放的功率比音箱的功率大30%以上。如果用小功率的功放推大功率的喇叭,功放容易过载,会产生对喇叭有害的电流,此时喇叭单元很容易损坏。
Power matching: Generally speaking, the power of JBL audio power amplifier is greater than that of speaker. In general, the power of the power amplifier is more than 30% higher than that of the speaker. If a small power amplifier is used to push a high-power horn, the amplifier is easy to overload and produce a current harmful to the horn. At this time, the horn unit is easy to be damaged.
阻抗匹配:目前专业音响系统中使用的功放一般都是定阻的。一般功放大多工作在4Ω--8Ω。有些音响工程师喜欢用一个功放推2个以上的喇叭。这时,要注意扬声器。如果阻抗低于2Ω,很容易损坏功放。这种短路工作方式好不要使用。
Impedance matching: at present, the power amplifiers used in professional sound systems are generally constant resistance. Most general power amplifiers work at 4 Ω - 8 Ω. Some sound engineers like to push more than two speakers with one amplifier. At this time, pay attention to the speaker. If the impedance is lower than 2 Ω, it is easy to damage the power amplifier. This short-circuit working mode should not be used.
JBL音响功放后面有时会有很多开关,如:单声道工作模式、立体声工作模式、桥接工作模式;还有电平调节开关、信号频率切换开关等,我们在使用的时候一定要注意看这些开关,把功放调节到正确或理想的工作状态,否则可能会造成不可预知的故障。
There are sometimes many switches behind JBL audio power amplifier, such as mono working mode, stereo working mode and bridge working mode; There are also level adjustment switches and signal frequency switching switches. We must pay attention to these switches when using them and adjust the power amplifier to the correct or ideal working state, otherwise unpredictable faults may be caused.
JBL音响
功放与音箱的线路连接:功放的信号线尽量使用平衡线。如果系统中有多个功放,好使用信号放大分配器,将足够多的信号线不衰减地分开,为每条信号线供电。单独使用一个功放,可以降低系统噪声,减少隐患,提高信噪比。同时,还需要注意音箱线的质量和连接。尝试使用更粗更短的扬声器电缆。连接时一定要分清正负极,避免短路,尤其是专业的四芯或四芯以上的喇叭插头。端子非常小,因此接线时要小心。
The line connection between the power amplifier and the speaker: the signal line of the power amplifier shall use the balance line as much as possible. If there are multiple power amplifiers in the system, it is better to use the signal amplification distributor to separate enough signal lines without attenuation and supply power to each signal line. Using a power amplifier alone can reduce system noise, reduce hidden dangers and improve signal-to-noise ratio. At the same time, pay attention to the quality and connection of speaker cable. Try using a thicker and shorter speaker cable. When connecting, be sure to distinguish the positive and negative poles to avoid short circuit, especially for professional four core or more horn plugs. The terminal is very small, so be careful when wiring.
从技术方面考虑,功放与音箱配接有下面几点要注意:功率匹配、功率储备量匹配、阻抗匹配、阻尼系数的匹配等问题。一方面,要考虑听音室内安置几路音箱系统,简单的功放仅有1-2路功率输出,配置简单的双声道立体声系统即可;比较复杂的功放要配置4-6路功率输出。而功放的大输出功率与音箱的大承受功率必须配好,以防不慎烧毁音箱。
In terms of technology, the following points should be paid attention to in the matching of power amplifier and speaker: power matching, power reserve matching, impedance matching, damping coefficient matching and so on. On the one hand, several speaker systems should be installed in the listening room. A simple power amplifier has only 1-2 power outputs, and a simple dual channel stereo system can be configured; Complex power amplifiers should be configured with 4-6 power outputs. The high output power of the power amplifier and the high bearing power of the speaker must be well matched to prevent the speaker from being accidentally burned.
功放与音箱的功率配置与目标响度也有一定的关系。在一定目标响度下,应该让音乐信号的动态在每件器材上都能得到充分的保证,如果功放功率太大,其增益设置很小时,响度已达到要求,但这时功放的增益就限制了信号的动态范围。所以,功放功率不能太大;否则,既浪费开支,又会带来响度和音乐动态无法兼顾以及音箱负荷过重的麻烦。
The power configuration of power amplifier and speaker also has a certain relationship with the target loudness. Under a certain target loudness, the dynamics of the music signal should be fully guaranteed on each equipment. If the power amplifier power is too large and its gain setting is very small, the loudness has met the requirements, but at this time, the gain of the power amplifier limits the dynamic range of the signal. Therefore, the power amplifier power should not be too large; Otherwise, it will not only waste expenses, but also bring the trouble that loudness and music dynamics cannot be balanced, and the speaker is overloaded.
JBL音响配套系统中功放与音箱的设置相关内容就讲解到这里了,如果您对音响方面设备有需求就来我们的网站www.wenguangzhineng.com吧,专业生产制作多年有实力。
That's all for the setting of power amplifier and speaker in JBL audio supporting system. If you need audio equipment, please come to our website at www.wenguangzhining.com Com bar, professional production for many years, with strength.

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