Views: 0 Author: Site Editor Publish Time: 2022-02-05 Origin: Site
The difference between active speaker and passive speakers
If the general speaker system is classified according to the design system, it can be divided into two categories: active speakers and passive speakers. Active speakers are equipped with a sound amplification circuit in the speaker box, but such a design will cause the speakers on both sides. The volume ratio is different, and because of space constraints, it is impossible to install an overly complex sound processing circuit that even affects the expression of the sound. However, active speakers are more convenient, they only need standard sound signals, and they can emit enough volume. Passive speakers only install a single speaker in the speaker, so the original standard sound signal must be enhanced by other power amplifiers to stimulate the speaker. However, because the volume of its speakers is relatively uniform, the sound expressed is also more accurate. The defense system of these two speakers can be argued from two aspects: whether there are knobs in appearance, and whether they need power supply. Active speakers need power, which is supplied to the internal amplifier, and there are usually volume control knobs and power switches on the panel. Passive speakers do not have these switch knobs, nor are they allowed to require extra power, and there is a single signal connector behind the speaker. Most of the multimedia speakers used in computers are actively designed, while passive speakers are more commonly used in home and professional audio-visual equipment.
Written by : Davecl Audio
The Audio Equipments Manufacturer
合并式胆机还需要再加一个前级吗?很多烧友都有这样的疑问。这里有三个因素,一是音源输出的讯号是否大?很多外国CD机输出讯号偏小,加台前级可以放大讯号。二是音箱的灵敏度,灵敏度在90dB以下的音箱,加台前级,声音的表现会更好。三是胆机的放大量,增益30dB的标准合并式胆机,对输入讯号的放大量约15倍左右。而增益为20dB的合并式胆机,放大量约10倍,略显不足,动态会有欠缺。如果你对声音有很高的要求,最好再添一台前级做配套,将合并功放作为后级用。前级可以增10倍放大量,两台机加起来增益可达40dB。这时候,后级会推得更轻松、声音密度高、细节丰富、瞬态更强,音响系统的表现就非常完美了。
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