![]() The frequency ranges also interact less with each other.īritish engineers are usually credited with a fitting solution: namely, that even when using passive loudspeakers, a (small) part of the signal reproduction can be improved. In addition, a very fine adjustment to the respective loudspeaker driver can be made, differences in running time can be equalized via DSP, or even sonic problems of the room can be addressed, etc. An electronic crossover or a digital signal processor sits BEFORE the power amplifiers, and these give energy to the individual drivers. There, on the other hand, the individual frequency ranges are driven by amplifier stages that are usually integrated into the housing. You probably already know how this looks in an active loudspeaker. This pumps violently against the amplifier via the so-called "back EMF" and thus influences, even impairs, the mid-high section. The large woofer, for example, is equipped with a powerful voice coil. This is inevitably accompanied by losses: both power and damping factor (control) are lost, and in addition, some interactions between the signals may happen. Dividing the frequency ranges takes place only via passive components – the crossover – in the speaker itself. In the "usual case" already outlined above, the amplifier drives the passive speakers from the outside. Starting with the basics: there is a rough distinction between the widespread "passive" and the much rarer "active" operation of loudspeakers, i.e. Besides, it also (usually) sounds better. Starting at a certain degree of complexity and difficulty of the task, however, teamwork makes sense – in the realm of driving the speaker, namely. If you operate a very small system, this is probably just as unimportant as a 1000 Euro power cable might be. ![]() The operation of multiple amplifiers, also called bi-amping, now comes into play: it helps to increase the sovereignty of the task compared to the "usual" performance, by distributing parts of said task to various places. Usually, every hi-fi system with passive loudspeakers is driven by an amplifier with the necessary power. But if the same person has to carry a piano up to the third floor of a building – well, a second person will certainly be needed, no matter how strong any of them might be. To comfortably do that is usually no problem. Imagine a person who wants to transport a small piece of furniture, let's say a chair. In order to explain why it can sometimes make sense to divide the amplification work among several devices – when higher and highest demands are made of the sound –, we'll have to elaborate a bit. ![]()
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