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Guitar amp and the difference between ordinary speakers

2014/7/26 14:48:57
 

You've probably heard the following two points:

1, guitar speakers and other speakers, are for accurate reproduction of the original sound signal.

2, guitarist always makes the speaker overload to get enough volume.

Here we can say that more than two points of view is wrong, the following we will explain why.

All guitar amp can be a complete sound manufacturing process: the guitar itself, preamp (including a variety of effects, equalizers, etc.), and can overload the power amplifier, of course, the speaker is an indispensable element.

However, the sound is not manufactured and modified to speakers for the end. In fact, his process is a loop, i.e. the feedback. When playing or recording in general, in the speaker volume more than enough volume speaker disturbs the string resonance, and add notes on upcoming weakness, or through other acoustic feedback control technology equipment generates.

But this is not what we often hear feedback annoying whistling generated on the microphone. For the guitar is concerned, when there is sufficient gain, it will produce natural overtones after playing accent. About the use of feedback is also a corresponding guitar skills, in this regard, I also want to find a teacher to ask. In using the feedback you need a higher gain, but that does not mean too much of the volume increase. Therefore guitar amp preamplifier / power amplifier circuit design tends to make a greater gain overload, this benefit is to make the strings between play and hit / hook / point average of the volume of the strings, and more easy to produce overtones and so on.

For those who are not musicians, guitarist might be surprised to make the speaker overload, because they think it will produce distortion, so sound quality is bad. But in fact, the past 30 years, people struggled to satisfactory to manufacture a variety of overload distortion sounds, making has become a technology. Now recognized musical distortion sounds better the more common, many guitarists still kept looking for that "clean" distortion sounds.

Although there are many devices in this class force imitate sounds (effects, digital modules, power attenuators, etc.), produced in a small volume under overdrive, but to no avail. Today vacuum tube power amplifier sound is still the object of desire of many guitarists.

Why do you want to try to open a large speaker volume reason?

Guitar Amplifier

Of course, if you just want to try a guitarist playing loud, so he could buy a transistor amplifier speakers. For now the prices to buy a 30W tube speaker with money can buy a transistor 1600W speaker! And more durable. But we want is the tone! Not just volume. In the case where the maximum power the speaker, it is impossible to transfer a small volume. This is for those who do not want to disturb others, want to make the speakers emit sound beautiful, it is depressing news. To describe the image of this distortion tone is more difficult, he bit like a harmonica, saxophone or violin sound, but because it is completely unique to the electric guitar.

Another impact of the guitar itself overdrive. Single pickups produce a bright, strong tone, dual pickups produce a full, soft tone. Similarly, with the general guitar amp speaker HIFI speaker also very different. Speaker Speaker for the modification of certain sounds, but only accurate to restore HIFI speaker sound.

HIFI accurate speaker design is the reduction in the linear range of the sound, so the outside of this range, the speaker may be damaged or even burn cone coil. Linear portion of the horn keep the instrument towards the maximum power, and limit the operation of the cone, so that the audio compression, the nonlinear section. In addition to musical speaker design, at maximum power, while still achieving the outbreak of the notes will not damage the speakers. So musical speakers generally have wide and short coil, and a smooth cone movement restrictions on the extreme conditions at the time. Finally, the frequency response of speakers and musical performance HIFI speakers are different.