In 1906 appeared the first electronic device that is able to enhance the sound, which he called the Audion was invented by Lee De Forest company , who was an electrical engineer. Audion was triodą , which means that it consisted of three electrodes, placed inside a partially opróżnionej the working surface of the envelope or tube. The invention Audionu ushered in the era of electronics and allowed things such as amplification, radio, and far-reaching calls.
Audiona tube contains a small amount of gas, as De forest believed that this is due to the properties of the amplification. As it turned out, not only gas wasn’t needed, so really has hindered the ability of the device, limiting the dynamic range and giving the sound the characteristic is nonlinear , which leads to the fact that the enhancement is erroneous. Despite the shortcomings of the Audion was used to create the first successful electronic oscillators and amplifiers radios. Based on triodach continuous radio waves also allowed the transmission of sound amplitude modulation, commonly known as AM radio.
In 1913, Another inventor Harold Arnold, who acquired the rights to De Forest”s Audio, he worked on the development of amplifiers triodowych with a higher vacuum. This device was known as the Pliotron. Ultimately, all these partial vacuum boosters were replaced with completely purified from dust amplifiers lampowe. Without the invention of Audiona and triody most devices of mass communication such as television, radio and sound system, would never have been possible.
As technology became more cheaper and more practical in the 70 – ies, transistor amplifiers began to replace older-model vacuum tubes, but many years after their introduction was not able to match the sound quality of the previous one. This made music lovers to the conclusion that amplifiers lampowe inherently better. Over time, electrical engineers learned to understand better the causes of distortion in transistor amplifiers and, ultimately, to improve them. Currently much better than tube amps.
Vs mono. Stereo: what’s the difference?
Mono and stereo are a source of great confusion for the average consumer. Some people think mono sounds better, while others believe that stereo. Many receivers and units of the major can be currently electronic switch between stereo and mono, but not in the case of amplifiers. If you ever listen to music at home or in the car and przełączałeś from stereo to mono may not hear any difference. The difference is visible only when music or video was created on the same channel or were recorded głośniejszymi settings on one channel than in the second.
Consider the surround sound while watching a movie. When you are watching a movie with surround sound and it sounds like the noise moved from one side of the room to another using the record and playback stereo sound. If you listened to this system in mono, will not create a motion effect. The rest of the time while watching a movie no matter if you listened to the mono system or stereo system because the sound was recorded and reproduced on both sides at the same level.
A stereo amp has two independent channels, left and right. These two signals were similar, but not identical . Sound or voice you can only get one channel, so you can get a sense of depth to the music and sound effects. Can also be made a little higher on one channel than the other, to make a sound that seems beyond the centre. If the sound on the left channel will be made slightly higher than the sound on the right channel, it sounds like you’re a little on the left side.
In the system mono all audio signals are mixed together and then transmitted through the audio channel. This means that even if the system uses multiple mono speakers, there is no difference between them there is no sound because the signal coming from each will be exactly the same.
Understanding the specifications of the amplifier
There are several important terms you need to understand when considering which amplifier to buy. Output power is measured in watts, explains how loud the amplifier. The more speakers, the more watts will need your amplifier.
OIG is often ignored by consumers, but actually cause a big difference in sound quality. Reports on the impact that amp will have on the sound. The higher the total harmonic distortion, or THD, the more distorted sound comes from the original recording. Ideally, you should look for an amplifier that has a low THD rating.
Many amplifiers also places the signal to noise or SNR. It tells you how much background noise the amplifier generates. If the volume is set very loud you can not notice the background noise of the amplifier, but at a lower volume, electronic noise can be quite noticeable. It is best to find an amplifier with a higher signal / noise. The higher the signal to noise ratio, the less noticeable will be the electronic sound.