Preliminary amplifier for a subwoofer

Lovers of music or watching movies onthe big screen of a home theater, undoubtedly, are interested also in getting high-quality sound. Therefore, it is important what kind of preamplifier to choose, so that the result does not disappoint you, what characteristics to pay attention to when choosing an audio device.

When listening to music on a CD playerAn amplifier is needed because the signal is fed very weakly. The amplifier is connected to the speakers. It is capable of switching and receiving an audio signal, increasing it to the required volume.

Amplifiers are divided into three types: preliminary, integrated and power amplifiers. Integral, which combines everything in one package, is currently the most common. More expensive and qualitative is the scheme of a separate device, consisting of a power amplifier and a preamplifier. Amplifiers are tube, transistor.

It is the preliminary version that is able to give the present music enthusiast the sound that he would like to hear - more pure and qualitative, truly alive.

Choosing from the category of expensive multi-channeldigital systems, you can stop on the AV processor. And when making a choice among amplifiers, it is better to give preference to the preamplifier, which is the best investment of money. The processor is able to properly adjust the parameters and processing of surround sound. As a result, you can assemble the following audio system, including a source (for example, a turntable), a preamplifier, an amplifier and acoustics. As a source can serve as a turntable for vinyl records, a cassette deck and other options. The AV processor can be used as a preamplifier. Pre-amplifiers are more efficient in conjunction with digital audio systems, in which they form a pair with power amplifiers. This allows the owner of professional acoustics to avoid the recording of music when playing back flaws and to neutralize the frequency resonances inherent in the room.

In order for the preamplifier for the subwoofer to produce the desired sound quality, it is necessary to set its center frequency closer to one kilohertz on its equalizer, and lower the midrange to half a decibel.

To adjust the sound on the preamplifier, follow theoutput its output with a maximum, and at the input to the power amplifier with a minimum level. The sound will be better if the output impedance of the preamplifier is lower than the input impedance of the power amplifier. The tube stereo amplifiers and transistor power amplifiers are well combined. You can connect a preliminary version to the active speakers, but a good sound can be obtained only with the use of high-quality studio models.

As a rule, the preamplifier plays a roleController, which allows you to adjust the volume and timbre of the audio system, switches the sound sources and prepares the signal for the power amplifier. Unlike the latter, the preamplifier is placed in the clear.

If you choose a high-quality preliminaryamplifier, this is a technique of the "High End" class, for example, "Evolution", created by German designers. It achieves maximum neutrality by processing the input audio signal. The device has a perfect element base, a short signal path and a stabilized power supply. Pre-Silicon has a mono output to the subwoofer with satellite prefixes, it can be built-in tuner and universal phono pre-amplifier. Undoubtedly, such a device can deliver a lot of fun to real music lovers.