Buying Guidelines For T-amp Amplifier Products

Buying Guidelines For T-amp Amplifier Products

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I will take a look at various audio amplifiers and describe some basic vocabulary to help you select the best amp for your speakers

There is a flood of different audio amplifiers available that all differ in their specifications, shape and size. This makes it hard to make a decision which model to pick. You dont have to be an expert. Just follow some plain suggestions and you ought to be satisfied with your amplifier.

A vital parameter is the size of the amp. You can purchase models which can fill half a room. In contrast, a few of the most recent miniature amp models are no larger than a deck of cards. Many amps are rack sized. This enables them to be stacked on top of your other audio equipment.

The huge majority of modern audio amps are solid state amplifiers as opposed to more traditional tube amplifiers. Tube amps have been dominant a decade or so ago. Regrettably, tube amps have quite high audio distortion which describes how much the audio signal is degraded by the amplifier.

Harmonic distortion of tube amps is frequently as large as 10%. Solid-state amps will have less audio distortion. Still, distortion will depend on the particular audio amplifier technology. In the past, mostly "Class-A" and "Class-AB" amplifiers were obtainable which are also known as "analog amplifiers". Whereas amplifiers using these technologies normally have low audio distortion, power efficiency is merely 10% to 30%. Power efficiency refers to how much of the electrical power is in fact used to amplify the signal. The left over part is wasted as heat. An amplifier with low power efficiency will radiate most of its power as heat.

Another technology is known as "Class-D". This technology provides far higher power efficiency than analog amplifiers, generally around 80 to 90%. "Class-D" amps are also named "digital amplifiers". The tradeoff is that digital amplifiers regularly have larger audio distortion than analog amplifiers. This is mostly a consequence of the switching distortion of the output power stage. Newest digital audio amplifiers, though, make use of a feedback mechanism and can minimize the audio distortion to below 0.05%.

The amplifier should be able to provide adequate output power to sufficiently drive your speakers which will depend not only on how much power your speakers can handle but also on the size of your listening area. Speaker power handling is given as peak power which describes the greatest amount of power during short bursts whereas average power refers to how much power the speakers can handle constantly.

In a small listening setting, you may not require to drive your speakers to their rated value. 20 to 40 Watts of power will most likely be sufficient. Low-impedance loudspeakers normally offer high sensitivity and are easier to drive to high volume than high-impedance speakers. Not all amplifiers can drive any speaker impedance. Find out the impedance of your speaker which is given in Ohms. Then look at your amplifier manual to guarantee that your amplifier can drive this impedance.

Two other essential parameters to look at when selecting an amplifier are signal-to-noise ratio and frequency response. Signal-to-noise ratio describes how much noise the amplifier will introduce and should be at least 100 dB for a high-quality amplifier. The frequency response indicates which audio frequency range the amplifier covers and should be no less than 20 Hz to 20 kHz.

About the Author:
Gunter Fellbaum has been designing audio and electronic products for over a decade. You can find further information concerning t-amp models as well as stereo amplifiers from Amphony's website.



Article Originally Published On: http://www.articlesnatch.com


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