Some speakers will provide more sound than others when supplied the same power level from the amplifier. The loudness is ultimately determined by the sensitivity of the speaker, which can vary. ![]() More power doesn’t necessarily mean louder. This is the continuous power rating of the speaker. We’re more concerned with how much power a speaker can handle over an extended period of time. The power rating of your speaker can also be found in the technical specifications. Power is measured in watts and refers to the rate that energy is transferred. That’s because an amplifier’s output has to double to match a 3dB increase in speaker sensitivity. Though you may be tempted to go for the most powerful amp you can afford, you’ll usually do better by buying a more sensitive speaker. ![]() A better insight into an amp’s muscularity is to compare its power output into 8 ohms with that into 4 ohms.Īn ideal amp would double its output as impedance halves so, though most won’t achieve it, the closer it gets the better. The nominal impedance of most speakers is 4, 8, or 16 ohms. A speaker will “impede” the flow of electricity being created by the amplifier. Impedance is measured in ohms and refers to the opposition a circuit presents to electrical current. PowerĪs you’ll see, these two factors are closely interrelated. There are two basic factors to keep in mind when choosing an amp that is compatible with your speakers: 1. This will ensure the speaker has enough power while leaving yourself 3dB of headroom.ġ. If you choose the wrong amplifier for your speakers, you run the risk of causing damage to your equipment in the worst case or getting poor sound quality in the best case.Ī general rule for choosing an amplifier is to select an amp that provides 1.5-2 times the continuous power rating of your speaker. If you’re designing a sound system, you will need to ensure that you choose speakers and amplifiers that work well together. Splitting pre-amplification (input selection and volume control, fundamentally) from power amplification (go on, guess) is done in order to keep the sensitive preamp circuitry (and the delicate audio signals flowing through it) away from the electrically noisy high-current power amplifier section. The general rule in hi-fi is that splitting each stage of the music reproduction journey into its own single unit will give you a better overall sound. This means everything has been tuned together, saving you the work that goes into matching separate amplifiers. This the most simple, convenient and space-saving option, packing both pre- and power amplification into one chassis. It’s ideal if you’re working to a budget or don’t have the space for two separate units. It is made up of a pre-amp and power-amp in one box. In short, the power amp takes the weak signal from the pre-amp and gives it that extra drive required for it to be heard through the speakers. The preamp may also include balance and tone controls.Īfter the audio signal is converted into an electrical signal, it has several voltage amplifications done, after which the power amplification of the amplified signal is done just before the loud speaker stage. The preamp lets you switch among your sources and control the volume. Without the pre-amp, the final signal would be noisy or distorted. The job of a pre-amp is to take a low level signal from an audio source and prepare it for the next stage of amplification. Stereo Amplifiers are responsible for amplifying the incoming audio signal in a way that will not only alter it’s quality but simply enhance it so that your speakers can play the music that is true to its source.Ĭheck out Stereo Amplifiers Types of Stereo Amplifiers: Even the smallest loudspeakers have an amplification module somewhere in their structure, only it’s usually integrated so well that it can’t be seen. Stereo Amplifier is basically a power amplifier whose main function is to enhance low power audio to highly enlarged audios which have enough power to be accepted by a loudspeaker or any stereo speaker.Įvery stereo system requires an amplifier, it is what breathes life into the loudspeaker. In most cases it will also come with a remote control so you don’t have to get up from your chair. It may even allow you to adjust the sound through bass and treble controls or a loudness contour. It amplifies that signal and feeds it to your speakers or possibly your headphones. It lets you choose which source to listen to. It accepts inputs from a range of sources – computers, CD players, Blu-ray players, turntables, tuners, smart phones, tablets and DACs. The integrated amplifier is the heart of your stereo or home theatre system and also its control center. TRC Recommends: Best Entry-Level Audiophile Turntable in India Guide to: Buying Your First Turntable in India Can't find the record you need? We'll get it for you!
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