How to Choose an Amplifier for Speakers

Amplifier and speaker go together like a horse and a carriage. So, you can’t have one without the other if you want to listen to the music actually. But finding a compatible amplifier for speakers is a common issue for many people. So, if you’re going to buy a separate amp and speaker, it is a minefield to get confused.

Also, if you buy the wrong amplifier for the speakers, the speakers may be blown after switching it on. Here, the following guide will help you to match the amp to the speaker as they can go together well.

Understanding the speaker and amplifier matching terminology

An effective synergy between the amplifier and the speaker must be ensured to produce impressive and long-term Hi-Fi sound. So, follow the vital terminology for the best match of the devices.

Impedance Range for Perfect Resistance

Impedance is one of the essential features of the amplifier. It denotes the measure of the electrical resistance which is represented by ohms (Ω). The speaker comes with compatible resistance which is provided by the amplifier. However, most speakers can operate 4 ohms to 12 ohms. You can easily find the compatible resistance from the specifications.

However, never try to connect speakers with lower impedance (4 ohms) to the amplifier with higher impedance (8 ohms). It’ll create distortion as well as put a strain on the power supply. After all, the common scenario of the AV receiver to support speakers from 6 ohms to 8 ohms. So, you can buy a standard amplifier with at least 6 ohms for the best performance and match of the speaker and the amplifier.

Enough Power to Produce Sound

Regardless of using factory or an after-market speaker, the amplifier must provide sufficient power to the connected speaker. Usually, the amplifier should be able to provide up to 75 to 150 percent of the RMS value. Always remember that exceeding the required power is far better than providing the minimum power. Because little power can blow up or fry the sound system.

However, follow the below guideline to match the rated watts per channel of the amplifier as well as the speaker.

The 8Ω speakers rated with 100 watts can be a perfect match for the amplifier which can provide 100 watts per channel for the 8-ohm speakers. Also, you can use a 50 watts per channel amplifier for the speakers rated 100 watts. But, the sound can’t fill up the room.

On the contrary, using a 150 watts per channel amplifier to the 75 watts speakers may produce maximum volume, but it can start to struggle with the power after a long period.

How to Choose an Amplifier for SpeakersChoose an Amplifier for Speakers

Intended Purposes to accomplish

Usually, an after-market speaker and an amplifier are purchased to upgrade the sound quality as well as to power the speakers’ volume. However, if you want to improve the sound quality for home as well as car speaker, a 4-channel amplifier and an 8-channel speaker will be a great way respectively.   Regardless of using in a car or at home, the highest RMS wattage of the amplifier will provide the best value for any speaker.

Moreover, if you use any additional speaker, add a singular channel amplifier for the newly joined speaker.

Sensitivity Produces Better Sound

Sensitivity denotes the measurement of the loudness of the sound. It is expressed in decibels which measures the loudness of 1-meter distance and 1 watt of power. So, a higher sensitivity produces a louder sound than a lower sensitivity a speaker when the distance is same.

However, the higher sensitivity doesn’t mean to be the better all the time, but it means that reaches higher volumes with the same power. So, it’ll abstain you from investing in the power amplifier. But, it is crucial to identify the sensitivity of the speaker. So, have a deep look at the specifications of the speaker to know the sensitivity as well as the performance.

Perfect placement for Space Constraints

Placing the amplifier and speaker was an important issue for constraint place. But, it now offers a great variety of shapes and sizes for easy installation. You may worry about the size of the amplifier to fill the room up the sound. Because it’s commonly considered that a large amplifier is needed for a spacious room. The technology is so fast that size is a non-issue to produce a loud sound.

However, if you are sensible about the size of the speaker, you must consider the match of the speaker, the amplifier and the room. Moreover, you may mistake to use satellite speakers in the large room. The satellite speakers may be damaged to control higher power to produce higher volume. So, it’s a wise decision to choose among bookshelf, floor-standing or in-wall speakers.

The Right Number of Channels

A speaker determines how many channels are needed in an amplifier. Generally, one channel is considered for the best performance for a speaker including a subwoofer. Also, an even number of channels can work efficiently for an even number of speakers.

Compatibility with the Head Unit

The head unit of a sound system is composed of the radio, the stereo, and the multimedia player. It connects to the amplifier which is connected to the speakers. Head units without preamp outputs require the amps to have the speaker level inputs.

On the other hand, head units with preamp outputs require the amplifiers to have the line level inputs. Here, preamp outputs determine the speaker level inputs as well as the line level inputs. However, if you want to have compatible amplifiers, you have to decide whether the head unit comes with outputs or not.

Final Thoughts

After the overall discussion, matching the speaker and the amplifier may be complicated or technical jargon. But, the real scenario is a common sense of choosing the best one. However, the perfection of the match will help you listen to music for decades.

A little concerning is the blow of the speaker, and it is usually the fault of choosing the wrong match. So, choose the best match by using common sense to avoid any problem. Enjoy music and live alive.

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