Fever players can not ignore the choice of power amplifier and stereo matching.

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[Abstract]:

Of all the devices used in our hi-fi and home theater systems, perhaps the smallest change in the last 20 years has been the speaker. From this point of view,it should be easy to match the speaker

Of all the devices used in our hi-fi and home theater systems, perhaps the smallest change in the last 20 years has been the speaker. From this point of view, it should be easy to match the speaker with the power amplifier, right? Well... it's not a hard science, but there are some key specifications that affect their overall performance. Let's take a look at the important hints of the players in the industry.

The importance of matching amplifier and loudspeaker

A good rule of thumb when you match the power amplifier with the loudspeaker settings is to choose an amplifier that provides twice the loudspeaker program rating. This means that a loudspeaker with nominal impedance of 8 ohms and rated power of 350 watts will require an amplifier capable of generating 700 Watts at an 8 ohm load. For stereo speakers, the rated power of the amplifier should be 700 watts to 8 ohms per channel. If there is a quality professional loudspeaker, it can handle the transient peak value higher than its rated power.

Fever players can not ignore the choice of power amplifier and stereo matching.

Using an amplifier with extra "margin" will help ensure that only clean, undistorted power can enter the speaker. The margin is the difference between the normal level of the amplifier and the maximum level that the amplifier can pass without distortion. The music is very different in dynamic range; there is not enough clearance and you will find that your gears clamp (twist) too often! Some professional amplifiers are designed to give them additional allowance. These amplifiers can reproduce the transient peak value exceeding the rated power cleanly. In this case, please select the type of output power equal to the program's rated power of the loudspeaker. For details, please refer to the amplifier manufacturer or user manual.

Fever players can not ignore the choice of power amplifier and stereo matching.

In some applications, such as important listening in studio environments, it is important to maintain peak transient capability. For these applications, amplifiers that provide two to four times the power rating of the loudspeaker program are used.

If budget constraints or traditional devices force you to use smaller amplifiers, special attention should be paid to the fact that amplifiers are not clipped. You may be surprised to find that low power can cause damage to speakers or systems.

Ensure that amplifiers and speakers match important indicators.

Impedance: Ohm (Ohm) is the measure of resistance. Audio amplifiers are usually designed for resistors of 4, 8, or 16 ohms. The best system performance can be achieved if the total ohmic load of the speaker is correct for the amplifier. If the total speaker impedance is too high, the power delivered to the loudspeaker will be reduced. If the total speaker impedance is too low, the power transmitted to the speaker will be higher, which will overload the speaker and damage the amplifier. You can connect any number of speakers to an amplifier as long as they are properly wired and do not collectively lower than the specified output impedance of the amplifier.

Fever players can not ignore the choice of power amplifier and stereo matching.

For example, if you connect a 6 loudspeaker to an 8 amplifier, they put more load on the amplifier than they were designed to handle and produce less dynamic (clean, easy) sound. Then you risk the overheating and closing of the amplifier, or worse, burn out completely. This will happen only after you notice the distortion of the increase. Fortunately, most modern amplifiers and AV receivers have protective circuits, hot fuses, etc. to turn them off when overloads occur.

Multiple loudspeakers can be linked together. Whether amplifiers, mixers / amplifiers or loudspeakers, double speakers are connected in parallel. The following general rules will help you match the impedance of a PA loudspeaker with a power amplifier to optimize performance (avoid overload and other problems). Don't worry. It's easy to use and memorize.

Parallel: In order to make life as simple as possible, most people put the same impedance shell in a parallel circuit. If you do this, you simply divide the impedance by the number of speakers.

The ohmic rating of the horn is divided by the number of speakers. If you have four speakers rated at 16 ohms, you need 16/4 to get a 4 ohm overall rating. (similarly, two parallel 8 ohm speakers = 8/2 = 4 ohms).

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