Line has been very clear, ten thousand yuan of the following part level after the merger amplifier is not worth considering, especially the consolidation of new type power amplifier, after shrinking, false power, is expanded to all the merger of the amplifier.

In fact, many years ago did not cut corners, about power. Now find the river's lake has been changed, full of cheating. Many years ago a small flagship of the amplifiers, tens of thousands of yuan to after class in the pure, 60 w x 22 w * 3 + 4, use system + D2, push the seven big box quite well! . In the absence of subwoofer, both felt strongly the sofa of * *, today, by contrast, in so many sound on the BBS, talk about the most is "don't move," a lot of manufacturer is easily the nominal power of the 100-200 - w x 7, but I couldn't move, and let me have been depressed, don't understand. I why want to do, to analyze the manufacturer no longer level after power amplifier is to a large number of the use of copper and aluminum! As long as a little bit on the older people should know, copper and aluminum in just a bit more expensive than iron, it is not worth, ordinary people everywhere have bronze, today?

Many friends do not know much about amplifiers true how to achieve performance, mistakenly think that as long as power is large enough is king, also don't know after merging amplifier and pure after what's the different power amplifier. Friends keep is to "control", "analytical force" and so on, and how the power amplifier to achieve these performance is nothing.

Have a friend who had been a 2-channel pure consulting me after class, I put forward the "damping coefficient" and "conversion rate" of these two crucial but people are not familiar with the concept of again.

The most basic indicators of the power amplifier, power rating.

The power amplifier with power rating of today in the us and Europe. The old power amplifier is also highlighted in power rating method. Is generally in the tiny distortion of power (such as 0.015%, 20 - measured power under 20 KHZ, more advanced power amplifier was measured under 0.008%). If you want to have a strong output power, the power of the strong support is an absolute must! Reflects the size of the power of sound, and is the amount of feeling.

The second basic index of the power amplifier: all kinds of distortion.

The above has shown that, this is the size of the power to have a direct relationship. When power amplifier power is large enough, and only use a small power, distortion degree of this time will be much smaller.

Level after the merger amplifier is often just use a pair of power tube, power tube of matching has much effect on the degree of distortion, high power amplifier is directly to the device of the production line matching (old power amplifier distortion is very small, for example, the ten thousand yuan to the equivalent of today's one hundred thousand yuan), the cost is very high, now tens of thousands of yuan within the power amplifier is not like this. In today's poor power tube matching, must under the high power with the power to reduce the distortion degree of the small. Distortion degree reflects the sound quality, also is the simple sense.

High power amplifier to some important indicators: damping coefficient.

A senior amplifiers, in addition to the power and the distortion degree, the quality of its internal resistance on the bass output back control has a lot to do. To ensure that in large current environment has a very small output impedance, first must have a high quality high power transformer, high current rectifier circuit and powerful capacitor filter circuit. These things the merger of the more advanced type power amplifier because never have limited by space and cost. And pure level after power amplifier in this respect is several times the combined type amplifier. Secondly, in order to achieve a powerful power output and tiny transistor output impedance, pure level after the power amplifier is adopted the number of power tube to parallel operation, the control also want to several times stronger than the combined type power amplifier, and combined type power amplifier in a pair of output power tube (see so little of power tube radiator can hold on?) .

Of course, horn line thickness, copper content and the quality of the terminal, also has a direct influence on the damping coefficient. Damping coefficient reflects the control the quality of the bass power amplifier, which is control.