Many times, speaker technology is a major limiting factor in the design and performance of sound reinforcement systems. The sensor must follow all the rules of thermodynamics, so there will always be some problems, not only the inefficient conversion of electrical energy into acoustic energy, but also significant distortion during the conversion process.
A few years ago, a foreign scholar who studied vibration dampers in Washington, DC found that the dynamic speaker drive technology used today is basically the same as the 100-year dynamic drive technology. That is to say, since the birth of the speaker for so long, people have been unable to find a better way to develop revolutionary products, but in a state of continuous refinement on the basis of predecessors.
In fact, speaker technology has changed radically over the past two decades.
Improvement of internal devices
The first significant change was the design of the cabinet. When the designer masters the acoustic properties, the speaker design can take advantage of various advantages and weaken the weaknesses of various drivers. As the dividers are processed, they become more and more complicated.
Then a major change is the active design. In the late 1970s and early 1980s, Meyer Sound and other pioneers built a complete system between amplifiers, dividers, cabinets and drives, which was the first real improvement.
Third, the line array revolution. The outstanding research and development of the online array of enterprises represented by L-ACOUSTICS has further changed the performance of the speakers . Of course, line arrays are not suitable for all applications. Since the birth of the line array, it has reduced the load for countless mobile shows while providing high quality sound.
Fourth, in the late 1990s, the effect of the stage microphone changed. The first is the introduction of the in-ear monitoring system, which greatly reduces the stage volume level, improves the signal-to-noise ratio, and accommodates the deployment of microphones and even condensers during the live broadcast phase. Secondly, improving the speaker design means that a good microphone is no longer limited to the studio, and the audience can hear clearer sounds on the stage.
The birth of DSP
Digital signal processing technology is one of the key technologies to be used in next-generation loudspeakers . In the mid-1990s, EAW's Dave Gunness designed the KF900 speaker system, the first attempt to control a large speaker system through a DSP. The most representative product is Martin's MLA line array. Each driver is matched with a dedicated signal processing line. The MLA line array is not only very loud, it also provides amazing coverage control. The DSP effect of EAW's Anya speaker system is equally amazing.
These are the most modern speaker systems available, with less distortion and better control modes than ever before. In other words, it is "the sound of a big studio monitor."
Iconic sound processing
For decades, there has been a correlation between the mix of audio companies and the operation of the speaker system. There are many reasons for this. The most important point is that you are not familiar with the way the speakers produce sound. The audience can not only receive the sound of each frequency band, but also receive the iconic sound of the mixer and the part of the sound that the speaker cannot divide.
The solution to the specific phenomenon of the speaker reflects the designer's preference. Some people emphasize the "middle segment coverage", some people praise the "linear phase", and some people consider the efficiency problem. So, this is one of the reasons why we chose this product. Now, due to some new design concepts, the iconic sound is no longer a key factor in the choice of speakers , people also need to consider power, weight, rigging and so on. The sound of the latest models is neutral, so that the iconic sound is no longer a major factor in weighing the speakers .
We can expect that the development of speaker technology will become better, with lower distortion and more coverage control, which may be smaller, lighter and more efficient.
Control impedance PCB
Many customers asked us what information we need for impedence control PCB.Here,there are two types for PCB manufacturer,a is single impedance ,just one trace ,two holes .and b is differential impedance,it always go with 1 pair (two trace with same width and space). For single impedance,you just tell us the trace width one which layer and what value you require .For differential impedance,trace width/space,layers and value. Our experience engineers will calculate following your instruction with Polar software.We may change trace width/space or stackup ,but please do not worry, if any changes,we will send you to approve before proceeding. Generally,the tolerance is 10%,and more accurate is 8% .All impedance boards ,we will test here and report.
Impedance Control Board,Impedance Controlled PCB,Gold Fingers PCB,Impedance Control PCB
Storm Circuit Technology Ltd , https://www.stormpcb.com