Only by understanding the requirements and limitations of each part can we design drives that make our system unique. Unlike most PA and Mi companies, we have a long history of designing and manufacturing our own drivers and work closely with component vendors to get the best out of their processes and our designs. A summary of the parts that make up the loudspeaker, as well as some key design issues, are shown here.
How is sound produced from speakers?
Sound is a phrase that usually refers to the frequency (20hz-20000hz) that the human ear can hear. Sound is produced by fluctuations in air pressure caused by the motion and / or vibration of a given object. When an object moves or vibrates, it transfers kinetic energy to the surrounding air particles. The most common analogy is to imagine waves in water. The word we use to describe the length of a single wave. The frequency is affected by the vibration speed of the object. A slower vibration is equal to a lower frequency sound. Faster vibrations produce higher frequencies of sound.
The function of the speaker is quite simple. Loudspeakers convert electrical signals into sound energy: sound. By moving back and forth, the loudspeaker increases or decreases the air pressure in front of it, thus generating sound waves.
As you can see, there are not many parts of speaker. However, small changes in each component can have a dramatic impact on the speaker’s performance. Basic elements: cone, suspension, magnet, voice coil and frame.
Behind the speakers. Not just an expensive and heavy metal block, the design of this component may affect the efficiency and stability of the magnet assembly more than any other component. It also has a significant effect on distortion mechanism and coil temperature, which in turn affects thermal compression and power processing. Therefore, the manufacturing and using process of steel structure is affected. Using experience and finite element analysis techniques, we can optimize the flux of the magnetic circuit, avoid the saturation point, and obtain the best performance from the motor structure.
This (together with yoke and magnet) completes the magnetic circuit. Too thin, it will saturate, lose efficiency and cause distortion. If it is too thick, the field will be too diffuse and lose sensitivity and dynamics. The inner and outer diameters are also critical, and anything below the optimum affects magnetic efficiency and stability, speaker sensitivity and power handling. The larger the voice coil gap, the easier the production and quality control. However, due to the low magnetic field strength and poor heat dissipation, the performance is not good. However, if the gap is too small, loudspeakers will look great in marketing specifications, but will not last long in actual use.
The driving force of the loudspeaker, but the magnet is available in a variety of sizes and sizes. The weight of a magnet alone (the most frequently cited feature) makes little sense. We evaluate dimensions and material specifications to provide the most efficient motor construction. In this case, “more” is not always better; we need a speaker to perfectly match the size and type of cabinet we are designing, and each component is tailored for the application. Each type of magnetic material has different design requirements, and ignoring this can lead to inefficiency, wasteful assembly, or inconvenient demagnetization (or both!)
These are usually selected according to style and price. We choose the chassis based on more acoustic standards. An inappropriate chassis will vibrate and bend in use, lose clarity and absorb energy, which should help your voice. The shape of the chassis also creates its own sound field, like a cabinet or room. The wrong chassis will impose some aspects of the field on the speaker's own response, causing distortion and losing clarity to your voice.
Suspension is usually considered to be a very small component, it only serves to keep the voice coil in its proper position. Although this is its main purpose, suspension is a very important part of loudspeaker low frequency response and mechanical power handling. Similarly, it's easy to make a good marketing standard suspension, but if it adds distortion, completely changes its behavior after a few hours of use, and fails in a few hours, then nothing good. The size, shape and material of suspension are the key design factors to be balanced in design.
A coil is not just a wire wound around a coil. If you cut a coil and study it under a microscope (as we did), you will find that the consistency of the winding tension, the application of enamel and adhesive, and the composition of the wire can have a very important impact on the performance of the coil. You can use the same specifications and wires, but the resulting coils are 50% different in efficiency and rating, depending on how you wind them and the choice of enamel and adhesive. We know how to wind coils, so we can work closely with suppliers, whether round or flat (ribbon) coils, to ensure our consistency and performance that most companies cannot achieve. We also studied the effects of different pretreatment materials and selected the best for any given application.
The cone is the biggest factor that determines the frequency response and the overall sound of the loudspeaker. It also bears the largest mechanical demand and therefore has a significant impact on the rated power. The main body of the cone can be made of almost unlimited materials and mixtures of various materials, both artificial and natural, and then treated with various concentrations of resin and paint. In order to obtain the best acoustic performance, the stiffness, weight, damping and resilience of these materials need to be carefully considered. In addition, the shape or profile of the cone is also important. For example, a driver designed for a 2-way system will have a tapered profile that is different from that of a subwoofer.
Although, as the name suggests, this prevents dust and dust from entering the voice coil, it becomes part of the voice coil and has a direct impact on frequency response and cone behavior. By supporting the cone, failure modes can be encouraged or prevented, which can lead to cone tearing if the wrong size or specification is used.