【 Weak current College 】 audio equipment shock---Power By 【 China power house network 】

Audio equipment, fear of vibration, acoustics and vibration impacts, we all know the truth, for audio equipment impact vibration source drive motors, transformers, magnetic, acoustic loudspeakers. In order to avoid vibration sound playback on equipment, in addition to the equipment itself take shock, shock-absorbing measures, various shock equipment also came into being, and variety, but generally have a rigid pyramidal feet and soft shock-absorbing mats in two categories, to further eliminate vibration on audio equipment. A variety of different shapes and materials produces shock equipment through conduction, isolation and absorption audio equipment itself, the host body (ground or floor) and Sonic vibration in certain frequencies, thus eliminating vibration on sound impact.
In nature, each object has its intrinsic resonance frequencies, each material because of its density, their intrinsic resonance frequency is not the same, the vibration frequency conduction performance is different. So on shock equipment, selection of the physical characteristics of produced material is essential. The current production of shock equipment materials can be broadly divided into five types:

① high elasticity and low damping materials such as aluminum, stainless steel and ceramics etc, this material in peak shape sharp, in the vicinity of vibration transmission capacity 40Hz frequency changes have drastically changes, pass the high-frequency capability of soft materials;

② in the elasticity of damping material such as wood, vibration transmission capacity between metal and rubber;

③ low elasticity high damping materials such as rubber, etc., in the vicinity of vibration transfer 200Hz capacity with frequency and fluctuating;

④ ultra low elasticity materials, such as sponges, vibration frequency of the transmission capacity is increased and stable descent, on the frequency of the change impact is not big, but not easy to pass on high-frequency vibration;

⑤ composite materials such as stainless steel and rubber, etc., on the delivery capacity of vibration and has taken longer.

Feet, tripod and so is the use of appropriate media and geometric shapes, sound equipment casings and bearing of the contacts was reduced to a minimum, creating an acoustic high-impedance area, so that the resulting isolation effect, or will stereo system with mechanical vibration "grounding". Rigid pyramidal feet in addition to the equipment itself of vibration can also export, equipment and vibration isolation from outside, so that the audio equipment internal and external effect of vibration on the sound quality is reduced. An effective shock feet must transmit vibrations, the vibration of the mechanical energy is converted into heat emission. Different materials for production of pyramidal feet has its fixed resonance frequency, each with advantages and disadvantages, it is in use should be considered.

Shock-absorbing pads to absorb the vibration, because of different materials can be distributed foam pads, rubber mat, plastic mat, wool pads, etc., to get good shock absorption effect, choose a major disturbance due to absorption of shock-absorbing mats frequency, while at the same time to audible frequencies following SLF (10Hz) absorption, to improve the clarity of the sound. Shock-absorbing mats especially suited to sing up LP electric, laser disc player, the effect will be instant use, such as CD Player placed shock pad, the replay will significantly improve the sound quality, more compactly, bass sound like focus better, voice clarity. Different materials for production of shock-absorbing pads on the frequency of the vibration transmission and conduction rate are different, this is the key to the selection. As to the heavy stone made floor, then it is placed in a soft shock-absorbing rubber pad, you can have better results.

Pyramidal and shock-absorbing pads in combination, can be integrated both in the long, hard pyramidal enables the transmission of vibration to an effective, when the vibration transmission to the shock-absorbing mats, due to the high damping laminated materials Intermolecular collision and the vibration of mechanical energy into heat, vibration of energy will be concentrated in the vicinity of the cone, and use different materials have different resonance frequencies, there are different on different frequencies, the damping characteristics of this combination will have a more broadband uptake and damping to receive better results.

On the pyramidal feet of experience using, according to many, because every point on the material of the vibration amplitude, angle bevel is placed in the audio equipment move back and forth at the bottom of the location, the resulting effect is not the same. Usually pyramidal feet using three to triangle placed, by an experimental method for the best bit, pyramidal feet effect to laser disc players, speakers, the most obvious.

In pyramidal feet have not yet been commercialized, audio enthusiasts often use upside high foot glass Goblet or drum elephant chess piece, and so on equipment, as a shock, but also to B2B.

Audio equipment shock can often be summed up in two types with a solid wooden cabinet or metal cabinet placed equipment for racks, another is the use of feet, shock-absorbing pads or other things, the equipment and racks and racks and ground for isolation. But the sound of audio equipment is characterized by the designer, so not all kinds of equipment are suitable for all kinds of shock equipment, should, as appropriate and the shock method.

Audio equipment is to replay music service, calibration, and other accessories just makes the effect, but is not possible to change the nature, to moderation, do not put the cart before the horse.