The speaker's material will have an effect on the sound.

The speaker basically by the drive unit (trumpet), crossovers and sound box design, this three part is important, the materials used are also closely related to the quality, if the change the rest part of the materials remain unchanged, the sound will have difference, this difference may be very obvious, some love yourself fancier trial of different materials to replace the original materials, such as crossovers in "tonic" or have a fever with capacitance to replace the existing wiring line, some can make quality improvement, some also destroyed the original sound balance. Part of the sound is a subtle thing, do you think the replacement of the tonic parts will improve the sound, sometimes on the contrary, the original several parts with sound or balance but better, this may have been carefully designed with the ideal test reach parts. Fancier can do experiments by themselves, but such agents will lose the warranty, you put the original parts arbitrarily changed, a problem of your own head.

The driving unit commonly known as speakers, there are a few points in the construction materials deserve special attention, diaphragm type electric horn (and woofer diaphragm or cone) of several materials, paper diaphragm has a long history, its light and with appropriate damping characteristics, and there are still many avian plant adhere to the paper, but easy to damp wet mildew or diaphragm deformation, its surface hardness is low, not high radiation acoustic velocity. But with the sound of the bass sound is full and deep, very suitable for. Now the paper membrane used in the bass and midrange horn, paper diaphragm tweeter has almost disappeared.

At about eighty in the early 1990s, plastic membrane began to appear in the alto and bass horn BBC by Bextrene at first, then the polypropylene (Polypropylene) has become common, is becoming more and more popular today, the speaker uses the material accounted for a large proportion of. Polypropylene membrane has high damping characteristics, not wet, can cast any plastic thickness and Pu shape, light and hard, physical characteristics and sound characteristics are very good, can also be polypropylene and diaphragm material mixed cast into higher hardness, such as mixing ceramic powder, glass fiber or graphite, a lot of change, to actually polypropylene diaphragm sound is better than paper diaphragm, the material manufacturers Different people, different views., ballyhoo, seems to be the only advantages and no disadvantages, but some people still think paper diaphragm sound better than that of polypropylene with "plastic" taste. In any case, this kind of material has polypropylene by manufacturers and factory welcome home, it is not limited to use in the alto and bass loudspeaker, loudspeaker diaphragm is also suitable for.

The metal diaphragm has appeared in the eighty's, but it was only in the initial stage, revealed many shortcomings, such as the sound of dry, treble laer, although the fast transient response but the tone is not natural, after years of improvement, hemisphere metal membrane treble unit first successful materials including aluminum, and Aluminum Alloy titanium and other light metal, will play to the strengths and avoid weaknesses, in recent years the metal diaphragm tweeter became popular all over the world, even by the loudspeaker is low.

As for the baritone and bass unit using metal diaphragm to reach excellent performance or in the past few years, the British AE (Acoustic Energy) first made of all metal diaphragm loudspeaker, obtaining the highest rating, but the price is expensive. Following the Monitor, Audio AE also developed the metal diaphragm speakers, will this technology to a more mature stage. The advantages of all metal diaphragm loudspeaker is the speed of sound, clean, high transparency and special industry wide yang.

Around the vibrating film has a ring of edges and moving frame, it is a flexible material for free movement of the suspension, the use of a variety of materials, including natural rubber, synthetic rubber, PVC plastic, early more manufacturers use the film, they are made of wavy or positive and negative half of the surface with a very high degree of flexibility to the edge of a large range of activities, the general ventilation type speaker is a low degree of flexibility, which is considered the main cause of the material.

Bracket

The work of the horn is to maintain the mechanical structure and stability and provide accurate activity, the support must be constructed and avoid resonance, the general horn using the supporting material has steel, aluminum alloy or magnesium alloy, steel bracket is made of high pressure, if the steel is thick, and now many large diameter of the bass trumpet still use steel bracket, but if the steel is too thin it is easy to cause resonance, steel bracket manufacturing cost is low, so in low speakers generally use.

Aluminum or magnesium alloy casting stents in robustness and better anti resonant properties, appearance is beautiful and rare, but this kind of scaffold steel manufacturing cost is high. Some speakers especially Japanese goods, although the price is not expensive, but also the use of alloy die casting, mainly in order to make the appearance more attractive, in fact, the quality of the horn. Voice coil

The speaker voice coil is low, according to the need, the tweeter is different, loudspeaker voice coil is wound by a very thin line, including copper and aluminum two aluminum, weight is lighter, can obtain better transient response, but not in terms of bearing capacity and durability of the copper wire, the tenor and the low tone horn much with copper wire around the voice coil, and copper thick can withstand high power, some bass trumpet around two to four voicecoil. Increase the bearing capacity for copper wire shape is different, for example, six round angle and rectangular cross section, the most commonly used round line, six corners and rectangular lines can be arranged tightly without gaps, can increase the cooling efficiency of a corresponding increase in power capacity.

Ordinary speakers of the voice coil more around the paper tube, but the paper is not a good thermal conductor, only has the advantages of light, in order to improve the efficiency of heat dissipation, some speakers use aluminum or Kapton voice coil tube, the voice coil is fixed on the tube due to better heat dissipation, a significant increase in carrying capacity, the recent increase in the use of such materials.

Most commonly occurs on the horn of the horn, because it is the voice coil with a thin wire, can not withstand the high power, some speakers with protection circuit, when the input current is too high to automatically cut off or reduce the current to prevent high pitched horn damage. The tenor and bass speaker voice coil is strong is not easy to burn, may cause the voice coil hit bottom or skew when input is too strong.

Magnet

Early in the use of magnesium nickel cobalt (Alinco) alloy, it has the advantages of high strength and easy to prevent leakage of magnetic field, but manufacturing costs are increasingly high, manufacturers are forced to use iron oxide magnets, also known as ceramic magnets, which also has a very high magnetic force, but the need to use large, some of the magnetic force of the magnetic field is 30 to 20 pounds, magnetic field spread, use must be carefully controlled.

There is a kind of rare earth magnet is called Samarium Cobalt, Chinese name translated it for SmCo magnets, magnetic magnet of the traditional five to six times, so just a small amount can reach sufficient strength, this magnet clam is very expensive, more suitable for the high unit, baritone and bass unit on the very rare.

Audio Converter

The audio device is composed of three parts, including inductance coil, capacitance and resistance, the coil is made of copper wire, high pass part of the line is thin, the lower part of the line is thick, the core of the audio device with air core and iron core type, depending on the design and the. Capacitor has a great impact on the quality of the sound quality, and now the high quality speakers in the use of multi - tone capacitor, it is the quality of the very FI HI fans attention.

General speaker of the voice of the device will be installed on the circuit board, neat and beautiful, but the circuit board copper track narrow relationship, may be bad for the big current mark, so some of the fever level speakers use directly with hard wire welding, get better quality.

Sound box

The loudspeaker sound box is the main materials with good damping characteristics, strong resonance, home design in order to achieve this goal, the past has used every kind of materials, including wood particleboard, fiberboard, plywood, plastic, artificial marble, concrete and even used metal. The general sound box multi-purpose wood splint or wood grain laminates, the easy cutting and manufacturing, and now many more senior speaker uses the medium density fiberboard (MDF), with the characteristics of every night. Celestion first used in their SL600 Bookshelf Speakers of aviation technology, with three sandwich structure of the aluminum made of sound boxes, such as the construction of the aircraft floor, very strong no resonance, the bookshelf speakers are very successful. The sound box structure is another innovative B&W Matrix, internal skeleton type structure with sound-absorbing latex to obtain pure tone.