Tag Archives: outdoorspeaker

Power sound system is the most important parameters, that sound system with a load capacity. This is why we should pay attention

to when buying the first place. But if all manufacturers are using their different performance measurement baseline to identify the

product, the lack of sufficient knowledge is often difficult to make an objective comparison. amplifier is also true, in view of the

identification power amplifier should be aware of the following three points:
First, the battery voltage
Car battery voltage is constantly changing, for the two common logo: 14.4V/100W, 12V/100W amplifier power is two completely

different shows. As the car in motion the process is basically the voltage at 12V or so, so the 12V voltage state of the measured

power value closer to the truth. Voltage of 12V and continuous basis in order to identify the power amplifier reaches more than 12V

can be achieved when more power.
Second, the harmonic distortion THD
In comparing continuous output power amplifier is required in the same (or relatively close) THD value under. The value of THD under

different test out the sound difference is very obvious, sometimes the identity of the maximum power is high, but most likely it s

distortion and noise is also high. Therefore, check the maximum power of identity should also be aware of their value of THD.

Third, the frequency range
Amplifier continuous power output should be in the actual frequency range used for testing. For the power amplifier should be

required to identify the full scope of testing only identifies a frequency power value has no meaning.

Benchmark in determining the same, since we can compare the power of the amplifier. Typically, when the sound system in the

general purchasing power output to follow the principles. The greater the output power amplifier, that they drive the speaker s ability

is stronger. Speaker amplifier power should be larger than indicated power, small power if used in long-term use of high power output,

easy to burn, can lead to poor sound quality, distortion and failure to appear.

open
Rainy weather, slippery roads, so traffic from outside to inside are obviously dirty. As relates to “face” issue, therefore, the vehicle

owners have thought to look for good care. But in the eyes of industry experts, this special period, but some aspects of care should

not be rushed, otherwise, not only futile, anti-car may be harmful.

[Suspension of the project]

During this wet period, care of vehicle maintenance, some parts should not be rushed, otherwise not only futile, but also directly

affect the construction effect.

Up painting: impact effect

Car during a small touch but suffered heart failure to make timely repair, paint the exposed metal surface phenomenon occurs, it

should spare the time to finish cleaning, otherwise it will increase, “trauma” at the extent of injury. However, pay special attention to

finish cleaning is necessary, but make up paint work, they should try to avoid selection in wet periods. Local car maintenance expert

Chen Jinming, in accordance with strict up painting process, is required before painting plaster, dry grinding, wet grinding, drying

infrared light, and finally painting, in wet weather, the best in the paint room for painting, which need to use two paint room for

construction, to ensure the individual details of which have done quite perfect. Most repair shops currently on the market generally

has a paint room, usually dry weather problem is not quite big, but this procedure in the humid days of the hardware is missing, it will

affect up painting effect.

If the minor body scratches the collision situation, you can use up painting his first wound in the finish position for paint, can maintain

beautiful, you can also suspend the “wound” rust, dry until the weather cleared, and then make a formal lacquer.

Waxing: not easy to produce glossy

Wet weather, waxing, the effect will be greatly reduced. Because the surface water body at this time too, if you use a hard wax, it

would be painted with paint adhesion to go after the poor, if you choose water, wax, although bonding with paint, but it is not easy

when you have gloss polished, only very on the vehicle surface with a cloth wipe it again.

Chassis Armor: unfavorable bonding

Many car owners, the mind has a “rust chassis” concept. More closely tied to chassis ground, are particularly vulnerable to corrosion, so

do the cleaning and chassis rust treatment is very important. General procedure is to first clean, then anti-rust treatment, the whole

process takes lasted two hours. Do a chassis rust treatment, rust effect can basically be maintained for many years.

Note, however, if wet, “back to the south” to do the chassis armor, anti-rust material of resin, rubber bonded to metal surface, a layer

of water vapor will be more, not conducive to the bonding between them, which In particular, time should not be using water-based

chassis armor products. When the air humidity is not greater than 60% for construction, moisture is too dry the General Assembly to

make the product difficult to directly affect the adhesion. However, this time If you hit a sunny day for a large amount of wind

construction, basically not be affected.

Inside the steam sterilization: exercise in futility

As we all know, rainy days are particularly vulnerable to breed a variety of products, so the interior space for disinfection sterilization is

particularly important. Use steam sterilization, sterilization is an effective way to inside the vehicle. Everywhere have a wet back to the

south, the proposed owners are proceeding. Because the use of steam sterilization, in itself is wet, the water will increase car

production, is particularly harmful for the electrical vehicle. Moreover, steam sterilization is generally valid for one month, but in the wet

season will produce a clear mold, if you choose the time of construction, its role will be greatly offset the cost of the owner will

increase the budget. In addition, spray fungicides are not suitable for use at this time, because the odor of these products will be

adhesion in the car, it takes more time than usual distribution.

In contrast, ozone disinfection is not subject to the impact of the wet season, during this special period, it can also play with the same

sterilization steam sterilization.

[Viable projects]

Some owners also choose this time to some of the normal installation or maintenance projects, in fact, weather has little effect on

their own, but one should pay attention to construction details, or will have adverse effects.

Posted proof membrane

After the car owners like car stickers Window Film for the general film, there have been half a day or so can not even lift the window

glass, but if the owners have to choose film in wet weather, this time to extend to two days or three days is appropriate, the causes

of insulation between the membrane and the glass water can not evaporate, if prematurely lift the window, the window will affect

the membrane surface and the bonding effect.

Leather seat care

Leather seats cleaning sounds simple, but people tend to attach importance to the first “clean” process, ignoring the back of a

“maintenance” processes. If there is a slight stain leather seating surfaces with twisted into a semi-wet cloth to wipe the look clean. If

there is oil on the leather seats, special leather seats can be evenly sprayed cleaner leather seating surfaces, no amount too much,

just need to see the seating surface has been wet on it, after spraying with a dry finish cloth to wipe clean. Note that when cleaning

leather, can be used to make leather shiny leather care products, because if the owners were not at the same time in the

decontamination and maintenance after this step, although the leather seems to be relatively clean, but over time it will be easy stiff,

cracking phenomenon.

[Proposed project]

Wet season, the vehicles often use electronic devices in particular, will affect traffic safety, including the windshield clean and maintain

the lights, audio-visual equipment to work properly.

Decontamination of the windshield

If it is slightly dirty, no need for body cleansing agent, rub with a towel directly and immediately be able to wipe clean. However, if the

glass is attached to the film, is very difficult to remove with ordinary, then, need to use special glass cleaner to remove oil film wipe, its

role is to make the film easily attached to the glass.

Use of glass-cleaning products, they should first clean the windows, otherwise the cleaning effect will be compromised. Glass cleaner in

a dry, like waxing, as will be white, as long as it with a soft cloth to wipe.

Lights, sound the best normally open

Wet weather, the lights in particular, require special inspection. For those vehicles during the day, the owners of less night, about ten

minutes at it s best to open the headlights, interior lights so that the water produced due to moisture evaporation speed. In addition,

car audio-visual equipment is also required during this special period of special treatment, and home audio and video equipment,

moisture on the same principle, with the car, even if usually do not like to open audio and DVD navigation equipment, then it should

habitually open look, and turn up the volume large.