What Does 12-Speakers Audio Mean?


The number of loudspeakers can determine the distribution of sound emission points, more fine, less rough. Generally, the number of speakers in high-end cars is more than that in ordinary models. The installation position of speakers often affects the sound quality of car audio, and the same pair of speakers will produce different effects in different installation positions.

Basic Features

  1. The speaker has two binding posts (two lead wires). When a single speaker is used, the two pins have no distinction between positive and negative polarity. When multiple speakers are used at the same time, the two pins have polarity.
  2. The speaker has a paper cone, which is usually black but also white.
  3. There are several categories of loudspeaker shapes, such as round, square, and oval.
  4. There is a magnet on the back of the speaker cone, and the external magnetic speaker will feel the magnetism when you touch the magnet with a metal screwdriver; there is no such feeling in the internal magnetic speaker, but there is a magnet inside the shell.

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Speaker Cleaning

The iPhone speakers are usually to the left and right of the charger port on the bottom, run a light circle around the speaker hole while applying a little pressure. Apply enough pressure to force the sticky rubber into the speaker Selfridges Discount Code NHS.


  • iPhone 12
  • iOS 14.4


Find the Speakerphone on Your Phone

iPhone speakers are usually located on the bottom to the left and right of the charger port. Usually on the left or right side of the charger port.

The earpiece is almost always located at the top of the front of the phone, where the phone rests on the ear. Wipe the speakers with a microfiber cloth dampened with rubbing alcohol. Apply a small amount of rubbing alcohol to a microfiber cloth. Gently wipe down the speakers

Clean Up Speakers

Break off a 2.5 cm thick piece of rubber and squeeze it into a ball. Keep pressing until it becomes soft and malleable. Press on the speaker hole. Apply enough pressure to force the sticky rubber into the speaker.

Clean the phone Speaker Dust

  1. Use professional cleaning tools: You can use some professional cleaning tools, such as earplugs or pen tips, to clean the speaker dust. Carefully insert the earbud or pen tip into the speaker hole, then rotate slowly to slowly suck out the dust.
  2. Use a soft-bristled brush: You can use a soft-bristled brush to clean dust from the speakers. Carefully place a soft-bristled brush into the speaker hole and rotate it slowly to slowly brush the dust out.  Best Products can understand Which products is more suitable for you.
  3. Use tape: You can use a piece of clear tape to clean dust from the speakers. Carefully stick scotch tape over the speaker hole, then peel it off slowly, slowly bringing the dust out.
  4. Use a vacuum cleaner: You can use a vacuum cleaner to clean dust from the speakers. Carefully align the nozzle of the vacuum cleaner with the speaker hole, then turn on the vacuum cleaner to slowly suck the dust out.
  5. It should be noted that you need to be careful when cleaning the speaker dust to avoid damage to the phone. If you are not sure how to clean it, it is recommended to take it to a professional repair shop for cleaning.

Speaker knowledge

  1. We always hope that the speaker unit can faithfully express every detail of the music signal, so an excellent speaker unit should have a wide frequency response characteristic, fast transient response and as little distortion as possible.
  2. The speaker unit is actually an energy conversion element, which undergoes two energy conversions of electricity-force-acoustic. In the whole conversion process, about 94% of the energy used is converted into heat. Therefore, the efficiency of the speaker is low and the distortion is large.
  3. In practice, the most widely used loudspeaker is the electrodynamic loudspeaker. It is mainly composed of a basin frame, magnet, voice coil, vibrating cone and so on.
  4. When the audio current passes through the voice coil, the voice coil vibrates under the action of the magnetic field. The cone fixed with the voice coil pushes the surrounding air to move when vibrating, so that the air density around the speaker changes, so the sound is produced
  5. Speaker units can usually be divided into full-band, low-band, mid-band, and high-band speakers.

More Steps

  1. Subwoofer: Typically handles nearly 90% of the power in the entire system. The current flowing through the voice coil is large, and the vibration amplitude of the cone is large. The cone material of the woofer is usually made of paper cones, as well as graphite reinforced polypropylene cones, carbon fiber woven basins, glass fiber woven basins, bulletproof cloth basins, and wool basins.
  2. Mid-frequency speaker: It is the key unit of the entire speaker. Generally, there are two types of mid-frequency speakers: paper cone type and dome type.
  3. The ball top type can be divided into soft top and hardtop. The soft top is generally made of hot-pressed cloth base material specially impregnated with phenolic resin. Its tone is more delicate. The hard dome is usually stamped with titanium film or aluminum film, and its sound is relatively crisp Currys Promo Codes NHS.
  4. Tweeter: It has high frequency characteristics. Its vibration system has small mass and good rigidity. Many manufacturers fill the magnetic gap of the tweeter with ferrofluid.
  5. The purpose of which is to improve the heat dissipation conditions of the voice coil, improve the power bearing capacity of the speaker, and reduce distortion.
  6. High frequency speakers generally have paper cone type, dome type, horn type and so on. The dome type has wide directivity, low distortion, and sounds natural, but has poor anti-overload ability; the horn type has high efficiency, crisp and loud treble, but poor directivity.

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