It is not easy to make the subwoofer and the original sound system well integrated. The reason is that the cone of the sounding unit in the main speaker may be small and the cone of the sounding unit in the subwoofer is large and heavy. In addition, the subwoofer is designed to be able to reproduce more bass without requiring more detail. The main speakers are fast, clean and clear in the high section of the bass, while the bass of the subwoofer tends to be slow and dull. If you can buy a complete set of speakers from the same speaker manufacturer, the integration between the small speakers and the subwoofer will be easier. Because this set of speakers works together to work together. There will be a smooth transition between the subwoofer and the main speaker. Specifically, the crossover network separates the low frequencies of the pair of front main speakers, and also separates the intermediate and high frequencies in the signals that drive the subwoofer. If all of these are designed by the same designer. Then, the smooth transition in frequency will be better and better than that of subwoofers made by other speaker manufacturers. If you are using a subwoofer made by another manufacturer, you can use the several controls on the speaker to make some adjustments so that the speakers can be better integrated with other speakers in the sound system. “Divided Frequency Adjustment†is used to adjust the filtering frequency between the subwoofer and the main speakers. The portion below the crossover frequency will be played back by the subwoofer, while the portion with the higher frequency than the crossover frequency will be played back by a pair of lead speakers. If the low-frequency dive of the pair of small main speakers used is not deep and the crossover frequency is too low, there will be a “void†in the frequency response, and there will be a pair of main speakers that will not be responsible for it. A narrow band that is not responsible for playback by the subwoofer. Welcome to the home theater network shopping guide network!
Adjusting the crossover frequency of the subwoofer too high does not allow for good integration. The large cone woofer in the subwoofer is specifically designed to reproduce bass. When it is required to replay the high frequency of the low frequency, the low frequency of the same segment will not be as clear and clear as the small cone speaker unit in the main speaker. Finding the exact crossover frequency is the first step to achieving good convergence. In most of the subwoofer manuals, there are some tips on how to adjust the crossover frequency. According to experience, the crossover frequency of the subwoofer is adjusted to be lower. Some subwoofers also have a button or switch labeled "one digit". In order to understand the phase control of the subwoofer, it is conceivable that the subwoofer and the pair of main speakers each emit sound waves at the same time. Unless a pair of main speakers and subwoofers are equidistant from the listener's ears, the arrival time of the two sound waves will not be the same. Or, there will be a phase difference between the two. In addition, the circuit of the active power amplifier in the subwoofer will also produce some phase difference to the signal. Phase control is used to properly delay the sound waves emitted by the subwoofer so that the sound waves produced by the same pair of main speakers are consistent in time. When the phases of the two sound waves are in phase, a good sound of harmony and fusion is heard.
The way to set the phase is to use the audio device to play the music, then sit at the listening position to listen. Ask someone to turn the phase knob on the speaker (or move the phase switch) until the bass you hear is the most rounded and round. However, there are other ways to set the phase more accurately. It is guaranteed that the subwoofer and the main speaker can be completely in phase. First, adjust the speaker cable of a pair of main speakers, that is, connect the red wire of the speaker cable to the black terminal of the speaker and the black wire of the speaker cable to the red terminal of the speaker. A pair of speakers should be swapped at the same time. Then go to play a CD test record with a pure test signal recorded on it. Specially select the test signal at the same frequency as the subwoofer's crossover frequency and listen at the listening position. At the same time, please slowly rotate the phase control knob on the speaker until the lowest bass is heard. At this time, the phase control of the subwoofer has been completely adjusted. Restore the speaker wiring to a normal connection, ie red wire to red binding post, black wire to black binding post.
The principle of adjusting the phase by this method is: when the wiring of a pair of main speakers is reversed, the relative relationship between the pair of speakers and the subwoofer is reversed. When the playback frequency is the test signal of the subwoofer crossover frequency, the subwoofer will reproduce the sound of this frequency in the same pair of main speakers. When the main speaker is in phase (or close to) the phase of the subwoofer, the bass is heard to a minimum. That is to say, when the cone of the sounding unit in the main speaker moves backward, the cone of the woofer in the subwoofer moves just forward. The two opposite phase sound waves will cancel each other out and only output a small amount of bass. Then, when the pair of main speakers are restored to the original connection mode (even if it is in phase with the subwoofer), the main speaker is consistent with the subwoofer. This is the most accurate way to set the phase of the subwoofer. Unless you change the placement of the subwoofer or main speakers in the future. Otherwise, once the phase is set, there is no need to make other adjustments. Welcome to the home theater network shopping guide network!
If you have the condition to add two or more subwoofers to your original sound system, you can get a better blend. Two subwoofers will make the room's pushed air more uniform and have fewer peak standing waves. The result is that the bass in the entire room will be more round and round, and it will be better integrated with a pair of main speakers.
How Ultrasonic Humidifier Work ?
Evaporative Cool Mist Humidifier rely on fans to blow air through their filters. On the other hand, Ultrasonic Air Humidifier, such as the DITUO Ultrasonic Humidifier, contain a small Atomizing plate that vibrates at an ultrasonic frequency. These ultrasonic sounds are inaudible to humans, but they're capable of some pretty powerful things. They can also break water particles from the humidifier's built-in reservoir apart into a cool vapor. The device then emits this fine mist into the air, instantaneously distributing humidity throughout the room.
Benefits of Ultrasonic
There are several reasons why Ultrasonic Cool Mist Humidifier are worth considering for your home.
- They're some of the quietest humidifiers around. Additionally, since ultrasonic humidifiers don't use heat, they require minimal electricity. This is perhaps one of the most major advantages of ultrasonics, because it can lead to significant savings on your bills in the long run.
- Aroma Diffuser Humidifier is easily portable, and can be instantly turned on and off. There's no waiting time for a heating element to boil the water, either, because the mist is produced through oscillation.
- Considering their relatively small size, Home Humidifier can produce impressive amounts of vapor. As such, they're an ideal option for maintaining proper moisture levels in smaller rooms.
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