The sound quality of the home background music system is displayed through the speaker, and the speaker is an extremely important part of the home background music system. In order to display the sound quality, the current home background music system industry uses mostly Dingou PA loudspeaker, which can be roughly divided into ceiling, wall, and flat panels.
Ceiling speakers, as the name suggests, are speakers used on the top of the ceiling. In the market, it is divided into ordinary speakers, coaxial speakers and high-bass adjustable ceiling speakers. In terms of sound quality, the coaxial and high-bass are relatively much better, and the price is relatively high. There are a wide variety of speaker products on the market, ranging from ten yuan to several hundred yuan or even thousands of yuan, you can choose according to your own needs. You can also ask the professional advice of the home background music system manufacturer to prepare it. Wall-mounted speakers can be embedded in the wall and can be integrated with the wall. In terms of sound quality, it is far better than ceiling speakers, and can achieve better home background music effects. Flat speaker is a product in recent years, mainly using plane pronunciation. It can be customized and matched with home decoration. Due to its small size, it is inferior to ceiling speakers and wall-mounted speakers in terms of sound quality. But the advantage is that the installation is simple, because of this, the market price is not low.
1. Speaker selection basis
If the average power of each output channel of the central intelligent host is 50W (connected to a 4-8 ohm speaker), the voltage is 12V. The impedance is 4~8 ohms, and the speaker selection is carried out according to the above parameters.
2. Speaker power selection
If the output power of each channel is 25 watts, plus line loss, it is recommended that the speaker power be no less than 15 watts.
3. How to use the constant pressure horn
Choose ceiling speakers or wooden wall-mounted speakers. Many ceiling speakers have constant voltage input terminals and constant resistance input terminals. We choose constant resistance input terminals. For constant voltage speakers without constant resistance input terminals, first remove the transformer, and then connect to the central intelligent host.
4. Impedance and parallel connection of speakers
If 8 ohm speakers are used, two speakers can be connected in parallel for each left channel or right channel, which is very meaningful for our design.
For example: some master bedroom and study room together, can share a channel, that is, the left channel and right channel are connected to two speakers, one channel can be connected to four speakers, installed in the bedroom and study room. Agreed, the panels can also be connected in parallel, and a panel is installed on the wall beside the bedside of the master bedroom and the desk in the study to control the same passage. If 4 ohm speakers are used, only one speaker can be connected to each left channel or right channel, otherwise it may burn the host power amplifier array.
5. Speaker installation location and sound quality
In order to ensure the stereo effect, it is necessary to consider the characteristics of people's activities in the room when installing the speakers. For example, in the bedroom, install the speakers on both sides of the bed; in the study, install the speakers on both sides of the desk; in the dining room, consider installing the speakers on both sides of the dining table.
Under normal circumstances, keeping the distance between speakers at about 1.5 times the height of the floor will have a better stereo effect. If the room is large, you can consider connecting two 8-ohm speakers for the left channel and the right channel respectively, so that the sound quality is more uniform and the stereo effect is better.
6. Wall-mounted speakers
Some rooms have no ceiling and can only install wall-mounted speakers.
Ceiling speakers, as the name suggests, are speakers used on the top of the ceiling. In the market, it is divided into ordinary speakers, coaxial speakers and high-bass adjustable ceiling speakers. In terms of sound quality, the coaxial and high-bass are relatively much better, and the price is relatively high. There are a wide variety of speaker products on the market, ranging from ten yuan to several hundred yuan or even thousands of yuan, you can choose according to your own needs. You can also ask the professional advice of the home background music system manufacturer to prepare it. Wall-mounted speakers can be embedded in the wall and can be integrated with the wall. In terms of sound quality, it is far better than ceiling speakers, and can achieve better home background music effects. Flat speaker is a product in recent years, mainly using plane pronunciation. It can be customized and matched with home decoration. Due to its small size, it is inferior to ceiling speakers and wall-mounted speakers in terms of sound quality. But the advantage is that the installation is simple, because of this, the market price is not low.
1. Speaker selection basis
If the average power of each output channel of the central intelligent host is 50W (connected to a 4-8 ohm speaker), the voltage is 12V. The impedance is 4~8 ohms, and the speaker selection is carried out according to the above parameters.
2. Speaker power selection
If the output power of each channel is 25 watts, plus line loss, it is recommended that the speaker power be no less than 15 watts.
3. How to use the constant pressure horn
Choose ceiling speakers or wooden wall-mounted speakers. Many ceiling speakers have constant voltage input terminals and constant resistance input terminals. We choose constant resistance input terminals. For constant voltage speakers without constant resistance input terminals, first remove the transformer, and then connect to the central intelligent host.
4. Impedance and parallel connection of speakers
If 8 ohm speakers are used, two speakers can be connected in parallel for each left channel or right channel, which is very meaningful for our design.
For example: some master bedroom and study room together, can share a channel, that is, the left channel and right channel are connected to two speakers, one channel can be connected to four speakers, installed in the bedroom and study room. Agreed, the panels can also be connected in parallel, and a panel is installed on the wall beside the bedside of the master bedroom and the desk in the study to control the same passage. If 4 ohm speakers are used, only one speaker can be connected to each left channel or right channel, otherwise it may burn the host power amplifier array.
5. Speaker installation location and sound quality
In order to ensure the stereo effect, it is necessary to consider the characteristics of people's activities in the room when installing the speakers. For example, in the bedroom, install the speakers on both sides of the bed; in the study, install the speakers on both sides of the desk; in the dining room, consider installing the speakers on both sides of the dining table.
Under normal circumstances, keeping the distance between speakers at about 1.5 times the height of the floor will have a better stereo effect. If the room is large, you can consider connecting two 8-ohm speakers for the left channel and the right channel respectively, so that the sound quality is more uniform and the stereo effect is better.
6. Wall-mounted speakers
Some rooms have no ceiling and can only install wall-mounted speakers.