Power amplifier and horn wiring diagram
More and more young people like to install projection equipment at home, so it is very cool to watch large movies at home. If you want to have a good sound effect, the connection layout of amplifier and loudspeaker is indispensable. So what are the wiring points of power amplifier and horn? What is the effect of power amplifier and loudspeaker wiring diagram? Let’s take a look at the relevant content with Xiaobian. I hope the introduction of Xiaobian can provide some help for the decoration of your garden family cinema, and help you have a comfortable and warm home.
Wiring points of power amplifier and horn
1. Frequency matching
Before connecting, check whether the frequency between the two matches. If the frequency does not match, the sound effect will beep after connection. Nowadays, the frequency response of power amplifiers can easily reach 20 ~ 20K, but most speakers can only achieve 80 ~ 16K, rarely 20 ~ 20K. Therefore, when we work in the system, we should not and do not need to work the frequency response of power amplifiers at 20 ~ 20K, but with the help of peripheral equipment to cut low or high, so as to adapt to the bandwidth of the speaker, so that the sound becomes better and the sound experience is better OK.
2. The impedance should be well matched
A lot of people don’t really know what impedance is. In fact, both the power amplifier and the speaker have their own nominal impedance value. The smaller the impedance of the speaker is, the greater the output power of the power amplifier is. But at this time, the influence on the power amplifier is greater, mainly the output power and stability. When the output power of the power amplifier increases, the current flowing through the power amplifier tube will increase. At this time, the temperature of the power amplifier tube will rise, and the reliability of the power amplifier tube will decrease; On the other hand, due to the existence of internal resistance and line resistance of the power amplifier, the impedance of the speaker is reduced and the relative line loss is increased, which directly leads to the reduction of the power obtained by the speaker and the decrease of the efficiency. Therefore, it is required that the impedance of the two should be matched. Generally, 8 Ω or 4 Ω speaker is appropriate, and it is not appropriate to be too large or too small. In particular, pay attention to this detail when multiple speakers are connected in series or in parallel.
3. The two are connected
The connection between the two can be better put into use, and the connection should be installed according to the corresponding process steps. First of all, look at the back of the amplifier and stereo to see whether the audio cable is complete; if not, you should first buy a section in the hardware store, not too long, otherwise it will be coiled up and put in the back. It’s easy to connect the audio cable. Find a pair of vice or scissors. Peel the audio cable end except the rubber layer on the surface to expose the copper wire inside. Generally, there are two colors: brass and silver. Pull the cover and screw the copper wire slightly by hand to make the copper wire harder. Then you can see that there are red and black terminals behind the power amplifier, the brass ones are connected to the red posts, and the silver ones are connected to the black posts. The other end of the audio cable is also connected to the back of the stereo. Some of the audio cables are of the wiring column type, and some are more convenient. They are of the snap type. Press down the clasp with your finger and poke the line in. Then release the cable, and the cable will be clamped by the clip, which is very firm. For two audio systems, connect the lines on both sides of the left and right, that is, one line on the left and one on the right. After the amplifier and audio are connected, you should input the sound source to the amplifier. Generally speaking, you can use DVD player for sound source. If you allow, you can also use notebook, etc., which is more flexible. Two audio cables with lotus head on both ends are required. The audio signal is output from L and R channels inserted in output at the back of DVD. They are also plugged into L and R on power amplifier, but pay attention to input input. The sound will be output from DVD to amplifier, and then from amplifier to audio.
4. Stereo mode design
After connecting, adjust the corresponding stereo mode. Connect the output red and black wiring of the left and right channels of the power amplifier with the red and black terminals of the left and right speakers respectively, input audio signals from the left and right channel input interfaces of the power amplifier, and use the left and right channel potentiometers of the power amplifier to control the volume of the left and right channel speakers respectively. It’s a good layout.
How to connect power amplifier with Bluetooth
The process of connecting the amplifier to Bluetooth is as follows:
1. Press the Bluetooth button of the remote control to switch to the Bluetooth channel;
2. Enter the pairing mode and turn on the Bluetooth of the device to be connected;
3. Start Bluetooth device search, select the corresponding device connection, and press enter on the remote control to confirm after pairing.
Expansion content: some old power amplifiers do not have Bluetooth function. At this time, you need to buy a Bluetooth transceiver to realize Bluetooth connection. Connect Bluetooth transceiver and power amplifier through AV audio cable, then press and hold the key of Bluetooth transceiver to enter Bluetooth pairing state, open mobile phone or TV Bluetooth search device, connect and pair.