First, active speakers. This set of speakers includes a power supply and an amplifier. This situation is relatively simple. Just connect the two speaker cables of the control panel speaker to another speaker, and then insert the audio signal plug into the audio input of the control panel. Connect the power cord to 220 volts and you can start listening.
Second, passive speakers. There are only two boxes with speakers, and an external power amplifier is needed. The external power amplifier can be a finished product or an amplifier board without a shell. Both the finished product and the amplifier board require that the power amplifier is dual-channel.
The connection of the finished power amplifier is relatively simple. Press the two speaker wires on the left and right channels to ensure that the polarity of the speakers is well connected. Plug in the audio input line and connect the power supply.
Extended data:
More complicated is the external power amplifier board. First, observe whether there is an AC power supply part (power transformer) on the power amplifier board and the board with transformer. The connection method is the same as that of the finished power amplifier. If there is no power transformer, there are two situations:
A, there are rectification and filtering parts, only the transformer. At this time, check whether the required input AC is dual voltage, such as dual 12V AC, dual 15V AC, etc. , and prepare a dual power transformer as required, and connect the three secondary wires of the transformer to three positions on the board. Pay attention to the center line can not be wrong.
There is no transformer, rectifier and filter. Need a complete set of (transformer, rectifier filter) dual-output power supply. The output positive voltage and negative voltage of the power supply must match the voltage on the power amplifier board, for example, the positive voltage and negative voltage are 15 volts. The connection method is: connect the three wires (positive, grounding and negative) of the dual power supply to the power amplifier board, connect the speaker as described above, then connect the audio signal wire, and plug in the power plug to start the machine.