Material needed to make active speakers:
- Power Supply
- Stabilizer
- Amplifier
- Tune Control
- Equalizer
- Audio Mixer
- speakers
power supply
The main part of the IC is 7818 and the 1000 uF 35V capacitor. I use a 18 VAC 1A transformer, the output of the transformer rectified by diode 1N4007 or equivalent. The voltage here is the value of the unregulated 24V to 26V DC. You must use IC1 with a suitable heatsink.
stabilizer
tool for stabilizing the voltage will then be transferred to the amplifier and components - the other components.
amplifier
a 15W audio power amplifier is built with a bridge in relations with TDA2030 voltage approximately symmetrical 18V power supply. Easy to build, do it yourself audio amplifier that will provide up to 15W at 8O speaker. Please use good headsink to cool the power amplifier TDA2030. TDA2030 integrated circuit is very cheap and useful if you want to start a small audio amplifier. The only thing to consider is to use a good power supply and heatsinks or you'll risk to burn this precious amplifier IC.
tune control
is one tool to manage hard soft bass, middle, and trieble.
equalizer
is a tool to adjust the frequency soft hard, the way it works is similar to the tuning control of the equalizer band just more than tune control.
Audio Mixer
Audio mixer used for mixing audio signals from other audio sources. characteristics of different sounds, so that each sound source requires the volume setting, frequency, and other settings. Audio mixer output of the audio signals are combined results from various sources. Audio mixer is also used in the recording studio, functions the same as using an audio mixer at music concerts.
speakers
Speaker can not be separated from audio equipment, because the sound produced by this tool. Speaker will change the audio signals into vibrations that can be heard by human ears. In the operation of the speakers will consider the input impedance (in ohms) and maximum power (watts). The speakers can be divided into two, namely passive speakers and active speakers. In passive speaker, the input signal will be directly connected to the speakers.