An active crossover circuit will certainly produce better sound quality than the passive type, the LM741 IC used in the audio circuit this time is quite easy to get to be used as a crossover that will be forwarded to the power amplifier. Crossover on the amplifier, there are two types of crossover that is, active crossover and passive crossover. Each crossover has advantages and disadvantages depending on the needs of each. While on the crossover circuit that I share here is an active crossover circuit using IC LM741 which is none other than single op-amp IC.
Active crossovers will certainly provide better quality for your Hi-fi system that intends to upgrade the sound quality. The workings of this active crossover simply by breaking the audio input signal into 4 bands, low frequency, medium frequency, high frequency and subwoofer frequency. The circuit can be activated using double supply +15 / -15 V DC
.Below the schematic diagram of active crossover circuit.
There are some things that need to be considered in making this active crossover circuit:
- Be sure to use a good type of PCB, try fiber type. (PCB Layout design already exists)
- Power supply for the op-amp should be noted that is + 15 / -15 V DC
- Use socket for IC LM741
- Resistors and capacitors can be replaced to produce different frequency amplifiers.
LM741 IC Pin Out Diagram
PCB Layout Design Stereo Active Crossover + Power Supply
Download PCB Layout Design [HD] (Googledrive)