Electronics Help Care Amplifier circuit diagram 2.1 amplifier circuit using LA4630N:
This is a 2.1 amplifier circuit using LA4630N. This diagram for 3 audio inputs and 3 outputs. We can make 2.1 using this diagram. making 2 for the left and right speakers, and another for the Bass. Stereo section 9V/3Ω 3W×3, 12V/3Ω 5W×3. Super bus section 9V/3Ω 6W, 12V/3Ω 10W. We can use 9 volts to 12 volts.
But it has no low-pass filter to make a bass/subwoofer. We have to use a low-pass filter to make a subwoofer.
This is an amplifier circuit diagram from Japanese technology. This type of amplifier can make a strong output of watts. Here, use one type of transistor. Here, use only a PNP transistor. But using dual voltage. We can use a minimum 25-0-25 voltage to 50-0-50 voltage in this circuit board. Positive, negative, and ground voltage are needed for this circuit board
Low-pass filter for subwoofer amplifier:
This is the low-pass filter for the subwoofer amplifier. This circuit needs to make a bass amplifier. We also need to make a 2.1,5.1 audio sound system. This board makes only bass. makes only the low part. It has no mid-range or high part. It’s also a pre-amplifier. It’s output mono. Input stereo but output mono. This board runs on 9 volts to 15 volts. It needs a single voltage. For this, we can use this board in a car amplifier.
DIY transistor amplifier circuit diagram using 2SC5200 and 2SA1943:
This is the DIY transistor amplifier circuit diagram using 2SC5200 and 2SA1943 transistors. This amplifier can deliver 100 watts at 35-0-35 volts and 3 amperes. It’s a mini audio amplifier circuit board. It’s a mono circuit diagram. A stereo needs a dual circuit. This circuit needs positive, negative, and ground voltage.
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