pre-amplifier

bass tone circuit board: This is a bass-tone circuit board for the amplifier. here in this circuit no need for any voltage. it’s only the controller without the pre-amplifier. it is good to use a pre-amplifier with this circuit diagram. but sometimes there has no voltage. like if we want …

Low Pass Filter For Subwoofer: This is a Low Pass Filter For a Subwoofer amplifier. we always like extra bass. We need a subwoofer box. this subwoofer needs an amplifier used in this circuit. this circuit makes only bass. it’s made only low part. this circuit we used as a …

Microphone circuit diagram for the amplifier: This is the Microphone circuit diagram. this is an easy circuit. every amplifier needs a microphone. if we want to use a microphone for the amplifier then we have to use this circuit. here used only a transistor. C1815 is an NPN transistor. This …

how to make bass treble and volume controller circuit: This is a bass treble controller circuit. this circuit needs to control the sound quality. every amplifier needs this circuit to control the bass and to control the treble. There is no pre-amplifier in this circuit. if we use a pre-amplifier …

Graphic equalizer circuit diagram: This is a 5 band audio equalizer. this circuit is used in an amplifier. normally any amplifier needs a pre-amplifier to control the sound quality. this circuit has audio input and audio output. here need 12 voltages to run this circuit. Graphic equalizer circuit diagram.   …

5-band graphic equalizer: This is for the audio amplifier circuit diagram. this circuit is used as a pre-amplifier to an amplifier. this circuit makes the sound clear and melodious. we can make the sound we want to hear. like, we can control the low part. we can control the high …

Bass tone circuit diagram: This is a Bass tone circuit diagram. this is a simple circuit. it’s a very simple circuit diagram. but the quality is very good. it’s making our amplifier quality full. we can control the sound using this circuit. here used 3 100k volumes. one for Bass …

Music light for the amplifier: This is the music light for the amplifier. this circuit is for the amplifier. this circuit we use in the amplifier. this light can make the amplifier look nice. here used a Kia6966s. this Ic has 5 led outputs. this circuit run 6 to 12 …

how to make a low pass filter for a subwoofer: this is a circuit for driving only a bass amplifier. this circuit makes bass only. when we use a sub-woofer.  every subwoofer needs a bass amplifier. every bass amplifier needs this circuit to make only bass. it’s called a low-pass filter. …

how to make preamplifier: Best preamp for amplifier. we can use this circuit diagram to increase our amplifier sound and sound quality. every amplifier needs a preamplifier to increase the sound. here used a 2n5551 transistor to increase the sound. normally we can see 4558 ic-based preamplifiers. 4558-based needs dual …