pre-amplifier

Mid-low high circuit diagram: This is the Mid-low high circuit diagram. this is one of the best single-voltage pre-amplifiers. here used 9 voltage. this is a mono board. if we need stereo then we have to use dual board for the dual side.  Component list: P1=0.022, P2=0.022, P3=100pf, P4=0.1, P5=0.01, …

Echo circuit diagram: This is the Echo circuit diagram for the amplifier. it’s a mono pre-amplifier. it’s needed for the microphone section. this circuit runs with 12 voltages.  Component list:   P1+P2+P5+P6+P7+P8=104. P3+P4=470. P9+P10=2n2. V1=20k. C1=47uf/50v. C2=1uf/50v. R1=22k. R2=4k7. R3+R4+R6+R7=10k. R5=15k. R8=220/2w. Z1=5.1v.  transistor circuit diagram of 2sa1943 and 2sc5200 Build …

Midrange control circuit diagram: This is a midrange control circuit diagram for an amplifier. this circuit is only for the bass control. every amplifier needs this type of pre-amplifier. without this circuit, the sound can’t be nice. it’s small and simple to make. this is a mono board. if we …

Bass control circuit diagram: This is a bass control circuit diagram for an amplifier. this circuit is only for the bass control. every amplifier needs this type of pre-amplifier. without this circuit, the sound can’t be nice. it’s small and simple to make. this is a mono board. if we …

Simple preamplifier circuit:  This is a simple preamplifier circuit diagram. this diagram for the amplifier. this diagram makes sound boosted. some of the amplifier has low sound amplifiers we can use this diagram to increase the sound. this diagram runs with 12 voltages. it’s a mono pre-amplifier.    Component list …

Bass tone circuit collection: This is a Bass tone circuit collection for the amplifier. here we can get some circuit diagrams for the amplifier. every amplifier needs a sound controller. all circuits are controllers for the amplifier. some circuits need extra power some do not need power.  5 band equalizer …

Audio reverb circuit diagram: This is an audio reverb circuit diagram for the amplifier. this circuit needs an amplifier when we use the microphone. for using a microphone this circuit is important for making quality full sound. now we get this reverb to the mixer console. or we can also …

Bridge amplifier circuit: This is the Bridge amplifier circuit diagram. it’s a pre-amplifier for the amplifier. every amplifier needs a pre-amplifier. this circuit works as a pre-amplifier. here used 60-0-60 voltage. we can use 15-0-15 voltage to 100-0-100 voltage. for this, we have to change the 4k7 resistor. for 15-0-15 …

Bass tone circuit : This is the Bass tone circuit board for the audio amplifier. every amplifier needs this circuit. it’s without a preamplifier. it’s only the audio graphic to control the sound quality. we can make the sound as we want.  here, I used 3 volumes. all volumes are …

Condenser Microphone circuit: This is a Condenser Microphone circuit diagram. this diagram is a high-gain diagram. here used a condenser to make a clear sound. also, use a battery to make a high gain. A 3.7-volt battery is used here. for this, we can use this microphone to the auxiliary …