Wednesday, May 02, 2018

2.1 Stereo + Subwoofer Preamplifier Circuit

2.1 audio preamp  2.1 channel home amplifier  2.1 amplifier home  parasound p5 2.1 preamp  2.1 amplifier receiver  2.1 channel amplifier  preamp with room correction  amplifier 2.1 speaker system

Pre-amp 2.1 Stereo + Subwoofer this system is part of tone control for speaker 2.1 channel system. This 2.1 audio preamplifier circuit there are some settings, for subwoofer settings, there are VOLUME SUBWOOFER, FREQUENCY, and PHASE. As for stereo channel or satellite speakers, there are settings VOLUME, MIDDLE, TREBLE, AND MIDBASS. This circuit is very compatible with 2.1 Channel home audio amplifier and can be applied to car audio 2.1 channel amplifier.

Below the circuit schematic of 2.1 Preamp Tone Control:
2.1 amplifier circuit board
Component List
R1, R5= 5K6
R2, R6, R9, R33, R45, R46= 22K
R3, R4, R7, R8, R15, R21, R30, R31, R37, R42= 10K
R10, R25, R34= 68K
R11, R14, R16, R17, R20, R22, R47, R48= 1K
R12, R13, R18, R19= 100K
R23= 27K
R24= 470K
R26, R27= 3K9
R28, R29= 15K
R32= 100R
R35, R36, R40, R41= 8K2
R38, R39, R43, R44= 4K7
C1, C3, C6, C8=1u/25V
C2, C7, C13, C16= 22p
C4, C5, C9, C10= 56N/ 47N
C11, C14= 470N
C12, C15= 1N
C17, C18, C19, C20, C22, C24=100N
C21= 220N
C23= 47N
C25= 68N
C26, C29= 4N7
C27, C30= 10N
C28, C31= 2N2
C32, C33= 1000uF 50V
C34, C35= 22uF/50V
C36, C37, C40, C41, C42, C43= 220uF/ 25V
C38, C39, C44, C45= 100N
D1, D2, D3, D4=1N4007
D5, D6= Zener 12V - 15V
U1, U2, U3= NE5532
U4= TL084
Q1= TIP31 
Q2= TIP32
J1= Stereo Input
J2= Stereo + Subwoofer Ouptut 1.Sub Out 2. L Out 3.R Out 4. Gnd
J3= V Input AC 20V CT

PCB Layout Design

2.1 audio preamp  2.1 channel home amplifier  2.1 amplifier home  parasound p5 2.1 preamp  2.1 amplifier receiver  2.1 channel amplifier  preamp with room correction  amplifier 2.1 speaker system


Download
Gerber Files= 2.1 Preamplifier PCB Gerber 
Password=elcircuit.com

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6 Comments

hi my self niraj & following you since month on this site ..really great work u have done..i am looking for 5.1 amp & matching tone control board design & pcb please suggest me on my mail or whatsapp Mail id is : niraj.panchal9@gmail.com & whatsapp +919426801184

also advise your contact Or whatsapp no

i want to buy a 2.1 pre ampilifer

you can see my post about 5.1 amplifier with gainclone power

Y I can't able to open ur gerber file in Proteus 8


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