Octave Equalizer

This Equalizer will satisfy your wishes about your sound appetizing, you can plug in your audio device or can be used as a guitar tone control. 

If you don't want your audio device looks much potensiometer control, you can change the potensiometers with trimpot and it' will hided in the equalizer box.

Schematic of Octave Equalizer

Solder side of Octave Equalizer PCB

Component Side of Octave Equalizer PCB

 Parts List :

Resistor:
R1 = 68 KOhm
R2,R6,R11,R15,R16,R17,R18,1R19,R20,R21,R22 = 1 KOhm
R3 = 6,8 KOhm
 R4,R7,R8,R9,R12,R13 =3,9 KOhm
R5,R1O = 12 KOhm
R14 = 220 KOhm
R23,R24,R25,R26,R27,R28,R29,R3O = 82 KOhm
P1...P8 = Potensiometer 10 KOhm linier

Capasitor:
C1 = 820 nF
C2,C5,C6,C9,C36 = 820 pF
C3,C7 =   100 uF/4 V
C4,C8,C24,C30 = 4,7 nF
C10 = 470 nF
C11 = 1uF
C12,C15 =  270 nF
C13,C16,C2O = 47 nF
C14,C23 =  15 nF
C17 =   12 nF
C18,C21 = 3,3 nF
C19 = 33 nF
C22 = 560 pF
C25,C34 = 1 nF
C26 = 39 pF
C27 =  560 nF
C28 =  82 nF
C29 = 27 nF
C31 = 120  nF
C32,C35 = 39 nF
C33 = 6,8 nF
C37 = 1,5 nF
C38,C41 = 470 pF  
C39 = 10 nF
C40 = 3,9 nF
C42 =  15 pF
C43,C44,C45,C46,C47,C48 = IO0 nF MKM
C49,C50 = 10 uF/25 V

Semikonduktors:
T1,T2,T5 = BC 549C/BC 550C
T3,T4,T6,T7 = BC 559C/BC 560C
IC1,IC2 = TL 084

Super Headphone Amplifier

Output Illustration

Spec. of Super Headphone Amp.

Output (in Class A) :
160mW at 8  Ohm
600mW at 30 Ohm
120mW at 600 Ohm

Distortion :
Less Than 0.01% at Normal Outout

Schematic

PCB1

PCB2

Parts List :

Reslstor :
R1,R1',R4,R5,R18,R18' = 1 k
R2.R2',R9,R9',R17,R17' = 22 k
R3,R6 = 27 k
R7,R7' = 220 k
R8,R8',R19,R19' =2k2
R10,R10',R13,R13' = 4k7
R14,R14',R20,R20' = 330 Ohm
R15,R15' = 3k3
R16,R16' = 1k5
R21,R21',R23,R23' = 820 Ohm
R22,R22',R24,R24' = 1 Ohm/1 W Carbon
P1,P2 = 50 k(47 k) Trimpot
P3,P3' = 2k5 (2k2] Trimpot
PAPA' = 10 k Trimpot

Capasitor :
C1,C1',C6,C6' = 22 p/10 V
C2,C3 = 47 uF/4 V
C4,C4' = 220 uF/4 V
C5,C5' = 33 p
C7,C7',C8,C8’ = 100 n

Semi Conductor :
T1...T5,T3',T4',T5'.T10,T11,T11',T12,T12' = BC 550C
T6...T9,T6'...T9',T14,T14' = BC 560C
T13,T13' = BD 139
T15,T15' = BD 140

Other Parts :
F1,F1' =  500 mA Fuse with socket
headsink for T13,T13',T15,T15'