Other units have a graphic equalizer. five bands. is fundamentally different from other circuits that use instead of IC, the transistor and the power go up / - 24V DC, for low distortion. With the switch S1, we can isolate the EQ. inside or outside the service, so that the signal is not a passport is not altered.
PART LIST | |||
R1-4-37 = | 330 Kohms | C4= | 220uF 63V |
R2-7= | 2.2Kohms | C5= | 1uF 100V |
R3= | 120Kohms | C6= | 220nF 100V |
R5-6= | 6.8Kohms | C7= | 47nF 100V |
R8....12= | 1.8Kohms | C8= | 15nF 100V |
R13....15= | 200Kohms | C9= | 5.6nF 100V |
R16 = | 180Kohms | C10= | 47nF 100V |
R17 = | 150Kohms | C11= | 15nF 100V |
R18 = | 1.5Kohms | C12= | 4.7nF 100V |
R19....22= | 1Kohms | C13= | 1.5nF 100V |
R23....27= | 220Kohms | C14= | 470pF 100V |
R28....32= | 15Kohms | C15= | 68pF 100V |
R33 = | 10Kohms | C16-19= | 100nF 100V |
R34 = | 15Mohms | C17-20= | 470uF 40V |
R35-38 = | 220 ohms 1W | C18= | 4.7uF 63V |
R36 = | 100 ohms | RV1....5 = | 50Kohms Lin. |
C1-3 = | 1uF 40V | Q1.....7 = | BC550C |
C2= | 68pF 100V | S1= | 2X2 SW |
