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EQ 1

2017-12-22 02:02  
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10 Band Graphic Equalizer (1)

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       With graphic equalizer we make selective cutting off or boost, of selected departments of acoustic spectrum. With this way we can adapt the musical reproduction, in the characteristics of space where we hear. This can create however also problems if go to far specifically in the gain of some area, with result the distortion. The circuit should be made in two pieces, one for each channel, the potesometer regulation it should they are Fader. With switch S1 we can by pass the circuit, leaving the musical program, to pass without alteration (FLAT). With the potesometer RV1 we regulate the gain of each channel.

??????? ?????????????? ???????? -PROTYPE SPECIFICATIONS

???????? ?????????? - Frequency Response10?? - 30 ??? ?0.5db
??????? ??????? ???? ???????? - Adjust Gain for eatch band?12 dB
??????? ??????? - Adjust Gain for eatch Channel- 9db to 14db
S/N82db
??????????? (FLAT) - T.H.D0.03%
??????? ????????? ??????? - Input Impedance47??
??????? ????????? ?????? - Output  Impedance100?
?????????? - Power Supply?15V dc / 300 mA

Part List

R1-29=100 ohmsC7=220nF 100VC20=1nF 100V
R2-5-31=1MohmsC8=100nF 100VC21=560pF
R3=47KohmsC9=47nF 100VC22=270pF
R4=15KohmsC10=27nF 100VC23=150pF
R6-28=10KohmsC11=12nF 100VC25=150pF
R7....17=1KohmsC12=6.8nF 100VC26=10uF/25V
R18....27=220KohmsC13=3.3nF 100VRV1=250Kohms Lin.
C1=47uF/25VC14=68nF 100VRV2.....12=4.7Kohms Lin.
C2=47pFC15=33nF 100VIC1...3=TL074
C3=150pFC16=18nF 100VS1=2X2 SW
C4=1.5uF 100VC17=8.2nF 100VJ1...3=RCA Jack
C5=820nF 100VC18=3.9nF 100VAll Resitors is 1/4W 1%
C6=390nF 100VC19=2.2nF 100V

 

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