Ashdown Little Giant 350, 1000 Preamp Schematic电路图.pdf

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1、12345678 A B C D 87654321 D C B A Little Giant 350/1000 Little Giant 350/1000VER080222 11 Titel Size Date File Model NO: A3 23-May-2008 Little Giant PRE.sch Revision Sheetof Drawn ByJian Li R36 10K R37 47K C33 33P C29 10U - + 1 2 3 U4A TL072 C19 4U7R50 47K R10 100K + - 5 6 7 U4B TL072 C50 33P R27 10

2、0K EQ- R33 100K R8 330K R7 15K C1047NP + - 5 6 7 U2B TL072 C11 10U C9 47N R43 47K R44 15K 2 1 3 S4A DEEP 5 4 6 S4B R13 33K C15 10N C17 100n R63 1M R17 4K7 C18 2N2 C16 10NR14 33K 2 1 3 S6A SHAPE 5 4 6 S6B - + 1 2 3 U2A TL072 R67 4K7 R16 10K R15 10K R12 47K C12 33P C24 10U + - 5 6 7 U3B TM833 C8 10U R

3、25 10K R11 47K PRE-EQ 1 2 3 4 5 6 SK2 INSTRUMENT INPUT R20 10K R78 10K +15V MUTE-LO R19 10K C23 10N R22 1M R21 10K C22 100P 2 1 3 S1A ACTIVE 5 4 6 S1B - + 1 2 3 U3A TM833 R24 4K7 C20 100P R18 10K C21 1U R26 2K2 1 2 3 P1 B50K INPUT - + 1 2 3 U5A TL072 R38 100K C31 33P EQ+ C30 1U R51 100K R49 100K R42

4、 47K 2 1 3 S3A OUT 5 4 6 S3B R47 100K + - 5 6 7 U5B TL072 C25 10U R28 47K FX-SND R46 22K 2 13 Q1 J175 C39 100N R69 470K MUTE-LO R56 220R +15V Z1 9V1 C46 10U 1 2 3 4 5 6 7 8 9 IC1 LB1413 R66 47R R65 2K2 R23 10K C32 10U AK D9 LED D8 LED D7 LED D6 LED D5 LED TOP LEVEL INDICATION BOTTOM C2 470PR31 22K R

5、40 47K 1 2 3 P8 B100K - + 1 2 3 U6A TL072 R39 68k C1 1U R5 47K R4 33K 1 2 3 P7 B100K EQ+ EQ- R60 22K R57 10K + - 5 6 7 U8B TL072 R59 10K R54 10K 1 2 3 P6A B100K FREQ + - 5 6 7 U9B TL072 C26 2N2 R55 22K R53 10K - + 1 2 3 U9A TL072 4 5 6 P6B B100K C6 1UR52 47K R48 10K C7 2N2 R58 10K 1 2 3 P5 B100K HI-

6、MID EQ+ EQ- R45 22K R34 10K + - 5 6 7 U7B TL072 R41 10K R30 10K 1 2 3 P4A B100K FREQ - + 1 2 3 U7A TL072 C5 10N R32 22K R29 10K + - 5 6 7 U6B TL072 4 5 6 P4B B100K C3 1UR9 47K R6 10K C4 10N R35 10K 1 2 3 P3 B100K LQ-MID EQ+ EQ- R64 47K R1 100K C28 47N - + 1 2 3 U8A TL072 R2 47K R3 68K C27 1U R62 47K

7、 R61 15K 1 2 3 P9 B100K BASS EQ+ EQ- 84 U3C LM833 C45 100N C44 100N 84 U5C TL072 84 U6C TL072 84 U7C TL072 84 U9C TL072 84 U2C TL072 84 U4C TL072 84 U8C TL072 C13 100N C14 100N +15V -15V 1 2 3 CN7 1 2 3 4 5 6 7 8 CN4 1 2 3 P2 B50K PRE-EQ FX-SND +15V -15V OUTPUT CONNECTOR TO BACK BOARD TREBLE FREQ ALL PUSH SWITCHES ARE - DOUBLE POLE POLE CHANGE OVER - LATCHING P4 & P6 ARE DUAL GANG ROTARY 9MM POTENTIOMETERS P1,P2 & P8 ARE SINGLE ROTARY 9MM POTENTIOMETERS P3,P5,P7 & P9 ARE 30MM SLIDERS D1 LED R68 3.5K +15V (1/1) RadioFans.CN 收音机爱 好者资料库