Nobels PREC free download

File name nobels_prec_preampeq.pdf

1 2 3 V+ R15 4 5 6 LEVEL 3 P1 V9 50KA 2 C15 33 C31 27N 2 V- C32 3 2 Q2 F 1K R14 56K 1 pow INPUT E J1 3 C11 2 1 J8004 56N R11 1M R12 3K9 3 C12 1 4 2.2 R13 33K Q1 K222E V+ C14 100P V+ 1 3 U1A 5 2 R16 11K V4558S C16 2.2 R32 3K3 2N7 R33 100K C2362G F TREBLE R34 2K2 C21 3 V9 50KB P2 1 2 12N C26 100P 7 C24 non shorting switch! Power on / bypass OUTPUT J2 1 3 2 1 V+ 9 8 6 V- 22N VR21 2K2 R10 33K C17 100P R22 100 2 E J8004 MID 3 1 P3 V9 30KB D R17 22K R19 1K V+ 1 3 4 4558S R18 100K U2A 5 2 2.2 C20 4558S C22 39N R20 8K2 U2B 2 C23 22N R23 10K 6 4 5 SW1B SK22F02 C25 3.3 D VV- 3 P4 V9 50KB 1 V- C 4148 Power on / bypass non shorting switch! V+ V+ V+ V+ D2 R41 5K1 BASS R24 100K V- C R47 1K5 D1 REDLED VB 2 B SW1A SK22F02 3 2 V+ C201 220 R201 15K R43 82K R44 100K C6 1 7 R45 200K 6 U1B 4558S R46 2M2 8 D201 (c) Copyright 1997 - ALL RIGHTS RESERVED All unspecified capacitors in uF, resistors carbon 5% 9 4001 J3 5 4 1 A J7001 EXTERNAL POWER SUPPLY pow 1REHOV(OHFWURQLFV Barnerstrasse 42, 22765 Hamburg, Germany http://wwww.nobels.com - email: [email protected] Title Number: Date: 1 1 R202 15K C202 220 CIRCUIT DIAGRAM PREAMP + EQ / PRE-C Time: 27-Jan-2000 18:56:51 R:\$PRO\CMPCT\PRE-C\DSGN\PREC_2A.SCH 5 V- V- V- VVV- Size: A5 Sheet 1 6 Rev: 2 of A 1 File: 4 1 2 3