Crest CA12 free download

File name Crest-CA12 pwramp.pdf

3097.SCH-1 - Fri Aug 29 15:32:24 2003 3097.SCH-2 - Fri Aug 29 15:32:58 2003 8 7 6 5 4 3 2 1 SERVO SEND CH A +HI RL 1 2 3 J7A 22-29-2031 1 2 3 J7B 22-29-2031 TO DISPLAY PCB D VR SEND B VR GND VR RET B -15.5V STEREO/BRIDGE +15.5V IC103C LM339D 14 R174 R139 825K/1% R130 33.2K/.1%.5W R132 0.1/200V R159 576/1% C114 Q111 MMBT5551 D C112 1.5K/1W 10K C&K TS01 R2 10K/1% 6 5 +15.5V +15.5V R129 R1 10K/1% C2 5 C8 D4 1N4148 - SIG IN R3 10K/1% 33pF/50V R9 48.7K/1% D2 1N4148 D6 1N4148 6 5 + 7 R11 100K 3 2 C10 0.1/25V C12 R21 10K R23 8 IC1A NJM5532M 1 R19 4 220K D15 1N4148 C14 2.2/5%/63V IC3A NJM5532M D16 1N4148 2 3 2.7K -15.5V +20.5V 8 ATT. VOLTAGE 4 R120 576/1% R140 825K/1% 2 IC103A LM339D D121 1N4148 IC103B LM339D 1 7 + R142 2K21/.1% D123 1N4148 R126 243K/1% R133 6 R131 33.2K/.1%.5W R128 + ATTENUATOR DRIVER 4 CURRENT LIMITER 1 10K 33.2K/.1%.5W Z100 R144 2K29/0.1% 3 TO MODULE A 3.9K RETURN FROM VR OUTPUT TO VR R13 220K R141 2K21/.1% 7 IC3B NJM5532M +20.5V + R125 243K/1% D122 1N4148 R143 2K29/0.1% + 12 470pF/50V 2.2/5%/63V 2 + - 3 J1 NC3FD 1 + SIG IN R5 10K/1% R7 48.7K/1% IC1B NJM5532M C5 33pF/50V D8 1N4148 C1 -20.5V D117 BALANCED INPUT/GAIN CH A -20.5V 0.1/25V SERVO/HIGH PASS R155 J3 PHONEJACK STEREO R35 1K/1% +15.5V R38 576/1% R36 1K/1% OTA CH B +15.5V R33 1K/1% R37 576/1% C19 0.22/16V OTA CH B 68.1/1% MMBT5401 Q105 R162 68.1/1% C110 0.001/50V R172 68.1/1% R168 68.1/1% 1N4148 C16 0.1/25V IGM VALUES W ILL BE CONFIRMED AFTER PROTO BUILD R29 2.7K R27 +15.5V GND -15.5V -20.5V OTA CH B 10K 1 2 3 4 5 6 7 8 D19 +20.5V OTA CH A 2 4 6 8 10 12 14 16 18 20 J8 CA-20H-2B-S TO PWR SUPPLY C17 OTA CH A 10/50V Z1 GND -20.5V +15.5V -15.5V OTA CH B ATT. VOLTAGE SERVO SEND CH B OUTPUT TO VR RETURN FROM VR R14 220K +18V CH B C7 D3 1N4148 - SIG IN R4 10K/1% R6 10K/1% 4 D7 1N4148 2 D1 1N4148 D5 1N4148 0.1/25V C11 +20.5V C3 R20 220K R220 576/1% R22 10K C13 R24 2.7K R241 2K21/.1% 7 +20.5V R229 3.9K 3 1 5 4 + 12 R240 825K/1% R242 2K21/.1% D223 1N4148 R226 243K/1% 8 +15.5V D221 1N4148 +15.5V IC203C LM339D R225 243K/1% -15.5V R239 825K/1% C21 -15.5V MLL4732 22/35V C15 0.1/25V 22/35V ATTENUATOR MLL4732 C22 10/50V Z2 R28 47K 1N4148 R34 1K/1% IC4 NE5517AD 1N4148 R32 47K C18 R30 2.7K 16 15 14 13 12 11 10 9 D20 OTA CH A R31 10K C20 0.22/16V R7-R9 IS BASED ON 700 WATTS @ 8 OHMS C OTA CH A 1 3 5 7 9 11 13 15 17 19 +20.5V TO MODULE B 8 9 14 - 2.2/5%/63V 33pF/50V R10 48.7K/1% 2 3 8 C9 470pF/50V 1 5 6 IC2A NJM5532M R12 100K + 7 2.2/5%/63V 6 5 + + SIG IN 3 J2 NC3FD IC2B NJM5532M 1 B R8 48.7K/1% C6 33pF/50V D18 1N4148 D17 1N4148 + IC5B NJM5532M 2 3 IC5A NJM5532M + 4 2 IC203A LM339D +15.5V J4 C4 0.1/25V -20.5V -20.5V R228 10K ATTENUATOR DRIVER CURRENT LIMITER A 8 7 6 5 4 + BALANCED INPUT/GAIN CH B SERVO/HIGH PASS - PHONEJACK STEREO -15.5V R238 10K IC203B LM339D 1 + + VR RET A VR GND VR SEND A 3 2 1 SW1 R138 8 9 - 33.2K/.1%.5W 0.1/50V 2SC3645 Q106 R157 68.1/1% Q108A MMPQ6700 Q109 2SC3645 R176 MMPQ6700 Q108B 47 C117 R161 68