240 Volts, 50/60Hz at 75 watts Phono MC, 0.45mV Standby Power, less than 2 watts Signal To Noise Ratio (A-Weighted) Note: Refer to the rear panel of the C2300 for the High Level, 93dB correct voltage. Phono, 80dB Overall Dimensions Input Impedance Width is 17-1/2 inches (44.45cm)
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C2300 MAIN 750761 SCH 1 OF 6 1.5k 1.21k 4.75k 4.75k 2.21 22pF MC OUT LEFT MC J2:1 J4:12 2.21 -15V 4.75k 4.75k 1.5k 1.21k -15V J2:3 J4:10 MC PH J2:4 J4:9 INPUTS 1.5k 1.21k 4.75k 4.75k 2.21 22pF MC OUT...
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MAIN 750761 SCH 2 OF 6 DECODER POWERON DATA SDATA DRIVER SCLK SCLK RESET TO J33 PIN3 LCLK 595CS Ext_Lamp_Control MONO MUTE -15V -15V J14:1 SPKR1 J3:12 J6:1 L MM IN SPKR2 J3:1 J1:1 J14:2 L_MC HDPH MUTE J3:11 J3:2 J14:3 J1:2 INPUT...
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C2300 MAIN 750761 SCH 3 OF 6 TO TUBE TUBE_ON LEFT VOLUME CONTROL R192 BUFFER R253 C111 -5V2 L_OUT R173 10uF LEFT LISAUD-L C120 TUBE MUTE 47uF LEFT POST ATTENUATOR U24:1 R198 -13.7V TUBE MUTE DRIVER -3dB -6dB -9dB -12dB R201 -13.7V...
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MAIN 750761 SCH 4 OF 6 LMAIN R138 LEFT + J20:18 J16:1 LEFT + J20:17 J16:2 R132 LEFT - J20:16 J16:3 J16:3 L_MAIN 100uF J20:15 LEFT - LEFT U14:1 J16:4 L_MAIN OUTPUT BUFFER -15V J20:14 LEFT J16:5 L_MAIN INVERTING LMAIN L_OUT BUFFER -15V...
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C2300 MAIN 750761 SCH 5 OF 6 METER CALIBRATION PROCEDURE APPLY A 1kHz SIGNAL TO BOTH CHANNELS. ADJUST THE LEVEL FOR 2.5VAC AT L AND R MAIN UNBALANCED OUTPUT. ADJUST R106 FOR 0dB ON THE LEFT METER. ADJUST R107 FOR 0dB ON THE RIGHT METER.
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MAIN 750761 SCH 6 OF 6 NEGATIVE 24 VOLT REGULATOR -24V IN OUT J30:1 R244 -24V R155 -33V 1.1k -24V2 R163 R245 1.1k VF-24V J30:2 J32:18 J1:1 SEC 1 POSITIVE 24 VOLT J32:17 REGULATOR J1:2 J31:12 236V J5:1 J32:16 TONE CS IN OUT J30:3 J1:3...
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TUBE 750643 SCH 1 OF 3 236V 100k 175V2 236V LEFT PHONO AMP 236V 175V2 L MM OU T J4:1 J2:12 121V .1uF 120V 110V 12AX7A L MM IN J1:1 12AX7A J3:1 J1:2 J3:2 J4:2 J2:11 J4:4 J2:9 .001uF .0033uF 236V RIGHT MM PHONO AMP...
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C2300 TUBE 750643 SCH 2 OF 3 236V LEFT MC PHONO AMP 175V3 100k 175V3 236V 236V L MC OU T J4:5 J2:8 121V .1uF 120V 110V LEFT MC 12AX7A J4:12 J2:1 12AX7A J4:6 J2:3 J4:9 J2:7 J4:8 J2:4 J4:10 J2:5 .001uF...
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TUBE 750643 SCH 3 OF 3 236V 175V1 100k LEFT 236V TUBE AMP .22uF 175V1 236V .22uF J6:4 L MAIN 2 121V J6:9 J6:3 J6:10 .1uF 120V 110V 12AX7A 12AX7A L MAIN 1 J6:12 J16:1 J6:11 J16:2 J6:5 J16:8 J6:10 J16:3 47pF -24V...
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PUSHBUTTON 750645 SCH AND PCB J1:2 J2:17 J1:4 J2:15 J1:6 J2:13 J1:8 STANDBY/ON OUTPUT2 OUTPUT1 MUTE J2:11 RESET SELECT UP SELECT DN J1:12 J2:7 J1:14 J2:5 STDBY/ON J1:17 J2:2 SETUP REC MO NITOR MONO TONE BYPASS MENU U P MENU D N STDBY_LED J1:15 J2:4...
C2300 PARTS LIST INTERCONNECT Ref. No. Description Part No. Ref. No. Description Part No. METER 124097 CAP MONO 22PF 200V 10% NPO 061339 METER 124097 CAP MONO 22PF 200V 10% NPO 061339 CAP ELECT 10UF 50V 066445 CAP ELECT 10UF 50V...
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PARTS LIST (Cont’d.) MAIN PCB 750761 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. DIODE SILICON 070174 C116 CAP MONO .1UF 50V 20% Z5U 061346 DIODE SILICON 070174 C117 CAP MONO 220PF 200V 10% NPO 061342 DIODE SILICON 070174 C118 CAP ELECT 10UF 50V...
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C2300 PARTS LIST (Cont’d.) MAIN PCB 750761 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. CONN 18 PIN FFC 117908 TRANSISTOR PNP SILICON 132304 RELAY REED SPST-NO 5V 1.2A 087078 TRANSISTOR PNP SILICON 132304 RELAY REED SPST-NO 5V 1.2A...
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PARTS LIST (Cont’d.) MAIN PCB 750761 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES MF 47.5K 1% 1/4W 144526 RES MF 1.5K 1% 1/4W 144539 RES MF 1K 1% 1/4W 144513 RES MF 1.21K 1% 1/4W 144566 RES MF 1K 1% 1/4W 144513...
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C2300 PARTS LIST (Cont’d.) MAIN PCB 750761 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. R197 RES MF 1.5K 1% 1/4W 144539 R138 RES MF 10K 1% 1/4W 144504 R198 RES MF 10M 1% 1/4W 144575 R139...
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TRANSISTOR PNP SILICON 132304 (U17) HEATSINK TO-218 080020 IC CMOS EPROM 133646 IC VOLTAGE REGULATOR VARI POS 133601 IC PROGRAMMED C2300 V1.01 133667 (U18) HEATSINK TO-218 080020 TRANSISTOR NPN SILICON 132317 IC VOLTAGE REGULATOR VERI NEG 133602 TRANSISTOR NPN SILICON...
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IC 8BIT DRIVER 133461 XLR FEMALE VERTICAL WITH LATCH 117813 IC CMOS EPROM 133646 XLR FEMALE VERTICAL WITH LATCH 117813 IC PROGRAMMED C2300 V1.01 133667 XLR FEMALE VERTICAL WITH LATCH 117813 (U4) SOCKET IC 40-PIN 178133 XLR FEMALE VERTICAL WITH LATCH 117813...
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PARTS LIST (Cont’d.) BALANCED PCB 750642 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. CAP ELECT 1UF 50V 066510 RES MF 267K 1% 1/4W 144532 CAP ELECT 1UF 50V 066510 RES MF 267K 1% 1/4W 144532 CAP ELECT 10UF 250V 066558 RES MF 267K 1% 1/4W 144532...
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PARTS LIST (Cont’d.) TUBE PCB 750643 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. TUBE 12AX7A MCINTOSH 165065 RES MF 1K 1% 1/4W 144513 (V3) SOCKET 9 PIN TUBE CERAMIC 178170 RES MF 22.1K 1% 1/4W 144564...
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PARTS LIST (Cont’d.) DATA PCB 750762 (Cont’d.) HEADPHONE PCB 750332 Ref. No. Description Part No. Ref. No. Description Part No. RES MF 221K 1% 1/4W 144629 CONN 12 PIN FFC 117907 HEADPHONE JACK 1/4 117881 RES MF 221K 1% 1/4W 144629 PC BD HEADPHONE 129674...
If a shipping carton or any of 034301 Bottom pad the interior part(s) are needed, please call or write Customer Ser- vice Department of McIntosh Laboratory. Refer to page 4. Please 017937 Plastic foot see the Part List for the correct part numbers.
The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated, who reserve the right to improve design without notice. Because of the constant upgrading of McIntosh products’ circuitry and components, the Company cannot insure, and does not warrant, the accuracy of the within schematic material, which is intended for information only.
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