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Redrawn by: J.H.G. Rothengatter

Date: 30-04-2013

Title:

Revision: 0.1

D&R Electronica Weesp B.V. Rijnkade 15b, 1382 GS , Weesp, The Netherlands, Phone: +31 (0)294 - 418 014, Fax: +31 (0)294 - 416 987, Mail: info@d-r.nl

R22

47

R23

1

0

0

K

R

2

0

47µF/25V

+

-

C12

A8

47µF/25V

C13

1

K

R

2

1

8K2

R18

47

R19

1

0

0

K

R

1

6

47µF/25V

+

-

C9

A7

47µF/25V

C10

1

K

R

1

7

8K2

PHONES
out

R11

3K9

R12

A5

47µF/25V

C7

1

K

R

1

0

8K2

VU
- LEFT
- PFL
- FOLDBACK
- ECHO

10K

R6

82pF

C5

A3

18K

R8

10K

R7

A4

47µF/25V

+

-

C6

4

7

K

R

9

LEFT 

RIGHT

FOLDBACK

100K

R1

10pF

C1

A1

150K

R3

47K

R2

A2

47µF/25V

+

-

C4

1

0

K

B

100

R4

4

7

K

R

5

47µF/25V

+

-

C2

10pF

C3

Fader

ECHO
send

S1

Left/Right 

à

Pfl 

à

Foldback 

à

Echo 

à

2

2

K

A

R14

3K9

R15

A6

47µF/25V

C8

1

K

R

1

3

8K2

VU
- RIGHT

2

2

K

A

2

2

K

B

2

2

K

B

ECHO

PFL

….KA = LIN
….KB = LOG

+

-

+

-

+

-

+

-

Volume
Phones

MR 600 Echo +  PFL

a

b

c

8

9

10

7

6

5

47

R300

47

47µF/25V

C301

R301

47µF/25V

C300

0

+15 V

-15 V

A1, A4, 

A5, A6

TL074

4

11

4

11

-

14

13

12

1

2

3

VR1

VR2

P1b

P1a

14

12

13

10 pF

C11

10pF

C14

14

12

13

1

3

2

A

C

1

2

3

4

7

8

9

10

E

LV

RV

PR

PL

L

R

F

P

E

3

4

5

6

7

1

2

+

0

+

-

+

-

A2, A3, 

A7, A8

TL074

Rotary switch PCB

8

9

10

Volume
Phones

Summary of Contents for MR600

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Page 14: ... Rijnkade 15b 1382 GS Weesp The Netherlands Phone 31 0 294 418 014 Fax 31 0 294 416 987 Mail info d r nl All electronic schematics redrawn by J H G Rothengatter Electronic schematics Frontpage Revision 0 1 Replaced old electronical drawings on base of reversed engineering Added PCB layout s ...

Page 15: ... T2 R29 R30 10KB FOLDBACK Mix bus 10KB 47µF 25V C11 C14 47µF 25V A5 C12 1K R21 1K R20 47µF 25V C13 10KB 4K7 R22 4K7 R24 10KA 47k R23 47k R25 LEFT Mix bus RIGHT Mix bus 10k R28 PFL Mix bus ECHO Mix bus PFL 47K R19 47k R26 47µF 25V C10 47K R27 D2 680 R31 Foldback Echo Pan Fader 10K 100KA R13 22nF C6 10K R12 100KA high low C7 10K 100KA R18 10K R17 18K 47K R14 R15 C9 10K R16 C8 A4 1nF 6 8nF 10nF mid 4...

Page 16: ... 5 6 MR600 STEREO CH 1 P1a 150 R7 18K R48 R49 A6 1 2 3 180K C45 10K 100KA R51 22nF C46 10K R50 100KA high low C47 10K 100KA R56 10K R55 18K 47K R52 R53 C49 10K R54 C48 A7 1nF 6 8nF 10nF mid P3b P2b P4b 1 2 3 22KB gain P1b 150 100K R41 100 R45 100K R43 33nF C42 10K R44 6 8nF C43 C41 47µF 25V 390 R42 47µF 25V C44 47K R46 A5 1 2 3 R47 INSERT Left 4 7pF R9 A2 7 6 5 180K C5 10K 100KA R11 22nF C6 10K R1...

Page 17: ...47µF 25V C51 1K R61 1K R60 47µF 25V C52 22KB 4K7 R62 10KA 47k R63 47K R59 47k R64 47K R57 Echo Pan 1 3 2 F2 P6a P7 a c b 22KB FOLDBACK Mix bus 47µF 25V C50 Foldback P5a F 47K R17 22KB Foldback P5b LEFT Mix bus RIGHT Mix bus PFL Mix bus ECHO Mix bus E L R P 68K 56K BC546 T1 BC546 T2 R65 R26 C12 47µF 25V PFL D1 680 R27 S1 68K R25 47µF 25V C10 4K7 R18 4K7 R58 A B A4 A8 47 R300 47 47µF 25V C301 R301 4...

Page 18: ... 0 294 416 987 Mail info d r nl LEFT out 100K R2 10pF C2 A1 47K R3 A2 47µF 25V C5 10KB 100 R5 47K R6 47µF 25V C3 Fader 10KB 10K R1 TDA1034 TL071 2 3 6 2 3 6 10pF C4 150K R4 C302 C303 100 R7 47µF 25V C1 L LEFT Mix bus L ECHO return L El El P1 a b c 47 R300 47 47µF 25V C301 R301 47µF 25V C300 0 15 V 15 V A1 TDA1034 A2 TL071 7 4 7 4 0 100nF 100nF MR600 LEFT CHANNEL ...

Page 19: ...0 294 416 987 Mail info d r nl RIGHT out 100K R2 10pF C2 A1 47K R3 A2 47µF 25V C5 10KB 100 R5 47K R6 47µF 25V C3 Fader 10KB 10K R1 TDA1034 TL071 2 3 6 2 3 6 10pF C4 150K R4 100 R7 47µF 25V C1 RIGHT Mix bus ECHO return R Er Er R R P1 a b c C302 C303 47 R300 47 47µF 25V C301 R301 47µF 25V C300 0 15 V 15 V A1 TDA1034 A2 TL071 7 4 7 4 0 100nF 100nF MR600 RIGHT CHANNEL ...

Page 20: ...1 0 294 416 987 Mail info d r nl FOLDBACK out 100K R2 10pF C2 A1 47K R3 A2 47µF 25V C5 10KB 100 R5 47K R6 47µF 25V C3 Fader 10KB 10K R1 TDA1034 TL071 2 3 6 2 3 6 10pF C4 150K R4 100 R7 FOLDBACK Mix bus 10KB 10K R1a El Er P1b P1a F F a b c C302 C303 47 R300 47 47µF 25V C301 R301 47µF 25V C300 0 15 V 15 V A1 TDA1034 A2 TL071 7 4 7 4 0 100nF 100nF MR600 FOLDBACK CH ...

Page 21: ... 10K R7 A4 47µF 25V C6 47K R9 LEFT RIGHT FOLDBACK 100K R1 10pF C1 A1 150K R3 47K R2 A2 47µF 25V C4 10KB 100 R4 47K R5 47µF 25V C2 10pF C3 Fader ECHO send S1 Left Right à Pfl à Foldback à Echo à 22KA R14 3K9 R15 A6 47µF 25V C8 1K R13 8K2 VU RIGHT 22KA 22KB 22KB ECHO PFL KA LIN KB LOG Volume Phones MR 600 Echo Phones PFL a b c 8 9 10 7 6 5 47 R300 47 47µF 25V C301 R301 47µF 25V C300 0 15 V 15 V A1 A...

Page 22: ... nl Heatsink C1 4700µF 25V S1 Mains 230V 50Hz OFF ON IC1 12 11 10 2 1 3 8K2 R2 4 R1 C3 100µF 25V 6K8 R3 1nF C2 13 6 5 7 T1 T2 BD237 IC1 IC2 UA723 1W 15V 0V 15V B E C T1 Heatsink C4 4700µF 25V IC2 12 11 10 2 1 3 8K2 R5 4 R4 C6 100µF 25V 6K8 R6 1nF C5 13 6 5 7 1W B E C T2 Fuse 500mA 230VAC Transformer TR1 MR600 Power Supply Mains 4 x 1N1401 4 x 1N1401 0 2K2 R7 H1 D1 D2 D3 D4 D5 D6 D7 D8 P G N ...

Page 23: ...301 R301 R13 R18 C7 R15 R17 R16 C8 C6 R12 R14 C1 C2 R4 R3 R1 C3 R7 R3 R6 C4 R9 R10 C5 F1a F1b C11 R19 R300 C300 R8 C9 R29 C1 R2 C3 C2 R3 R4 R41 R1 R42 R5 C 4 1 C43 R44 R43 C42 R45 C301 R46 R6 C4 C44 A1 2 3 4 5 6 7 8 R8 R9 C5 R47 R7 P1b gain P1a P2b high P2a R48 R49 C55 1 2 3 4 5 6 7 8 A2 A6 1 A5 C47 C48 R55 R15 P3b mid P3a P4b low C49 R56 R16 R50 R10 C9 C8 C7 R13 R R12 1 2 3 4 5 6 7 8 A3 A7 R53 R5...

Page 24: ...R5 R7 TL071 C303 A1 1 2 3 4 5 6 7 8 TDA1034 C5 R1a R2 C2 F1a F1b F1c R1 R300 C300 R301 C301 C1 C302 0 Er R L R echo P1a R3 R4 C4 1 2 3 4 5 6 7 8 A2 R6 C3 R5 R7 TL071 C303 A1 1 2 3 4 5 6 7 8 TDA1034 C5 R1a R2 C2 F1a F1b F1c R1 R300 C300 R301 C301 C302 0 F P1b F Er El Er El Volume phones P1a P1b 1 2 3 4 5 6 7 14 13 12 11 10 9 8 A8 A3 A2 R4 A7 R3 R2 R C2 C4 C7 R17 R18 R19 R21 R20 R16 R22 C14 C11 C5 C...

Page 25: ...de 15b 1382 GS Weesp The Netherlands Phone 31 0 294 418 014 Fax 31 0 294 416 987 Mail info d r nl UA723 1 2 3 4 5 6 7 14 13 12 11 10 9 8 D6 D8 D5 D7 C5 R4 R5 R6 C6 1 2 3 4 5 6 7 14 13 12 11 10 9 8 D2 D4 D1 D3 C3 R1 R3 R3 C2 C1 UA723 Phones out R7 S1 FUSE TR1 P G N PR PL 0 C4 T2 T1 PCB Power Supply ...

Page 26: ...L R 0 P 1 2 3 4 5 6 7 8 9 10 11 12 LEFT RIGHT FOLD BACK ECHO PHONES F E L R 0 P Ouput left Output right Output foldback Output echo Input echo l r 0 L F PR PL LV RV E El Er Er El LV RV L R F E Er R Er El El PR PL F E L R 0 P overload pfl Wiring and mixbus scheme LEFT MASTER CHANNEL RIGHT MASTER CHANNEL FOLDBACK MASTER CHANNEL PHONES PFL ECHO VU Rotay switch POWER SUPPLY CHANNEL CHANNEL CHANNEL CHA...

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