Ashly Operating, Manual - DLM-821 Stereo Ducking Line/Microphone Mixer, DLM-821 Channels, Left

12

Operating

E

D

C

B

A

1

2

3

4

5

6

7

8

Channel 1

Phantom Pwr

Mic/Line

D103

C1

Channel 2

Mic/Line

D203

+18

RPeak

+18

Phantom Pwr

RPeak

+18

+18SW1

12

In-Mic

1N4148

12

In-Mic

1N4148

R78

Right/Mono/Mic

SW103A

36

R108

10

11

None

C107

Right/Mono/Mic

+18SW1

R208

10

11

C2

J7

C207

25

SW102D

R119

.1U

SW202D

33K

.1U

41

1.15k

1.15k

C104

27p

C204

27p

SW DPDT

390K

C108

R202

None

CH2 Detect Enable

C7

C208

R101

R102

R201

3.3K

R107

.1U

R207

R219

.1U

3.3K

3.3K

R103

3.3K

R203

J1

C101

39.2k

C201

39.2k

390K

+18

27P

1.15k

6

-18

1.15k

6

-18

C102

7

9

C202

7

13

1 2 3

C43

4

U101B

U201B

R60

47U

5

U2C

8

CH1 Det

47U

5

U2D

14

2

D7

47U

R104

C103

2043

R117

R118

10

47U

R204

C203

2043

R217

R218

12

1K

47U

U2A

1

1.15k R105

TLE2064

1.15k R205

TLE2064

3

1N4148

EUROBLOCK 6

100K

100K

EUROBLOCK 6

100K

100K

TLE2064

1.15k

R106

39.2k

27p

1.15k

R206

39.2k

27p

11

J101

SW102C

C109

Channel 1 Mute

J201

SW202B

C209

Channel 2 Mute

7

47U

4

47U

-18

6

8

In = Channel On

6

5

In = Channel On

5

In-Mic

9

5

In-Mic

6

In SW101B

In SW201B

4

6

4

6

+18

3

Mic/Line

VR101D

4

5

3

Mic/Line

VR201D

4

5

8

2

C106

27p

2

C206

27p

R214

1

B20k

R113

1

B20k

R213

VREF

3

R114

1

R112

RBus

R212

RBus

U17A

/ATTN

5.6k

5.6k

5.6k

5.6k

2

10.0k

10.0k

NJM2903

6

Level

6

Level

1

R80

C34

4

-18

Pan

-18

Pan

SW104B5

R109

SW204B5

R209

3

CH2 Mute

1M

.1U

4

4

VR101B

4

4

VR201B

10.0k

C110

10.0k

C210

Q3

SW DPDT

2

B20k

VR101A

SW DPDT

2

B20k

VR201A

2

3

U101A

1

B20k

3

U201A

1

B20k

J110

SW104A2

3

SW204A2

3

VR101C

VR201C

1

R110

8

2043

47U

1

R210

8

2043

47U

SW DPDT

10.0k

C105

D104

B20k

R115

R116

SW DPDT

10.0k

C205

D204

B20k

R215

R216

6

7

Left

R111

LBus

Left

R211

LBus

U17B

+18

1N4148

+18

1N4148

10.0k

27p

5.6k

5.6k

10.0k

27p

5.6k

1

Q4

5.6k

5

Stereo/Mono

10

Stereo/Mono

10

LPeak

Level

11

LPeak

Level

11

3

NJM2903

Stereo = Out

Stereo = Out

SW201D

CH2 Mute

12

In

12

In

J110

SW101D

2

Four-Ganged Pot

			D
			C
			B
		Ducker Detector	A
			CW
R73	VREF	/ATTN

33K

+18

R36

R62

+18

R74

C8

18K

33K

1K

27P

+18

5mA Typ.

R76

Ducker Enable

C27

8

Q1

D4

3

470K

2N4125

R59

6

1N4148

U13A

1

/ATTN

36 SW3A

4PDT Switch

CH1 Det

7

52

1K

U2B

2

R77

VCA-DC

47U

NJM2903

Q2

C31

14

5

TLE2064

4

10M

2N4123

47U

SW DPDT

9

12

R1

R61

C30

1M

560

C

8

11

D

.1U

(0 dBu Threshold)

(-30 dBu Line)

J13

7

10

Ducking Level

(-60 dBu Mic)

+18

3

6

D6

+18

J16

A

2

5

B

1N746A

1 2 3

1

4

-90dB

-20dB

	Q5	Q6			R75
	2N4125	2N4125			100K
				CH2 Mute	Q7
	R72				2N4123
	10K	D8	R81		C $VKO\￿$XGLR￿,QF
VREF 5	U13B 7 ￿&+3ULRULW\(QDEOHG1N4148		18K
					847 Holt Road
6	NJM2903				Webster, NY 14580-9103

3 2 1

-18

D22

Phone:(716) 872-0010Fax: (716) 872-0739

J6

C20

1N5818

Size

Sheet # 2

of

6

A->B @ 157%

Drawn By

Print Date 11:44:12

Rev.

B

James B Franks

D

.1U

10S8210-2.sch

22-Jan-2004

J12

DLM-821 (Channels 1-2)

APPROVED:

Dwg # 10s8210

1

2

3

4

5

6

7

8

E

D

C

B

A

Manual - DLM-821 Stereo Ducking Line/Microphone Mixer