Mackie HD1501, Service Manual

A04

Cam 

Jones

0033371-XX

SCHEMATIC, 

FS 

INPUT 

BOARD

6-10-2009

LOUD Technologies Inc.

0033371-XX-A04.sch

© 

2009 

LOUD 

TECHNOLOGIES 

INC.

I/O_AND_EQ

2

1

3

4

5

6

7

8

D

C

B

A

87

6

5

4

ALL 

RIGHTS 

RESERVED

THE 

INFORMATION 

CONTAINED 

HEREIN

IS 

PROPRIETARY 

AND 

CONFIDENTIAL

PROPERTY 

OF 

LOUD 

TECHNOLOGIES 

INC.

3

APPROVALS

DATE

DRAWN:

CHECKED:

NP 

ENG:

MATERIAL:

MFG:

MFG 

ENG:

ISSUED:

D

SIZE

DWG 

FILE:

2

NONE

SCALE:

DWG. 

NO.

SHEET

1

1

OF

REV.

A

B

C

D

2

16220 WOOD-RED RD NE WOODINVILLE, WA 98072

159KHz

106KHz

Q = 0.707

FR = 100Hz

Q = 0.707

FR = 100Hz

100Hz LINKWITZ-RILEY HPF

159KHz

106KHz

Q = 0.707

FR = 100Hz

Q = 0.707

FR = 100Hz

100Hz LINKWITZ-RILEY HPF

Q = 0.537

FR 

= 

45.2Hz 

(40.1Hz)

NOTE: 

 VALUES 

SHOWN 

IN 

() 

ARE 

ALTERNATE 

VALUES 

USED 

IN 

FS-18 

PRODUCT.

Q = 1.307 (1.306)

FR = 45.1Hz (40.0Hz)

45Hz / (40Hz) BUTTERWORTH HPF (VLF-PROTECT)

+7.5mV

SIG-PRES

LIMIT

6.5mA

6.5mA

7Hz

320KHz

FR=43Hz (53Hz) AV = 0dB Q = 1.3 (1.2)

BOOST

+6.5dB

PARAMETRIC EQ-1

320KHz

FR=100Hz (100Hz) AV 

= 

0dB 

(-4.4dB)

Q = 0.9 (0.55)

CUT

PARAMETRIC EQ-2

320KHz

FR=200Hz 

(65Hz)

AV = 0dB Q 

= 

2.0 

(1.7)

CUT

PARAMETRIC EQ-3

-2.0dB

-1.0dB

4.7mS ALLPASS FILTER, 6TH ORDER BESSEL

(NOTE THAT VALUES SHOWN BELOW ARE FOR FS-18.  THESE PARTS ARE

NO STUFF FOR FS-15  AND THIS SECTION IS BYPASSED VIA R143.)

(+/- 6dB)

100Hz LINKWITZ-RILEY LPF

Q = 0.707

FR = 100Hz

Q = 0.707

FR = 100Hz

(+3.0dB)

(-2.0dB)

(-1.5dB)

ALL 

COMPONENTS 

THAT 

MOUNT 

TO 

THE 

SOLDER 

SIDE 

OF 

THE 

PCB 

BEGIN 

AT 

REFERENCE 

# 

100.

PCB ASSY FS-15 INPUT BOARD:  0033371-00 PCB ASSY FS-18 INPUT BOARD:  0033371-01

D109 1N4148W

D112 1N4148W

D110 1N4148W

D111 1N4148W

C148

5%

100PF

R217

1%

10K0

C147

5%

100PF

R216

1%

10K0

2

3

1

U116-A NJM4565G

R207

1%

4K99

R208

1%

4K99

C140

5%

100PF

C146

5%

100PF

C141

5%

100PF

R214

1%

4K99

R215

1%

4K99

1

2

3

4

J9 XLR-F

INPUT 

A

SCH1

SCHEMATIC 

PCB 

ASSY 

FS 

INPUT 

BOARD

0033371-XX

PCB1

PCB FAB FS INPUT BOARD 0033370-00

2

1

3

4

J7 XLR-M

THRU-OUTPUT 

A

C29 .22 50V

C28 .22 50V

R174

1%

5K11

R186

1%

10K2

2

3

1

U108-A NJM4565G

C17 .22 50V

C16 .22 50V

R127

1%

5K11

R120

1%

10K2

6

5

7

U108-B NJM4565G

2

1

3

4

J11 XLR-M

HPF-OUTPUT A

R239 150 .25W

R238 150 .25W

D113 1N4148W

D116 1N4148W

D114 1N4148W

D115 1N4148W

C136

5%

100PF

R193

1%

10K0

C135

5%

100PF

R192

1%

10K0

6

5

7

U116-B NJM4565G

R209

1%

4K99

R210

1%

4K99

C144

5%

100PF

C149

5%

100PF

C143

5%

100PF

R218

1%

4K99

R219

1%

4K99

1

2

3

4

J10 XLR-F

INPUT B

2

1

3

4

J8 XLR-M

THRU-OUTPUT B

C31 .22 50V

C30 .22 50V

R175

1%

5K11

R187

1%

10K2

2

3

1

U109-A NJM4565G

C19 .22 50V

C18 .22 50V

R128

1%

5K11

R121

1%

10K2

6

5

7

U109-B NJM4565G

2

1

3

4

J12 XLR-M

HPF-OUTPUT 

B

R241 150 .25W

R240 150 .25W

2

3

1

U114-A NJM4565G

R211

1%

4K99

R199

1%

4K99

C35 .47 50V

C36 .47 50V

R200 6K98 (7K87)

R212 8K06 (9K09)

2

3

1

U115-A NJM4565G

C24 .47 50V

C23 .47 50V

R168 2K87 (3K24)

R176 19K6 (22K1)

6

5

7

U115-B NJM4565G

R198

1%

4K99

6

5

7

U114-B NJM4565G

C22 22UF 25V

7

+

6

-

1

U118-A LM339

R246

1%

2K00

R245

1%

2K00

R244

1%

1K00

C153 .1UF 50V

R243 1M

R242 1M

R247 1M

C155 .1UF 50V

5

+

4

-

2

U118-B LM339

YEL

GRN

2

1

3

D

3

R204

1%

1K00

1

3

2

Q101 IMBT4403

R203

1%

1K00

R206

1%

1K00

R205

1%

1K00

R202

1%

10K0

R201

1%

10K0

2

3

1

U106-A NJM4565G

R165

1%

4K99

R172

1%

4K99

C122

5%

100PF

R107 4K32 (4K12)

C11 .47 50V

C12 .47 50V

6

5

7

U106-B NJM4565G

R116 20K5 (15K4)

R171

1%

XXX

R163 10K2 (7K68)

R164 9K53 (16K9)

2

3

1

U100-A NJM4565G

R133

1%

4K99

R129

1%

4K99

C117

5%

100PF

R100 10K5 (XXX)

C1 .22 50V

C2 .22 50V

6

5

7

U100-B NJM4565G

R108 13K0 (7K87)

R130 6K49 (6K65)

R131

1%

XXX

R132 24K3 (14K3)

2

3

1

U101-A NJM4565G

R138

1%

4K99

R134

1%

4K99

C118

5%

100PF

R101 1K05 (1K87)

C4 .22 (.47)

6

5

7

U101-B NJM4565G

R109 14K3 (17K8)

R135 7K15 (8K87)

R136

1%

XXX

R137 46K4 (31K6)

R102

1%

XXX

C5 .1 100V

C6 .1 100V

6

5

7

U102-B NJM4565G

R110

1%

5K62

2

3

1

U102-A NJM4565G

R141

1%

4K99

R142

1%

1K30

R139

1%

5K36

R140

1%

4K99

R143 0.0 (XXX)

CW

R4 10KB

SUB-LEVEL

R227 5K6

R232 5K6

R231 20K

R228 20K

2

3

1

U117-A NJM4565G

6

5

7

U117-B NJM4565G

C33 .1 100V

C34 .1 100V

C32 .1 100V

R229

1%

11K3

R213

1%

11K3

2

3

1

U107-A NJM4565G

C27 .1 100V

C26 .1 100V

C25 .1 100V

R185

1%

11K3

R173

1%

11K3

HDW8 PILLAR D3X23MM PLASTIC 0027343

HDW4 PILLAR D3X23MM PLASTIC 0027343

HDW3 PILLAR D3X23MM PLASTIC 0027343

HDW7 PILLAR D6.3X23MM PLASTIC 0030436

HDW12 SPCR LED T1 PVC .460 INCH 0033433

HDW13 STDF SWAGE M3 X 24MM 4.7 DIA 0008320-02

HDW1 STDF SWAGE M3 X 24MM 4.7 DIA 0008320-02

HDW2 STDF SWAGE M3 X 24MM 4.7 DIA 0008320-02

HDW10 ADAPTER BUTTONCAPS FOR 24.8MM XLR AND JACKS 0030088

HDW5 ADAPTER BUTTONCAPS FOR 24.8MM XLR AND JACKS 0030088

HDW6 RND BUTTON CAP (7MM) CONTROL GRAY TOP WHITE BOTTOM 0012143-07

HDW9 RND BUTTON CAP (7MM) CONTROL GRAY TOP WHITE BOTTOM 0012143-07

HDW11 POTENTIOMETER ADAPTER - EXTENDER 0007263-01

HDW100

STDF SWAGE M3  X 7MM 4.7 DIA

0008320-05

HDW101

STDF SWAGE M3  X 7MM 4.7 DIA

0008320-05

HDW102

STDF SWAGE M3  X 7MM 4.7 DIA

0008320-05

R103

1%

XXX

C7 .1 100V

C8 .1 100V

6

5

7

U103-B NJM4565G

R111

1%

6K19

2

3

1

U103-A NJM4565G

R146

1%

4K99

R147

1%

1K87

R144

1%

4K22

R145

1%

4K99

R106

1%

4K22

C9 .1 100V

C10 .1 100V

6

5

7

U104-B NJM4565G

R112

1%

9K31

2

3

1

U104-A NJM4565G

R150

1%

4K99

R151

1%

2K49

R148

1%

4K64

R149

1%

4K99

6

5

7

U105-B NJM4565G

R114

1%

4K99

R113

1%

4K99

C3 .22 (.47)

+15V

-15V

+15V

-15V

+15V

+15V

+15V

LIMIT

LIMITER-IN

Page 28 of 40

HD1501 SERVICE MANUAL

Page 28 of 40

0033371-XX SCHEMATIC  FS INPUT BOARD

(I/O_AND_EQ)