Alto MAXI-Q Service Manual

MODEL: MAXI-Q

www.altoproaudio.com

Version 1.0

CONTENT

1. Introduction…………………………………………………………………….1

2. Specification…………………………………………………………………...2

3. Block Diagram………………………………………………………………....3

4. Schematic Diagram…………………………………………………………...4

Wiring Diagram………………………………………………………………...8

5.

6. PCB Layout……………………………………………………………………..9

7. Exploded View & Mechanical Parts List……………………………..20

8. BOM..........................................................………………………………….23

1. Introduction

Single rack unit

2 COMBO input connectors are compatible with balanced XLR and JACK

2 outputs with balanced XLR connector

A/D and D/A converters for a 117dB dynamic range

Delay lines up to 2715ms for each input channel

10 Factory presets and 128 user presets by large memory capacity

Switching power supply

Remote control

- 1 -

2. Technical Sepcification

INPUT section

Output Section

DSP Section

Features

General Performance

General

Connectors

Nominal input sensitivity Input Impedance

Maximum Input Level Input Gain -30 / +6 dB variable in 0.5 dB steps

Connectors Output Impedance Nominal Output Level Maximum Out put Level Output Gain

A/D converters D/A converters Internal dynamics Sampling frequency

Delay Step Max Delay time

EQ Gain

EQ Bandwidth PEQ freq GEQ freq Memories Communications Frequency Response Dynamic range

Channel Separation Distortion (THD)

Input Meter

Output Metering

Dimensions

Weight Power supply

2 x COMBO

0 dB (0.775 V) 30kOhm, electronically balanced

+20dBu

2 x XLR-M 600 Ohms, electronically balanced

0 dBu +20 dBu

-30 / +6 dB variable in 0.5 dB steps

24 bit 24 bit

40 bit 48 kHz

21 microseconds minimum 2715 ms +/15dB, variable in 0.5dB steps

0.05 to 3.00 octaves, variable in 0.05 steps

15.6 Hz to 16 kHz

25 Hz to 20 kHz

FACTORY PRESETS are 10 + 128 USER PRESETS 9-pin RS232, XLR-F RS485 IN, XLR-M RS485 OUT

20Hz - 20kHz, 0.25dB

>117dB 20Hz to 20kHz

>100dB 20Hz to 20kHz

0.05%, 20Hz to 20kHz

-24dB, -18dB, -12dB, -6dB, CLIP relative to Clip point (+20dBu)

483 44 300

4.0 Kg see label on the unit

mm

- 2 -

3. Block Diagram

D

6

54321

C

Left O utput

Dac OUT1

B

Right Outp ut

OUT1

Dac

A

GEQ P EQ

MAXI-Q BLOCK DIAGRAM

InputGain Delay 30 Band 5 Band Input Gain OutputGain Mute Meter

IN1

Left O utput

D

C

InputGain Delay 30 Band 5 Band Input Gain OutputGain Mute Meter

IN1

Right Outp ut

1 2 3 4 56

B

A

- 3 -

4. Schematic Diagram

D

+12V

10U

100N

10U

100N

DCAS

AA17

TP13

100R

135

A_A16

165

AA17

5 6

C70

C8

+12V

+5VA

16

NC32NC

29

DOE

AA18

TP12

1

+5VD

139

136

A_DE

A_WEB

A_A17

A_A18

166

167

AA18

AR6 4K7*4

7 8

100N

10U

84

28

26

23

322

HM5118160ALJ-70

(DRAM 1M*16)

DRAS

R86 100R

R87 100R

31

D0 LCD

EN29F040

R89

100R

TP33

140

125

A_CS0

A_LCAS_W0

A_UCAS_W1

A_A19

A_A20

A_A21

A_A22

168

169

170

TP34

1 2

3 4

5 6

DGND

IC1C

MC33078

IC2C

MC33078

IC3C

MC33078

IC9C

AK5383VS

DCAS

DWR

DOE

34

33

32

D_OE

D_WR

D_CA5

80

D1 LCD

84

IC19B

24LC256-I/SN

3216

+5VD

7

MODE

SDL5SCL6E01E12E2

IC19A

R95

4K7

R96

4K7

R92

100R

132

133

134

103

A_CS1

A_CS2

A_CS3

P30/A30

A_A23

P23/ALE96P00/D2867P01/D2968P02/D3069P03/D31

171

AR5 4K7*4

R73

7 8

C69

100N

C7

10U

-12V

C39

C40

C61

27

21

DGND

2 1

C60

C38

C37

C74

C73

R85 100R

R88 100R

RED208

3

PWM LCD

97

104

126

P31/A31

P24/ACK

70

MUTE

4K7

DGND

12345

6

CN2

6P-2.5

8

7654321

+5VD

21

C79

10U

C80

100N

+5VD

C71

10U

C72

100N

-12V

+12V

+5VA

DGND

IC12B

AK4393VF

8 7

IC9B

AK5383VS

DD0

DD1

DD2

DD02DD13DD24DD35DD47DD58DD69DD7

A017A118A219A320A423A524A625A726A8

IC13A

DA0

DA1

DA2

DA0

DA1

DA2

DA3

AR10

100R*4

1 2

3 4

5 6

7 8

D_A035D_A136D_A239D_A340D_A441D_A542D_A643D_A744D_A845D_A9

D_D0

D_D1

D_D2

D_D3

IC18B

201

202

203

204

1 2

3 4

5 6

7 8

DD0

DD1

DD2

DD3

AR4

100R*4

AA3

AA2

AA1

AA0

TP27

TP28

TP29

TP30

12

A0

A111A210A39A48A57A66A75A827A9

D013D114D215D317D418D519D620D7

IC17A

TP1

TP2

TP3

TP4

D0D1D2D3D4D5D6

105

106

109

110

A_D0

A_D1

A_D2

A_D3

A_A0

A_A1

A_A3

A_A2

IC18A

182

181

179

180

AA0

AA1

AA2

AA3

2415

DGND

1716

IC12C

AK4393VF

+5VA

DD3

DD4

DD5

DD6

DD7

DD8

DD9

DD10

DD11

DD12

DD13

DD14

10

34

DD833DD9

DD1035DD1136DD1238DD1339DD1440DD15

A928NC11NC12NC15WR13RAS14OCAS30CCAS31OE

27

DA3

DA4

DA5

DA6

DA7

DA8

DA9

DWR

DRAS

DA4

DA5

DA6

DA7

DA8

DA9

AR9

100R*4

R93

100R

R94

1 2

D_D4

205

1 2

DD4

AR3

AA4

TP26

TP5

100R

3 4

5 6

7 8

46

D_A1049D_A1150D_A1251D_A1352D_A1453D_A1554D_A1655D_A1756D_A1857D_A1958D_CS030D_CS1

D_D5

D_D6

D_D71D_D82D_D93D_D104D_D115D_D126D_D137D_D148D_D1511P04/D2671P05/D2772P06/D2873P07/D2974P08/D3075P09/D31

206

207

3 4

5 6

7 8

1 2

3 4

5 6

7 8

1 2

3 4

5 6

7 8

DD5

DD6

DD7

DD8

DD9

DD10

DD11

DD12

DD13

DD14

DD15

AR1

AR2

100R*4

AA15

AA14

AA13

AA12

AA11

AA10

AA9

AA8

AA7

AA6

AA5

TP24

TP25

TP6

TP7

TP21

TP22

TP23

26

21

TP8

TP15

TP16

TP17

TP18

TP19

TP20

A1023A1125A124A1328A1429A153A162A1730A18

WE31OE24CE

22

TP9

TP10

TP11

D7

R91

10K

D7

+5VD

117

118

121

122

123

111

112

113

A_D4

A_D5

A_A4

A_A5

178

160

159

AA4

AA5

AA6

+5VD

124

114

115

116

A_D6

A_D7

A_D8

A_D9

A_D10

A_D11

A_D12

A_D13

A_D14

A_A6

A_A7

A_A8

A_A9

A_A10

A_A11

A_A12

A_A13

A_A14

158

151

152

153

154

155

156

162

163

AA7

AA8

AA9

AA10

AA11

AA12

AA13

AA14

AA15

AA10

AA11

AA12

AA13

AA15

AA14

R76

10K

AR7

4K7*4

1 2

3 4

5 6

7 8

+5VD

C67

C53

DGND

19 18

C68

C56

DD15

41

AA16

TP14

R90

A_D15

A_A15

164

AA16

3 4

84

100N

10U

100N

10U

C84

100U

C83

100N

TP32

C91

100N

DGND

24LC256-I/SN

DGND DGND

INTER2

127

128

129

INT0

INT1

INT2

INT3

IC4C

MC33078

IC5C

MC33078

IC6C

MC33078

IC7C

MC33078

IC8C

MC33078

R64

10K0

R66

R24

3K90

R58

2K20

R60

2K20

C55

10U

IC12A

IC17B

EN29F040

RED208

C

-12V

R5

10K

DGND

C5

10U

7

C36

22P

6

DGND

4K70

R61

10K0

1

C34

680P

2

R59

C33

2N2

R57

C54

22

AOUTL-

MCLK3PDN4BICK5SDATA6LRCK7SMUTE8DFS9DEM010DEM111DIF012DIF113DIF214CKS026CKS127CKS228P/S

DATA OUT1

RST

R25

IC8B

MC33078

5

R62

82K0

DGND

IC8A

MC33078

R29

3

2K20

C35

680P

DGND DGND

R55

3K90

2K20

10U

20

23

AOUTR-

AOUTL+

+5VD

DATA OUT1

AR8

7 8

21

CK256FS

P12/BIR083P13/BIR184P14/BIR285P15/BIR386P16/BIR487P17/BIR588P18/BIR689P19/BIR790P20/BIR891MD0_O64MD0_I59MD1_O65MD1_I60MD2_O66MD2_I61P25/SDI98P26/SDO99P27/SCK

IC18C

D4 LCD

D5 LCD

IC16D

IC16C

74HC04

89

1011 IC16E

5 6

Ro

IC21A

6

1234567

CN3

C6

10K0

C19

22P

R23

4K70

R27

C20

680P

3K90

R28

2K20

R67

2K20

C58

10U

21

AOUTR+

25

DATA OUT2

DATA OUT3

BCLK

1 2

3 4

5 6

DAC012DAC113DAC214DAC315DAC416DAC5

E LCD

D6 LCD

D7 LCD

R/W LCD

IC16F

74HC04

1213

312Re

Di

De

7 4

RXP

RXN

2

6

C21

(3.072MHZ)

DGND

B

1 2

3 4

5 6

7 8

9 10

11 12

13 14

CN1

10U

1

3

DGND

10K0

7

5

R30

2K20

2N2

R63

2K20

C57

10U

AK4393VF

DGND

100R*4

17

20

RS LCD

TRANSCEIVER

A28b-14B

DGND DGND

R6

10K

DGND

IC4A

MC33078

R26

82K0

DGND

IC4B

MC33078

C22

680P

DGND DGND

R65

3K90

DATA OUT2

(48KHZ)

DIGIT IN

LRCK

D2 LCD

D3 LCD

+5VD

18

176

196

197

198

22

BB_LE

CK64FS

MAX485EESA

MUTE

8

199

194

81

19

BB_LA

FSYNC_I

P11/CK3282P10/CK32

FSYNC_O

A28b-8B

ADC0

ADC1

SD IN

PWM LCD

12

AR14A 470R78AR11D 470R34AR11B 470R

CN5

470R

R104

SD IN

186

187

188

189

195

ADC2

ADC3

MOD0

MOD1

MOD2

M4_LA

M4_WS

P21/AD094P22/AD195ADCIN

TESTE

100

149

183

DGND

SD OUT

SD CLK1 2

1213

1011

IC22E

74HC14

33K

R101

R102

D2 LCD

D0 LCD

SD OUT

STB SWT

AR12A 470R

AR12C 470R

1 2

5 6

3 4

5 6

7 8

9 10

11 12

13 14

78

AR11A 470R

AR11C 470R

AR12D 470R34AR12B 470R

1 2

5 6

SD CLK

D1 LCD

D3 LCD

STB LED

101

190

191

192

193

MOD3

MOD4

MOD5

MOD6

MOD7

REFCLK

REFOUT

RST29XTIN24XTOUT

25

177

173

R79

150R

3 4

1 2

IC16A 74HC04D

IC22F

74HC14

C115

100N

C116

100N

E LCDR/W LCD

D4 LCD

D6 LCD

78

AR13D 470R34AR13B 470R78AR14D 470R34AR14B 470R

15 16

17 18

19 20

A28b-20B

AR13A 470R

AR13C 470R

AR14C 470R

1 2

5 6

D5 LCD

D7 LCD

RST

SYSCLK

12.288MHZ

+5VD

STB LED

STB SWT

IC15B

74HC74D

102

P28/STB0

P29/STB1

IC15A

74HC74D

RED208

2

+5VD

R82

150R

R77

100R

IC16B

74HC04D

R81

220R

R80

47K

XT1

24.576MHZ

DGND DGND

D9

RS LCD

DGND

12

R78

Q5Q

SD4CD

15P

C96

15P

C94

IC22D

IC22C

RLS4148

R98

330R

+5VD

IC20

Q9Q

SD10CD

CLK11D

220R

6

CLK3D

DGND DGND

R100

100R

74HC14DT

R97

100K

2

VCC

NC

MAX709L-CSA

1

89

5 6

3 4

1 2

7

8

3

RST

NC4NC5NC

DATA OUT3

RST

LRCK

13

DGND

1

DGND+5VD

C101

100N

C110

100N

C92

100N

C89

100N

C93

100N

C103

100N

DGND

1U

C107

100N

C112

C108

100N

C111

100N

C109

100N

C106

100N

IC22B

74HC14DT

C102

100N

C97

100N

IC22A

74HC14DT

R99

10K

IC18D

8

NC

GND

6

MMS-REDLG

DGND DGND DGND

DIGIT IN

184185

200208

172174

157161

137138

IC18E

119120

MMS-REDLG

107108

9293

7879

6263

4748

3738

2326

910

C100

C98

147148

175

27 28

76 77

130 131

COLLEGARE TRA

DGND

10U

100N

A

3

2

IC1A

MC33078

1

5

6

7

IC1B

C9

10U

C10

R31

22R

R32

C59

10N

4

5

AINL-

AINL+

RST10MCLK17SCLK14LRCK13SDATA15FSYNC16SMODE112SMODE211DFS18HPFE19TEST20ZCAL6CAL

IC9A

SYSCLK

RST

BCLK

LRCK

+5VD

PIN 147 E 148

141142

C105

143145

144

146

+5VD +5VD

C99

2

1

MC33078

10U

C23

10U

22R

R68

22R

24

+5VD

147

IC22G

147

IC16G

147

IC15C

85

IC21B

2142

6

IC13B

1

IC18G

RED208

C104

100N

10U

R83

100R

R84

100R

IC18F

RED208

100N

3

AINR-

74HC14

74HC04

74HC74

MAX485EESA

HM5118160

150

IC5A

MC33078

5

6

IC5B

7

MC33078

10U

C24

R69

22R

C62

10N

25

AINR+

AK5383VS

9

DGND

C113

100N

C95

100N

C88

100N

C114

100N

C85

100N

37

22

10U

C81

C82

100N

DGND

DGND DGND DGND DGND DGND DGND DGND

1 2 3 4 5 6 78

D

C

B

A

- 4 -

4

321

+5VD

C14

SD_OUT

QS'

10

QS

9

11

+5VD +5VD

IC6A

AR1

78 56 34 12

4K7*4

C4

10U

104P

D

IC3A

HCF4094

6

CN3

R6

10K

R31

10K

7

QH9QH

74HC165D

A11B12C13D14E3F4G5H

C15

220U

R8

1K

R13

3K9

C

D

2

CP

3

STR

1

EO

D04D15D26D37D414D513D612D7

EDIT

PRESET

UTILITY

DELAY

15

R25

1K2

12345

CON6

DL45 RED

15

1

2

10

CI

CK

S/L

SIN

6

78

+5VD

56 34 12 78 56 34 12

SW10

SW9

SW8

SW6

GIU

MUTE1

MUTE2

ESC

IC1D

74HC14D

89

IC1C

74HC14D

IC1A

74HC14D

1 2

5 6

QS'

10

9

R26

1K2

R37

QS

11

1K2

IC5A

HCF4094

R63

1K2

R60

MUTE2

DL21

QH9QH

IC2A

74HC165D

A11B12C13D14E3F4G5H

4K7*4

SW5

-24dB

OUT1

7

DL16

MODE

B

15

2

CI

MUTE1

DL46 RED

AR2

AR3

-24dB

SU

IC1B

IC4B

74HC14D

74HC04D

SW7

30P-ENCODER

+5VD

3 4

1K2

CK

SW3

ENTER

D

2

CP

3

STR

1

EO

1K2

DL26

15

+5VD +5VD

-24dBOUT2

R7

10K

IC4A

74HC04D

IC4C

74HC04D

10K

R24

R3

5K6

D04D15D26D37D414D513D612D7

R67

-24dBA

DL11

1

10

S/L

SIN

6

SW2

SW1

PAG UP

PAG DW

+5VD

B

4148

100K

+5VD

5K6

C8

C9

IC4E

IC4D

OUT EN

C17

R19

R14

47P

CLOCK1

1011

74HC04D

89

74HC04D

R1

C1

R2

C2

10U

10K

5K6

103P

5K6

103P

R10 10R

D1

R23

1 2

5 6

R5

R11 10R

CLOCK

1213

Display Board

C16

C7

C10

IC4F

R17 10R

MAXIQFP2.SCH

47P

+5VD

STROBE LED

47P

74HC04D

A

CN4

2P2.5

1

2

C18

10U

147

168

IC1G

74HC14D

C3

104P

IC2B

74HC165D

C5

104P

IC6B

74HC165D

C13

104P

IC5B

HCF4094

C12

104P

TO DISPLAY

123456789

CN1

CN2*4-2

R12 10R

R15 10R

IC1F

74HC14D

12 13

1011121314

D

CN2

CN2*10

TO CPU

123456789

C

1011121314151617181920

IC1E

10 11

74HC14D

B

R16 10R

168

147

A

IC3B

HCF4094

C6

IC4G

C11

1 2 34

104P

74HC04D

104P

- 5 -