Alto PBM4D SISTEMA Schematic

MODEL: PBM4D SISTEMA

www.altoproaudio.com

Version 1.0

CONTENT

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

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

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

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

5. Wiring Diagram…………………….…………………..…...….…….……...5

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

7. Exploded View & Mechanical Parts List…………….…….…….……….9

8. BOM…………………………………………………….…...…..….……….…13

1.Introduction

- 1 -

The PBM4D SISTEMA is designed for professional application. It provides the following

features:

● Digital amplifier technology, offering high power and a very dynamic sound

● 3-band EQ for MAIN POWER OUT

● 3 MIC/line input channels with balanced XLR and TRS inputs

● Ultra-low noise discrete MIC pre -amps with +15V phantom power

● 2-band EQ on each input channel

● Each input channel with level control and DSP/FX AUX1 POST control

● Tape in/out

● 16 positions digital signal processor

● POWER OUTPUT: 80Wrms.(load.8Ohm)

● 100 muti -effects ＆ EQ and lots great function

It is easy to be carried to everywhere by its smart design.

Input channels

2. Technical Specifiation

- 2 -

Impedances

Equalization

DSP Section

Main Mix Section

Amplifier Section

Power supply

Physical

Microphone Input

Frequency response

Distortion(THD&N)
Gain
SNR(Signal to Noise Ratio)
Line input
Frequency response

Distortion(THD&N)
Gain

Microphone Input

Channel Insert return
All other inputs
Tape out
All other outputs
Hi shelving
Low shelving

A/D and D/A converters
DSP resolution

Type of effects

Presets
Controls

Noise(Bus noise)

M max outONITOR
FX Sends max out
Output Power 80W RMS (Nominal power)
Frequency Response
Output Impedance
Main voltage

Power Consumption
Fuse

Dimensions 216.5x143.5 152.5mm(L W H)(8.5" 5.6" 6")xxxxx
Net Weight
Shipping Weight

Volume 2.81CFT

Electronically balanced, discrete input configuration

10Hz to 55kHz, +/- 3dB

0.05% at +4dBu, 1kHz

30dB
>94dB
Electronically balanced

10Hz to 55kHz, +/- 3dB

0.05% at +4dBu, 1kHz
10dB

1.4kOhm

2.5kOhm
10kOhm or greater

1kOhm
120Ohm

+/-15dB@12kHz
+/-15dB@80Hz
24bit
24bit

HALL, ROOM, VOCAL, PLATE

REV+DELAY, and REV+CHORUS combinations

16
16-position PRESET selector

CLIP LED
MUTE SWITCH with LED indicator
Fader 0 dB, channels muted: -85dBr (ref.: +4dBu)
Fader 0 dB, all input channels assigned and set to
UNITY gain: -81dBr(ref.: +4dBu)

+22dBu unbalanced, 1/4"jacks
+22dBu

25HZ-20KHZ
8 ohm
USA/Canada 100 120V~, 60Hz
Europe 210 240V~, 50Hz
U.K./Australia 240V~, 50Hz
133 watts
100-120V~: T4A
21 T2A0-240V~:

12.6kg

14.45 kg

, STEREO DELAY

D

3. Block Diagram

- 3 -

C

B

A

8

OUTPUT

AUX SEND2

R

T

S

1

S

2

R

T

S

TAP E OU T

2-TRACK

OUT

MONITOR

R

T

S

8

TAP E IN

AMPLIFIER

DIAGRAM

7

PBM4D -MX

7

POWER

BLOCK

ALTO

6

5

)

4POINT
(

MAIN L EVEL

HI

EQ

MID

LOW

3-BAND

2TK IN

LEVEL

6

MONITOR L EVEL

5

RET

AUX/DFX

T

TN

MAIN BUS

DFX (DSP)

4

MAIN BUS

3

DSP BOARD

2

S

MUTE

PRESETS

DSP FOOTSW ITCH

1

DFX SEND

DFX(DSP)

4

3

2

1

MAIN-BUSMAIN BUS

[-10dB]

HA

HI

LOW

[10dB]

ON

OFF

213

M

+15V

PHANTO

LOW-Z

HI-Z

[-40/-20dB]

[-30/-10dB]

(CH1-3)

CH INPUT

[0dB]

LEVEL

EQ

2-STAGE

MAIN BUS

[-6dB]

DFX SEND

RN

R

3c5e1a4d2b

FX RETURN

D

C

B

A

R61KR2

4. Schematic Diagram

- 4 -

A

20K

OUT2

SP2

GND

SP2

SPEAKER

35V

2N5551

C10

34.9V

R4

100NF

47UF/25V

R13

34.7V

1K

R1

OUT1

SP1

SP1

B

47K

C19

330UF/16V

D2

IN4737D1IN4737

R19

61.9K

20K

GND

SPEAKER

INPUT+

INPUT-

-15V

GND

+15V

GND

SP2

OUT2

SP1

OUT1

10

CN2

GND

27V

27V

U2

LM3886

123456789

CON10

PC250

PC250

PC250

3.48K

R18

3.48K

R16

NC
+VIN

-VIN
MUTE
GND
NC
V+
V­OUT
NC
V+

35V

C14

20V

11

10
9
8
7
6
5
4
3
2
1

100UF/50V

GND

R7

2.2K

R7

C4

100NF

C3

C7

100NF

100UF/50V

100UF/50V

2.2K

C12

100NF

C11

47UF/25V

GND

C17

100NF

2.6V

-VA

C8

D

654321

GND

C41

470UF/35V

C31

GND

C37

1000UF/35V

C35

6800UF/50V

D4

BU10--04

470UF/35V

3

OUT

GND

1

2

IN

2

R9

C30

1000UF/35V

C13

6800UF/50V

IN4004

3

-15V

D3

IN4004

U3

7915

200O

-VA

+15V

3

Vout

D6

IN4004

Vin

U6

7815

1

R3

95O

+VA

D5

IN4004

2

BR

1

4

C36

0.1UF/275V

C

INPUT-

INPUT+

GND

C20

1UF/50V

R8

100

C18

47UF/50V

GND

R15

C2

C1

C6

C5

61.9K

100NF

100UF/50V

100NF

100UF/50V

Q1

C9

GND

R5

2.2K
C15

100NF

2.6V

NC

11

+VIN

10

-VIN
9

MUTE

8

GND

7

NC

6

V+

5

V-

U1

4

LM3886

OUT

3

NC

2

V+

1

-VA

GND

+VA+VA

GND

T1

S1

SW SPST

D

AC

LAMP NEON

TRANS5

F?

FUSE1

GND

1 2 3 4 5 6

C

B

A

D

5. Wiring Diagram

- 5 -

6

5432

C

B

A

PBM4D SISTEMA

MX

IN/OUT

功放模組

2

D1

BRIDGE1

1

T1

F1

FUSE1

S1

SW-SPST

3

4

TRANS4

AC 230V

1

1 2 3 4 5 6

D

C

B

A