Alto TOPVERB Schematic
Service Manual
Model: TOPVERB
www.altoproaudio.com
Version: 1.1
CONTENTS
1. Specification
2. Block Diagram
3. Schematic Diagram
4. Printed Circuit Board
5. Wiring Diagram
6. Test Procedure
7. Electrical Parts List
8. Exploded Views & Mechanical Parts List
9. Notes
1. Specifications
01_1
Electrical
Input
A/D - D/A
Conversions
Output
Frequency Response:
S/N Ratio (process)
S/N Ratio (bypass)
THD+Noise:
Number of Channels:
Format:
Maximum Level (bypass):
Impedance:
A/D converter:
D/A converter:
Number of Channels:
Format:
Maximum Level (bypass):
Output Impedance:
+0.5 / -1.5 dB from 20Hz to 20 kHz
80 dB "A" wtg, 20 Hz-22kHz
>90 dB "A" wtg, 20 Hz-22kHz
<0.008% @ 1kHz (0dBV, bypass)
2
1/4" unbalanced
+9 dBu
>500 Kohms
1 bit Sigma-Delta
1 bit Sigma-Delta
2
1/4" unbalanced
+9 dBu
<500 ohms
Front Panel
Rear Panel
Processing and
Memory
Physical
Controls
Indicators
Input (LEFT/MONO, RIGHT)
Output (LEFT, RIGHT)
BYPASS
Power
Processor Speed:
Internal DSP resolution:
Main Preset Programs
Preset Total Combinations
Internal digital audio memory:
Net Weight:
IN/OUT levels (ANALOG)
PROGRAM selections (2 knobs)
Power, Signal clip LED
1/4" 2-conductor (mono)
1/4" 2-conductor (mono)
1/4" 2-conductor (auto-sense pedal type)
for momentary footswitches
9 Volt AC Power Transformer
12 MIPs (million instructions per second)
52 bit MPY accumulator
16
256
3000 milliseconds
0.57kg(1.26lb)
Dimension:
175(W) 130(D) 42(H)mm
(6.89" 5.12" 1.65")
ain
02_1
Output
L OUTPUT
R OUTPUT
ain
Output
SINGAL
LED
MIX
Distortion
detect
LIN LOUT
MUTE
CHEF
RIN ROUT
Input gain
MIX
Input gain
BYPASS
LIN
If only LIN
input :
1.LIN mono
2.RIN open
RIN
TOP Vevb.01 block diagram:
C20
03_1
UDASP IN/OUT SECTION
100nF
U4C
U7E
C43
C40
U6G
U8B
MOD EL: ALTO TOP OVER B
LM393
4066
47uF/25V
10uF
74HC14
NE555
A
VER030828
21of
KEVIN LIN.
RevisionModel No:
Drawn By :
Sheet
ALTO TOPOVERB
IN/OUT SECTION
4-Aug-2004
TPverb-din.SCH
A2(C)
Titel
Size
File:
Date:
AGND
C21
100nF
-5V
AGND
AGND2
JP1
DGND
D
8
DGND
U6D
U6F
74HC14
74HC14
8 9
12 13
7654321
AR2
+5V
AR1
R14
MUTE1
R10
4066
12
4066
6
10K
C30
11 10
9 8
R9
1.5nF
C24
22P
R3
U7B
U7A
680R*4
680R*4
10K
10K
R8
10K
12
14
J
Q10Q
U5B
74HC109
COM
EN2
124
SDB161PVB15FS
123
7 8
5 6
3 4
1 2
COM
124
EN1
SDB161PVB15FS
123
7 8
5 6
3 4
1 2
CN2
HEADER 8X2
+5V
C33
33P
3
2
U3A
TL074CD
1
10K
5
6
U3B
7
R1
100R
C7
4.7uF
13
CLK
9
8
4
8
4
12345678910
AGND
AGND AGND
TL074CD
DGND
K
R
15
S
11
PRESETVARIATION
DGND DGND
1112
1314
1516
SGND
MUTE2
R25
4066
5
4066
13
10K
C32
1.5nF
4 3
C28
22P
1 2
U7C
U7D
C
(MUTE)
R35
47K
+5V
4
6
RS
TG2TH
DS
7
CTR
OUT
U8A
NE555
3
U6C
74HC14
5 6
U6B
74HC14
3 4
R27
10K
C34
33P
12
13
R24
10K
U3D
TL074CD
14
10K
R18
10
9
R6
10K
U3C
TL074CD
8
R2
100R
C23
4.7uF
5
AGND
C29
22P
R22
10K
C31
1.5nF
AGND AGND
C27
22P
R16
10K
DGND
C39
10uF
DGND
C35
100nF
14
R26
10K
13
8
R34
10K
9
10
R17
10K
R30
DGND
DGND
+5V
U2D
TL074CD
12
AGNDAGND
R21
10K
U2C
TL074CD
B
PJ5
JY-6314-02-340
213
4
R43
R41
LM393
U4A
1
5
DGNDDGND
LM393
C42
C41
820K
220R
DGND
1uF
DGND
1uF
DGND
DGND
84
+5VA
147
R47
100R
+5V
C38
100nF
147
C37
100nF
168
U5C
74HC109
AGND
AGND
AGND
81
TPVERBIO.SCH
R42
10K
D5
RLS4148
2
J
Q6Q
74HC109
10K
2M2
R36
4K7
PEAK(FLICKER)
12
4
CLK
D4
5
7
R37
3
220R
U6A
74HC14
3
K
R
S
7
R28
10K
BR
TR1
RLS4148D7RLS4148
6
U4B
1K
2
1
D6
RLS4148
+5V
R33
R32
10K
+5V
U5A
R31
10K
10K
R46
R44
R40
7K5
470R
MUTE2
D1
470R
R29
TR2
BR
R45
470R
MUTE1
RLS4148
R39
R38
1M
C36
100nF
LD1
RED
+5VA
MUTE(GLOW)
INPUTL
OUTPUTL
D
OUTPUTR
C
INPUTR
B
A
1 2 3 4 5 6 78
D
03_2
C
B
A
R-OUT
PJ3
4
L1
BLM21A102
R20
270R
U2A
TL074CD
2
VR3A
A10K
OUTPUT-A
R11
10K
321
2
VR2A
3
MIXER-A
B1K
213
4
1
3
1
C14
AGND
JY-6314-02-340
10nF
AGND2
AGND
C48
47P
U2B
TL074CD
VR3B
A10K
OUTPUT-B
R19
10K
5
VR2B
6
L6
R23
PJ4
BLM21A102
270R
6
B1K
MIXER-B
L-OUT
213
4
7
5
4
C26
JY-6314-02-340
10nF
AGND
VERB030828
22of
KEVIN LIN.
RevisionMode l No:
AGND2
AGND
C45
100nF
411
U3E
C51
AGND
100nF
Drawn By:
Sheet
TL074CD
C50
C19
AGND
100nF
-5V
AGND
100nF
-5V -5V
MODEL:ALTO TOPOVERB
C44
100nF
C49
47P
411
+5VA
+5VA +5VA
L7
BLM21A102
+5V
U2E
TL074CD
C18
100nF
411
U1E
TL074CD
-5VSGND
ALTO TOPOVERB
Analog Stage/Power Suppl y
4-Aug- 2004
TPverbIO.Sch
A4
Titel
Size
File:
Date:
LD2
4K7
100nF
RX110
RED
SGND
C6
0.1UF
C4
100uF/16V
C2
0.1UF
SGND
SGND SGND SGND SGND
C11
220uF/25V
P1
STARTGND
SGND
AGND2AGND
SGND
L8
BLM21A102
L12
1 2 3 4
BLM21A102
SGND
C1
0.1UF
6 1
L3
SGNDSGNDSGND
SGND
D3
PLT09H- 2003R
LF22uH
-5VO
U9 LM7905
1N4002
R48
C22
PS1
L2
INPUT R
R5
AGND
1M
C8
47uF/25V
C46
47P
OUTPUTL
VR1B
U1D
A10K
R15
C17
TL074CD
INTPUT-B
10K
47uF/25V
13
14
C16
7
U1B
TL074CD
5
6
AGND
R12
1K
C25
AGNDAGND2
L5
C13
U1C
TL074CD
INTPUT-A
A10K
R7
10K
1
TL074CD
3
R4
1K
47uF/25V
8
9
10
C12
47uF/25V
AS2
2
C9
220P
OUTPUTR
VR1A
U1A
L4
12
47uF/25V
AS1
220P
R13
AGND
1M
INPUT L
C15
C47
47P
47uF/25V
C5
LF22uH
0.1UF
C3
100uF/16V
U10 LM7805
+VCC
C10
1000uF/25V
(C10=φ10*20mm)
D2
1N4002
AGND
AGNDAGND2
34 L10
BLM21A102
BLM21A102
213
4
213
4
PJ1
JY-6314-02-340
R-INPUT
D
PJ2
JY-6314-02-340
L-INPUT
(MONO IN)
C
AC 9V INPUT
B
J1
L11
BLM21A102
DGND
A
04_1
PCB : TOPVERB-N2 Top overlay
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