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Manuals and User Guides for AkitikA GT-102. We have
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AkitikA GT-102 manual available for free PDF download: Assembly Manual
AkitikA GT-102 Assembly Manual (52 pages)
STEREO AUDIO POWER AMPLIFIER
Brand:
AkitikA
| Category:
Amplifier
| Size: 17 MB
Table of Contents
Table of Contents
2
Table of Figures
3
Section 1: about this Manual
5
Who Should Attempt this Project
5
Tools You'll Need
5
Project Overview
5
Important Safety Notes
6
About Components
6
Recommended Solder
6
Warranty
6
Section 2: Building the Power Supply PCB
7
Component Order
7
Install the Resistors
7
Figure 1-Component Side of Power Supply PCB before Loading
7
Figure 2-Installing Resistors
8
Install the Diodes
9
Identifying the Glass Body Diodes
9
Figure 3-R11 Location (Pcb's Are Missing the Silk Screen for R11)
9
Install the Last Resistor
11
Install the Small Capacitors
11
Figure 4-Form the Cathodes of D4-D7 as Shown (Banded End Denotes Cathode)
11
Install the Integrated Circuits
12
Install the Transistors
12
Install the Big Capacitors
12
Figure 5-Pinout of U1, Viewed from the Top
12
Final Inspection of the Circuit Board
13
Power Supply Final Assembly
13
Figure 6-Note the Rounded Brackets Used for the Power Supply Heatsink and PCB
13
Figure 7-Placing Thermal Compound on Q5
14
Figure 8-Installing Q5 on the Heatsink and to the PCB
14
Figure 9-Remember to Solder Q5'S Leads
14
Figure 10-Assembled Power Supply Mounted on Heat Sink
15
Section 3: Assembling the Amplifier Circuit Boards
16
Figure 11-Component Location Guide for Amplifier Pcb's
16
Figure 12-Empty the Amplifier Components into a Soup Bowl
16
Figure 13-Close-Up of Amplifier Board Prior to U1, K1, and L1 Installation
17
Install the Resistors
17
Figure 14-Four of the same Value Resistors Are Installed, Leads Bent on the Back Side, then Soldered and Clipped
18
Install the Small Capacitors and the Diodes
19
Figure 15-Showing LED Cathode Orientation
20
Last Capacitors and the Transistors
20
Figure 16-Starting to Wind the Output Inductor
22
Winding the Output Inductor
22
Figure 17-Finishing Step for the Output Inductor
23
Final Inspection of the Circuit Board
23
Install Relay K1
23
Figure 18-Mounting Assembled PCB to Heat Sink
24
Figure 19-Mounting the PCB to the Heat Sink
24
Install the LM3866 and Mount the Amplifier Board to the Heatsink
24
Figure 20-Spread a Thin Film of Thermal Compound on the LM3886, but Keep It off the Leads
25
Figure 21-A Completed Amplifier Module
25
Section 4: Wiring It All Together
26
Attach the Power Supply Ground Wire
26
Attach the Amplifier Module Wires
26
Attaching LEFT Module Wires
26
Figure 22-From Left to Right, #6 Lug, #10 Lug, RCA Connector Ground Lug
26
Figure 23-Power Supply with Attached Ground Wire
26
Attaching RIGHT Module Wires
27
Figure 24-Shielded Cable for Left Channel. Right Channel Has Overall Length of 11 Inches
27
Build the Ground Harnesses
28
Figure 25-Channel Grounding Harness
28
Build the Ground Lifter
29
Figure 26-Ground Lifter PC Board
29
Figure 27-Ground Lifter PCB with Ground Wires Connected
29
Install the Feet
30
AC Power Wiring
30
Figure 28-Install the Feet here
30
Figure 29-FASTON Connector
30
Figure 30-Wiring IEC Power Connector Line and Neutral
30
Figure 31-Power Wiring with IEC Connector Installed into Chassis
31
Figure 32-Installing Power Wires on the Switch
32
Figure 33-Spread Thermal Compound on the ¼" Wide Edge
32
Installing Amplifier Modules into the Chassis
32
Install the Speaker Binding Posts
33
Figure 34-Installing RCA Jacks
33
Connect the Speaker Binding Posts
34
Figure 35-Install both Left and Right Binding Posts
34
Figure 36-I/O Connector Wiring
35
Figure 37-Wiring Toroidal Transformer for 120 Volt Operation
35
Transformer Preparation
35
Figure 38-Western Union Splice Has Diameter Less than the Insulated Wires and no Sharp
36
Points
36
Transformer Installation
37
Figure 39-Connecting up the Power Transformer
37
Testing the Power Supply
38
Figure 40-Showing Active and Storage Locations in the Fuse Drawer
38
Final Amplifier Wiring
39
Wiring Amplifier Power
39
Fasten the Power Supply to the Chassis
39
Install the Wall and Fasten the Transformer down
40
Figure 41-Grounding Stud Detail
40
Figure 42-Routing the Wires Thru the Slots in the Wall
40
Visual Inspection
41
Section 5: Testing It out and Installing the Top
41
Figure 43-Toroidal Transformer Mounting
41
Power-Off Tests
42
Power-On Tests
42
Install the Top
42
Section 6: Using the GT-102
42
Section 7: Specifications and Schematics
43
Figure 44-Power Supply Schematic
44
Figure 45-Amplifier Module Schematic
45
Figure 46-Overall Wiring (Power Transformer Is Wired for 120 VAC)
46
Section 8: Theory of Operation
47
Power Supply
47
Bulk DC Supply
47
Pass Transistor
47
Regulator Control Circuits and Their Power Supply
47
Current Limiting
47
Start-Up Circuits
48
Amplifier Modules
48
Reference Voltage Generator
49
Gain Setting Circuits
49
Relay Control Circuit
49
Appendix 1 - Resistor Color Code
50
Figure 47-Demonstrating the Resistor Color Code
50
Appendix 2 - Preparing a Shielded Cable End
51
Figure 48- Shield Wire End Prep Completed
52
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