Trinity Amps TC15 Manual de usuario

The Trinity Amps

TC15

Amp Builder's Guide

February 2021, Version 21.2

For the sole personal use of Trinity Amps Customers.

Parts © Trinity Amps 2005 - 2021

www.trinityamps.com

Table of Contents 
 
Thank You! .......................................................................................................................................................5 
Introduction......................................................................................................................................................7 
Acknowledgements ........................................................................................................................................7 
WARNING .......................................................................................................................................................8 
Version Control................................................................................................................................................9 
Builders Guide General Theory............................................................................................................... 10 
Building an Amp .......................................................................................................................................... 11 
Introduction...................................................................................................................................................11 
Switches and wire..........................................................................................................................................11 
Physical layout ...............................................................................................................................................11 
Grounding......................................................................................................................................................11 
Insulated jacks ...............................................................................................................................................12 
Minimizing transformer interference......................................................................................................... 12 
Wiring .............................................................................................................................................................12 
Assembling the amp.................................................................................................................................... 12 
Before You Begin ......................................................................................................................................... 12 
Tools ...............................................................................................................................................................12 
Soldering.........................................................................................................................................................13 
Tube Pin Numbering ...................................................................................................................................13 
Tube Designations........................................................................................................................................ 14 
Grounding Scheme............................................................................................................................... 15 
Assembly Steps Summary.......................................................................................................................... 15 
1. Install the Hardware ...........................................................................................................................16 
Tube Sockets.......................................................................................................................................... 18 
Can Capacitor ........................................................................................................................................ 18 
Grommets .............................................................................................................................................. 18 
Front Panel............................................................................................................................................. 18 
Terminal Strips ...................................................................................................................................... 18 
Ground Lugs.......................................................................................................................................... 19 
Output Jacks .......................................................................................................................................... 20 
IEC Mains Socket ................................................................................................................................. 20 
Fuse Holder ........................................................................................................................................... 20 
2. Heater Wiring ......................................................................................................................................21 
Heater Wires .......................................................................................................................................... 21 
3. Install Transformers ...........................................................................................................................22 
4. Wire the Power Supply ......................................................................................................................22 
120V MAINS......................................................................................................................................... 25 
240V MAINS......................................................................................................................................... 26 
Wiring the Rectifier............................................................................................................................... 27 
Test the Power Supply ......................................................................................................................... 29 
5. Assemble the Turret Board ...............................................................................................................30 
Install Components on Turret Board................................................................................................ 30 
Install the Turret Board ....................................................................................................................... 33 
6. Connecting the Turret Board............................................................................................................34 
Tube Sockets.......................................................................................................................................... 34 
Socket Mounted Resistors................................................................................................................... 36 
Phase Inverter Socket........................................................................................................................... 36 
Power Tube Wiring and Screen Resistor .......................................................................................... 36 

 
Trinity Amps TC15 Builder’s Guide.  Version 21.1 Page - 4 
 
Connecting Controls - Potentiometers.............................................................................................. 37 
TC15 Tone Contour Wiring................................................................................................................ 38 
Master Volume Switch –Master Cut................................................................................................. 40 
7. Output –Transformer, Impedance Switch, Jacks .........................................................................40 
Crunch - Munch Switch....................................................................................................................... 40 
Connecting the Impedance Selector .................................................................................................. 42 
Output Jacks .......................................................................................................................................... 44 
8. Input - Jacks and Input Grid Resistors ...........................................................................................45 
Input Grid Resistors............................................................................................................................. 45 
Input Jacks ............................................................................................................................................. 45 
Combo Chassis Cliff Jack Wiring....................................................................................................... 46 
Preparing Co-Axial Wire...................................................................................................................... 47 
Final checkout............................................................................................................................................... 48 
Power Up ........................................................................................................................................................ 49 
Working Inside a Tube Amplifier Safely...................................................................................................49 
Unplug .................................................................................................................................................... 49 
Sit............................................................................................................................................................. 49 
Drain ....................................................................................................................................................... 49 
Test.......................................................................................................................................................... 49 
Close........................................................................................................................................................ 49 
Making a Voltage Measurement ................................................................................................................. 50 
Trinity TC15 Voltages (Black Turret Board)....................................................................................... 52 
WARNING .................................................................................................................................................... 53 
Read this Information Carefully......................................................................................................... 53 
Builders Guide General Troubleshooting ............................................................................................ 53 
TC15 Tone Tweaking ................................................................................................................................. 53 
Tube Substitutions ...................................................................................................................................... 57 
How to read Resistor Color Codes ......................................................................................................... 58 
How to Read Capacitor Codes ................................................................................................................ 59 
FAQ.................................................................................................................................................................. 61 
Cliff Jacks Explained................................................................................................................................... 64 
TC15 - BILL OF MATERIALS (BOM)................................................................................................ 65 
TC15 –POWER TRANSFORMER SCHEMATICS ....................................................................... 68 
Trinity Amps Schematics and Layouts ................................................................................................. 70 
 

Thank You!

Thank you for purchasing your kit from Trinity Amps. We truly hope that you enjoy building it. If

you have any questions please do not hesitate to contact us.

We are always looking for feedback form our Customers on our products. We have checked the

build instructions over thoroughly and are confident in our product. However, mistakes do happen

so our advice is that as you connect each wire and part according to the layout, cross-check against

the schematic. If you find any inconsistencies, or have any concerns, please let us know. Do not

hesitate to contact us! We want this build to be successful for you and for Trinity Amps!

Please check over your parts carefully and the Bill of Materials and notify us of anything that does

not seem correct.

We’re confident that you will like our product and our support and when you’re completed, we’d

appreciate your comments posted on any of the internet forums such as thegearpage.net,

18watt.com, AX84.com or trinityamps.com. You will find some extra business cards in the package.

Please keep one and pass the rest around.

We know you have a choice in suppliers and we do appreciate your business.

Have Fun!!

Cheers,

Stephen Cohrs,

Trinity Amps

Web site: www.trinityamps.com

email: [email protected]

Introduction

This guide has been prepared for builders of Trinity Amps Kits. It is always being improved and we

would appreciate your feedback and comments to: [email protected]

Accordingly, content and specifications are subject to change without notice.

We do try to make it as accurate as possible, but it is sometimes hard to keep up with the changes.

Therefore, if you do find an error, please let us know about it and we will correct it. Suggestions are

welcome so if you have one, please get in touch with us.

Sources of help.

Forums: Please use the various forums to get help. They are an excellent resource and can be found at

trinityamps.com, AX84.com, the Gear Page etc..

Color assembly pictures and the latest drawings, tips, techniques are all in the Trinity Amps Forum, in

the Resources Forum.

Email: We can’t help with every problem but if you can not get your problem resolved, email us and

we’ll do our best to help.

Phone Call: If your problem can’t be solved, email for a phone appointment.

Acknowledgements

Much of the content in this document is original. Rather than reinvent content, some parts are based

on content from other excellent sources and are hereby acknowledged.

R.G. Keen’s site www.geofex.com - Tube Amp FAQ, Tube Amp Debugging

AX84.com site www.AX84.com - Gary Anwyl's P1 construction guide version 1.0

GM Arts website http://users.chariot.net.au/~gmarts/index.html - Guitar Amp Basics

www.18watt.com - website for various content and diagrams –Richie TMB

Aron from diystompboxes.com

Parts © Trinity Amps. No part of this document may be copied or reprinted without written

permission of Trinity Amps or contributing authors listed above.

Trinity Amps TC15 Builder’s Guide. Version 3.5 Page - 8

WARNING

Please Read this Information Carefully

The projects described in these pages utilize POTENTIALLY FATAL HIGH VOLTAGES. If you

are in any way unfamiliar with high voltage circuits or are uncomfortable working around high voltages,

PLEASE DO NOT RISK YOUR LIFE BY BUILDING THEM.Seek help from a competent

technician before building any unfamiliar electronics circuit. While efforts are made to ensure accuracy

of these circuits, no guarantee is provided, of any kind!

USE AT YOUR OWN RISK: TRINITY AMPS EXPRESSLY DISCLAIMS ALL LIABILITY FOR

INJURY OR PROPERTY DAMAGE RESULTING FROM THIS INFORMATION! ALL

INFORMATION IS PROVIDED 'AS-IS' AND WITHOUT WARRANTY OF ANY KIND.

REMEMBER: NEVER OPERATE YOUR AMP WITHOUT A LOAD. YOU WILL RUIN YOUR

OUTPUT TRASNFORMER!

Trinity Amps TC15 Builder’s Guide. Version 3.5 Page - 9

Version Control

Version

Date

Change

2.0

8Dec 12

New issue for New board & layout

2.01

23Jan 13

Changed qty of 100K & 220 K resistors to match layout

2.02

30Jan 13

Voltage Table updated

2.03

30Jun13

Changed output jacks to Switchcraft type in BOM

2.04

3Feb14

Updated BOM

2.1

29Jun14

Updated methods to connect turrets to controls & sockets, ROHS Note

added

2.2

15Sep14

Added TC15 Tone Contour Wiring

2.3

28Jan15

Updated BOM; added compression tweak for EF86 Channel; added Input

jack theory

2.4

23Feb15

Updated EF86 pin out diagram

2.5

23Dec15

Updated Connecting the Impedance Selector

2.6

11Apr16

Updated BOM added .0047uf cap

2.7

3May16

Clarified Tone Contour Switch Set-Up

2.8

6May16

Clarified & Numbered Steps in Making a Voltage Measurement

3.0

2Jul18

Updated for new Power Transformers

3.1

13Nov18

Updated BOM and diagrams 120R 5W -> 150R 5W (A. Lathrop); Updated

new Power Transformer Primary wiring.

3.2

13May19

Updated BOM

3.3

26Jun19

240V PT layout corrected for indicator lamp (O. Ziv)

3.4

11Feb20

Updated BOM

21.1

24Feb21

`Updated Version

21.2

8Mar21

Corrected Rectifier wiring colours

Trinity Amps TC15 Builder’s Guide. Version 3.5 Page - 10

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