Trinity Amps TriFly Bedienungsanleitung
TrinityAmps TriFly PCB Builders Guide v1.docx
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The Trinity Amps
TriFly
TriFlyTriFly
TriFly
PCB Builder's Guide
For the sole personal use of Trinity Amps Customers.
February 2017, Version 1.1
Parts © Trinity Amps 2005 2016
www.trinityamps.com
TrinityAmps TriFly PCB Builders Guide v1.docx
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TrinityAmps TriFly PCB Builders Guide v1.docx
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Table of Contents
Table of Contents ......................................................................................................................................................... 3
Introduction ................................................................................................................................................................... 6
Acknowledgements ....................................................................................................................................................... 6
WARNING ................................................................................................................................................................... 7
Please Read this Information Carefully ............................................................................................................. 7
Version Control ............................................................................................................................................................. 8
Product Overview and Specs ................................................................................................................................. 11
Guitar Amplifier Basics .............................................................................................................................................. 12
Distortion ................................................................................................................................................................. 13
General Amplifier Operation ................................................................................................................................ 15
Some DO NOTS .................................................................................................................................................... 15
Some DOs ................................................................................................................................................................ 15
Introduction to Vacuum Tubes and Common Terms .......................................................................................... 16
Introduction ............................................................................................................................................................. 19
Switches and wire .................................................................................................................................................... 19
Physical layout .......................................................................................................................................................... 19
Grounding ................................................................................................................................................................ 19
Insulated jacks .......................................................................................................................................................... 20
Minimizing transformer interference .................................................................................................................... 20
Wiring ........................................................................................................................................................................ 20
Assembling the amp ................................................................................................................................................... 21
Before You Begin .................................................................................................................................................... 21
Tools .......................................................................................................................................................................... 21
Soldering ................................................................................................................................................................... 21
Making a Voltage Measurement ............................................................................................................................ 22
Wiring ........................................................................................................................................................................ 23
Tube Pin Numbering .............................................................................................................................................. 23
Potentiometer Pin Numbering .............................................................................................................................. 23
Assembly Steps Summary .......................................................................................................................................... 24
1. Install Transformers ............................................................................................................................................... 24
2. Install IEC, Power Switch, Tube Sockets and Output Jacks ........................................................................... 25
3. Wire up and test the Power Transformer and Power Switch .......................................................................... 26
Grounding Scheme ................................................................................................................................................. 26
4. Build sub assemblies Volume Control and Input Jack ..................................................................................... 28
5. Build sub assembly Printer Circuit Board (PCB) ............................................................................................... 29
6. Install sub assembly PCB ...................................................................................................................................... 30
7. Install LED in V1 tube socket .............................................................................................................................. 31
8. Output Transformer Connection and Power Transformer Connection ....................................................... 31
9. Wire up the Heaters; Check Wiring ..................................................................................................................... 32
10. Start Up .................................................................................................................................................................. 34
Trinity TRIFLY Voltage Chart ................................................................................................................................. 36
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WARNING ................................................................................................................................................................. 36
Please Read this Information Carefully ........................................................................................................... 36
Troubleshooting .......................................................................................................................................................... 37
Hum ........................................................................................................................................................................... 37
Volume Test ............................................................................................................................................................. 37
Faulty tube ................................................................................................................................................................ 37
Severely unmatched output tubes in a push pull amplifier ............................................................................... 38
Faulty power supply filter caps .............................................................................................................................. 38
Faulty bias supply in fixed bias amplifiers ........................................................................................................... 39
Unbalanced or not ground referenced filament winding .................................................................................. 39
Defective input jack ................................................................................................................................................ 39
Poor AC grounding ................................................................................................................................................. 39
Induced hum ............................................................................................................................................................ 39
Poor internal wire routing ...................................................................................................................................... 39
Poor AC Chassis Ground at Power Transformer .............................................................................................. 40
Defective internal grounding ................................................................................................................................. 40
Hiss ............................................................................................................................................................................ 40
Metal Film Resistor Substitutions ......................................................................................................................... 40
Squealing/Feedback ................................................................................................................................................ 41
Radio Interference ................................................................................................................................................... 41
Scratchy Sounds on Potentiometer(s) .................................................................................................................. 41
Amp Buzz or Rattle When Installed in Cabinet ................................................................................................. 41
Appendix 1 Tone Tweaking ................................................................................................................................... 44
More Tips for fine tuning your amp ..................................................................................................................... 45
Appendix 2 How to read Resistor Color Codes .................................................................................................. 46
First the code ....................................................................................................................................................... 46
How to read the Color Code ............................................................................................................................ 46
Appendix 3 How to read Capacitor Codes .......................................................................................................... 47
Appendix 4 TriFly PCB Bill of Materials .............................................................................................................. 50
Appendix 5 FAQ ...................................................................................................................................................... 51
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Thank You
Thank you for purchasing your TriFly kit from Trinity Amps. We truly hope that you enjoy
building it and that it will be enjoyed for many years. If you have any questions please do not
hesitate to contact us and. Please be sure to check the package contents in case there are any
missing items.
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!
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 do appreciate your business. If there is any
other product we can provide to you or your associates, please get in touch and we will be
happy to discuss requirements.
Sincerely,
Stephen Cohrs,
Trinity Amps
Web site: www.trinityamps.com
email: stephen@trinityamps.com
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ntroduction
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:
stephen@trinityamps.com
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. To view the Resources, you need to sign up so go to
www.trinityamps.com
and click on the Forum button.
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 2005. No part of this document may be copied or reprinted without
written permission of Trinity Amps or contributing authors listed above.
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WARN NG
Please Read this Information Carefully
The projects described in these pages utilize POTENT ALLY FATAL H GH
VOLTAGES. If you are in any way unfamiliar with high voltage circuits or are
uncomfortable working around high voltages, DO NOT R SK YOUR L FE BY
BU LD NG 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 DISCLAIM 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 W THOUT A LOAD. YOU
W LL RU N YOUR OUTPUT TRANSFORMER!
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Version Control
Version Date Change
1.0 28Dec16 First release
1.1 1Feb17 Clarified input jack wiring
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TrinityAmps TriFly PCB Builders Guide v1.docx
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TriFly Description
The design of the TriFly began with an inspiring customer call "Please make me a small,
higher gain amp that I can play but that my ears can tolerate".. His ears were suffering from
an illness and he could not withstand any loud sounds. Yet he still wanted to play his guitar
like his old JCM 800 .
So the research began. Our design criteria were:
low and high gain modes but not too loud.
cost effective iron and parts
compact
minimal controls (possible tone control by the guitar tone).
Printed Circuit Board manufacture an option.
Able to use it in our Amp Camp Training program – build it in a day.
use traditional power supply not complicated circuitry.
use readily available off the shelf tubes such as 12AX7s.
We did a lot of research and in doing so, learned about the Phillips Self Split design which
eliminates the need for a Phase Inverter (PI). It is less efficient than a true Push Pull design
but would help meet our design goals. It was invented by Phillips and was used in some
budget amps of the day.
We also learned about a public domain amp called the Firefly that used this concept and
since we had all the parts, that became our first attempt at a low power amp.
The final design while unique retains some of the Firefly heritage. Once again we settled on
a Heyboer output transformer since in studio listening tests it proved the best. Surprisingly,
the output tube we chose was a 12BH7 rather than the expected ECC99 because he tone
was more like a Marshall. While we tried various preamp tubes, we did settle on the
ubiquitous and readily available 12AX7. We tried a tone control that was quite uncommon
and was used in Gibson and Garnet amps. It was a low loss control that at extremes subtly
boosts treble and gain or filters out treble. We also tried a Master Volume. In the end, we
went with ONE knob since most of the testers thought it was perfect that way. . So the
current design has Power, Volume and Input on the front panel.
We spent several hours in the SlyFi Chapel studio. Shawn Dore played while settings were
changed, tweaked, recorded, commented. We noted that the TriFly takes pedals so well; you
can get pretty well anything you want out of the TriFly. And we know players who like
pedals! If you want over the top distortion, this is the way to go.
After all was said and done, everyone agreed the TriFly was ready for prime time!! It really
shone and the best example was when using the Ash body Tele, on the neck pick up. Under
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