Trinity Amps Tramp Bedienungsanleitung
The Trinity Tramp
Amp Builder's Guide
For the sole personal use of Trinity Amps Tramp Customers.
October 2017, Version 2.9
Parts © Trinity Amps 2005 – 2016
www.trinityamps.com
Version 2.9
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Contents
Introduction .............................................................................................................................................................................. 4
Sources of help. ........................................................................................................................................................................ 4
Acknowled ements .................................................................................................................................................................. 4
WARNING .............................................................................................................................................................................. 5
Thank You ................................................................................................................................................................................ 6
Version Control ........................................................................................................................................................................ 7
About the Tramp ..................................................................................................................................................................... 8
Tramp Specifications ............................................................................................................................................................. 10
Guitar Amplifier Basics ......................................................................................................................................................... 11
Fender and Marshall tone controls ........................................................................... 12
Distortion ..................................................................................................... 16
General Amplifier Operation ............................................................................................................................................... 18
Some DO NOTS ............................................................................................. 18
Some DOs .................................................................................................... 18
Introduction to Vacuum Tubes and Common Terms .................................................................................................... 19
Buildin an Amp – General Guidelines ............................................................................................................................. 22
Introduction .................................................................................................. 22
Switches and wire ............................................................................................. 22
Physical layout ................................................................................................ 22
Groundin .................................................................................................... 22
Insulated jacks ................................................................................................ 23
Minimizin transformer interference ......................................................................... 23
Wirin ......................................................................................................... 23
Assemblin the amp .............................................................................................................................................................. 24
Before You Be in ............................................................................................. 24
Tools .......................................................................................................... 24
Solderin ...................................................................................................... 24
Tube Pin Numberin ......................................................................................... 25
Assembly Steps Summary ..................................................................................................................................................... 26
Install Tube Sockets and Terminal Strips .................................................................... 27
Heater Wires .................................................................................................. 27
Install Chassis Hardware ...................................................................................... 29
Install the Transformers ...................................................................................... 30
Wire Up the Transformers.................................................................................... 32
Connectin the Impedance Selector .......................................................................... 34
Output Jacks .................................................................................................. 35
Eyelet Board Construction ................................................................................... 37
Assemble Volume and Bass Pull Switches ................................................................... 39
Input Jack ..................................................................................................... 40
Install VRM ................................................................................................... 40
Install Eyelet Board ........................................................................................... 41
Connectin the Board ........................................................................................ 42
General Wirin ................................................................................................ 42
Final checkout ........................................................................................................................................................................ 44
Workin Inside A Tube Amplifier Safely ..................................................................... 46
Makin a Volta e Measurement .............................................................................. 46
Trinity Tramp Volta es ......................................................................................................................................................... 51
WARNING ............................................................................................................................................................................ 49
Troubleshootin ..................................................................................................................................................................... 51
Troubleshootin the VRM.................................................................................... 57
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VRM Bypass Procedure ...................................................................................... 58
Tone Tweakin ....................................................................................................................................................................... 60
Tube Substitutions ................................................................................................................................................................. 64
How to read Resistor Color Codes ..................................................................................................................................... 65
How to read Capacitor Codes ............................................................................................................................................. 66
FAQ .......................................................................................................................................................................................... 68
Tramp Bill of Materials (BOM) ........................................................................................................................................... 70
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Introduction
This uide has been prepared for builders of Trinity Amps Kits. It is always bein improved
and we would appreciate your feedback and comments to:
stephen@trinityamps.com
Accordin ly, content and specifications are subject to chan e without notice.
We do try to make it as accurate as possible, but it is sometimes hard to keep up with the
chan es. Therefore, if you do find an error, please let us know about it and we will correct it.
Su estions are welcome so if you have one, please et in touch with us.
Sources of help.
Forums: Please use the various forums to et help. They are an excellent resource and can be
found at trinityamps.com Fender forum.
The Fender Amp Field Guide is a terrific resource for all amps Fender
Email: We can’t help with every problem but if you can not et 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 ori inal. Rather than reinvent content, some parts are based on
content from other excellent sources and are hereby acknowled ed.
R.G. Keen’s site www. eofex.com - Tube Amp FAQ, Tube Amp Debu in
AX84.com site www.AX84.com - Gary Anwyl's P1 construction uide version 1.0
GM Arts website http://users.chariot.net.au/~ marts/index.html - Guitar Amp Basics
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 contributin authors listed above.
This anual is intended for the sole personal use of Trinity Amps Tramp Customers.
Any copy or other usage is an infringement of copyright.
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WARNING
Please Read this Information Carefully
The projects described in these pa es utilize POTENTIALLY FATAL HIGH VOLTAGES. If you are in
any way unfamiliar with hi h volta e circuits or are uncomfortable workin around hi h volta es, PLEASE
DO NOT RISK YOUR LIFE BY BUILDING THE . Seek help from a competent technician before
buildin any unfamiliar electronics circuit. While efforts are made to ensure accuracy of these circuits, no
uarantee is provided, of any kind!
USE AT YOUR OWN RISK:
TRINITY A PS EXPRESSLY DISCLAI ALL LIABILITY FOR
INJURY OR PROPERTY DA AGE RESULTING FRO THIS INFOR ATION! ALL
INFOR ATION IS PROVIDED 'AS-IS' AND WITHOUT WARRANTY OF ANY KIND.
RE E BER: NEVER OPERATE YOUR A P WITHOUT A LOAD. YOU WILL RUIN YOUR
OUTPUT TRASNFOR ER!
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Thank You
Thank you for purchasin your kit from Trinity Amps. We truly hope that you have fun
buildin it. If you have any questions please do not hesitate to contact us by email or on the
forum for help.
We are always lookin for Customer feedback. We have checked the build instructions
thorou hly and are confident in our product. However, mistakes do happen so our advice is
to cross-check a ainst the schematic as you connect each wire and part accordin to the
layout. 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
the earpa e.net, 18watt.com, AX84.com or trinityamps.com
We know you have a choice in suppliers and we do appreciate your confidence and of course
your business.
Sincerely,
Stephen Cohrs,
Trinity Amps
Web site: www.trinityamps.com
email: stephen@trinityamps.com
Version 2.9
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Version Control
Version Date Change
1.99 28Sep12 Chan ed 0.47uf cap from 600V to 100V in BOM
17Jan13 Updated BOM with 0.47uF/0.5uf, 22/20 GA & 530 VCT
1.99 20Au 13 Updated board picture;chan ed wordin around “Connect the first volume control to V2, pin
2…”
1.991 7Feb14 Updated BOM & some assembly notes
1.992 12May14 PAB Mod added inTweaks
2.0 3Au 14 Added VRM Bypass mod; chan ed OT impedance switch schematic
2.1 31Jan15 Updated BOM
2.2 31Mar16 Updated underside of board view
2.3 12Jun16 Updated Mains Power wirin to match revised layout
2.4 29Nov16 Updated for IEC Mains socket connection
2.5 9Dec2016 Updated Impdedance switch instructions.
2.6 23April 2017 Updarted Bill of Materials (BOM)
2.7 29Ju2017 Note to tie off and insulate the unused Yellow wires for a Tube rectifier.
2.8 20Jul17 Added and updated Volta e Chart with 6V6, 6L6 measurements.
2.9 12Oct2017 Updated board layout, BOM (220K CF 1W, added EL34 & PAB mod layouts
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About the Tramp
The Tramp be an as a low-powered, practice-bedroom amp concept that turned into a full
blown practice-home-studio- i in amp. Why would we bother? Well, there are lots of 2-
tube amps out there, from the famous Fender Champ to the Epiphone Valve Jr, and many
more. These amps have a sweet vibe but are challen ed in what they can do; whether the
amount of break-up they can provide in the case of some amps, or their tonal versatility in
the case of others. The Tramp was desi ned to address this shortcomin and provide
extreme versatility while still keepin to the format of a two-sta e preamp and only two
tubes. The Tramp also features a Master Volume control that doesn't make the tone suck as
you turn it down, as well as a variable power level control, allowin you to have almost any
tone ri ht down to bedroom volume levels you can comfortably talk over.
The Tramp is a brand new desi n that incorporates extreme, useful flexibility with distinct
amp voices and plenty of features. With a simple pull of a switch, you can o from Tweed to
'Tude; another pull switch and you can play Fat or Thin. Usin the Volume, Master Volume
and Power Level controls alon with Bass and Treble, achieves tonal nirvana! The desi n
supports 6V6, 6L6, KT66, EL34, 6CA7 and KT77 power tubes so you can swap the sin le
power tube for added i in volume and headroom. Power output is approximately 6W
with a 6V6, or 12W with the bi er tubes.
The Tramp is effectively two amps in one, which you can alternate between with the simple
pull of a switch. It was intended to cover all the bases from Clean to Dirty, and all the
possible shades in-between - and it delivers an amazin tonal ran e in doin so.
In Tweed mode, it's herita e is 3Fx series Tweed Princeton or Champ, with the additional
benefit of Treble-Bass tone controls. Tweed is smooth and creamy with a welcome warmth,
vinta e voice but with a little more solidity and clarity. It is full of soul and you can really
hear the Fender herita e. In Tweed mode, the Volume control is usable throu h it's entire
travel - or eous cleans around 5/6 on the dial, sli ht break-up around 7/8, and an amazin
hummin drive at 9/10. Everythin you want in the classic Tweed amp spectrum, from clean
to dirty, is ri ht here.
In 'Tude mode, the Tramp exceeds what you could traditionally achieve with the simple two-
tube amp format. The sound opens up with an astonishin clarity, and extended ran e of
clean and distorted sounds. 'Tude lows with all of its harmonic content, and rinds when
the uitar ets wound up.
'Harmonic haze' is what it's all about in the clean parts of 'Tude - or eous! Just a little hair
on the tone for presence with all these overtones swirlin around it and a nice solid
foundation. Cranked up, it's complex, raw and ed y but still under control, and smooth but
in an a ressive way - there's tone ri ht to the top. Usin Fat or Thin settin s doesn't matter
- it holds to ether but in a really primal raw "teeth rittin " way... with a P-90 Les Paul - it
rocks in a Neil Youn kind of way... Bass dimed, Bass at zero, it doesn't matter. With bi
humbuckers drivin it, and the Volume cranked ri ht up, you et modern rock distortion
tones. At the same time the natural tone of the uitar really comes throu h, and you et a
completely different vibe from this amp between a Strat or an ESP.
With the Volume all the way up Power Level acts like a "presence" control - not in a "top
end" sort of way, but more in a "brin s the tone out of the speaker" wider, more
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comprehensive way. Because the tone is fairly compressed with Volume cranked, movin
power from 10 to 5 on the power level doesn't really make it much quieter, just darker and
warmer, but still with all the beef.
As you increase the Tramp's Power Level, the tone comes forward with hi hs and hi h mids
becomin more prominent. At full power and bass down, you can et a real ed y, rin y,
"transitory" kind of tone, and as you roll the bass up, Neil Youn and his very lar e "tone"
show up. With power level below 5 the tone ets quieter, but it still has all the ra e. As an
added bonus, players can switch back and forth from Tweed to 'Tude without havin to
adjust the Treble or Bass - the tones just work without havin to move a knob... so ood
news for those that dream of switchin between Tweed/'Tude on a i - you can just 'Set it
and for et it!'
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Tramp Specifications
1. Controls: Power/Level, Volume, Bass, Treble, Master Volume, 1 input
2. VRM [power scalin ] incorporated into desi n. 'Brown out' the amp.
3. Drive octal tubes with OT & bias resistor chan es (6V6, 6L6, KT66, EL34,6CA7 ,KT88)
4. Cathode Bias
5. Solid State rectifier
6. 2 tubes (3 max)
7. 1 additional Noval socket hole punched (power or pre-amp)
8. LED Power Indicator
9. Tweed/'tude push/pull switch on Gain control for clean/dirty preamp
10. Thin/Fat push/pull switch on Bass control
11. Bias resistor switch to accommodate two power tubes
12. One Input jack; Two Output jacks
13. Impedance Selector (4,8,16 ohms)
14. Dual Impedance Heyboer custom Output Transformer - 5K AND 2.5K
Power / Level control – Rotary ON-OFF switch with 1M control for VRM*.
Actions: Off – On (low level is standby. Turnin control further effects the VRM control
and the power level of the amp (power scalin ).
*VRM– components mounted on eyelet board. MOSFET mounted immediately beside
board & leads soldered in directly.
Volume control – to adjust amount of volume and overdrive. The Tramp able to o from
Clean to Dirty. The Tramp plays like a vinta e Tweed Champ/Princeton when in Tweed
mode. When played this way, the Master Volume would be on max, and then the Volume
control becomes the amp's Volume control. Incorporates a push/pull Tweed / 'tude switch
for Clean / Tweed // Dirty / Marshall ran e
Tone Controls:
Bass – Cut/Boost. Incorporates a push/pull Thin/ Fat switch for enhanced voicin
Treble - Cut/Boost
Master Volume control – overall volume level control.
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