Trinity Amps TRIP TOP User manual

The Trinity Amps
TRIP TOP
Amp Builder's Guide
For the sole personal use of Trinity Amps Customers.
July 2020, Version 21.3
Parts © Trinity Amps 2005 - 2021
www.trinityamps.com

2
Trip Top Builders Guide Ver21.3.docx

3
Trip Top Builders Guide Ver21.3.docx
Thank You
Thank you for purchasing your TRIP TOP 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: [e-mail]

4
Trip Top Builders Guide Ver21.3.docx
Table of Contents
Table of Contents ............................................................................................................................................................................3
Introduction......................................................................................................................................................................................6
Acknowledgements..........................................................................................................................................................................6
WARNING ......................................................................................................................................................................................7
Please Read this Information Carefully .............................................................................................................................. 7
Version Control................................................................................................................................................................................9
Builders Guide General Theory...................................................................................................................................................11
Trip Top Description ....................................................................................................................................................................11
Biasing Tube Amps........................................................................................................................................................................13
Building an Amp ............................................................................................................................................................................14
Introduction............................................................................................................................................................................... 14
Switches and wire...................................................................................................................................................................... 14
Physical layout ........................................................................................................................................................................... 14
Grounding.................................................................................................................................................................................. 14
Insulated jacks............................................................................................................................................................................ 15
Minimizing transformer interference..................................................................................................................................... 15
Wiring.......................................................................................................................................................................................... 15
Assembling the amp ......................................................................................................................................................................15
Before You Begin...................................................................................................................................................................... 15
Tools............................................................................................................................................................................................ 15
Soldering..................................................................................................................................................................................... 16
Tube Pin Numbering................................................................................................................................................................ 17
Assembly Steps Summary.............................................................................................................................................................18
1. Install the Hardware ............................................................................................................................................................. 18
2 Wiring ...................................................................................................................................................................................... 22
Grounding Scheme.............................................................................................................................................................. 23
Heater Wiring ....................................................................................................................................................................... 23
3 Install Transformers .............................................................................................................................................................. 24
4 Power Supply Wiring............................................................................................................................................................. 25
Wiring the Power Switch and Indicator (120V).............................................................................................................. 28
Wiring the Power Switch and Indicator (240V).............................................................................................................. 30
Test the Power Transformer.............................................................................................................................................. 31
Assembling the Capacitor Assembly................................................................................................................................. 32
5 Turret Board Construction................................................................................................................................................... 35
TRIP TOP Board................................................................................................................................................................. 35
Install Turret Board ............................................................................................................................................................. 37
Build the Tone Boards ........................................................................................................................................................ 38
Install Control Bus Bar and Components........................................................................................................................ 39
6 Connecting the Turret Board............................................................................................................................................... 41
Connecting the Turret Board to Controls........................................................................................................................ 42
7 Output Transformer - Output Jacks................................................................................................................................... 43
Connect the Impedance Selector and Speaker Output Jacks........................................................................................ 44
Connecting the Turret Board to Power Supply .............................................................................................................. 46
Power Supply Grounds....................................................................................................................................................... 47
Power Supply High Voltage ............................................................................................................................................... 47
Bias Supply............................................................................................................................................................................ 47
8 Test the Power Supply .......................................................................................................................................................... 48
Connecting the Tone Boards .................................................................................................................................................. 50
9 Input Jacks .............................................................................................................................................................................. 50

5
Trip Top Builders Guide Ver21.3.docx
Prepare co-axial cable for connections.................................................................................................................................. 50
10 Final checkout ...................................................................................................................................................................... 52
Setting the Hum Control Pot............................................................................................................................................. 53
Power Up.................................................................................................................................................................................... 54
Minimizing Hum.................................................................................................................................................................. 56
Trinity TRIP TOP Voltage Charts..............................................................................................................................................58
WARNING ....................................................................................................................................................................................60
Please Read this Information Carefully ............................................................................................................................ 60
Builders Guide General Troubleshooting..................................................................................................................................62
Distortion ................................................................................................................................................................................... 62
Tone Tweaking...............................................................................................................................................................................65
Running KT88 Tubes in the TRIP TOP .............................................................................................................................. 65
Output Power Measurements ................................................................................................................................................. 66
Appendix 1 –Power Transformer Schematics .........................................................................................................................67
Appendix 2 - Vacuum Tube Bias Tables....................................................................................................................................69
Appendix 3 - How to read Resistor Color Codes.....................................................................................................................70
First the code ........................................................................................................................................................................ 70
How to read the Color Code.............................................................................................................................................. 70
Appendix 4 - How to read Capacitor Codes .............................................................................................................................71
Appendix 5 - FAQ.........................................................................................................................................................................73
Appendix 6 - Cliff Jacks Explained.............................................................................................................................................76
Appendix 6- TRIP TOP Bill of Materials ..................................................................................................................................77
Trinity Amps Schematics and Layouts .......................................................................................................................................80

6
Trip Top Builders Guide Ver21.3.docx
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: [e-mail]
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.
Concept used with permission from from CtG electronics www.ctgelectronics.weebly.com/
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
www.18watt.com - website for various content and diagrams –Richie TMB
Aron from diystompboxes.com
Parts © Trinity Amps 2005-2020. No part of this document may be copied or reprinted without written
permission of Trinity Amps or contributing authors listed above.

7
Trip Top Builders Guide Ver21.3.docx
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 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 WITHOUT A LOAD. YOU WILL RUIN
YOUR OUTPUT TRANSFORMER!

8
Trip Top Builders Guide Ver21.3.docx

9
Trip Top Builders Guide Ver21.3.docx
Version Control
Version
Date
Change
1.0
19Mar2015
First draft
1.1
23Mar2015
Updated based on comments from Chris Moir
1.2
27Mar2015
Tone board tip added; installation of control bus bar updated
1.3
19Apr
Updates based on feedback
1.4
24Apr
Updates based on Chris Moir’s first build
1.5
20May
Removed terminal strip on V6, p. 27 (R. Coppola)
1.6
28Jun
Updates to power supply and heater wire sections (J. Waterkotte & R.
Coppola)
1.7
18Jul
Many Updates including:
Sec. 2 , 6SL7 pin numbers ;
Sec. 4, PT colours added; Test PT V4-V5 pins; PSU filter cap updated to
47uF from 100uF; bias R updated to 22K from 47K; Sec. 5 enhanced
section picture of turret board; added alternate installation; corrected pin
numbers in pictures of terminal strip installation at V1,V2 & grid resistor on
V4, V5
Sec. 7 Made a note to lengthen the centre tap wire of the OT; clarified the
wiring of PSU ground and Bias supply; updated bias resistor to 47K from
22K in PSU HiV
Sec. 8 added note to set meter to 600V
Sec. 10 Revamped the Start-Up procedure; added cathode bias section
1.9
15Aug
Enhanced Distortion troubleshooting with more tips; Noted wiring of OT
to Impedance switch.
1.91
23Nov15
Corrected connection to Bias supply from Rectifier from pin 8 to pin 6.
1.92
27Dec16
Updated BOM for 20Ga BUS BAR; updated instructions on BUS BAR installation
1.93
31Mar17
Corrected primary impedance from 5500 to 6800 ohms
1.94
9May17
C19, 22,23,24 changed to 47uf/63V
1.95
22Aug17
Updated Connecting the Tone Boards instructions
1.96
4Sep17
Updated for Bias Selector slide Switch. Was toggle switch; Updated BOM
1.97
18Jan18
Corrected turret board layout in manual; Updated bias cap info to 47uF/63V)
(M.O’Toole); updated V4,V5 grid resistor layout (M.Vockner)
1.98
6Aug18
Updated Bias Selector Switch
1.99
13Feb19
Updated BOM; added #10 Tx mounting screws
2.00
29Jun19
Updated for new PT
2.00
13Apr20
Output Power Measurements added (R. Brotherstone)
2.01
7Jul20
Updated BOM
2.02
14Jul20
Tone board layout updated / corrected. Bias switch layout, wiring and
testing clarified.
2.03
17Jul20
Corrected to “Connect the 500R / 50uf Positive end / 500R”
2.04
25Jul20
Corrected Tone Board installation to match Layout drawing
2.05
31Jul20
Note for 15K bias range resistor added.
2.06
20Aug20
Changed to 15K bias range resistor.
21.2
28Jul21
Updated BOM to correct missing 2-22K Tone Board resistors
21.3
21.3
16Aug21
Updated heater -Hum pot wiring.

10
Trip Top Builders Guide Ver21.3.docx

11
Trip Top Builders Guide Ver21.3.docx
Builders Guide General Theory
For a discussion on Guitar Amp Basics and Tube Amp Theory, please refer to our
support page document Builders Guide General Theory
Trip Top Description
Based on several years of vintage Ampeg B15 designs, the Trip Top combines the original circuits of both
the Ampeg B-15NC (1964) as well as the later B-15NF (1965-67). The B-15-NF channel has the volume
control section before the tone stack and in the B-15-NC channel it is after. Maintaining these circuits
keeps the same gain structure and biasing found in the original B-15N amp designs, helping to preserve
their true heritage. It also has two power supply settings - Cathode and Fixed bias to provide further tone
structure.
The Trip Top is designed to output approximately 30 watts in cathode bias mode and 40 watts in fixed
bias mode using 6L6GC tubes.
It was possible to get it to sound very, very close to Sly-Fi Chapel's 70s B15N using an Ampeg Portaflex
15" Bass cab, so it's tone has been proven authentic. But it has some extra hot sauce the original doesn't
and it absolutely kills for bass. Sly-Fi Chapel recently re-amped all the bass on a current project as a result
and found the extra headroom and tone stack arrangements made it better than their studio B15 in a lot of
ways.
But calling it a bass amp is missing half the point. It's an AMAZING guitar amp. It has a different
sonority than other Trinity offerings which have a focus on a very smooth but sparkly top end (the Triwatt
being the one that slightly deviated). The Trip Top is the opposite - there's still a nice smooth top end -
band plenty of it - but this amp is all about low end girth and grind. It's got a nice big tight booty (even
with the bass tone knob on full!) that inspires rocking out down low on the neck with open chords!! Fixed
bias has a more forward, clear, present sound... Cathode bias gives it a saggier feel but adds this gorgeous
rich high harmonic overtone to everything - really nice for those ringy single coil U2-esque type sounds
The Trip Top combines the original circuits of both the Ampeg B-15NC (1964) as well as the later B-
15NF (1965-67). Maintaining these circuits keeps the same gain structure and biasing found in the original
B-15N amp designs, helping to preserve their true heritage.
It has two channels each have volume with a 'Pull Bright' switch, treble and bass controls. The first
channel, NORMAL, from the B-15-NF, has the volume control section before the tone stack. The second
channel, CASCADE, comes from the B-15-NC which has the volume control section after the tone
controls.

12
Trip Top Builders Guide Ver21.3.docx
The power amp section has two switch selectable bias modes - fixed (B-15NF) and cathode (B-15NC).
While 1N4007 solid state rectifier diodes were used for the "NB" configuration, this was not incorporated
into the design but can be a user implemented option.
The Trip Top is designed to output approximately 30 watts in cathode bias mode and 40 watts in fixed
bias mode.
The tube set used in both the B-15NC and B-15NF is incorporated in the design: Three 6SL7-GT dual
triodes for preamp and phase inverter circuits, two 6L6GC power tubes, and a 5AR4 rectifier. A small
change in the phase inverter to power amp coupling capacitors in original B-15Ns from .022uF to .047uF
opens things up a bit.
The Output Transformer has multiple impedance secondarys which allow a choice of 4, 8 or 16 ohm
speaker loads. The primary impedance is 5500 ohms.
The Trip Top is built using point-to-point wiring using turret board construction for optimal service and
reliability. High-quality tubes, coupling capacitors and resistors are selected for maximum tone,
performance and reliability. The Trinity Amps power transformer and output transformer are all custom
built and selected for maximum tone, performance and reliability.

13
Trip Top Builders Guide Ver21.3.docx
Biasing Tube Amps
The 'Biasing' of tube amps commonly refers to "setting the idling current in the Power Tubes in Push-Pull
output stages" - the No-Signal or Static (=DC) Current Levels are the target spec and the surrounding voltage
conditions are adjusted accordingly when possible. The voltage-to-current bias relationship that exists for a
power tube under a given bias set will respond differently from tube to tube (between brands especially)
AND, more-so, over time of use. Some amplifiers have mechanisms for automatically setting the bias,
Cathode Bias for example, and others don’t and are called Fixed Bias. Some Fixed Bias amps have a control to
change the bias setting. These are sometimes called Variable Bias.
In Fixed Bias/ Variable Bias push-pull amplifiers a separate power supply circuits is employed to generate a
negative voltage with respect to chassis ground - this voltage is fed to the grid terminal of the power tubes
through bias feed resistors (typically 47k to 220k ohms) ... this is the negative Bias voltage that is typical
written in amplifier schematics, in variable bias amplifiers this voltage can be "swept" through a
potentiometer.
In Principle As the bias voltage in the grid is brought more negative with respect to the chassis ground (say,
from -42volts to -52volts) then you'll typically find that the gain of the output stage will drop along with the
drop in idling currents ... if the bias voltage is made less negative (opposite) then you'll find the gain of the
output stage going the other way along with the increase in idling currents ... Note: some players mistakingly
see the bias control as merely another volume control - the Red-Knob Fender Twins are notorious for this
because of their availability of external control ... guitarists should tell each other to be cautious playing with
that control alone unless they plan on making a proper science of it (!)
The Bias Limits
There are two primary biasing LIMITS on the network variable sets that need to be observed when biasing
power tubes in a clas-AB push-pull stage.
The Lower Biasing Limit, when the amp is underbiased, produces a cross-over notch when observing AC
waveforms on an oscilloscope . When a push-pull output stage is underbiased (bias voltage is too negative) it
often sounds fuzzy and weak.
The Upper Biasing Limit leads to a situation where the dissipation rating of the power tubes is exceeded
during normal operation. When the power tubes are running too hot the amplifier will sound very grainy and
you might even hear some background crackling when not playing. This is a sign the power tubes are over
biased (too much current at idle). Another tell-tale sign that your power tubes are biased way too hot is if the
outer plate inside the tube turns red when you play.
Aside from frying the tube this situation can potentially damage the output transformer, so if you ever see this
happening while playing it's best to shut the amp down right away and have it serviced. This is an extreme
situation that shouldn't happen under proper operating conditions.

14
Trip Top Builders Guide Ver21.3.docx
Building an Amp
Warning: Do not attempt to build a guitar amp unless you know how to work safely with the dangerous
voltages present in a tube amp. These can exceed 700 volts.
Introduction
If you have purchased your Trinity Amp as a kit, this guide will help you build a tube guitar amplifier. It is
oriented towards someone who knows a little about electronics but is new to do-it-yourself amps. It outlines a
simple path to getting a quality amp build.
Switches and wire
Use standard UL approved switches with a 125V/3A rating for the Power and Standby switches. Use 22 or 20
Gauge insulated solid wire with a 600V rating. It is good to get a variety of colors so you can color code your
wiring.
Use 18 Gauge stranded for mains wiring.
Physical layout
Make sure the jacks, sockets and pots mounted along the edge won't interfere with parts mounted on the
underside of the chassis. Imagine how chassis will be mounted in the cabinet and make sure there is enough
clearance for the speaker and mounting brackets. Trinity amp chassis are laid out with serviceability and
neatness in mind.
Grounding
It is recommended that you follow the layout provided with your Trinity Amp. It has been tested and has
proven reliable. If you choose to deviate, consider the following information.
Amps traditionally use the chassis for signal ground. This is not the best choice since it can create ground
loops and bad ground connections may develop over time. It is better to use star grounding in which all of the
local grounds are collected at a single ‘star ground’ point. With star grounding there is only one connection
between the chassis and signal ground.
Here are some rules for laying out a star ground. More information on grounding can be found in the Tube
Amp FAQ and the Tech Info page of Aiken Amplification.
(1) Connect the power transformer center tap directly to the negative terminal of the first power supply filter
capacitor (cap) then run a separate wire from the negative terminal to the star ground point.
(2) Collect the ground points of each tube and its associated resistors and capacitors to a local ground point
that is not connected to the chassis. Run one wire to the star ground point from each collection.
(3) Run exactly one wire from the star ground point to chassis.
(4) Insulate the input and output jacks from the chassis.

15
Trip Top Builders Guide Ver21.3.docx
The safety ground wire from the mains is separate from the signal ground. Run a wire from the AC ground to
the chassis near where the AC power enters the chassis.
Insulated jacks
To insulate the input and output jacks either use plastic insulated jacks or metal jacks with insulating washers.
Some people prefer the increased durability of metal jacks. Insulating a metal jack requires a shoulder washer
with a 3/8’ internal hole that fits a ½’ panel hole.
Minimizing transformer interference
To minimize coupling between the power transformer and output transformer orient them so their plates are
at right angles. If possible, place them at opposite ends of the chassis.
Keep the input stage wiring short and away from the output stages. This minimizes the possibility of
oscillations caused by coupling of the output signal into the input.
Mount the grid resistors as physically close to the grid pins as possible.
Use a twisted pair of wires for the tube filament wiring. Route it away from AC lines and close to the chassis.
Wiring
The traditional method of constructing amps involved mounting the components on tag board or fiberboard.
This is the technique that is used for Trinity Amplifiers and is the recommended approach for service and
reliability.
Assembling the amp
Before You Begin
When you first receive your kit, remove all of the parts from the shipping box and place them on a well-lit,
clean surface. Check all of the parts against the parts list and verify that you have everything before you begin.
Contact us at once if you are missing anything, or if something appears to be damaged.
Tools
To assemble the amp you need:
1. 25 watt pencil tip soldering iron
2. 60/40 Rosin Core solder (ROHS use Lead-free solder 97/3 tin/copper Rosin Core)
3. wire stripper
4. wire cutter
5. needle nose pliers
6. screwdrivers (Philips, standard)
7. multi-meter with minimum 500V range
Use a stand for the soldering iron, a sponge to keep the tip clean, de-soldering wick material and clip leads.
You should also have a multi-meter with at least 500V range, preferably 1000V and an audible continuity

16
Trip Top Builders Guide Ver21.3.docx
checker. Try to get a multi-meter that measures capacitance. This lets you verify the value of your components
before you install them.
Soldering
Soldering is accomplished by heating the components to be soldered and allowing the molten solder to flow
onto them. Do not try to melt solder on the tip of the iron and transfer it to the solder joint. It doesn't work.
Follow these steps when soldering to boards. Note ROHS instructions:
1. Use 60/40 rosin-core solder. (use lead free when soldering ROHS boards. )
2. Keep the tip of the soldering iron clean. If it's dirty, wipe it on a damp sponge to clean it.
3. Set the temperature of your soldering iron to about 700F.
ROHS: 725-750F when soldering ROHS turret boards, the dwell time (time to heat and complete the
connection) is a little longer and temperature is set a little hotter. The solder used was Lead-free solder 97/3
formula tin/copper with a Rosin Core.
4. Melt some solder on the tip of the iron. The molten solder helps to efficiently transfer heat from the
soldering iron to the component leads.
5. Make a good mechanical connection first, and then make a good solder joint.
6. Heat the leads to be soldered by touching it with the tip of the iron.
7. Touch the solder to the leads. The solder should flow onto the leads. Avoid breathing the fumes.
8. Remove the soldering iron and allow the solder joint to cool.
Note: Do not apply the tip of the soldering iron to the turret board any longer than it takes for the solder to
flow.
Some people do have success using leaded solder on ROHS boards. Your experience may vary.
The solder joint should be clean and shiny. (ROHS joints are not as shiny as non-ROHS). If it is dull looking
it may be a ‘cold solder joint’ which is not a good electrical connection. If a solder joint is suspect, heat it with
the iron to reflow the solder.

17
Trip Top Builders Guide Ver21.3.docx
Tube Pin Numbering
The pins on an 8-pin tube socket are numbered 1 to 8 in a clockwise direction when viewed from the bottom.
Note that there is a key to ensure the tube is inserted correctly into the socket.
6SL7
6L6 /KT88
6SL7
6L6 /KT88
The pins on the potentiometers are numbered 1 to 3 from left to right when the shaft is facing towards you
and the pins are at the top.

18
Trip Top Builders Guide Ver21.3.docx
Assembly Steps Summary
1. Install Hardware on the Chassis.
2. Wire up the heater wires to the sockets.
3. Install Transformers on the chassis.
4. Wire up the power supply - Mains, Transformers, power switch and pilot light.
5. Assemble the turret board and Install on chassis.
6. Connect turret board leads to tubes installing off-board parts as you proceed.
7. Connect turret board leads to controls installing off-board parts as you proceed.
8. Remove input jacks. Wire with 3.3M film resistors and shielded cable. Re-install.
9. Check Wiring.
10. Follow Start-Up procedure.
TIP: On a copy of the layout, highlight the connections as you complete them to make sure they are
done correctly.
1. Install the Hardware
There are many nuts bolts etc. required. Here are some guidelines.
Part
Where to use
4-40 X 5/16
(no nuts
reqd.)
Mount tube sockets, [optional lock washer under head on threaded
chassis];
4-40 nuts
Mounting terminal strips, ground point, IEC socket
4-40 X 7/16
If supplied –to mount tube sockets with terminal strip, use nut to hold
terminal strip with nut/lock washer or lock nut. Use with nuts/lock
washer to mount IEC connector, 5 lug terminal strip and 1-#4 pre-amp
chassis lug.
Mount tube sockets on non-threaded chassis with lock nut
6-32 X 3/8
Mount 3 star ground # 6 chassis lugs with lock nut. Mount Capacitor
clamp; mount power ground lug in some amps
6-32 X 1
Mount turret board to chassis using stand-off. Use with lock nut.
8-32 X 3/8
Mount Mains ground ONLY. Use KEPS nut with lock washer and #8
chassis lug. power ground bolt.
10-32 X 3/8
Mount Output and Power trans. With KEPS lock nuts & washers
10-32 X 2
Mount chassis to cabinet. Use cage nuts in square holes pressed into
chassis.

19
Trip Top Builders Guide Ver21.3.docx
#4-2
#6
#10
#10
#4-2
#4-2
#4-2
#4-2
#4-2
#6-2
#6
#10 CAGE NUT
#10 CAGE NUT
#4
#4
#6

20
Trip Top Builders Guide Ver21.3.docx
Insert the 4 Cage Nuts by setting them in place in the square hole, one side fitting into the square hole and
then using a straight blade screwdriver, press in the cage on the opposite side so it snaps into position when
pushed into the square hole indicated above (#10 Cage Nut).
Install all the tube sockets aligning them so the Pin 8 of each socket points towards the rear of the chassis.
Use #4 –5/16” screws to fasten them to the chassis from the outside.
V6
50/50 uf 500V
1
2
3
4
5
6
7
8
CAN CAP
POWER
GROUND
#6 LUG
CHASSIS GROUND
#6 LUG
CHASSIS LUGS
Mount 3 # 6 chassis lugs with #6 X
3/8” screw lock nut. This is the Chassis
Star Ground
Mount 1 # 6 chassis lugs with #6 X
3/8” screw and lock nut. This is the
Mains Power Ground.
Install the Can Cap bracket with #6 screws then install the dual capacitor 50/50 JJ can cap using the bracket
to hold it in place.
Insert the 4 plastic grommets into the chassis for the wire leads passing through the chassis from the power
transformer and output transformer.
Some controls are more easily installed on other components prior to installation. Use the following
illustrations as a guideline to pre-build them.
Volume Control
Before installing the
Volume Controls, pre-
wire the switch with a
500pf bright capacitor
as shown.
220K 2W
.01uf
1KV DISC CAP
Stand-By Switch
Before installing the
Stand-By switch, pre-
wire the switch with a
.01uf 1Kv capacitor
and 220K 2W resistor
as shown.