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PostPosted: Mon Sep 18, 2017 7:25 pm 
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Here is the rest of the Turret Board installation. I already installed the flying leads; so you will see glimpses of them.

Phase inverter components part 1
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Phase inverter components part 2
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TMB area components
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Preamp (V1 area) components
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Input side of V1 area components
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Full picture of completed Turret Board components. Also, I used a thicker 20 gauge wire for the ground buss.
Attachment:
DSCN2900 - Copy .JPG
DSCN2900 - Copy .JPG [ 578.21 KiB | Viewed 5619 times ]


C2


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PostPosted: Mon Sep 18, 2017 10:58 pm 
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Location: Qualicum Beach, BC
Looks good! Keep up the great work, you are almost done!


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PostPosted: Tue Sep 26, 2017 11:34 pm 
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Here are pics of the tube socket wirings. First the preamp and power inverters (V1, V2, V3)

Here is V1. Notice that I used the four-tag terminals to make it easier to install the VRM coupling capacitors [and for the cascade mod that I will be installing (cascading TMB into Normal channel)]. I have not connected any wiring form the normal channel's coupling capacitor to pin 7 because that will take place with the cascade mod wiring later.
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V1a.JPG
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Here is V2
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Here is V1 and V2
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Here is V3
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V3.JPG
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Here is V2 and V3. I ran the boost wire (dark blueish purple) from V2 pin 3 to the 2k7 resistor, and then on to the DPDT push-pull potentiometer switch that I installed on the TMB Gain Pot. Then ran the boost wire (light blue) from the switch back to the other 2k7 resistor on the turret board. I double checked it several times to make sure that the second resistor was engaging with the push-pull switch. It works.
Attachment:
V2 V3.JPG
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Here are V4 and V5 (the EL84 power amp tubes)
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V4-V5.JPG
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Here are V6 and V7 (the 6V6 power amp tubes)
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V6-V7.JPG
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Here is a picture of most of the tubes.
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tubes.JPG
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You may notice the small gray and purple cathode wires. I used 600v wire to go to the cathode switch which is a push-pull dpdt 500k potentiometer installed for the Bass pot. The cathode switch wires run from the power tubes under the board and to the potentiometer switch, then back to the turret board. I will post pics of the potentiometer side later.

Also, please excuse the cat hair in some of the pictures; it gets on everything. I have since cleaned all the sockets with alcohol and removed the dust and hair.

C2


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PostPosted: Wed Sep 27, 2017 9:08 am 
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Looking good so far! Neatly done!

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Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps


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PostPosted: Sun Oct 15, 2017 5:14 pm 
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It has been a while, but I made some progress. Here are pictures of the cathode switch. FYI--I put it on a 500k Push-Pull Potentiometer and used this for the Bass Potentiomenter. I ran the wires (small gray and small purple) from the cathodes on the EL84 (pin three) and 6V6 (pin eight) tubes under the turret board and up to the push-pull switch, and then back to the 150R and 250R resistors on the turret board. I twisted all of these wires and heat-shrink wrapped them. I double checked to make sure that the switch was engaging the correct sides. Also, I chose to wire the cathode switch so that the 6V6 side is the default (pushed-in side), and the EL84 side is engaged by pulling the push-pull switch.

First, here is the overview picture. It shows the three potentiometers (now wired), and the cathode switch (sorry for the blurry focus of the switch). I decided to use different color wires (orange, blue and yellow) for the middle and treble potentiometers leads that went directly to the turret board; this just makes it easier for me to keep them organized.
Attachment:
Cathode Bass Middle Treble pots.JPG
Cathode Bass Middle Treble pots.JPG [ 1.72 MiB | Viewed 5505 times ]


Second, here is a closeup of the cathode switch showing both sides of the switch and the two 220k resistors.
Attachment:
cathode switch push pull close up.JPG
cathode switch push pull close up.JPG [ 294.42 KiB | Viewed 5505 times ]


Third, here is an picture from a little higher up showing the switch and the gray & blue wires twisted and running under the turret board.
Attachment:
Cathode switch.JPG
Cathode switch.JPG [ 988.5 KiB | Viewed 5505 times ]



Next to come will be the wiring of the boost switch.
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PostPosted: Mon Oct 16, 2017 8:44 pm 
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Holy Ghost
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Location: Canada
Thanks for the update. Looks nice.

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