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 Post subject: Tweed With VRM
PostPosted: Mon May 05, 2014 11:47 pm 
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Hi everyone...

Just picked up my second Kit this weekend and I am going through the build docs and reading everyone's builds with pictures...

I purchased the VRM kit to put into the build as well to make the neighbours happy.

In the VRM docs, it mentions to move the 1M input jack resistors to pins 2 and 7 on v1. But it does not mention if i should add a wire in its place...
I.e. on the high inputs do I leave an open circuit between the hot and the switch and a closed circuit from switch to ground?

Does this make the "Hi" and "Low" inputs the same? the 1M R1 and R4 will be used for both inputs?



Thanks for any help....

My soldering iron is getting itchy...


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 Post subject: Re: Tweed With VRM
PostPosted: Tue May 06, 2014 12:00 pm 
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You don't need any extra jumper there. Just move the 1M over and it will do its thing in the new location.

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 Post subject: Re: Tweed With VRM
PostPosted: Tue May 06, 2014 10:32 pm 
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coco wrote:
You don't need any extra jumper there. Just move the 1M over and it will do its thing in the new location.


Thanks for the quick response...

For the Hi Inputs, the Switch is still connected to ground and then to the input ground star still?
Or is it just the ground connected to the input ground start.

Heaters are wired up and the PT is wired to the point where I need to finish building the VRM Switch before finishing the Power Section...


The second time around is a lot easier.....

Andrew


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 Post subject: Re: Tweed With VRM
PostPosted: Tue May 06, 2014 10:52 pm 
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Holy Ghost
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Wired the same as the layout just move the 1M resistor.

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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 7:51 pm 
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Well my Tweed is complete.
I did a double check of my wiring and found no errors, so decided to power it up and check it out...
Sound check went well and I am impressed...

Here are my voltages.
V1 Pin 6 121.3 (130)
V1 Pin 1 120.7 (130)

V2 Pin 3 1.2 (1.4)
V2 Pin 1 155.5 (158)
V2 Pin 6 197 (204)
V2 Pin 7 15.1 (18)
V2 Pin 8 44 (50)

V3 Pin 4 322 (348)
V4 Pin 4 322 (348)

V3 Pin 8 19.7 (20)
V4 Pin 8 19.7 (20)

Forgot to measure V1 Pin 8 & 3, V3 Pin 3 and the voltages on V5 with the VRM.

Pictures to follow...


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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 7:56 pm 
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Original Parts :

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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 8:01 pm 
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Layout parts on drawing to verify inventory.

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Install the hardware :

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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 8:08 pm 
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Solder up the VRM :

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Wire up the PT and the Tube Heaters :

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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 8:13 pm 
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Build up the Board and Fly Wires :

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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 8:18 pm 
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Install Speaker :

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Wire Up OT 4/8 SPDT Switch :
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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 8:31 pm 
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Fit Board into Case and wire up pots :

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Install controls and braid OT wires :
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Attach the Fly Wires :
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Input Jacks :
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V1 :
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V2 :
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V3 & V4 :
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V5 : (NOTE - i and the red wire on the wrong pin and found out during my final inspection before power up - i am not sure if this would have caused any issues or not...
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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 8:34 pm 
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Install in cabinet :

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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 8:38 pm 
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Final Pictures :
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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 9:19 pm 
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Nicely built. Looks great . How about that Tone Tubby Low Watt speaker, impressions?

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


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 Post subject: Re: Tweed With VRM
PostPosted: Thu May 15, 2014 10:44 pm 
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I am very impressed with the speaker and Connie is really happy with the VRM...


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