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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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It is currently 14 Jul 2020, 14:08

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 Post subject: The Ultimate OTL
PostPosted: 16 Jun 2020, 15:47 
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Joined: 03 Jun 2020, 11:06
Posts: 37
Location: France
This build - here shown in ptototype version - should be finished in the summer to come...

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The U-OTL will be built in two compact mono-blocks - the same size as my U-300B : 275x175x67mm for the chassis.

Image

Wait and See... ;)

-tbln

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 Post subject: Re: The Ultimate OTL
PostPosted: 22 Jun 2020, 15:36 
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Location: France
Work goes on slowly for the moment :blush: ... Calibration of the mAmmeters monitoring the PA plate current (WWII General electric 500mADC) :

Image

Cheers, :beerchug:

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 Post subject: Re: The Ultimate OTL
PostPosted: 24 Jun 2020, 05:12 
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Lab-Retro-Cool look : Engine turning (Bouchonnage in French) of the chassis, before drilling :

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Wait and See...

A+!

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 Post subject: Re: The Ultimate OTL
PostPosted: 24 Jun 2020, 14:35 
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Location: France
Logos and plates are engraved 8-) :

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I should be able to start tracing and drilling of the chassis soon... ;)

-tbln

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 Post subject: Re: The Ultimate OTL
PostPosted: 25 Jun 2020, 06:31 
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tracing and pointing the main parts on the chassis :

Image

Wait and see ! ;)

-tbln

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 Post subject: Re: The Ultimate OTL
PostPosted: 25 Jun 2020, 17:29 
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Joined: 13 Jan 2018, 21:33
Posts: 313
Location: australia
Nice looking effect on the aluminium.

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 Post subject: Re: The Ultimate OTL
PostPosted: 26 Jun 2020, 12:06 
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Woodo wrote:
Nice looking effect on the aluminium.


Thanks @Woodo ! ;)

Work is on progress - more pics soon, I hope... :blush: :)

-tbln

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 Post subject: Re: The Ultimate OTL
PostPosted: 27 Jun 2020, 15:16 
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Drilling finished, except the case-y-case basis mounting :

Image

Image

Image

-tbln

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 Post subject: Re: The Ultimate OTL
PostPosted: 30 Jun 2020, 14:11 
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Pre-assembly for defining the layout of the parts inside the chassis :

Image

-tbln

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 Post subject: Re: The Ultimate OTL
PostPosted: 02 Jul 2020, 17:08 
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The internal layout is on progress :

Image

Wait and See... ;)

-tbln

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