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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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PostPosted: 08 Mar 2021, 19:02 
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Joined: 03 Mar 2021, 21:47
Posts: 5
IT'S DONE! I'll do circuit trace testing and relay board testing tomorrow before I fire it up. Total build time 9 hours. Didn't have any issues so far., The instructions are fantastic. Along with the pictures its a pretty easy build.....We'll see how it goes when I turn it on!

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PostPosted: 09 Mar 2021, 15:07 
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Joined: 03 Jun 2020, 11:06
Posts: 118
Location: France
Nice Job @Rbertalotto ! 8-) 8-) 8-)

As I understand it : you purchased the whole amp under Kit form and assembled it, right ?

Question : what is the purpose of the 2 front Octal socket ? Test points ? Outputs-Inputs ?

-tbln.

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PostPosted: 09 Mar 2021, 17:26 
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Joined: 03 Mar 2021, 21:47
Posts: 5
Yes, This is a VTA Bob Latino kit. tubes4hifi.com
"Question : what is the purpose of the 2 front Octal socket ? Test points ? Outputs-Inputs ?"
These are a throwback to when they were actually inputs. But now they are just test points for Bias Adjustment.
I will be building a wood case for it and actual DC volt meters for bias adjustment will be incorporated so these will be removed.


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PostPosted: 10 Mar 2021, 10:08 
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Joined: 03 Jun 2020, 11:06
Posts: 118
Location: France
Fine ! :)

Did you made the paint of the transformers or was it stock done ?

-tbln.

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PostPosted: 15 Mar 2021, 16:44 
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Joined: 03 Mar 2021, 21:47
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I painted the Xformers with Rustoleum Copper Hammer Finish....

And I built a case for it. Meters are just pictures until meters arrive from china...

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PostPosted: 16 Mar 2021, 04:56 
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Joined: 09 Oct 2012, 19:43
Posts: 381
Location: Vancouver Canada
I love your cabinet style. Very nice work.
Also cool you painted the top of the cap.
It does give the visual picture more
balance and brings it all together for the eyes.


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PostPosted: 22 Apr 2021, 05:49 
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Joined: 03 Mar 2021, 21:47
Posts: 5
NOW, it is REALLY finished.....The final cabinet with 0-1v meters for bias adjustment. Relocated level control and power button. This thing sounds amazing. Absolutely zero noise. This was my largest concern as other tube amplifiers I have had were always a little noisy. Drives my Magnapan MMGs wonderfully......Couldn't be more pleased.

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PostPosted: 22 Apr 2021, 07:11 
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Joined: 02 Sep 2008, 14:34
Posts: 531
Location: Rochester, NY
Love the case, well done

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Cheers, Alan
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Dennis Had Fire-Bottle | Bottlehead Quickie | Sony Changer | VPI Scout | CainTuck OB


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PostPosted: 22 Apr 2021, 07:51 
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Joined: 13 Feb 2013, 11:02
Posts: 55
Location: Canada
Well done. The wood base looks way better than the stock "Dynaco" chassis.
One thing that has been bothering me is that Latino left the two prong power cord, and the incorrect (by today's safety standards) wiring of the fuse holder and power switch.
I've seen two examples of this amp recently. One had a very live chassis, the other was fine.

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DTS Audio Electronics
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