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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 24 Feb 2018, 05:24

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PostPosted: 08 Feb 2018, 00:01 
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Joined: 09 Oct 2012, 19:43
Posts: 266
Location: Vancouver Canada
The issue with TTBL's is the difference between "SIG gnd" and "gnd shield". They are both gnd but should be looked at as being two separate connections which <only> get connected at the phono input point.


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PostPosted: 10 Feb 2018, 00:02 
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Joined: 18 Jan 2017, 18:55
Posts: 37
Thanks, I'll give it a "crack" and explore the TT in the next week or so. Hope I don't hear any small parts tinkle inside it.


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PostPosted: 19 Feb 2018, 00:45 
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Joined: 18 Jan 2017, 18:55
Posts: 37
Just an update
I disassembled the tonearm and removed the black ground wire from the signal ground. I then added a new earth ground from earth ground on the Groovewatt and soldered this to the black ground wire from the tonearm. Hum is ~80% better, I may need to do this to the power supply also but for now I am going to enjoy the music. Wow those are some really small delicate wires, thanks for the warning to be cautious.


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