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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: 10 Dec 2020, 22:20 
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Joined: 06 Dec 2020, 22:33
Posts: 4
Hello all! Just new to the forum and would like to share my first handmade passive preamp! In fact, before that I've also shared my work through several diy audio forums, but sadly just very few of them could understand the principles. Wish to meet those here!

Lots of fun to make it successfully amplifying and tuning sound quality in thick bass or accurate positioning Attached below with some images about the attenuator, transformer, casework etc., you guys may also take a look at the schematic for the whole circuit. Those attenuator and transformer are handcrafted and manufactured from my hometown Hong Kong, which I really appreciate the sound quality and technology applied.

I am looking forward to discussing my work with all of you, especially the core - attenuator and transformer, feel proud of my hometown! Just ask me anything about it.


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PostPosted: 11 Dec 2020, 13:53 
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Joined: 06 Apr 2009, 10:08
Posts: 1748
Location: US Pacific Northwest
Curious. Schematic?

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Matt
It's all about the Glass!
http://www.CascadeTubes.com
Cascade Tubes Blog


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PostPosted: 11 Dec 2020, 21:41 
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Joined: 06 Dec 2020, 22:33
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Attached in post #1 ;)
You'll find there are some differences between the schematic and the actual work. In fact I switch the RCA for different input selections.


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PostPosted: 22 Dec 2020, 21:57 
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Joined: 06 Dec 2020, 22:33
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Trying to put more images here:


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PostPosted: 06 Feb 2021, 00:38 
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Joined: 17 Feb 2010, 20:10
Posts: 20
I can‘t download the schematic, but from observation the pre appears to be totally conventional, with the user having chosen to directly wire all primary options (taps) rather than switch them.


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