LSK Line Stage Original Schematic BAF 2013 - diyAudio
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Old 3rd September 2014, 04:23 AM   #1
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Default LSK Line Stage Original Schematic BAF 2013

Where can I find the LSK Line Stage schematic? I see variations, but not the original.
Saw it in the BAF video.
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Old 3rd September 2014, 06:49 AM   #2
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freeze the veedeeo
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File Type: jpg LSK LS.jpg (53.5 KB, 426 views)
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Old 3rd September 2014, 12:24 PM   #3
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Thanks ZM. I was hoping someone already started a dialog on this preamp, but this is a good a place as any.

Thx

Vince
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Old 3rd September 2014, 09:17 PM   #4
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LSK pre - BAF 2013

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Old 3rd September 2014, 09:33 PM   #5
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Bottle, I know about that version.

Interested in the original only.
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Old 3rd September 2014, 09:37 PM   #6
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isn't 'nuff said in Papa's veedeeo ?

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Old 4th September 2014, 03:20 PM   #7
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Will this work for DC and bias adjustment?

Does the circuit call for 45V rails, like the veedeeo says?
I suppose there's a voltage drop across R4 and R5? It doesn't appear to drop with 1 resistor.

Thanks,

Vince
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Old 4th September 2014, 04:02 PM   #8
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I can't see that you really changed anything ;

clarify what you mean with "1 resistor"
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Old 4th September 2014, 04:16 PM   #9
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Quote:
I can't see that you really changed anything ;
Added the 5K pot and changed the 1k 3w to 1.5k...for DC and Bias adjustment.
Copied the placement from the F5. Nelson said it could be tweaked from almost anywhere in the circuit, so I chose there. Is it wrong?

Quote:
clarify what you mean with "1 resistor"
I was wondering if there was a voltage drop because the max voltage for the jfets is ~40v. I figured there needs to be a voltage drop.
Not that I would change the voltage but that it was already designed that way by Mr. Pass.
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Old 16th September 2014, 01:46 PM   #10
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Do you think the sk170 and sj74 pair need to be matched or all 4 jfets need to be matched?
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