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B1 Rev. 2
B1 Rev. 2
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Old 6th January 2017, 08:04 AM   #11
Zen Mod is online now Zen Mod  Serbia
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B1 Rev. 2
analyze

what can happen ?
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Old 6th January 2017, 10:34 AM   #12
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Quote:
Originally Posted by vdi_nenna View Post
This cool schematic can be found in the middle of two threads.
I though it should be easily found.
Good idea.
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Old 6th January 2017, 11:45 AM   #13
wdecho is offline wdecho  United States
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I have built both the R1 and R2. I much prefer the R2 version. I use the R2 version for my FW builds not needing any gain from a pre with my horns. An easy perfboard build. I will add the voltage recommendation of Papa as being a 24V switcher which I am using without noise. If you are a follower of the philosophy of less is better than this in theory should leave less of a sonic signature than say the BA-3 pre. I also have the BA-3 pre and I can enjoy it's sound as well. Right now I lean more to the LSK pre for a pre with gain but it is probably more of it being a newer build. Builders have a tendency to favor a new child, at first anyway.

Last edited by wdecho; 6th January 2017 at 11:55 AM.
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Old 6th January 2017, 12:39 PM   #14
wdecho is offline wdecho  United States
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I should add that I have both the BAF LSK version and I also recently built Juma's LSK version. Both very nice with a slightly different flavor.
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Old 6th January 2017, 12:42 PM   #15
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Quote:
Originally Posted by Zen Mod View Post
analyze

what can happen ?
- Builder accidentally shorts an output to GND

- Builder uses shielded but slightly capacitive cable.
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Last edited by jean-paul; 6th January 2017 at 12:46 PM.
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Old 6th January 2017, 02:33 PM   #16
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not critical
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Old 6th January 2017, 02:44 PM   #17
vdi_nenna is offline vdi_nenna  United States
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Hey, regarding R101 and 102. They are for switching thumps?

L2 is an LED?

Also, for the power supply section, that's a virtual power supply correct?

Just want to clear these things up before this thread gets too deep.

Thanks,

Vince
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Old 6th January 2017, 03:07 PM   #18
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yup
yup
GND is virtual prior to connecting PSU to voltage divider ...... then GND is no more virtual

as I'm always saying' - GND is state of mind
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Old 6th January 2017, 03:20 PM   #19
vdi_nenna is offline vdi_nenna  United States
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Last but not least- C2 and C3 should be the same. 3300uF is fine.
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Old 6th January 2017, 03:29 PM   #20
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Yep
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