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Burning Amp BA-3
Burning Amp BA-3
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Old 20th December 2016, 11:05 PM   #2271
dimkasta is offline dimkasta  Greece
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That asymmetry was killing me...

I also splitted return currents, added provisioning for sensing regs and fixed a few more minor things

Here's a preview with flooded rectangles, so that they are more obvious

Burning Amp BA-3-screen-shot-2016-12-21-00-55-05-png

The fact that the pcb can be easily split in half got me thinking...

What if keep the input separate?
Could we try different stuff? Like two outputs driven by something from the iron family to add some SUSY flavor?
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Old 21st December 2016, 12:12 AM   #2272
Zen Mod is offline Zen Mod  Serbia
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Burning Amp BA-3
well , if by Iron Family you're insinuating ......... , then remember what I said for general approach and sane output swing

just make M2 and enjoy
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Old 17th October 2017, 12:06 PM   #2273
Dirk1 is offline Dirk1  Germany
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Hello,
I would like to build the BA3 as preamplifier.
My question to C3, my L'Amp 193 has 10yF as input capacitor.
Can I c3 with 10yF stock or I have to take another value.
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Old 17th October 2017, 01:35 PM   #2274
6L6 is offline 6L6  United States
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Burning Amp BA-3
Use 10uF in the output of the BA-3. It is being used to control DC offset on the output.

The L'amp capacitor is used to ensure that no DC is on it's input, regardless of what source you use.
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Old 17th October 2017, 02:32 PM   #2275
Dirk1 is offline Dirk1  Germany
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Thank you for your quick response.
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Old 21st October 2017, 04:16 PM   #2276
Russellc is offline Russellc  United States
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Burning Amp BA-3
Re reading all this is again giving me the BA3 itch. Or I should say, the BBA3. I will need to bite the bullet and by 2 more large deluxe 5 cases for the project, but I have the boards, jfets, and most of the pesky stuff already.

Rather than a BBA3 pre, I am slowly finishing a Shunty Pumpkin. It never stops...

Russellc
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Old 6th November 2017, 12:32 PM   #2277
First Watt Guy is offline First Watt Guy  Viet Nam
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Default BA1 + F4 bridged

I've found this picture from internet
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Old 9th November 2017, 07:18 AM   #2278
generg is offline generg  Germany
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Burning Amp BA-3
I would say F4 combined with a X.0 like FE, all balanced monoblocks?

I had a similar combination F4 + Pumpkin and it run marvelous!
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Old 9th November 2017, 07:53 AM   #2279
Zen Mod is offline Zen Mod  Serbia
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that one is something older with plenty of IRFs in preamp/FE stage

edit: now , when I blasted picture fully , I see JFet LTP , complementary ITF output , one IRF down probably for LTP CCS ...... but two 7815 and pairs of 2SK170 on sides

interesting concoction ......... though not made in a way I prefer
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Old 9th November 2017, 12:17 PM   #2280
generg is offline generg  Germany
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"pairs of 2SK170 on sides"


the X0 had two parallel K170 between the pot parts.

good old times.... :-)
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