Hello Victor,
I have some questions about the Lundahl SUT kit.
First, what is the purpose of what looks like a socket and shorting jumpers. The label to the right seems to imply that it might provide a way of switching from transformer secondaries grounded to transformer secondaries not grounded:
Next question -- is there a schematic available for the completed circuit? Not being able to see the traces of the PCB it's not possible to figure out what is and isn't grounded. I prefer a SUT circuit like this:
Rather than this:
(Attribution for the two schematic drawings to Alexey Korf from his excellent blog at https://korfaudio.com/blog99 )
Thanks!
Steve Z
I have some questions about the Lundahl SUT kit.
First, what is the purpose of what looks like a socket and shorting jumpers. The label to the right seems to imply that it might provide a way of switching from transformer secondaries grounded to transformer secondaries not grounded:
Next question -- is there a schematic available for the completed circuit? Not being able to see the traces of the PCB it's not possible to figure out what is and isn't grounded. I prefer a SUT circuit like this:
Rather than this:
(Attribution for the two schematic drawings to Alexey Korf from his excellent blog at https://korfaudio.com/blog99 )
Thanks!
Steve Z
Attachments
Great! Thanks so much Victor.
Nice design -- the user has a choice of tying primary side to ground, secondary side to ground, both or neither.
Steve Z
Nice design -- the user has a choice of tying primary side to ground, secondary side to ground, both or neither.
Steve Z
LL1931Cu
Furutech FP-900 2 pairs
1877 24K Gold Plated Terminal 1 pcs
Total $565
Hammond 1590xx $20
Furutech FP-900 2 pairs
1877 24K Gold Plated Terminal 1 pcs
Total $565
Hammond 1590xx $20
Lundahl LL1931AG Kit $1850
- LL1931copper X2 + PCB + switch
- WBT RCA Sockets 0244 2X Red + 2X White
- 4 x HEX M3-7 screw
- 1 FT copper-vcap 24 AWG 1ft
- Pure wool damping material
- CMC metal enclosure with 4 footers
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All of this to listen to Hotel California? Anyway, the price is peanuts compared to AN SUTs Nice touch with the wool damping. Hashimoto does that too . I bet they listen to hotel California to test their gear too. I mean , it's probably overkill reference point for American customer anyway .
there is no doubt at all.
LL1931Ag with cmc box better than a lot expensive SUT in the market..
.
LL1931Ag with cmc box better than a lot expensive SUT in the market..
.
