R2 is clearly written , they are with later - 6N139 optocoupler
yours (2018) are first gen ( so to speak) with PC817 opto
yours (2018) are first gen ( so to speak) with PC817 opto
I have the 2019/R2 boards....
ZM..... Haven't been able to carve the time out to investigate why my right monoblock (left channel board), keeps roasting mosfets (which BTW tested okay after the fact? So they don't appear to be roasted afterall)—but in any event—3 times the right monoblock/left channel board has worked, played the sweet music... then suddenly spits 16VDC out the speak jacks after a couple of power cycles and moving it around the house (it seems).... since I can't quite get the full understanding of the schematic—at my current knowledge level... does this R1/R11 inappropriate mashup have the potential to explain my experience above—noted in past posts—seems like it does have something to do with DC offset when I follow the traces? (My R11 is not populated—using Cinemags)
ZM..... Haven't been able to carve the time out to investigate why my right monoblock (left channel board), keeps roasting mosfets (which BTW tested okay after the fact? So they don't appear to be roasted afterall)—but in any event—3 times the right monoblock/left channel board has worked, played the sweet music... then suddenly spits 16VDC out the speak jacks after a couple of power cycles and moving it around the house (it seems).... since I can't quite get the full understanding of the schematic—at my current knowledge level... does this R1/R11 inappropriate mashup have the potential to explain my experience above—noted in past posts—seems like it does have something to do with DC offset when I follow the traces? (My R11 is not populated—using Cinemags)
nope
error is ( looking at schm) at left side of Silmic, so in any case not connected to biasing and/or offset mechanism
in your case I would move SIT to other channel, to see is mistake going to move with SIT or it is something else
error is ( looking at schm) at left side of Silmic, so in any case not connected to biasing and/or offset mechanism
in your case I would move SIT to other channel, to see is mistake going to move with SIT or it is something else
Glad I check in occasionally. I still have not started my SissySIT project.
The issue doesn’t appear on my (older?) blue boards.
Also, there is different resistor numbering.
I’m pretty sure there might be a few other things I’ll have forgotten about and have to be careful to reread all the notes carefully more than once.
EDIT: LOL...I’m so slow
The issue doesn’t appear on my (older?) blue boards.
Also, there is different resistor numbering.
I’m pretty sure there might be a few other things I’ll have forgotten about and have to be careful to reread all the notes carefully more than once.
EDIT: LOL...I’m so slow
Attachments
btw. postal; service service these days is ........ really can't decide what to think - is it outrageous, or is it surprisingly effective , considering everything
5 weeks or so , between Serbia and USA; I mean - from wherever in Eu to USA .......
5 weeks or so , between Serbia and USA; I mean - from wherever in Eu to USA .......
Bottle,
That is a super cool build. The form factor is great and is so like some of the tube amps I’ve built. I would love to do something like that but have a young son, and know he would tough it.
That is a super cool build. The form factor is great and is so like some of the tube amps I’ve built. I would love to do something like that but have a young son, and know he would tough it.
thank you for saving me with these LEDs ....... it seems old age is definitely catching me, so I forgot to put LEDs, while dealing with that German guy, of whom I also didn't remember name ......
how it sounds ?
Well, they do need break in time. That being said, they are more controlled than the Singing Bush but not as big sounding. They are a bit more setback and lean.
They do need 100 hours to settle down. The Singing Bush changed quite a bit in the first 100 hr. So I’m going to wait to decide.
One strange thing, the Singing Bush plays quiet and sounds Great, the SissySIT is more like other amps and needs a bit of level for the sound to bloom.
My two cents,
🙂
They do need 100 hours to settle down. The Singing Bush changed quite a bit in the first 100 hr. So I’m going to wait to decide.
One strange thing, the Singing Bush plays quiet and sounds Great, the SissySIT is more like other amps and needs a bit of level for the sound to bloom.
My two cents,
🙂
Botte
I do think the Sissys are like a fine wine. They do age with time. I had them first and they were in my system for about 6 months before adding the Singing Bush. I still go back to the Sissys. It seems to get me more involved - more wanting to listen. Don't get me wrong - the SB is a great amp and I could easily live with it. I was thinking I should hook up the VFET2 your advice helped me to get up and running. As I recall it's not to shabby. I haven't really listened to it since adding ZM's IP (highly recommended IMHO
Looking forward to your further thoughts after a 100 hours or so hours of listening.
Best
Bob
I do think the Sissys are like a fine wine. They do age with time. I had them first and they were in my system for about 6 months before adding the Singing Bush. I still go back to the Sissys. It seems to get me more involved - more wanting to listen. Don't get me wrong - the SB is a great amp and I could easily live with it. I was thinking I should hook up the VFET2 your advice helped me to get up and running. As I recall it's not to shabby. I haven't really listened to it since adding ZM's IP (highly recommended IMHO
Looking forward to your further thoughts after a 100 hours or so hours of listening.
Best
Bob