ALPHA 52W BB GB interest list
Please edit and add your name and quantity desired and ceramic TO264 insulators if needed below. I will need at least 10 people to show interest before ordering.
Cost will be $60/pair (keep in mind they are beautifully designed big 240mm x 130mm, 2mm thick FRP with double-thick copper and ENIG finish). Shipping cost for a pair of boards in the US will be $8, Canada $17, and everywhere else is $24. Yes it high due to weight of the boards coming in at 10oz for the package. TO-264 ceramic insulator pads are $2/set of 4.
Please edit and add your name and quantity desired and ceramic TO264 insulators if needed below. I will need at least 10 people to show interest before ordering.
Cost will be $60/pair (keep in mind they are beautifully designed big 240mm x 130mm, 2mm thick FRP with double-thick copper and ENIG finish). Shipping cost for a pair of boards in the US will be $8, Canada $17, and everywhere else is $24. Yes it high due to weight of the boards coming in at 10oz for the package. TO-264 ceramic insulator pads are $2/set of 4.
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
vvs07 - 2 sets bb, 4 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
Last edited:
ALPHA 52W BB GB interest list
Please edit and add your name and quantity desired and ceramic TO264 insulators if needed below. I will need at least 10 people to show interest before ordering.
Cost will be $60/pair (keep in mind they are beautifully designed big 240mm x 130mm, 2mm thick FRP with double-thick copper and ENIG finish). Shipping cost for a pair of boards in the US will be $8, Canada $17, and everywhere else is $24. Yes it high due to weight of the boards coming in at 10oz for the package. TO-264 ceramic insulator pads are $2/set of 4.
I have to confess not seeing/knowing how to edit and post alongside the others wanting PCB
I would like to be added to the list.
drpro BB 1 set, 2 sets TO-264 insulator pads
Thanks
David
Alpha B.B. GB list:
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
vvs07 - 2 sets bb, 4 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
Alpha B.B. GB list:
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
vvs07 - 2 sets bb, 4 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
vvs07 - 2 sets bb, 4 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
Alpha B.B. GB list:
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
vvs07 - 2 sets bb, 4 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
markus22ch - 1 set bb, 2 sets TO-264 insulator pads
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
vvs07 - 2 sets bb, 4 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
markus22ch - 1 set bb, 2 sets TO-264 insulator pads
Alpha B.B. GB list
I was just testing the Alpha BB this morning to check for oscillations at 5Mhz as suggested by Keantoken as a possibility. No evidence of it, here is 39vpp into 8ohms and then zoomed into and around 20ns/DIV:
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
*vvs07 - 3sets bb, 6 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
markus22ch - 1 set bb, 2 sets TO-264 insulator pads
I was just testing the Alpha BB this morning to check for oscillations at 5Mhz as suggested by Keantoken as a possibility. No evidence of it, here is 39vpp into 8ohms and then zoomed into and around 20ns/DIV:
Last edited:
ALPHA BB GB update:
Schematic:
PCB Placement:
BOM is here.
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
*vvs07 - 3sets bb, 6 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
markus22ch - 1 set bb, 2 sets TO-264 insulator pads
Cambe - 1 set, 1 set of TO-264 insulator pads
Schematic:
PCB Placement:
BOM is here.
Last edited:
Hi X,
Just confirming that I received my boards and ceramic pads.
Definitely sweet looking boards!
Thanks for organising the GB!
PS - Thought I'd add some paraphernalia from the Commonwealth Games that my home city just hosted as the title seemed fitting
Just confirming that I received my boards and ceramic pads.
Definitely sweet looking boards!
Thanks for organising the GB!
PS - Thought I'd add some paraphernalia from the Commonwealth Games that my home city just hosted as the title seemed fitting
Attachments
pelayostyle - 1 set
pcgab - 1 set bb, 2 sets TO-264 insulator pads
*vvs07 - 3sets bb, 6 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
markus22ch - 1 set bb, 2 sets TO-264 insulator pads
Cambe - 1 set, 1 set of TO-264 insulator pads
ekidnah09 - 1 set bb, 1 set of TO-264 insulator pads
pcgab - 1 set bb, 2 sets TO-264 insulator pads
*vvs07 - 3sets bb, 6 sets TO-264 insulator pads
emynet - 1 sets bb, 2 sets TO-264 insulator pads
DrPro - 1 set bb, 2 sets TO-264 insulator pads
wtl - 1 set bb, 2 sets TO-264 insulator pads
yoaudio - 1 set bb, 2 sets TO-264 insulator pads
markus22ch - 1 set bb, 2 sets TO-264 insulator pads
Cambe - 1 set, 1 set of TO-264 insulator pads
ekidnah09 - 1 set bb, 1 set of TO-264 insulator pads
For the folks getting the ceramic insulators, 1 set is 4 pieces enough for a stereo amp. Seems like people are ordering double sets. There are 20sets in the above order and I do not have enough left. So I might have to reduce your insulator orders to 1 set per pair of board.
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