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Lovoltech LU1014 Power Jfet Group Buy

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#221
Added my name to the new spreadsheet for 4 pairs of the mounting boards.

Just out of curiosity... have there been guidelines established regarding sale limitations of the donated transistors?

Last time Papa Pass donated a couple bags of these out to the DIYAudio community I think everybody got two pair...those were not matched.

He has never had an issue with non matching transistors for the F3...although I know greedy boyz love to have their transistors matched.

I have only breezed over the LuDef thread...I’m assuming that’s where all this interest in matching originated?

I’m perfectly happy to build an F3 with unmatched transistors...did that with my F2J.

Having enough matched for a LuDef I assume is the goal?
 
#222
chromenuts said:
Added my name to the new spreadsheet for 4 pairs of the mounting boards.

Just out of curiosity... have there been guidelines established regarding sale limitations of the donated transistors?

Last time Papa Pass donated a couple bags of these out to the DIYAudio community I think everybody got two pair...those were not matched.

He has never had an issue with non matching transistors for the F3...although I know greedy boyz love to have their transistors matched.

I have only breezed over the LuDef thread...I’m assuming that’s where all this interest in matching originated?

I’m perfectly happy to build an F3 with unmatched transistors...did that with my F2J.

Having enough matched for a LuDef I assume is the goal?
Click to expand...

The Pass Stash devices are being matched by me. Most of the devices will become matched pairs with 2% or better agreement of Vgs at 1.5A Ids. There will some stragglers that people can obtain as unmatched parts.

I do not have a hard count of the number of parts that were sent to me. I think it is around 400 pcs. Don't quote me until I have a confirmed count.

There are confirmed good low cost verified LD1014D in Ali express. The Ali Express parts are easier to mount to the group buy adapter board than the Pass stash parts.

The idea is one pair per participant from the Pass stash. If there are lots left over, we can have another round.
 
#223
MS adapter PCB for LU1014D interest list:

woofertester 2 pair
metallicus69 4 pair
e_fortier 2 pair
OtisCampbell 2 pair
GnuB 2 pair
Franzm 4 pair
Blek Stenna 2 pair
Bas Horneman 3 pair
dBel84 2 pair
Tagheuer 2 pair
JimS 2 pair
grataku 4 pair
SOelker 2 pair
1543 2 pair
Cinco 3 pair
pfdavid 4 pair
Samuel Jayaraj 4 pairs
BRN 2 pairs
mordikai 4 pair
Skip Pack 4 pair
Malvin 3 pair
puijkh 2 pair
davidjt 2 pairs
jwjarch 3 pairs
outriding 2 pairs
alazira1 4 pairs
Icarium 4 pair
BEYoung 4 pair
hifibluedevil 2 pairs
JBdV 4 pairs
lpolyakov 2 pairs
vitalica 4 pair
DosenZorn 2 pairs
JimS 3 pair
wcwc 2 pairs
badrisuper: 2 pairs
tubesguy: 2 pairs
Kokanee: 2 pairs
manniraj: 4 pairs
Dr_Strangelove: 3 pairs
meanie: 2 pairs
Quantensprung 6 pairs
Rush 4 pairs
PierreQuiRoule 2 pairs
Arthur 10pairs
Peppennino 2 pairs
poseidonsvoice 2 pairs
EmeryBB 2 pairs
pinnocchio 2 pairs
ernesternest 2 pairs
hirscwi 2 pairs

total: 148 pairs
_______________
 
#224
@wg45 - I haven't "signed up" b/c I have not seen that you've requested that any of us do so. However, if you are limited in the number of parts you can offer, or are planning to use this list for any type of priority, please let us know. In the interim, I will wait until you let us know how and when to sign up.
 
#225
ItsAllInMyHead said:
@wg45 - I haven't "signed up" b/c I have not seen that you've requested that any of us do so. However, if you are limited in the number of parts you can offer, or are planning to use this list for any type of priority, please let us know. In the interim, I will wait until you let us know how and when to sign up.
Click to expand...

I understand. We've been trying to puzzle out how to get the GB set up when we expect a limited amount of matched pairs but the total number is still unknown. (Woofertester has been working hard at matching but we still don't have a total count of matched pairs. )

As Woofertester has said earlier today, I think it's going to be one pair person. Most likely we will have some unmatched pairs, too. I think we can count the PCB signups so far towards a pair.

I'll update the spreadsheet (asap) and add the current list to it with columns for LU1014D and PCBs. Please add yourself to the posted list, while I complete this task. Some folks might need to update the PCB count with the news of the one pair person.

The good news is that the LU1014D and LD1014D are available on Ebay and Ali Express. No guarantees, but testing of FETs bought online seem to be genuine. (please use your normal common sense when ordering- some links have been posted to sellers already.)
 
#226
Thanks for the explanation woofertester.

What you’re doing is very generous.

I can see already people are unsure whether to use the spreadsheet or cut and paste the list.

Perhaps the first post could be edited with instructions so there is consistency?

Maybe add links to the known good sources of the LU1014D there for those looking for more than a pair?
 
#227
@wg45 - Thanks for the reply. Totally understand. Whatever works best for you all. All the efforts to bring this to life are appreciated.

MS adapter PCB for LU1014D interest list:

woofertester 2 pair
metallicus69 4 pair
e_fortier 2 pair
OtisCampbell 2 pair
GnuB 2 pair
Franzm 4 pair
Blek Stenna 2 pair
Bas Horneman 3 pair
dBel84 2 pair
Tagheuer 2 pair
JimS 2 pair
grataku 4 pair
SOelker 2 pair
1543 2 pair
Cinco 3 pair
pfdavid 4 pair
Samuel Jayaraj 4 pairs
BRN 2 pairs
mordikai 4 pair
Skip Pack 4 pair
Malvin 3 pair
puijkh 2 pair
davidjt 2 pairs
jwjarch 3 pairs
outriding 2 pairs
alazira1 4 pairs
Icarium 4 pair
BEYoung 4 pair
hifibluedevil 2 pairs
JBdV 4 pairs
lpolyakov 2 pairs
vitalica 4 pair
DosenZorn 2 pairs
JimS 3 pair
wcwc 2 pairs
badrisuper: 2 pairs
tubesguy: 2 pairs
Kokanee: 2 pairs
manniraj: 4 pairs
Dr_Strangelove: 3 pairs
meanie: 2 pairs
Quantensprung 6 pairs
Rush 4 pairs
PierreQuiRoule 2 pairs
Arthur 10pairs
Peppennino 2 pairs
poseidonsvoice 2 pairs
EmeryBB 2 pairs
pinnocchio 2 pairs
ernesternest 2 pairs
hirscwi 2 pairs
ItsAllInMyHead - 1 Pair (noting 1 pair limit previously mentioned)

total: 149 pairs
_______________
 
#230
I’m not so sure the google sheet is the way to go. What’s wrong with a list as posted directly? We can see and self correct for errors much easier and it helps to drive interest and people can see at a glance what the status is. This is a GB thread - not a technical discussion thread, the list IS the data and point of the thread. At this point I would assume everyone who put on the name for the PCB adapter is entitled to 1 pair of the devices Mr Pass has donated and graciously matched by Woofertester. The extra PCBs they requested in the GB will be extras for a future build with other LD/LU1014D’s. Given that the AliExpress ones have been confirmed by several people to measure correctly, it’s a good chance they are genuines. Given that there are thousands available at 17cents each - are we where the 2SK170BL was 20 years ago? Will the hoarding begin? I hope not - so that these devices remain affordable for others to enjoy without resorting to getting them for $40/pair in the future.
 
#237
I didn't mean to cause confusion or any ill thoughts either. However, from reading the posts from the OP and those directly assisting, I'd simply suggest that we anxious folks wait for them to actually provide the guidance vs. speculate and "help". There seems to be plenty of interest. Now, we can politely wait for them to collect their thoughts, conduct their work, and patiently await instruction.
 
#238
The problem is that the OP was about the GB to distribute the LU1014D devices that NP has offered up - there is clarity with that - wait for further instructions, likely to be June time.

The complication is that a second GB has been introduced for the isolation boards and as far as I can tell that is what the list/spreadsheet is (mostly) about. I say mostly because it seems to have been assumed that everyone who has requested isolation boards will want to be in the LU1014D GB. There doesn't seem to be an owner for the isolation board GB - X has facilitated the boards but I think is far too busy to handle it and the OP has more than enough on his plate with testing and matching the devices.

I've run GBs before but as I'm in the UK I don't think I'm geographically best placed to handle this one.
 
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