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Lovoltech LU1014 Power Jfet Group Buy
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Old 21st April 2021, 10:31 PM   #1
wg45 is offline wg45  United States
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Lovoltech LU1014 Power Jfet Group Buy
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With Zen Mod's recent news of the LuDEF amplifier concept, there has been renewed interest in the Lovoltech LU1014D power Jfet. Papa first used the LU1014D in the Zen Variations 8 & 9 and then in the First Watt F3.

Links-

First Watt F3

Zen Variation 8

Zen Variations 9

LuDEF

The LU1014D has long been out of stock and joined the list of power Jfets (SemiSouth R100) that we all want to buy and use but can't seem to find.

Luckily for us, a certain benefactor (initials are NP), has a stash of the LU1014D that he's agreed to make available to us through a group buy. A few members are working out the GB details currently- cost, shipping cost, sign up sheet, etc... and we expect to have the details on this thread shortly.

It will be an international group buy and we expect to have enough supply to fulfill demand.

If you haven't seen an LU1014D, I've attached a photo with an IRFP240 for comparison. They are tiny.

FAQ-

What can I build with the LU1014D? A- An F3, ZV8, ZV9, maybe a LuDEF. Schematics are all on line. Or maybe design your own amp.

Yeah, but there's no PCBs for those amps. A- True. Maybe we just need to sprinkle a few LU1014Ds around to get members to create a few gerber files. Seemed to work with the SemiSouth giveway. There's a few new Aleph J pcbs, plus renewed interest in the F1 and F2. Why not the F3?
Attached Images
File Type: jpg LU1014.jpg (740.2 KB, 2416 views)

Last edited by wg45; 18th June 2021 at 11:41 PM. Reason: Adding GB post info
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Old 22nd April 2021, 05:32 AM   #2
seanny is online now seanny  United States
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Lovoltech LU1014 Power Jfet Group Buy
More fringe spending!
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Old 22nd April 2021, 09:43 AM   #3
NicMac is offline NicMac  Italy
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Lovoltech LU1014 Power Jfet Group Buy
Quote:
Originally Posted by wg45 View Post
What can I build with the LU1014D? A- An F3, ZV8, ZV9, maybe a LuDEF. Schematics are all on line. Or maybe design your own amp.
Don't forget Patrick's DAO all-FET Class-A ZGF Headphone Amplifier
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Old 22nd April 2021, 09:53 AM   #4
mctavish is offline mctavish  Austria
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Yay!! I wanna play! LuDef sounds like a new rapper, must be cool!!
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Old 22nd April 2021, 10:10 AM   #5
Dennis Hui is offline Dennis Hui  Canada
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Lovoltech LU1014 Power Jfet Group Buy
Jeff posted the gerbers for his F3 pcbs here (post #654):

F3 Builders Thread
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We are fearless amplifier builders. A little heat doesn't scare us at all.
- NP 2002
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Old 22nd April 2021, 11:24 AM   #6
EUVL is offline EUVL  Europe
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The DAO SE is currently headphone amp rank #1 for us :
DAO - Original-Ton

And there are other (IMHO more interesting) power amp applications for the LU1014 than SEN V9, etc..
FirstWatt J2
Aleph J Schematic
Aleph J Schematic

Deep Surplus already ran out of stock. But Nelson has plenty :
Pictures of a >>GENUINE<< Lovoltech LU1014D Wanted!

Only that someone has to do proper matching and then distribution.

We also have a few hundred, pre-matched by Deep Surplus and then fine (curve-tracer) matched in a temperature-controlled Triode Cell.
But we are too expensive unless you want perfection.


Happy matching,
Patrick
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Old 22nd April 2021, 11:51 AM   #7
EUVL is offline EUVL  Europe
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And you can use existing J2 or Aleph J PCBs.
Just need a small adaptor board for the LU1014 triode cell.


Patrick
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Old 22nd April 2021, 05:07 PM   #8
codyt is offline codyt  United States
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Lovoltech LU1014 Power Jfet Group Buy
LU1014 in AJ sounds especially interesting to me
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Pearl II >> B1v1 / B1v2 / B1K / B1K79 / H2v2 / BA1FE / BA3FE / WBA18 / ACP-CT / Broskie-SRPP / K79-SRPP / Iron Pre / K2013-CT >> F4 / F5(K1530/J201) / F6 / AJ / AJSS / ZMJ2 / SONY VFET-SE / SONY VFET-PP / SB77B >> Eaton
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Old 22nd April 2021, 05:20 PM   #9
EUVL is offline EUVL  Europe
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> And you can use existing J2 or Aleph J PCBs.
> Just need a small adaptor board for the LU1014 triode cell.

Quick & Dirty.


Patrick

.
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File Type: png LU1014 Triode Cell.png (19.9 KB, 2332 views)
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Old 22nd April 2021, 05:23 PM   #10
codyt is offline codyt  United States
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Lovoltech LU1014 Power Jfet Group Buy
Nice, that's great!
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Pearl II >> B1v1 / B1v2 / B1K / B1K79 / H2v2 / BA1FE / BA3FE / WBA18 / ACP-CT / Broskie-SRPP / K79-SRPP / Iron Pre / K2013-CT >> F4 / F5(K1530/J201) / F6 / AJ / AJSS / ZMJ2 / SONY VFET-SE / SONY VFET-PP / SB77B >> Eaton
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