Burning Amp BA-3b (Balanced)

[generg]

I do not want my scheme made out of pixels, I want a straight line..........

[Bksabath]

Hey Dudes Pixies or Pixels or what not
A) tanks for Drowings and such
B) 2SK389 and 2SJ109 where one mere mortal can get those?

Sems that LSK170 is the only decent component in production and still waiting for P chanels.

PS Chester UK in the midle or there about (not other side of Penines to cold there and road to get to is full of poth holes)
Not Jester my sense of humor does not grant me nor justify that priviledge.

PSS Is the obficialy certified and much loved Court Jester back from hollidays ?

[Nelson Pass]

Originally Posted by Bksabath

Sems that LSK170 is the only decent component in production and still waiting for P chanels.

You can still scrounge the Toshiba P channels, and the LS parts are on the way.

[Bksabath]

Decent suasages I can get plenty of choice and different armonic balance and dinamics.

Scrounging Jfets is much harder there is load of stuff that having started so late is realy difficoult loads of good stuff no longher in production in the past 2 years.

LS part soon is the best possible news.

Tanks for your imput

Al

[jacco vermeulen]

Al,

if you are in need of a couple of JFETs you can always shout to a neighbour on the other side of the pond.
(which would be me. invite for OT crew members only, btw)

[Bksabath]

Jacco

Realy apreciated will get in touch.

Just need to decide and plan will absolutley not waste and squander such a generous offer.

Tanks

[rolandong]

Would toshiba 2SK1530/2SJ201 work as drop-in replacement with BA3's non feedback design?

[AndrewT]

No, the Vgs is very different.

[JojoD818]

Originally Posted by Dzius

Just for another confirmation. On the BOM list of BA-3 front end I found:
Q1 N-Channel JFET Input 2SK170
Q2 P-Channel JFET Input 2SJ74
Q3 N-Channel MOSFET Output 2SK2013
Q4 N-Channel MOSFET Output 2SJ313
so I'm little bit confused. First 2SJ313 is P chanel type. Second are the Q3 and Q4 in correct position ? In other words according to schematic
Q3 should be 2SJ313 and Q4 = SK2013 ? Am I right ? There is always possibility to make an error when chosing between the two.

This has been corrected in the updated BOM. It should be up to replace the old one the soonest possible.

So sorry for the confusion.

[Jason]

Originally Posted by JojoD818

This has been corrected in the updated BOM. It should be up to replace the old one the soonest possible.

So sorry for the confusion.

New BOM is up in the store. Thanks Jojo!