Pumpkin preamp - ordered by Steen , official making thread

off topic mob

hm.....

I open this thread as official building thread, hoping that it will be more tidy and organized than previous one ......

I just realized that this thread now have more pages than previous,hysteric, one ........

naah......

seems that we just can't escape of our nature ....... and I tried so hard to be on topic

:rofl:

but - what can be expected of ppl who use speaker and filter caps as output ones ..........
 
Zen Mod said:

In your boots- I'll try to play safe ...... ask for another opinion, maybe I dreked something .......
hehe - "maybe" ..............
:clown:
:hot:

edit :
Originally posted by Manu
iZMogood :
.........
And particularly the if -it-works-section is a very good place to learn .... at least for newby like me.
manu

I have few questions about Pumpkin/shunty :
1. regarding X-former : would a "2x30V" Trafo - which gives about 80V after bridge - be a good choice or not? Or should I rob my wife to buy a new one....

2. Regarding the electrolytics in Both Pumpkin and Shunty : is there any "crucial" places where it could be worth it to use some not-so-drekky ones ?

Manu
 
Manu said:

:hot:

edit :

I have few questions about Pumpkin/shunty :
1. regarding X-former : would a "2x30V" Trafo - which gives about 80V after bridge - be a good choice or not? Or should I rob my wife to buy a new one....

2. Regarding the electrolytics in Both Pumpkin and Shunty : is there any "crucial" places where it could be worth it to use some not-so-drekky ones ?

Manu


1. you need +/-36V at output , after some pretty big voltage losses ;I can't recommend any voltage bellow +/- 50V on input , that's absolute minimum, and just in case that your mains voltage have no sags of -10%

2. on output of Shunty and local ones in P .
 
Will be using this one:

ocore_800.jpg


200VA o-core, 42-0-42V. I'd be able to source some more of those, but they have 230V primaries only.