Bardamu

U47 with ef12 schematic
« on: October 23, 2020, 06:02:23 PM »
Anyone have the Andreas Grosser (or any other) u47 type circuit based on the ef12 tube? Preferably with remote pattern switch.

I can't find it anywhere.

Thanks



vitopower

Re: U47 with ef12 schematic
« Reply #2 on: October 24, 2020, 10:23:54 PM »
ef12 is different pinout and operating point from the ef14 at tab-funkenwerk though, be careful! 

Some great info here

http://www.moxtone.com/mU47_U47_part3.html

Bardamu

Re: U47 with ef12 schematic
« Reply #3 on: October 26, 2020, 03:06:05 PM »
Thanks, but I'm specifically looking for a schematic around the ef12. It was posted in a topic from a few years back, but the link is dead.

rafafredd

Re: U47 with ef12 schematic
« Reply #4 on: November 02, 2020, 11:14:09 PM »
Long time ago I used to be kind of a "librarian" in this place...

http://img.photobucket.com/albums/v283/jazz347/47-inspired%20mic%20build/EF12_47_11.png

rafafredd

Re: U47 with ef12 schematic
« Reply #5 on: November 02, 2020, 11:16:15 PM »
There's another one, but I don't know where I got it from.

Bardamu

Re: U47 with ef12 schematic
« Reply #6 on: November 05, 2020, 08:28:49 AM »
Great, thx!

That second one you might have gotten from this (dead) link I talked about earlier:

http://www.xaudia.com/omnip/Mics/STU47/STU47schemo.png

Was posted in a thread called "Insight into "U47-inspired" with EF12 tube?"

However, think I'll go with the first one.

Gus

Re: U47 with ef12 schematic
« Reply #7 on: November 06, 2020, 07:15:47 PM »
IIRC there was one with 120VDC and -6VDC power supply with fixed bias


 

Related Topics

  Subject / Started by Replies Last post
3 Replies
2350 Views
Last post June 27, 2004, 10:40:44 AM
by sismofyt
20 Replies
4354 Views
Last post June 25, 2005, 03:13:08 AM
by chriss
183 Replies
52536 Views
Last post June 27, 2013, 02:16:51 AM
by zebra50
0 Replies
1438 Views
Last post December 01, 2011, 04:43:41 AM
by iprovlek