JBB

Redd 47 Dual - Tube Preamplifier
« on: July 12, 2017, 01:58:11 PM »
Redd 47 Dual - Tube Preamplifier

The next version of the 47th preamp in dual version.

The idea was not just to make another copy, but to create something other.
On the set this time, I was guided to a moderately modern sound.
Also, the topology of the project was radically revised.

Photos: http://jbb.ru/47-2/

Schematic: http://jbb.ru/schematics/47-2-shem.htm

Layout: http://jbb.ru/schematics/47-2-layout.htm




Удачи!


ilfungo

Re: Redd 47 Dual - Tube Preamplifier
« Reply #1 on: July 12, 2017, 02:49:43 PM »
Great work!!!

ruffrecords

Re: Redd 47 Dual - Tube Preamplifier
« Reply #2 on: July 12, 2017, 06:28:33 PM »
Also, the topology of the project was radically revised


Удачи!

In what way was the topology 'radically revised'??

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Re: Redd 47 Dual - Tube Preamplifier
« Reply #3 on: July 12, 2017, 07:11:41 PM »
In what way was the topology 'radically revised'??

Cheers

Ian

It seems to be a fixed gain solution with pre and/or post amp attenuation? The rest is original REDD47 as far I can see. Nice work, very clean!

JBB

Re: Redd 47 Dual - Tube Preamplifier
« Reply #4 on: July 12, 2017, 07:48:20 PM »
In what way was the topology 'radically revised'??

Cheers

Ian

Layout topology

ruffrecords

Re: Redd 47 Dual - Tube Preamplifier
« Reply #5 on: July 13, 2017, 02:40:35 AM »
Layout topology

Ah, that makes sense; I could not see any  significant schematic changes.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Zjcc56

    Vermilion, Ohio.... Near Sandusky Yes there's an amusement park there
  • Posts: 34
Re: Redd 47 Dual - Tube Preamplifier
« Reply #6 on: November 11, 2017, 10:00:13 PM »
What are the specs on the power transformer you used for this?
There are known unknowns,
and unknown unknowns...


Re: Redd 47 Dual - Tube Preamplifier
« Reply #8 on: November 09, 2018, 09:00:08 AM »
Biutiful.