They are two new products from Sakura.
http://www.sakurasystems.com/products/koreeda.html
Maybe it will be easy to make a copy of the preamp ?
Can anybody identify the components in the preamp ?
As far as i can see they use:
1. Small transformer from Talema/India with 2x115V input and two 2.5VA 15V AC outputs
2. Two rectifiers composed from four normal diodes
3. Two bigger caps, probably 3300/25V Panasonic TS-HA?
4. 78xx and 79xx regs with two small electrolyt caps - decoupling caps ?
5. Preamp section with adXXX opamps ?
6. Small red tantalum caps close to opamps ?
7. Around opamps they are four resistors
8. One polystyren/aluminium input? output ? cap from BC ?
Can anybody identify more details and maybe create the schematic of this small pre ?
Who knows, maybe it sounds very good.
Cheers, sinski
http://www.sakurasystems.com/products/koreeda.html
Maybe it will be easy to make a copy of the preamp ?
Can anybody identify the components in the preamp ?
An externally hosted image should be here but it was not working when we last tested it.
As far as i can see they use:
1. Small transformer from Talema/India with 2x115V input and two 2.5VA 15V AC outputs
2. Two rectifiers composed from four normal diodes
3. Two bigger caps, probably 3300/25V Panasonic TS-HA?
4. 78xx and 79xx regs with two small electrolyt caps - decoupling caps ?
5. Preamp section with adXXX opamps ?
6. Small red tantalum caps close to opamps ?
7. Around opamps they are four resistors
8. One polystyren/aluminium input? output ? cap from BC ?
Can anybody identify more details and maybe create the schematic of this small pre ?
Who knows, maybe it sounds very good.
Cheers, sinski
This is the link for preamp picture :
http://s7.photobucket.com/albums/y252/praganj/?action=view¤t=2.jpg
I am completely electronic newbie and have no to much knowledge about electronics. In the last days i was just reading about opamp based pres and looked carefully on Kore Eda pre.
I found the SWCAD software from LT and i created a circuit, which could be the pre, but i am not sure about it.
http://s7.photobucket.com/albums/y252/praganj/?action=view¤t=koreedapre1.jpg
Can anybody help and say if it is OK ?
What about
R1=2K
R2=100K
R3=1K
R4=2K
C1=10uF
C2,C3 4.7uF
Any ideas ?
sinski
http://s7.photobucket.com/albums/y252/praganj/?action=view¤t=2.jpg
I am completely electronic newbie and have no to much knowledge about electronics. In the last days i was just reading about opamp based pres and looked carefully on Kore Eda pre.
I found the SWCAD software from LT and i created a circuit, which could be the pre, but i am not sure about it.
http://s7.photobucket.com/albums/y252/praganj/?action=view¤t=koreedapre1.jpg
Can anybody help and say if it is OK ?
What about
R1=2K
R2=100K
R3=1K
R4=2K
C1=10uF
C2,C3 4.7uF
Any ideas ?
sinski
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