Ibanez SR mod question

[mastabi]

Hello everyone! Maybe similar thread exists but i didn't find, sorry) Bought Ibanez SR305EB - good bass, i love it.
On Ibanez spare parts site I found that almost all SR series used one single type of preamp. The Prestige series has mid frequency select switch (3EMM247-SB) which I don't have on board of mine. It can be easily installed but it's very hard to get one in Ukraine i decided to make it myself.

Maybe someone has wiring diagram of this switch or can make close up photo to see the wiring? Any help would be great.
Thanks in advance

 

[robert43]

Have you tried emailing Ibanez?

 

[robert43]

big singles on Ibanez pre-amp (EQB-3SC) | cumi laut try this

 

[Zooberwerx]

big singles on Ibanez pre-amp (EQB-3SC) | cumi laut try this

Nice! This looks like my 1405. The mid-freq switch is 250 / 600 only. I believe the newer models have a 3 position switch (250-500-800?).

Riis

 

[mastabi]

big singles on Ibanez pre-amp (EQB-3SC) | cumi laut try this

Thanks, robert43, almost the same drawing i received from Ibanez. I cannot figure out is there any capacitor installed and what are their capacities. Seems like it has to be there. Here's what I have found though it's not ibanez but something similar:

 

[Killed_by_Death]

mfd = microfarad (μF)
there are at least 3