Hope it's ok to post in English, I've been reading on here for some time using Google Translate..
Some back story: My friend has some OA5 typ2, and I fell in love with the sound - it's like the wall behind the speakers isn't there - nothing else like it.
So I read on carlssonplanet.com, and eventually managed to find some damaged OA-116 in the USA. I imported them to the UK and fixed the rotted foam edges.
Since then unfortunately I've never really been 100% happy with them - they never really recreated that 'magic' Sonab sound I was looking for, and they seem weak in the bass (always need the 'loudness' control on, or bass turned up a little).
Maybe this is partly because of some extra damage that happened in transport to the UK: one of the 16ohm tweeters makes no sound at all, and the other is very very weak..
So I was hoping for some Carlsson Illuminati advice, and some help deciding what to do

so,
1: Are there some things I can try before spending money?
- Maybe try different jumper positions for the bass and treble adjustment..
Unfortunately the manual doesn't say what the positions are, only "potentiometer 50dB" - does anybody here know which one is +50, -50, and What is your recommendation for the setting?
- What about placement, is it bad?
Photo below - the right one is close to the corner, which I remember is not recommended in the manual - is it a big problem? I guess distance from the wall makes a difference too..
- Carlssonplanet talks about a Stig Carlsson recommended modification (change in tweeter position I think) - I have requested details.. Is this change recommended?
2: Can anyone comment on listening of the grafpro upgrade kits? (carlssonkult.se) Either the 'better bass' or upgrading to T-22, or both..
Thanks in advance for any help and advice, from an English Sonab fan,
Dan

(normal sitting position is about where the camera is)