CarlssonPlanet

Have forgotten what the previous owner told me about the different tweeter levels as controlled by the u-shaped jumper...anybody know? thanks!

Pretty please..??

The jumpers are there to fine-adjust the level of the tweeters. The reason is that the quality of the tweeters (MT20) was a bit erratic, so the Sonab factory used the jumpers to correct the level and they also matched speakers into pairs to perform as even as possible.

You hopefully find a red spot under one of the jumper positions, which is the factory pre-set. Don't change that. If you want to adjust the treble it is better to use the tone controls on your (pre-)amplifier.

Björn

http://www.carlssonplanet.com/forum/gal ... age_id=861

I think that the jumper and the dot are blue.
http://www.carlssonplanet.com/forum/gal ... age_id=638

Yes, i have the blue dot, so that is the factory pre-set then eh?

Well, jumpers and dots on my OA12 are red. Sorry I not remembered when posting that the jumpers also could be blue.

Björn

Mine have the blue jumpers but on one of the speakers there is a red dot in a corner...hybrid maybe? Will be trying them in a corner here shortly and i would guess to have the tweeters aimed along the long wall and not the immediate corner wall..correct?

It´s correct when it sounds good.

The red dot in the corner indicates how the speakers should be turned in different positions and is marked with an arrow in the pictures in the manual.

Manual: http://user.faktiskt.se/schmutziger/son ... %20Fra.pdf