I have had some 10B's for many yeas being driven by Hafler's. I recently got the bug to get some decent stereo imaging (10B's are great at bass, but imaging isn't their specialty).
I got a set of SDA II's off Ebay. It seems that the right speaker cabinet is not working properly. Sound comes out of all of the drivers, but it's the same sound, meaning it doesn't have a stereo difference. Seems to be all right channel sound.
The left speaker cabinet seems to work fine. The right drivers (stereo drivers in the left cabinet) play the left channel sound and the left most driver (SDA) and tweet play the right channel sound.
Furthermore if I turn the balance all the way left, I get sound from the left cabinet stereo speakers (SDA's drivers are quiet), but no sound at all from the right cabinet.
If I turn the balance all the way right, I get sound from the left cabinet SDA driver and tweet and I get sound from the right cabinet stereo drivers.
Any idea what is going on?
Is that how they are supposed to work?
Oh, they are connected to an inexpenive HK AVR20 reciever.