While modifying my 4343 xovers last night I figured out the following strange thing:

When driving my 4343 at high level (appr. 50 - 100 Watts) WITHOUT the Bass conected. My amp protection circuit switched the amp on and off.
Is there an impedance problem when not all speakers connected with the filter?

I can't test with the bassdriver next time as I have to wait until the neigbours are out