@Miguel: very expensive setup for our needs. Good, sure, but more expensive than I like ;) Thanks anyway!
@orthikon: I have two cats. One of them is very well behaved, the other is still a kitten and loves to bite anything around her, specially cables. She has bitten many headphone cables, so running a three meter cord while we are watching some movie and falling asleep is too big a temptation for her :D
I've had to protect all cables in the house, specially audio cables because they're thin enough to be bitten through by the kitten! Fortunately she only bites and breaks cables belonging to expensive equipment, so I can save a pair of cheap headphones for my everyday use :D As for the JBL, I don't know if they're expensive enough to her likings 
Again, thanks for the advice. After testing them today for a longer time, I think I'll go with the JBL Duet. Not the best speakers around, but very good for the price, small and with enough power. I must confess I would have not bought them if I hadn't heard them, because I don't like the power/volume knob and the power adapter is too big, but after testing them I've changed my mind. A pity I cannot test more models :(