Just moved from an old HTIB to an AVR+speakers (5.1). The question is around wiring - more specifically, around wire thickness.
I already have wires laid behind the walls from the old HTIB. Those leading to the front & center are 1.5 mm.sq. (AWG 16). Those leading to the rear speakers are thinner (no labeling, but I would estimate AWG 18, so around 1 sq.mm.).
The AVR can put out 125W per channel and the speakers are rated for 150W continuous (50-300W variable) output. Speakers are 8 Ohm and the AVR recommends 6-16 Ohm.
The cable length to the front speakers is ~15 meters (50 feet), the rears are much closer (3-4m / 10-12 feet).
The big question is: can I use the existing cables (particularly for the front/center, I could redo the wiring for the rears) without fear of frying either the AVR or the speakers (or melting the wires)? As you can tell, I am a total newbie when it comes to this.