My house is currently getting built now with speaker wires in the walls. The wires were put in today, however, there is a problem. I had the company prewire the house for a 5.1 setup but it seems like the wires are too short. The box is located maybe 4-5 in off the ground and is roughly 14-16 in. long. My speaker (Aperions) will be sitting on my 30 in speaker stand. As you can see, the length is too short My question is if the company decides not to rewire the wires for a greater length, can I solder or attach another piece of wire to extend it? Is that feasable or will it totally ruin the sound? Thanks in advance.