As i want to sit relaxed on my couch. I need a headphone cable of 6 meter (19 feet) . So looking in to make one myself. I see most cables has 4 or 8 cores. So its an uneven number. How do I have to divide the layout? L R and ground? Four cores on ground and two on L and R? And some thoughts on the gauge? Sorry if this is a noob question. But it's the first diy cable.