Unless you have a very odd/exotic cable design that may pose problems if you cut it, you should have no problem at all. Sound quality will only be effected if you don't do a good job. If its expensive, factory terminated cable, it would probably be a good idea to send them back and pay to have it professionally.
If you end up doing it yourself, measure everything out first to see how much you will definitely need. Hopefully, you'll have a little left over. Practise on that first so you don't end up with 10 meters of weed wacker cable.
If you end up doing it yourself, measure everything out first to see how much you will definitely need. Hopefully, you'll have a little left over. Practise on that first so you don't end up with 10 meters of weed wacker cable.