Wade & Lee Ann welcome to irv2 and the Newmar forum.
Congrats on your KSDP many safe and happy miles.
Your sub-woofer maybe under your kitchen sink cabinet or in a table cabinet next to your recliner, dependent on what options you may have.If you have the surround sound option you will have three recessed spk's in ceiling over drivers & pass seats and two in rear in kitchen area. These spk,s will only work when playing thru DVD amp using movies of FM radio, CD play back with DVD amp.
You will have two other spk's up front off your FM-AM-CD radio on dash with spk's muiltibled in kitchen ceiling. In your bedroom you will have two spk's off dash radio that can be adjusted by the FAD control on dash radio and also have switches on wall to shut them off when you want quite.
Enjoy the forum and when you want some KARMA for this forum let us know, do post often.