Kevin, my new basement listening room is 8x15x19, so I may be able to offer some advice. Re standing waves, the room height vs room width may be the main issue. If any part of your ceiling dips below the 8' level (or if your floor is elevated anywhere), that will exacerbate problems in the 60-90 Hz area. But a combination of bass traps and digital EQ helps enormously. I am using five Corner MondoTraps from RealTraps and couldn't believe the improvement once I got them put in. That, plus judicious use of the notch filter in my Anthem AVM20 for movie material. You may indeed be able to utilize built-in DIY fiberglass for the direct reflections, but bass traps commonly need some airspace to do their work (i.e., place them in room corners).
Be careful about speaker size and type. If I had it to do over, I would swap out my von Schweikert VR-4jr's for high-end, stand-mounted monitors (maybe like Usher BE-718s) and a (good) sub or two. The VS's are too big for my space--they too easily over-excite the room. Also, I presume you have a cement floor; this will be difficult to spike floorstanders to--will really trash the sound. I am spiking the VS's to hardwood platforms that rest on the carpet, but this is probably not a final solution.
I am not sure what to make of the suggestion to put the speakers along the long wall of the room. You may want to try both the long and short wall; my hunch is that short-wall placement will give you more "wiggle room" in terms of trying different speaker placements.
General rule of thumb is to put some acoustic absorptive material behind the speakers, and acoustic diffusors behind your listening chair(s). The Echo Busters and RealTraps Websites have good diagrams and advice on this.
Be careful about speaker size and type. If I had it to do over, I would swap out my von Schweikert VR-4jr's for high-end, stand-mounted monitors (maybe like Usher BE-718s) and a (good) sub or two. The VS's are too big for my space--they too easily over-excite the room. Also, I presume you have a cement floor; this will be difficult to spike floorstanders to--will really trash the sound. I am spiking the VS's to hardwood platforms that rest on the carpet, but this is probably not a final solution.
I am not sure what to make of the suggestion to put the speakers along the long wall of the room. You may want to try both the long and short wall; my hunch is that short-wall placement will give you more "wiggle room" in terms of trying different speaker placements.
General rule of thumb is to put some acoustic absorptive material behind the speakers, and acoustic diffusors behind your listening chair(s). The Echo Busters and RealTraps Websites have good diagrams and advice on this.