Rerurn to Romy the Cat's Site
In the Forum: Audio Discussions
In the Thread: Romy The Cat's new Listening Room
Post Subject: Life On The Ground FloorPosted by Paul S on: 5/9/2010
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Yes, the raised-floor-with-vaulted-ceiling rooms are very hard to charge properly. Perhaps you might at this point begin to work on some of the floor sink treatments discussed up this thread?
The corner "nook" can be framed in, if need be, with a door to access the equipment that has to be in there, or you might put LPs and/or CDs, etc. in there. With a normal wall and door(s), this little room will go from being primarily a resonator to being primarily a sink, like your floors.
No surprise, really, it sounds like you will in any case need more LF POWER than your present line arrays can do. The good news is, I can assure you that there are commercial solutions you can adapt to charge that room with LF, once you tighten up/ground the floor sink. Of course, you don't need to use this equipment like the "pros" do; but why not benefit from some of the things the pro stuff can easily do?
The most annoying thing I've found with rooms like yours, that you have not discussed yet, is that +/- room modes can change with SPL and or musical "content", meaning the tonal characteristics of the music affect room characteristics; ie, it seems like some modes lie "dormant" until they are somehow excited by ??? to eat or augment a particular band in a particular situation. Some of these modes appear to be secondary (summing) modes, as well. This about drove me nuts in my Pacific Ranch house.
I never did solve my problems at that house (which was on a concrete slab, by the way), and I continued to work it from two entirely different (and mutually exclusive) approaches until I moved out, namely: 1) Keep adding acoustic power until the room is charged enough to effectively "cancel" the undesirable modes. 2) Use the speakers like giant headphones to accomplish +/- the same thing.
Although I never solved the whole problem entirely, both of these approaches showed real promise.
Best regards,
Paul SRerurn to Romy the Cat's Site