I've learned my monitors (KRK RP6s) well enough that I can set bass levels reasonably well without actually hearing all the bass frequencies in the mix. But I can't hear the quality of those frequencies, if you know what I mean - I can't hear how defined or undefined the bass is and that sort of thing. So first question: is a sub going to help? If the answer is yes, then the question is where to put it? Space is limited. The room is 10x18, with the desk centered on the short wall and the listening position about 6 feet straight out from the center of the short wall. The room is treated reasonably well, bass traps in all the corners and some HF absorption in appropriate spots on the walls and ceiling (which is low, 7 foot). Overall, the room is fairly flat in and around the listening position so I'm happy on that front, and there are a bunch of 6" thick gabos stuffed with rockwool that double as broadband absorbers here and there as well. The monitors are on the desk (it's quite tall), equilateral triangle with the listening position, proper height, sitting on absorption pads, and the desk itself isn't very deep, maybe 18 inches, with a pull out keyboard and mouse tray that sticks out another 12 inches when in use. Here's the thing, the "desk" is a custom built unit (solid wood) with built in shelves underneath, and I could put the sub inside it, under the keyboard/mouse pullout shelf, but I'm afraid that there would be weird resonances going on from being inside the desk cabinet, plus the pull out shelf could interfere with the work it does. Bass tends to go through things though - but a 3/4 inch solid pine shelf might be a little too much to ask? Bass frequencies aren't very directional, so I imagine it's ok to put it to the left or right of the desk? If so, it's probably going to have to sit on an isolation pad on the floor, about 1.5 feet from the back, short wall and maybe 3 feet from the side wall. Centered on the floor is no good, that's where me feets go when I'm at the desk. Is there a proper position or ideal position? If you were my sub, where would you sit? After all those words, maybe a picture would have been a better idea, but I don't have a digital camera, so this is as good as it gets Thanks!