Slot Resonator Vox Booth

[hookiefree]

I have been playing around with the idea of building a small (4'x6' or so), rectangular, floated, MDF box (2x4 frame) in the middle of a spare bedroom adjacent to what will be my control room. I would build slot resonators on 2 or 3 of the walls maybe even the ceiling and floor if necessary. I'm not nearly as concerned about keeping sound out of the booth as I am with having it sound nice for vocals and accoustic guitar.

I'm wondering if anybody has tried anything like this before and what absorption frequencies I should aim for? Should each resonator be tuned differently?

[hookiefree]

Okay...well does anybody think all those resonators are overkill or would regular 703 panels be better for this application?