Great thread! I'm going to jump in with my set-up details and maybe garner some feedback too.
My room is designed to actually be a home gym, and to convert to a 6-seat home theatre within 15 minutes. I'm using these inflatable
recliners - very comfortable indeed! This allows me to move all equipment into a storage room (where it's normally kept anyway), and bring seating into the area, inflate it and off we go to 120" screen and 9.2/11.2 speaker goodness.
However, ever since I tried a buttkicker in my media room, I've been hooked on tactile transduction! I decided I needed something similar in the home theatre. The challenge is that I will need to bass-shake from one to six seats in single seat increments. i.e. if I only have three guests, I will only bring out three seats. etc. Here's the plan:
I'm building six, small, lightweight platforms, one for each seat, made of plywood and 2x3 for a frame. These will have rubber isolators on each corner, and will be sitting on a dense foam tiled floor too. I have a mixture of 4 Aura bass shakers (non-pro) and 4 K-Woon bass shakers, each approximately twice as powerful as the Aura ones. Onto two of the platforms, I will be hooking up a pair of Aura shakers for an 8 Ohm load on each. These will be a fair bit taller than the other four platforms, since they will act as a "back row". The four low-profile platforms will contain one 4 Ohm K-Woon shaker each. The K-Woons are lower profile than the Auras, so they're suited for this. Each of the platforms will have a banana-plug wall plate affixed to it, and I will be constructing a number of custom-made cables that will allow various seating permutations.
The K-Woons platforms will always be hooked up in series pairs to present an 8 Ohm load. Hence I could configure any number of seats from one to six, and always have between one and four 8 Ohm loads. The amplification will be done by a Yamaha RX-V663 7.1 receiver, which is capable of all-channel stereo, supposedly up to 90W RMS. The main AV receiver providing the signal is an Onkyo TX-NR5007 9.2 receiver.
The two sub outputs from the Onkyo will be split, each going to one sub and one channel of a stereo input on the Yamaha. My room's speakers go down to 50 Hz, and I'll probably crossover to the sub output at 60 Hz on the Onkyo. Thus, the Yamaha will never see anything higher than 60 Hz. I will use the Yamaha in "All channel stereo" mode, as both input channels will be receiving the same signal anyway. This will allow me to use up to 7 channels - for up to another 6 seats (in the future?) using 4 Ohm shakers. I've run 7 speaker cables from the media cabinet under the floor to a vertical support beam near the seating. This contains wall plates with banana plug connectors. The custom made cables will connect between this beam and the platforms. Thus, I should be able to quickly set up between one and six seats, with bass shaking thrown in.
I hope this makes sense without diagrams, which I could add later. I'd love to hear any feedback, good or bad, about what I plan to do. The first prototype single-seat platform will be made on Friday. I hope it'll work as well as I think it does in theory!
[EDIT] Since this post, many plas have changed and I went buttkicker crazy, buying multiple LFEs, BKA-1000A amps and another BK Advance wireless kit. New set-ups described in a post a few down from this one.