Originally Posted by FLViking2011
Iâ€™️m ready to start the boss build this coming weekend. Iâ€™️ll be putting three jbls on a 10ft platform on the long side of my L shape couch and then two jbls on a smaller platform on the shorter side side. Iâ€™️m thinking this will be great because itâ€™️s very difficult to pressurize my room. Attached are some pictures of my setup, room and couch. What would be the best way to wire the 5 jbls? Iâ€™️m going to be using the bridge mode on a behringer nx3000d.
FLViking.....great setup! Yes, the BOSS will deliver the smiles in that large room and large sectional on concrete.
The entire room will feel like it's moving!
For your design, yes, wiring all 5 drivers in series will provide a load of 20 ohms. At 20 ohms impedance, the 4000 will provide about 424 watts RMS in bridged mode. That's perfect for a BOSS setup providing about 85 watts for each driver. The amplifier will run at low current and very cool with this configuration.
If you'd like to split up the drivers into a 2 plus 3 combination and run the 4000 in stereo, that will work also. It's really a matter of preference and how many wires you want running to your BOSS. 2 plus 3 will require 2 speaker cable runs, while all 5 in series will require only 1 run of speaker cable.
For your platform design, if that corner piece is a piece all by itself, I'd combine it with the shorter leg of the L. Maybe that's what you were already planning. If it's connected to either the longer leg or the shorter leg, just make sure the BOSS platform is under that entire piece including the corner piece. Said another way, don't try to place that corner piece on a platform with the shorter leg if it's connected to the longer leg.
It would be helpful if I knew the location of the legs of your furniture pieces and where each sectional piece is separated from the others. That will help finalize your platform design and number/location of the isolators to optimize your BOSS experience. I think you said already your BOSS drivers will be close to the center of your seating position which will be great since your platform will be very rigid and heavy with 3 layers.
It would also be helpful if I knew the use case for your corner furniture piece. If it's not used very often, then it would be best to place the drivers adjacent to that corner piece instead of below that corner piece. Said another way, if during over-flow situations, people sit in the shorter section instead of the corner section, then I'd place those 2 drivers under that shorter leg of the L instead of placing one in that corner. This is done to maximize the TR by getting the body masses over the drivers as much as possible.
One other idea...if you can add one more driver to your design, that would place 3 under the long leg, 1 under the corner piece and 2 under the shorter L. With a sixth driver, you could wire them in series/parallel for 6 ohms into bridged mode so you would still only need one speaker wire run without any need for a larger amplifier. Maybe you don't have the room for 6 drivers but wanted to mention that.
Looking forward to learning more about your design.
Hope this helps.