4 18" 5400's powered by 2 qsc rmx 5050's

I currently have 4 18'" 5400's and am going to order the rmx 5050's asap. Any opinions on the 5050's would be appreciated.

If anyone is interested, I will post The theater photos and updates as I go.


Thanks, Robert

I have 100 amps available to the theater equipment itself. The whole house was rewired in 2000 when we built the theater and the rest of the addition. The cable that runs the theater is the stuff that someone on this board was talking about on the (closed) thread. That stuff was expensive even though I got it at cost from the dealer. I have a total of five 20 amp circuits for the audio/video system only. Also, the lighting and the fans and other electrical outlets in the theater are on their own circuits. I am currently running 3 rmx 850's, and 2 rmx 2450's. All have been installed for five years now, but are 6 years old. No problems so far. I add the 5050's and they are going to draw 40 amps, but I will be removing some of the bass signals from the 2450's, so hopefully I will reduce the amperage from those amps.

I'm looking at

rmx 850 roughly 7 amps each total 21 amps

rmx 2450 roughly 10 amps each total 20 amps

rmx5050 roughly 20 amps each (max) total 40 amps

roughly 20 amps left over from the dedicated circuits and I still have access to the other outlet circuits from the wals in the room. About 40 amps total.

We really only use the theater when other things aren't being used. I hope I will have enough power. My father is definitely a whiz with electricity and he says I should not have a problem. He and I wired the entire thing. Hope this helps. Thanks
Robert

I currently have six jbl 2241h's running the bass duties and they are crossed at 50hz. I plan on having the 5400's running 30 down as low level effects channel and using the jbl's for the front and rear bass on the main channels. I may even add a sub to the center channel, but that is down the road and will require more crossovers and more amplifiers. I will be the jbl's at for the 50-30hz range. Since this is a hobby, I guess we all keep looking to add to what we have.

What do you think about the bass setup?

Thanks,

Robert

PS I also have bass shakers mounted to the bottom of the riser for the seating area.

By the way what do you think of the rmx 5050?

$1280 each with 0 % and not due for 15 months. $2560.00 total and don't have to pay till next year.

Yes, I was thinking of many possibilities, I'm trying to get the best fit for my room and also the ability to move them if I needed to. I was looking at putting the enclosures almost directly against the walls. so I am almost eliminating the rear because of such close proximity of the woofer to the wall- I think.

It is such a big decision. Every time I think I am ready to go, I end up asking myself more questions.

So far, what I do have for this upgrade is 4 5400's and the hurricane t-nuts. Everything else for this upgrade is in a state of flux. Nothing is definite, so I am entertaining all thoughts on the matter, but I hope to nail some designs down soon.

As far as size goes, the boxes will be about 15-16 ft each- that much I know.
The layout is adjustable, but I just can't seem to get away from being so close to the walls. As far as bucking goes, I was thinking of actually strapping the sub to the walls with some kind of anchor system thereby hopefully eliminating any movement. What do you think? Maybe some kind of steel or aluminum struts that bolt into the boxes and into the walls. I failed to mention this when I described it to you in the PM.

the opposing drivers was definitely on my list. Ifc they oppose, then the box will have to stretch wider or deeper to accomodate the magnets and the baskets. I have a bunch of things to look over.

I agree. The 6 jbl's cause things to jump and vibrate many rooms away. I really am not up to date with these "super woofers". I have two definitive technologies pf1800's in my pro logic setup and they are sealed cabs with an 18 and 500 watt amplifier. These are the closest thing to the new stuff that I have- so I really don't know what to expect.

I had that in mind, but I was trying to get away from having two 2.25" baffles on each box. But I definitely like that idea and am going to put the measurements in the mix now. Thanks,

Robert

The mounting depth is 13.25" so I guess if the enclosures are 30 inches wide and the last layer of the triple thick 3/4" baffle allows for driver recess, then I should have about 2-3 inches between the drivers. With this setup, if the vents in the magnets are that close, what do you think will occur -good or bad situation?

I am definitely going PR. I just wish I could get them from tc.

i am looking at all of the stuff you posted. i am plotting the output in winisd.60a1 and with four drivers with 2500 watts to the system the cone excursion approaches 38 mm at 10 hz with no filtering. I get roughly 125 db at 20hz and down to 14hz- 124.5db, 10hz-113db. Plenty enough volume and way more extension than I currently have. Now I am going to look at the amp question .