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Old 14th June 2012, 03:13 PM   #11
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In a nutshell...Comparing 1 for 1 driver ...At the point where each is driven to an excursion that starts producing some distress noises, expect about 4 dB extra spl from the 5400 U.
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Old 15th June 2012, 08:53 AM   #12
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Location: Colorado Springs, CO
Quote:
Originally Posted by Josh Ricci View Post
In a nutshell...Comparing 1 for 1 driver ...At the point where each is driven to an excursion that starts producing some distress noises, expect about 4 dB extra spl from the 5400 U.

Perfect and thanks.
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Old 15th June 2012, 09:01 AM   #13
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Location: Colorado Springs, CO
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Originally Posted by m R g S r View Post
Spin you're nuts!! What's the size of that theater room? There's no need for 4x18's and 8000watts!!

I would still keep what you have driver wise, and do two large push pull horns per side. It will increase output without spending any $ on new amps and drivers, and it will lower distortion as well!
Then if youn don't want to toss your current boxes use them for a music system elsewhere in the house! (if the wife allows)

Nuts is why I went to 959rwhp on my corvette. Its not about what you need.

The theater/stereo/man cave is 21x21x9.5T. It has a single row of really comfy seating with a bigger perspective than most theaters. Epson 3D ect.

The reason for this particular proposed change is that the sub boxes are built already. I have no desire to build huge horns. The hard part is done. (other than moving the 320lb sub boxes to the garage for surgery to fit the 18's)

Gaing 4db in efficiency is one benefit. The other is that the 5400ultras in this box cuts the group delay in half and I can add power later when I upgrade houses in the near future. I will have 100amp service in the new construction's theater.

I know a lot of people talk a lot when posting about projects that never actually come to pass but I wasnt wasting anyone's time here asking these questions because this build is a fact.
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Old 15th June 2012, 12:52 PM   #14
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I hear ya.
The group delay shouldn't be a problem if you're using DSP to delay the rest of the speakers in the system. If not, then yes the bass might sound slow and muddy.
I just know myself and always like trying out new stuff, and once I got on here and started reading about horns all day, I just had to build some and see how they sounded! (no one in my area, besides clubs which use various FLH BLH etc, which I've heard plenty of times)
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