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Thanks for the complement but guys like Deon Bearden, Scott Atwell, Dan Wiggins, Dr. David Hyre, Thilo Stompler, John J., Mark Seaton, Tom Danley and others are the real geniuses. I read what they post and try it out with my own subs. Like I said in my PM, adding a second Titanic would not...

You are welcome. And thanks for coming back and posting your impressions of the change. Most just take our advice and disappear forever. -Robert

In a larger enclosure with a larger port(s), you would best the output of an SVS PB13 Ultra and get close to an AV123 MFW or one of the smaller offerings from Epik Subwoofers. The Titanic is a VERY capable driver when put in the correct enclosure. Do you have any woodworking experience? You...

No. The soft clip feature keeps the amp from sending a clipped signal. The amp's built in subsonic filter at 20hz keeps the sub from bottoming. See where the thin, black line crosses the red line around 17hz? Without the SSF, that's where your driver would reach xmax when you are at full power...

Correct. 1st graph is current and 2nd is in an optimal box. If you add a 3" x 18" port to your current setup, then you would get the following. Not bad when you just look at this graph. But the port air speed is the problem. As you can see, it is well over the recommended limits. But if...

Current response: You can make your current port longer, but you will just take up valuable interior air space. If you don't mind having a sub with a pipe sticking out, then make it at least 18" long. Here's my 120L design. Notice the hump in the first one and how fast it drops off...

That's right. It has the potential to best an SVS in the correct ported enclosure. The proper ported box would be about 4.5cf tuned to 20hz. I like 120L tuned to 16hz. Now you will lose some top end. So at 40hz, you will only be at 116db (still extremely loud). But at 20hz, you are almost 15db...