Originally Posted by mpedris
In terms of articulation and precision, how does the 113 compare with DD-18?
That's an open ended question that has evoked at least half a dozen long threads. One of the earliest and best comparisons was the one that RMK and Ransac did, in December 2006 as I recall, which was followed by many similar discussions throughout early 2007. I would suggest reading several of those threads. The comparison usually involved a long discussion about music vs. HT, output, linearity, distortion, ARO, built in SMS, servo control, size, WAF etc.
Anyway, after listening to both for over a year, I'd still say they compare so closely to one another in terms of articulation and precision at normal listening levels that I have no clear favourite. Looking at graphs many would tempted to give the edge to the FL113 for HT applications because of its significantly greater output in the infrasonic. However that output comes with far higher distortion below 25hz compared to the servo controlled DD-18. Similarly its been suggested that the incredibly low THD of the DD-18 gives it an edge in precision, however the difference in THD which is mainly second order is not audible. Once the rooms transfer function is factored in, and equalized for using the ARO or built in SMS, it again becomes a toss-up except in intense movie scenes. But then again those scenes are not about articulation or precision.
Bottom line for me is they are both excellent highly articulate subs and too close to call. Because the compliment each other well either one would be a terrific addition to anyone owning the other.