I got a question regarding Rat Sound Systems' subwoofer setup designed by Dave Rat for Bassnectar NYE 2016, so I thought I break it down.
DISCLAIMER: This analysis, in the interest of education, is based on a single photo and the physical dimensions of a single L-ACOUSTICS SB28 subwoofer. Dave Rat has disclosed it was gradient, but I've modeled both end-fire and gradient approaches. I did not design, install or operate this system and am not affiliated with either Rat Sound Systems or Bassnectar.
All physical dimensions point towards the use of SB28_60 (60 Hz bandwidth) presets.
Maximum cancellation in the center occurs around 40 Hz for End-Fire and "full-range" for gradient.
Normally I wouldn't recommend a 5 : 3 ratio because it noticeably compromises rear cancellation. However, IN THIS INSTANCE at CLOSE DISTANCE (4,75 m / 15.7 ft) the ratio accounts for the level difference introduced by the physical displacement between the rings (inverse square law).
Link to Soundvision files are below.
Enjoy!
www.ratsound.comDave Rat's
first blog regarding this topic.
Dave Rat's
second blog regarding this topic.
www.merlijnvanveen.nlEnd-Fire Soundvision
fileGradient Soundvision
file
Photo: Dave Rat
