Using two RELs also known as Stereo Sub- Bass, is advised for the fastest, clearest, deep bass- not for more output. Conventional wisdom has it that stereo subs results in between +3to +6 dB additional output depending upon positioning. In and itself, this is of only passing interest in most instances since even a single REL is capable of profound output. What then, is the point to adding a second REL?
In a word, clarity. Clarity that permits “seeing” back into the farthest reaches of the sound stage. Clarity that illuminates all dimensions of the musicians and the space that they inhabit equally and enhances the natural reality of a great full range system, as only RELs can.
We assume that users that choose to use mono blocks in their system are on the road to finding this clarity, and to RELs will help get their system to produce clarity, transparency, speed and detail NOT just in the bass but throughout the entire spectrum of music.