The design concept is based on this simple acoustical fact: Sound does not enjoy hard, flat, parallel surfaces.  Almost every guitar speaker cabinet made, has hard, flat, parallel internal surfaces;  doesn't make much sense.  I also believe that the internal acoustics of a speaker cabinet are very integral in the cabinet's final sound.

I have owned an acoustical consulting company, specializing in recording studio design, for the past 15 years and have also played guitar for 46 years.  During that time, I have used just about every guitar cabinet made; some good, some not so good.  But I've always thought that they could be improved.  Unlike almost every other technology, guitar speaker cabinet design hasn't changed much in the last 40 years. 

I've always felt that front-ported closed-backed cabinets were too directional, but had a nice tight low-end.  Back-ported cabinets had better dispersion but the low-end and mids were messy and the sound coming out the ports wasn't very usable. 
 
While working on a new cabinet design, I quickly realized that the inside of the cabinet was the weakest link.  I began by the designing the inside of the cabinet as if it were a recording studio control room.  Just like any empty room, sound inside of a cabinet will continue to bounce back and forth between the parallel surfaces until it runs out of energy, thus creating standing waves.  Standing waves in a guitar cabinet can cause certain resonant frequencies to either be enhanced (nodes) or completely disappear (antinodes).  The approximate internal axial resonant frequencies for a typical front-ported 1x12 guitar cabinet are 352hz length, 705hz width and 470hz height.  These frequencies, and multiples of these frequencies, will be greatly exaggerated and mixed through the port(s) with the direct sound.  Using tuned ports,  or a tuned Helmholtz resonator, can help but the internal sound is still unnatural and uneven.

This new RND Cabinet design eliminates the internal acoustical mess happening in most guitar cabinets.  Try recording just the insides of a cabinet sometime.  It doesn't sound very musical!  The top and bottom are treated with specifically designed acoustical devices that diffuse sound uniformly over a broad range of frequencies.  A full height, V-shaped device is attached to the back, with the point of the V spaced precisely from the back of the speaker.  The back also acts as a quasi multi-dimensional basstrap/membrane absorber, controlling and smoothing out the low-end.  Coupled with the side-ports, and the results are a much wider, richer, natural and more musical soundfield.  RND Cabinets will fill up a stage without excessive volume, and give you more usable options in the studio.  

RND Cabinets are built for the most discriminating player who has spent years refining their tone and also knows that the magic is in the nuances, both gear-wise and musically.  These cabinets are built with the highest level of craftsmanship, the best materials and the strictest attention to the smallest details.  My guitar cabinets are very labor-intensive and take much longer to build then a standard cabinet, but I feel it's worth it.  

My goal is simple: Build the best sounding guitar speaker cabinet available.