Driven by sheer size requirements, a multi-driver or line array type of design immediately came to mind. While I like the traditional line array design, I wanted to add a bit of a twist by incorporating subwoofers into the main cabinets. While this isn't absolutely necessary from a performance stand point, the extra cone area and excursion capabilities of the subwoofers can dramati cally lighten the demand placed onto the midbasses.

For the top end, the Bohlender Graebener RD series elements were a natural choice. They offer true line-source reproduction, can be crossed over much lower than an array of conventional planar or dome tweeters, and are perfect for line arrays. Due to the aesthetics of the design and length limitations, I chose to use the RD50.

When it came to my selection of midbass drivers, I wanted to stick with a 5" to 6" driver to keep the physical width of the cabinet somewhat narrow. I knew I would need six or eight drivers per speaker to match the length of the RD50, so also wanted to keep the cost somewhat reasonable. The Dayton RS150S were a perfect choice thanks to their modest cost per driver, very clean midbass and lower midrange performance, and attractive looks.

The choice of subwoofers was relatively easy at this point; the new Dayton Reference Series subwoofers would be a perfect visual match to the design and also offer excellent sonic performance. The RSS265HO-4 was chosen due to the small cabinet volume that would be available for the two drivers per cabinet.