The AC18/26 is a compact fullrange loudspeaker system designed to provide maximum bandwidth and SPL in a single system package and yet be visually unobtrusive. The enclosure design allows for installation very close to walls and ceilings making it an ideal choice for under balcony, column, or wall mounting. The high frequency device is a 1exit compression driver integrated into a newly designed 120 x 60 rotatable PT, (Progressive Transition) waveguide providing even coverage throughout the intended listening area. The combination exhibits smooth power response resulting in extremely natural voicing. The AC18/26 utilizes an 8Symmetrical Field Geometry (SFG,) LF Transducer with a copper-clad aluminium edge wound 2.5voice coil and a copper-clad pole piece that improves performance by reducing voice coil inductance and distortion.

The rugged multi-ply hardwood enclosure is designed to work in the vertical plane as well as in the horizontal plane. Mounting points are provided for an optional U-bracket and for an OmniMount type bracket. The AC18/26 is also equipped with attachment points located on the bottom of the enclosure for a stand mount accessory.

The rugged plywood enclosure features JBLs textured DuraFlex, finish and is equipped with a heavy duty powder coated steel, foam-backed grille.