Kustom Coupe™ extension speaker cabinets are crafted from a single sheet of the finest Baltic Birch to ensure big, rich tonal qualities. This method enhances the cabinet’s overall resonance because each sheet of Birch has its own unique structural and density patterns. Accordingly, the pieces resonate together, creating stronger fundamental tones and harmonics. Naturally, Coupe extensions are loaded with KEI™ (Kustom-Eminence Integrated) Turbo 12 speakers to provide a unique mix of sparkling highs, rich, throaty mids, and warm yet defined lows. Whether you want to convert your combo into a wall of sound or simply need to spread your sound around the stage, a Coupe extension cabinet will do the job with style.