The Grelle Forelle's sound concept was originally formed on holiday, somewhere in a hammock in Croatia—and to this day, it holds its own in the international club scene. Its sound system consists of two vertical bass lines, each with four Lambda Labs DW-15 subs, and one Alcons Audio QR36 line array with Alcons Pro-Ribbon technology. In technical terms, this unique setup creates half-space conditions. In less technical terms, it helps reduce all sorts of unwanted reflections, be it from floors, ceilings, or rear walls. This is one of the big reasons of what makes this system so special.

This behemoth of a system is rounded off by a 4-point setup with two additional QR36 line arrays framing the dance floor. And since a simple 4-pointer would be too easy, we arranged the rear speakers in a way that you “enter” the sound when leaving the bar, only to be completely surrounded by it after just a few meters.

From the bar onwards, two Alcons Audio VR12 systems complement the frontal system, providing sound to the rear of the 30-meter main floor. The clean bass impulse, set up by our vertical basslines, extends throughout the entire club, providing a solid foundation in the lounge area behind the bar, while still being precise and without resonance. To make this possible, we added multi-layered, 60cm-deep bass traps consisting of porous absorbers, air volumes, and custom-built membrane absorber elements in the entirety of the rear walls. This was necessary in order to avoid any reflections the highly directional bass reproduction might otherwise produce, and ease it into a “natural” flow.

After the Forelle decided to increase the number of live concerts hosted, the existing sound system was updated with three Alcons Audio RR12 tops on each side, hung to the left and right of the live stage. For an ultimate sound experience, we fine-tuned the bass system's characteristics and tuning, and transferred more frequencies into the top speakers. This means that all musicians play directly in front of the bass array—a unique experience of sound for both artist and audience.