dBTechnologies ES 503 - Mobile PA System with Logarithmic Column Array Technology ES 503 is a revolutionary speaker system that combines extraordinary power with compact dimensions. Thanks to its innovative design and advanced electronics, it delivers professional sound even in the most demanding conditions. It’s ideal for artists, event organizers, and professionals seeking a universal solution without compromises.

Product Features 1000W peak power delivering 121 dB SPL, three configuration modes (Mono Mode, Double Column, dispersed application), Logarithmic Column Array providing asymmetric vertical coverage, and a dual-ring phase plug for excellent horizontal spread. Integrated 3‑channel mixer with Bluetooth and DSP manage all functions.

Multi‑Tasking Sound System for Professionals ES 503 represents a true revolution in mobile PA systems. dBTechnologies’ engineering delivers an outstanding power‑to‑size ratio: satellite speakers measuring 95x355x137 mm and weighing only 1.9 kg pair with a 12‑inch subwoofer weighing 16.4 kg, creating a system that is both highly portable and powerful. The Logarithmic Column Array (LCCA) technology precisely directs sound, eliminating interference at coverage boundaries. The dual‑ring phase plug extends horizontal coverage, crucial for speech clarity during conferences or presentations. The integrated Digipro G3® module with an automatic power supply ensures stable operation even under changing network conditions. The system supports three modes: in Mono Mode the satellite speakers connect and mount on the subwoofer via a quick‑slide system, while in Double Column Mode two ES 503 sets can be linked to form a professional stereo system. Additionally, built‑in Bluetooth allows wireless connection of mobile devices, and the OLED display guides you through configuration in a few steps. It’s perfect for live concerts and business events alike, thanks to full flexibility and ease of use.

Applications Live concerts and music events Corporate events and conferences Outdoor events and cafés with live music Detailed Technical Data Peak power: 1000 W Maximum sound pressure level: 121 dB SPL Subwoofer: 12" (dimensions: 465x400x430 mm, weight 16.4 kg) Satellite speakers: 4x3" (dimensions: 95x355x137 mm, weight 1.9 kg) Frequency range: 50 Hz – 20 kHz Interfaces: 3‑channel mixer, Bluetooth, Speakon outputs Materials and Construction The system enclosure is made from impact‑resistant birch plywood coated with a black, matte layer that ensures durability in road‑use conditions. The subwoofer features two side handles, greatly simplifying transport. The construction not only provides an aesthetic appearance but also protects sensitive electronic components. A special design in the satellite speakers ensures optimal sound dispersion, and the asymmetric vertical coverage adapts to various audience heights.

Package Contents 12" subwoofer with amplifier module Two 4x3" satellite speakers Cabling and documentation Summary ES 503 is an investment in reliability and uncompromising sound quality. With three configuration modes and advanced electronics, the system adapts to any scenario—from intimate studio sessions to large outdoor events. Regardless of the event type, you’ll deliver professional, clear sound with deep bass. Choosing ES 503 means investing in a solution that will never cease to surprise you with its versatility and ease of use. Deliver emotion without limits – your ideal PA system is already waiting for you.