Data Sheet

ES 503 Tri-Amp Entertainment Stereo System 12
On-Board 3 Channels Mixer
The ES503 is equipped with a three-channel mixer controlled by a DSP. The first channel features a MIC/instrument
balanced/unbalanced combo connector with impedance compensation, notch-filter with selectable frequency
and adjustable gain with 3 positions (0, +10, + 20dB). The second and third channels are LINE inputs with
balanced/unbalanced combo connector. The EQ of the whole system can be switched from several optimized
factory presets or a custom user-defined one.
Customizable Balanced Output Channels
The balanced AUX/MIX output can be used as a direct link, or, alternatively, as an AUX output. In this case you
can actually feed a stage monitor or another speaker for which a custom separate mix is needed. In addition to
that, a dedicated notch filter is available in order to avoid any feedback.
When in double column mode, this output acts as a source of a second ES system providing left or right content.
Integrated Audio Bluetooth®
Module
The ES503 is equipped with built-in Bluetooth®
stereo receiver module, which allows to send
audio from any device (such as mobile phones,
tablets or audio players) with Bluetooth®
connection. We can consider them as 2
additional sources, reaching 5 total input
channels on the integrated digital mixer!
User-Friendly Interface
The ES503 is incredibly simple to set up and comes with an intuitive wizard that guides the user step-
by-step and automatically configures the system according to the application. The advanced graphical
interface allows to enter the heart of the system, to store and recall configuration presets, adjust
levels, EQ and create a post/post gain mix for different purposes. The OLED display, visible even in the
sunlight, is mounted behind an elegant smoked screen and provides all the necessary information to
the total system control. All editing operations are carried out through a single rotary encoder with
switch, making them extremely easy and error-free.
The integrated USB port allows the user upgrade the firmware of the ES503, ensuring that the system
is always updated to the latest version.
12” Bass-reflex Subwoofer
The bass-reflex subwoofer houses a generous 12” woofer and the amplifier
module. In addition to the input connectors and controls of the user-
interface, there are two Speakon outputs and a VDE Mains connector. The
enclosure, sturdy and stylish, is made of birch plywood coated with a durable
scratch-resistant black coat, which makes it truly road-ready. Two recessed
handles (one per side) help easy transport. Finally the metal grid with foam,
in addition to protecting the woofer and give a very elegant and professional
look, helps the reflex effect. The lower part of the grid, placed right on the
reflex ports, have in fact holes with a larger diameter to enhance air flow.