dB Technologies ES503 Column PA Stereo System
Product #50565
Usually ships in 2 - 3 weeks

dB Technologies ES503 Column PA Stereo System

Product #50565 | SKU ES503
Usually ships in 2 - 3 weeks

With 2 slave 4 x 3" full-range tops and 1 master 12" subwoofer
Our Price $2,399.00

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The ES503 from dB Technologies is a 1000W 3-amped sound system composed by 2 slave 4x 3” full-range tops and 1 master 12” subwoofer. The sub hosts a Digipro G3® amp module with auto-range PSU and a 3-channels mixer with Bluetooth connection. The internal design of the tops allows an asymmetrical vertical coverage (thanks to the Logarithmic Curved Column Array technology) and a unique “double ringed” phase plug widens the horizontal coverage and guarantees a perfect voice intelligibility.

The 3 elements composing the system (2 tops and 1 sub) can be configured in 3 different modes:


The enclosure of the two satellites embeds a slide connection system, which assures perfect top-to-top matching without the risk of incorrect assembly and includes the electrical connection between the two tops. The “A” satellite receives the powered signal from the subwoofer through a 4-poles male Speakon™ connector (included in the box) and relaunch the audio to the “B” top.

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 an adjustable anti-feedback filter, impedance compensation and microphone gain with 3 positions (0, +10, + 20dB). The second and third channels are LINE inputs with balanced/ unbalanced combo connector. The system is provided with several preset equalizations, and each user can create and save its own custom equalization.

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.

The system is equipped with a built-in extended range Bluetooth® stereo module, which receives audio from devices such as mobile phones, tablets or any other audio device with a Bluetooth® connection.

ES503 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, recall configuration presets, adjust levels, EQ and create a pre/post gain mix for different purposes. A rotary encoder with button allows to control any operation easily and quickly.

The bass-reflex subwoofer houses a 12” woofer and the amplifier module. In addition to the input connectors and controls of the userinterface, there are two Speakon outputs and a VDE power connector. The enclosure, is made of birch plywood coated with a durable scratchresistant black coat.


  • 3-amped stereo system
  • OLED DSP Interface
  • Stereo or Mono configuration
  • On board 3-channel digital mixer
  • Built-in extented range Bluetooth® stereo
  • audio receiver
  • Customizable balanced output channel
  • Logarithmic column array for extended
  • vertical coverage
  • Double-ringed phase plugs
  • Auto range PSU


  • Portable PA for live sound and playback
  • applications, clubs, ballrooms, corporate AV
  • Compact live sound reinforcement system


Technical Data
Speaker Type 3-amped Stereo System with two full-range tops and one subwoofer
Acoustical data
Frequency Response [-10dB] 37 - 15.000 Hz
Max SPL 121 dB
MF - HF 8x 3"
Type MF - HF Neodymium
LF 12"
Directivity 95x65°
Amp Technology Digipro® G3
Amp Class Class-D
Power Amp Peak 1000 W
Controller DSP 24 Bit/48 kHz
System Presets Factory presets + User defined
Limiter Dual Active, Peak, RMS, Thermal
Crossover Frequency LF-HF 206 Hz
Mic/Instrument Channel 1 x Combo (XLR/Jack) balanced/unbalanced input
Line Channels 2 x Combo (XLR/Jack) balanced/unbalanced inputs
Media Channel 1 x Bluetooth® built-in receiver
Mix Output 1 x XLR balanced output
Housing (Subwoofer) 15mm Black Painted Plywood
Housing (Tops) Polypropylene PP
Handles 2x lateral side (Subwoofer)
Width (Top) 95 mm (3.74 in)
Height (Top) 360 mm (13.98 in)
Depth (Top) 137 mm (5.39 in)
Width (Subwoofer) 465 mm (18.3 in)
Height (Subwoofer) 400 mm (15.7 in)
Depth (Subwoofer) 430 mm (16.9 in)
Weight (Top) 1.9Kg – 4.19lbs.
Weight (Subwoofer) 16.4Kg – 36.16lbs.


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dB Technologies ES503 Column PA Stereo System
dB Technologies
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