dB Technologies es 503 Active PA System

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974.00 (including VAT @ 23%)

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Can be delivered to you on: 1st November 2016
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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

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Product Ref: 78428

  • Two 4 x 3'' Full-Range Tops and a 12'' Subwoofer
  • On-Board 3-Channel Digital Mixer with Bluetooth Connectivity
  • Powerful DSP, plus 6 Factory Presets and 3 User Presets
  • Three Modes for Flexible and Convenient Setup
  • Includes a Telescopic Pole and a SpeakON Cable

dB Technologies es 503 Active PA System


The dB Technologies es 503 is an active PA system that consists of two slave 4 x 3'' full-range tops and one master 12'' subwoofer. The es sub is equipped with a Digipro G3 amplifier module with a 3-channel digital mixer, Bluetooth connectivity and a powerful DSP processor. The full-range top speakers deliver outstanding clarity and vertical coverage while the subwoofer produces deep, thunderous bass responses. Complete with durable cabinets and a lightweight design, the dB Technologies es 503 PA System is perfect for a wide range of live performance environments.

Product Ref: 78428

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Full Description

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Versatile and Powerful

The es 503 PA system can be configured in three different modes by simply adjusting the settings via the OLED display and rotary control knob.

  • Mono Mode: The two satellite speakers are connected top-on-top - thanks to the quick and easy slide connection system - and are then mounted on the subwoofer via a 25mm pole.
  • Stereo Mode: Each satellite speaker is placed individually on a tripod stand (sold separately), further expanding the field of coverage. Alternatively, 2b Stereo Mode can be used to place one satellite speaker on a pole and the other speaker on a tripod stand.
  • Double Column Mode: An es 503 system in mono mode becomes the master for a second es 503 system (sold separately) via the integrated balanced output channel. By doing so, both systems are driven by the master's on-board mixer and any adjustments can be made exclusively via the masters OLED display.

Innovative Design

The internal design of the full-range speakers delivers an asymmetrical vertical coverage - thanks to the Logarithmic Curved Column Array technology - and a unique ''double ringed'' phase plug widens the horizontal coverage, while guaranteeing perfect voice intelligibility. Additionally, this design allows the dB Technologies es 503 to be adapted for any situation, including for either a seated or standing audience.

What's Included

  • 1 x ES Top A
  • 1 x ES Top B
  • 1 x ES503 Sub
  • 1 x Telescopic Pole
  • 1 x SpeakON Cable
  • 1 x Power Supply Cable


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


  • Speaker Type: 3-Amped Stereo System with Two Full-Range Tops and Subwoofer
  • Frequency Response: 37Hz - 15kHz
  • Maximum SPL: 121dB
  • Mid Frequency - High Frequency Drivers: 8 x 3'' Neodymium
  • Low Frequency Driver: 12''
  • Directivity: 95° x 65°
  • Amplifier: Class-D Digipro® G3
  • Amplifier Output: 500W RMS
    • 1000W Peak
  • Processor Controller: DSP 56-Bit
  • Converter AD/DA: 24-Bit/48kHz
  • System Presets: Factory Presets + User Defined
    • Factory Presets: Flat, Playback, Club, Vocal, Monitor, Anti-Feedback
    • User Presets: Low Shelving, Semi-Parametric Filter, High Shelving
  • Controls:
    • 1 x OLED Display + Rotary Knob with Push-Button
    • 1 x Audio Signal Monitoring LED
    • 1 x Mini USB B Port (Service Data)
  • Limiter: Dual Active, Peak, RMS, Thermal
  • Crossover Frequency LF - HF: 206Hz
  • Inputs:­­
    • Mic/Instrument: 1 x Combo (XLR/Jack) Balanced/Unbalanced Inputs
    • Line: 2 x Combo (XLR/Jack) Balanced/Unbalanced Inputs
    • Media: 1 x Built-In Bluetooth Receiver
  • Output: 1 x XLR Balanced Output
  • Subwoofer Cabinet: 15mm Black Painted Plywood
  • Full-Range Speaker Cabinets: Polypropylene PP
  • Handles: 2 x Lateral Side Handles (Subwoofer)
  • Subwoofer Dimensions: 465mm x 400mm x 430mm / 18.3'' x 15.7'' x 16.9'' (W x H x D)
  • Full-Range Speaker Dimensions: 95mm x 360mm x 137mm / 3.74'' x 13.98'' x 5.39'' (W x H x D)
  • Full-Range Speaker Weight: 1.9kg / 4.19lbs
  • Subwoofer Weight: 16.4kg / 36.16lbs