dB Technologies ES503 3-Amped Stereo System (Open Box)


dB Technologies ES503 3-Amped Stereo System

The ES503 3-Amped Stereo System from dB Technologies is a 1000W 3-amped sound system composed by 2 slave 4 x 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. It 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, + 20 dB). 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.

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


Technical Specifications:

Acoustic Specifications
Frequency Response -10 dB: 37 to 15000 Hz
Maximum SPL 121 dB
Driver Size Medium to High Frequency: 8 x 3.0" (7.6 cm) Neodymium drivers
Low Frequency: 1 x 12.0" (30.5 cm)
Directivity 95 x 65°
Technology Digipro G3
Class Class D
Power Amp 1000 W
Controls 1x OLED display plus rotative knob with push-button
1x Audio signal monitoring LED
1x Mini USB B port (service data)
Power Supply SMPS with PSU auto-range
Cooling Convection
Power Connections VDE socket
Controller DSP: 56-bit
Converter A/D Conversion : 24-bit/48 kHz
Presets Factory: Flat, playback, club, vocal, monitor, anti-feedback
User: Low shelving, semiparametric filter, high shelving
Limiter Dual active, RMS, peak, thermal
Crossover Frequency Low to High Frequency: 206 Hz
Channel Mic/Instrument: 1 x Combo (XLR-1/4") balanced/unbalanced input
Channel Line: 2 x Combo (XLR-1/4") balanced/unbalanced inputs
Media: 1 x Built-in hi-range stereo Bluetooth audio receiver
Output Mix: 1 x XLR balanced output
Housing Subwoofer: 0.6" (15.0 mm) black painted birch plywood
Tops: Polypropylene PP
Dimensions (W x H x D) Tops: 3.74 x 13.98 x 5.39 (9.50 x 35.51 x 13.69 cm) 
Subwoofer: 18.3 x 15.7 x 16.9" (46.5 x 39.9 x 42.9 cm)
Weight Each Top: 4.19 lb (1.90 kg)
Subwoofer: 36.16 lb (16.40 kg)
Packaging Info
Package Weight 56.5 lb
Box Dimensions (LxWxH) 24.5 x 23.0 x 20.5"




  • Ground shipping is free (orders over $40)
  • Free shipping only to the lower 48 states
  • Store Pick Up In Santa Fe Springs, Ca also available