dB Technologies ES503 Stereo Column PA System

The dB Technologies ES503 is a compact three-channel amplified column PA system designed for musicians, mobile DJs, presenters, venues and event professionals.

It combines an active 12-inch subwoofer with two lightweight full-range array tops. A 1000W peak Digipro G3 Class D amplifier, 121dB maximum sound pressure level and 37Hz to 15kHz frequency range provide clear, balanced sound from a highly portable system.

The two satellite speakers can be used together as a single mono column, positioned separately for stereo sound or combined with a second ES503 to create a double-column system. An integrated three-channel digital mixer, Bluetooth audio streaming and 24-bit DSP reduce the amount of additional equipment required for smaller performances and events.

1000W Peak Class D Amplification

The active subwoofer houses the Digipro G3 amplifier module and provides three amplified channels for the subwoofer and two satellite outputs.

Its efficient Class D design delivers 1000W peak output while helping to keep the system compact and manageable. Peak, RMS and thermal limiters protect the internal components during demanding performances.

The system produces a maximum sound pressure level of 121dB, making it suitable for live music, wedding entertainment, mobile DJ sets, presentations and small to medium-sized venues.

Active 12-Inch Bass-Reflex Subwoofer

A 12-inch low-frequency driver provides controlled bass reinforcement for instruments, vocals and recorded music. The bass-reflex enclosure is constructed from 15mm birch plywood and finished with a durable scratch-resistant black coating.

Two recessed side handles make the 16.4kg subwoofer easier to lift and transport. The amplifier, mixer controls and speaker outputs are all housed within the subwoofer, creating a tidy central connection point for the complete system.

Twin Full-Range Array Tops

Each satellite contains four 3-inch neodymium full-range drivers, providing eight drivers across the complete system. The compact polypropylene enclosures weigh only 1.9kg each.

Logarithmic Curved Column Array technology creates asymmetrical vertical coverage to serve both seated and standing audiences. Double-ringed phase plugs widen the horizontal dispersion and help maintain clear speech and vocal reproduction.

When used as a mono column, the two tops slide together using an integrated mechanical and electrical connection. This avoids the need for a separate cable between the stacked satellite sections.

Mono, Stereo and Double-Column Modes

The ES503 supports several configurations for different applications.

In mono mode, the two satellite speakers connect together and mount above the subwoofer using the supplied 25mm pole. The combined array provides extended vertical coverage from a compact footprint.

For stereo operation, the two tops can be positioned separately on suitable 25mm speaker stands. This provides wider placement and genuine stereo reproduction for music sources.

Double-column mode uses two ES503 systems. One system acts as the master and sends audio to the second through the balanced output, allowing both systems to be managed from the master mixer and display.

Three-Channel Mixer with Bluetooth

The built-in digital mixer allows several audio sources to be connected without always requiring a separate mixing desk.

The first channel provides a balanced and unbalanced XLR and 6.35mm combination input for a microphone or instrument. Two additional combination inputs accept balanced or unbalanced line-level sources such as keyboards, media players and external mixers.

A built-in Bluetooth receiver accepts stereo audio from compatible phones, tablets and other devices. The balanced XLR AUX/MIX output can send a separate mix or combined signal to another powered speaker, stage monitor or second ES503 system.

24-Bit DSP and OLED Display

The integrated 24-bit/48kHz DSP manages the system configuration, mixer, equalisation, crossover and protection settings.

An OLED display and control encoder provide access to factory presets and user-defined settings. A guided setup process helps configure the ES503 for mono, stereo or double-column operation.

The mixer also provides level and equalisation control, allowing the system to be adapted for speech, live performance or recorded music without an external processor.

Compact and Portable Design

The ES503 separates into an active subwoofer, two lightweight satellite tops and a sectional mounting pole. This modular construction makes the system easier to transport and store than many conventional speaker and stand setups.

The standard system includes the active subwoofer, two satellite speakers, a sectional 25mm pole, a speaker cable for mono column operation and a power cable. Protective bags, transport accessories, additional speaker cables and stereo stands are available separately.

Key Features

• Compact three-channel amplified column PA system
• Suitable for musicians, DJs, presentations and events
• Mono, stereo and double-column configurations
• 1000W peak Digipro G3 Class D amplification
• Maximum sound pressure level: 121dB
• Frequency response: 37Hz to 15kHz
• Active 12-inch bass-reflex subwoofer
• Two passive full-range array tops
• Four 3-inch neodymium drivers in each top
• Eight 3-inch full-range drivers in total
• Logarithmic Curved Column Array technology
• Double-ringed phase plugs
• Asymmetrical vertical coverage
• Published directivity: 95° x 65°
• Integrated three-channel digital mixer
• Microphone and instrument combination input
• Two balanced and unbalanced line inputs
• Built-in stereo Bluetooth receiver
• Balanced XLR AUX/MIX output
• 24-bit/48kHz digital signal processing
• Factory presets and user-defined settings
• OLED display with guided system setup
• Peak, RMS and thermal limiters
• 15mm painted plywood subwoofer enclosure
• Lightweight polypropylene satellite enclosures
• Integrated top-to-top mechanical and electrical connection
• Sectional 25mm mounting pole included
• Speaker cable for mono column operation included
• Power cable included
• Dimensions of each top: 95 x 360 x 137mm
• Subwoofer dimensions: 465 x 400 x 430mm
• Weight of each top: 1.9kg
• Subwoofer weight: 16.4kg

Frequently Asked Questions

Q: Is the dB Technologies ES503 an active PA system?

A: Yes. The amplifier is built into the subwoofer and powers the subwoofer and both passive array tops. No separate power amplifier is required.

Q: Can the ES503 operate in stereo?

A: Yes. The two array tops can be positioned separately to provide stereo sound. Suitable 25mm speaker stands and the appropriate stereo speaker cable kit are required.

Q: Can I use the ES503 without an external mixer?

A: Yes. The built-in mixer provides one microphone or instrument input, two line inputs and Bluetooth audio streaming. An external mixer is only needed for additional sources or more advanced control.

Q: Does the ES503 have Bluetooth?

A: Yes. Its integrated Bluetooth receiver accepts stereo audio from compatible phones, tablets and media devices.

Q: Can two ES503 systems be connected together?

A: Yes. Double-column mode allows one ES503 to act as the master and send audio to a second system through the balanced output.

Q: What is included with the ES503?

A: The standard system includes one active subwoofer, two satellite tops, a sectional 25mm pole, one speaker cable and a power cable.

Q: Are protective covers included?

A: No. Protective bags, covers, transport accessories and stereo stands are available separately.