GXR-D18A

Powered subwoofer

High output subwoofer, self-powered class D, equipped with two 18″ (4″ voice coil) speakers. DSP controlled with 3000W, 135 dB SPL.

The GXR-D18A is part of the GXR line array system (ideal for install projects and live events where a compact line array is required). This subwoofer is the perfect solution where extreme low frequency support is required.

The GXR-D18A is a self-powered 3000 W (class D) enclosure and uses two 18″ (4″coil) Low Frequency drivers. The GXR-D18A subwoofers are specifically designed to be stacked and are very easy to use and control without the need for any external amps.

The GXR-D18A has a selection of rigging hardware & accessories available: Transport dolly, nylon protection cover, rain hood, etc.

Perfectly suited for:

Live PA
Houses of worship
Clubs
Fixed Installations
Touring
Theatres

High-Efficiency Power: Self-powered Class D system delivering 3000W with Power Factor Correction (PFC).
Advanced DSP: 96 KHz / 64-bit internal processing featuring linear phase FIR filters.
Acoustic Performance: 135 dB Max SPL with a frequency range of 30 Hz to 120 Hz.
Premium Components: Dual 18″ woofers (4″ voice coil) for extreme low-frequency support.
Intuitive Control: 2.8″ IPS screen for real-time monitoring and preset management.

Components

LF: 2 x 18”, 4” coil with loop output

Frequency Range

30 Hz – 120 Hz (-10dB)

Frequency Response

35 Hz – 100 Hz (± 3dB)

Max SPL

135 dB / 141 dB peak

Coverage

Omnidirectional

Power

3000W Class D with switching power supply & PFC

LF Amplifier

1 x 3000 W

Processing

96 KHz / 64 bit double-precision, DSP with FIR filter linear phase

Control

User control interface with 2.8″ IPS screen

Control Connections

Ethernet (OCS) / USB (DSP updating)

Input

Analog / AES3 optional

AC Power

90 – 264V. 50/60 Hz with PFC

AC Connections

16A Neutrik powerCon TRUE1 with looping output

Finish

Polyurea coating, black colour

Material

18 mm premium birch plywood

Dimensions

605 x 1100 x 750 mm (H x W x D)

More features

Hardware for GXR-D18A

Enclosure

The GXR-D18A cabinet is constructed from 13-ply premium birch plywood (18mm thickness) and finished with polyurea coating.

Internal design

The internal structure of the GXR-D18A is heavily braced for greater longevity and all parts are assembled on metal inserts with metric screws. The amplification modules & DSP are housed in a separate chamber to the drivers avoiding excessive heat & vibration, thus delivering greater efficiency and reliability.

Rear panel

The powder coated steel rear panel contains all connections and houses the GXR-D18A amplification modules and DSP, is easily accessible and housed separately from the drivers for increased reliability and efficiency.

Grill

The cabinet has a heavy duty, powder coated front grille with a special acoustic rear fabric to protect the transducers against dust and dirt.

Handles

Four handles are located on each side of the enclosure to facilitate transport, positioning and loading of the cabinets.

Rigging

Built-in flying points are located on each side of the enclosure to link the cabinets together or fix it to the flying frame.

Transport

The cabinet is easy to transport thanks to its dedicated dolly and a protective nylon cover is also available to protect the enclosure and keep it clean on tour.

Accesories for GXR-D18A

CA-GXRD18

Transport dolly for GXR-D18A

FD-GXRD18NL

Rain cover for the back panel of the GXR-D18A

FD-GXRD18/2 FD-GXRD18/3

Nylon protection cover for 2 or 3 GXR-D18A subwoofers

GR-18WKIT

Four castors and bases for transportation of the GRX subs

DSP configuration

DSP panel configuration

On the back pannel of the cabinet you will find the digital control area. From the compact joystick located below the screen you are able to configure the basic adjustment functions of the internal DSP.

Just move the joystick to select the icons on the left of the screen. You can enter into the following functions: Home, settings, folder, configuration and information. Please note that you must apply the desired configuration in each one cabinet and requires electrical power to work.

If changes are not made the display will automatically dim to avoid unnecessary light in situations where light is not wanted. To re-activate the light simply press the joystick.

The following screens are an example and may vary slightly for each cabinet.

HOME

On the main screen you can see the cabinet’s input and output:

• Input: You can see a vumeter with the input level and a clip signal.

• Output: You have a vumeter with the output level (0 dBu is the amp’s maximum level) You can check the compressor and control the dynamic activity.

SETTINGS

This panel allows you to change the gain, polarity, mute and the delay for the inputs.

You also have the possibility of putting a high pass, changing the type of filter, frequency and order.

FOLDER

The folder screen shows you the name of the preset and its description.

Using the joystick you can change the preset.

CONFIGURATION

This screen is to configurate Ethernet. You can choose automatic or manual.

You can also configure the screen saver.

And here you have the input selection. You can choose between analog or AES3 for channel 1 or channel 2.

INFORMATION

The last screen shows you some general information regarding the cabinet’s components.

Here you can see the cabinet model, its serial number, DSP firmware and hardware versions, amp module model with hardware version, as well as the accelerometer status.

Watch this TUTORIAL to understand how it works:

Backpanel detail

Amplification & DSP

Bi-amplified Class D with switching power supply and PFC (Power Factor Correction). With PFC the power supply regulates itself when AC mains change, so the amp power output will not change with mains swinging. The amplification far exceeds the transducers needs thus resulting in high output, high damping factor and extremely low levels of distortion.

This system is also very environmentally friendly with a reduction of approximately 40% of current draw.