Definitive Audio Vortex 450 L1 MK2

A Modern Column Format, Balancing Mobility and Sound Coverage

The column system has established itself as a practical solution for quickly amplifying a voice, an acoustic duo, a light DJ set, or a small stage, while maintaining a compact footprint. This type of configuration combines a dedicated bass subwoofer and column elements to project the mid-high frequencies higher, improving range and perceived clarity. With its ABS satellites and MDF subwoofer, this system fits this logic: easy to install, simple to transport, and suited for versatile setups.

Who Is It For and What Are Its Uses?

This system is aimed at musicians, hosts, DJs, and presenters looking for an all-in-one sound solution: playback, amplification, and basic mixing in a single unit. The 2 Micro/Line inputs allow, for example, managing a vocal microphone and an instrument/line source, while the stereo AUX input accommodates background music or a second source. Thanks to Bluetooth and the MP3 input via 3.5mm Jack, it is also suitable for events where quick setup is essential: speeches, group classes, presentations, or small performances.

Features and Key Points for Stage and Event Use

Integrated Mixing and Effects: The Essentials, Immediately Accessible

The onboard mixer offers a clear architecture: 2 Micro/Line channels and 1 stereo AUX channel. To add body to a voice or soften speech, a reverb effect is available, with an ON/OFF selector on both channels. This is a real advantage for improved listening comfort without needing an external processor.

TWS: Doubling Sound Dispersion Without Complicating Setup

The TWS function (pairing a second powered system) allows extending sound coverage in a room, better distributing volume across the width, or managing two nearby zones. This approach is particularly useful in event settings when you want to maintain a pleasant level without pushing a single system to its limits.

4 Listening Modes to Adapt Sound to Content

Depending on the source (music, voice, "live" program), needs vary. Here, 4 listening modes are available: MUSIC, LIVE, HIFI, and SPEECH. The goal is to offer tailored frequency response curves to enhance speech intelligibility, musical listening comfort, or overall impact during performances.

Amplification and Protection: Power and Control

With announced amplification of Class D + AB (satellites), the system aims for a good balance between efficiency and durability. The DSP includes a limiter and several protections (short circuit, overvoltage, overheating), important elements for performance reliability, limiting unpleasant distortion, and safeguarding electronics under demanding conditions.

Acoustic Design: Multi-Speaker Column and Dedicated Subwoofer

The column is equipped with 4 x 3.5'' speakers and operates with a 250 Hz crossover (18 dB/Oct). The dedicated subwoofer handles the low end to add body, while the elevated dispersion favors better projection of voices and instruments in the listening area. The system is specified with a frequency response of 50 Hz to 20 kHz (-10 dB), covering common uses in light sound reinforcement.

Technical specifications

Battery	No	Media Player	Bluetooth
Number of channels	2 channels	Speaker structure	wood
Bluetooth	Yes	Inputs	minijack, USB, combo XLR/jack
Speaker diameter	8", 3,5"	Outputs	XLR
Number of speakers	5	Color	Black
EQ	Yes	Power output	1680 W

Power	480W RMS / 880W PROG / 1680 MAX	Columns	4 x 3.5'' speakers
Frequency response	50 Hz - 20 kHz (-10 dB)	Directivity	120deg x 20deg
Sensitivity	95 dB	Crossover	250 Hz 18dB/Oct
SPL	121 dB	Subwoofer enclosure	MDF
Impedance	4 Ohms	Satellites	ABS
Amplification	Class D + AB (satellites)	Subwoofer dimensions	295 x 420 x 400 mm
Protection	DSP limiter, short circuit, overvoltage, and overheating	Column dimensions	107 x 107 x 534 mm
4 listening modes	MUSIC / LIVE / HIFI / SPEECH	Subwoofer weight	11.8 Kg
Mixer	2 Micro/Line channels + 1 stereo AUX channel	Weight per column	1.7 Kg
Connectivity	Bluetooth	Weight for 3 columns	4.1 Kg
TWS	pairing of a second powered system	Total weight (subwoofer + 3 columns)	15.9 Kg
Effect	Reverb with ON/OFF selector on both channels