DBX 223XS
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DBX
https://www.dbxpro.com
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A 1U Rack Crossover Designed for Modern Sound Reinforcement
The 223xs is a stereo active crossover designed to meet the demands of a professional sound processor while remaining easy to integrate into a rack. Its 1U format makes it a natural choice for fixed installations, touring racks, mobile sound systems, and DJ/sound setups that require reliable frequency band separation. The principle is clear: optimize multi-way speaker behavior by assigning each driver the frequency range it reproduces best, to gain in intelligibility, power handling, and bass clarity.
Who Is It For and What Is It Used For?
This active crossover is aimed at users who want to get the best out of a multi-way speaker system: sound providers, musicians equipped with sound systems, DJs, rehearsal rooms, houses of worship, bars with live music, or small stages. In 2-way stereo, you can, for example, split the signal between tops (highs/mids) and subwoofers. In 3-way mono, it becomes possible to separately control bass, midrange, and treble, which suits more elaborate systems. In all cases, the balanced XLR connectors facilitate integration into a professional audio chain and reduce noise on long cable runs.
Key Features: Control, Precision, and Easy Integration
Linkwitz-Riley 24 dB per Octave Filters: Clean Channel Separation
The 223xs uses Linkwitz-Riley filters at 24 dB per octave, a topology recognized in sound reinforcement for achieving an effective transition between bands, with coherent summation when channels are properly adjusted. Result: cleaner crossover, better controlled bass, and improved definition, particularly useful when pushing the system to high levels.
Per-Output Adjustments: Fine-Tune Your System to the Millimeter
Each channel features an individual level control to balance your system according to speaker efficiency, room acoustics, or placement. Phase inversion on all outputs provides a simple and effective tool to correct acoustic addition/subtraction issues (notably at the sub/top crossover), or to adapt to certain wiring and upstream processing.
40 Hz High-Pass and Bass Summation: Easier Subwoofer Feeding
The 40 Hz high-pass filter limits unnecessary excursion in the infrasonic range and protects your system from frequencies too low for certain configurations. The LF summation circuit offers a dedicated mono bass output, convenient for a subwoofer: you combine bass energy without multiplying processing, while maintaining a clear and efficient architecture.
Technical specifications
| Number of channels | 2 |
| U-height | 1 |
| Mode | 2-way stereo or 3-way mono |
| Filters | Linkwitz-Riley 24 dB per octave |
| High-pass filter | 40 Hz |
| Phase inversion | on all outputs |
| Level control | individual on outputs |
| Mono summable bass outputs | for subwoofer (LF summation) |
| Inputs | 2 inputs on XLR connector (balanced) |
| Outputs | XLR connector (balanced) |
| Maximum input level | +22 dBu |
| Maximum output level | +20 dBu (600 ohms) |
| Frequency response | 20 Hz to 20 kHz, +0 / -0.5 dB |
| Distortion + noise | less than 0.004 % at +4 dBu, 1 kHz |
| Signal-to-noise ratio (reference | +4 dBu, 22 kHz): stereo, greater than 94 dB (LF), greater than 91 dB (HF) |
| Dynamic range | greater than 106 dB |
| Crosstalk | less than -80 dB, 20 Hz to 20 kHz |
| Rack units | 1U |
| Dimensions | 486 x 175 x 45 mm |
| Weight | 1.7 kg |
Questions frequently asked
Can the DBX 223XS handle speakers and a subwoofer in stereo?
The 2-way stereo mode distributes the signal between the speakers and subwoofers. The low-frequency summation provides a dedicated mono bass output for the subwoofer.
What types of filters are used on this crossover?
Linkwitz-Riley filters at 24 dB per octave ensure frequency band separation. This slope allows coherent crossover between the drivers when the system is properly configured.
Is the connectivity suitable for professional sound reinforcement installations?
The 2 inputs and outputs use balanced XLR connectors. The maximum input level reaches +22 dBu and the output can deliver +20 dBu into 600 ohms.
Can the phase and level of each channel be adjusted?
Each output has an individual level control and phase inversion. These adjustments facilitate the alignment between subwoofer and speakers.
What rack space should be allocated for the 223XS?
The unit occupies 1U of rack space, with dimensions of 486 x 175 x 45 mm. It weighs 1.7 kg. A fixed high-pass filter at 40 Hz is also available to limit very low frequencies.
