dbx 223XL – Stereo 2-Way, Mono 3-Way Crossover with Balanced XLR Connectors


Stereo 2/3 Way, Mono 4-Way Crossover.



dbx 483XL Overview

The 223XL is a stereo 2-way or mono 3-way crossover. It features Linkwitz-Riley 24dB per octave filters, while the inputs and outputs are balanced XLR jacks that are bolted down to the chassis. This insures that even if someone steps on a cable plugged into the unit, the resulting tension will not tear up the internal circuit boards.

Using a switch on the back panel, the user is able to select whether the system will operate in stereo 2-way or mono 3-way. Also on the back panel is where one can set whether or not to mono sum the LF (subwoofer) out. Most systems that use a subwoofer are mono subbed to take advantage of amplifier power, and because low frequencies are non-directional. More back panel switches select the range of the crossover frequencies individually for both channels of the 223XL. The crossover frequency controls have a green LED on the front panel, that indicates when the x10 switch on the back panel is activated. All these switches are on the back panel because it could be disastrous if they were to be changed accidentally during mid-program.

On the front panel, LED’s indicate whether the unit is in mono or stereo mode, and each channel has an input gain control for proper level setting. There’s a recessed 40Hz high pass filter on each channel to remove unwanted low frequencies. Both the low and high outputs on each channel of the 223XL have a gain control ranging from off to +6 dB to allow muting of individual outputs, and for level matching. Also, each output has a phase reverse switch, which can be internally reconfigured as a mute switch.

  • Mode switch for stereo 2-way or mono 3-way operation
  • 24dB per octave filters
  • 40Hz high pass filter on both both channels
  • Phase reverse switch on all outputs
  • XLR balanced ins and outs
  • Low frequency summed (subwoofer) output
  • x10 range switch on both channels
  • Individual level controls on all outputs




The best sound systems depend on advanced digital signal processing to really make them shine, and dbx delivers. One of the most well-respected dynamics processing companies in the industry, dbx offers complete equalization and speaker management systems, powered speaker optimizers, direct boxes, zone controllers, equalizers and more. In addition to years of leadership and expertise in the processing field, dbx has combined its detection and summing methods, known as True RMS Level Detection and True RMS Power Summing, to reflect the “true” sounds that are heard by the human ear. dbx’s patented integrated circuit designs can detect and process natural sounds over a broad range of signals. This technology helps musicians ensure that their voices are heard at their best. DBX Nepal: All kinds of DBX product's are available in Nepal. DBX is a family of noise reduction systems developed by the company of the same name.



Input Connectors XLR
Input Type Electronically balanced/unbalanced, RF filtered
Input Impedance Balanced >50k ohm, unbalanced >25k ohm
Max Input >+21dBu balanced or unbalanced
CMRR >40dB, typically >50dB at 1kHz
Output Connectors XLR
Output Type Impedance-balanaced/unbalanced, RF filtered
Output Impedance Balanced 200 ohm, unbalanced 100 ohm
Max Output >+21dBu balanced/unbalanced into 2k or greater
Bandwidth 20Hz to 20kHz, +/-0.5dB
Frequency Response < 3 Hz to > 90 kHz, +0/-3 dB
Signal to Noise Ratio Ref: +4 dBu, 22 kHz measurement bandwidth
Signal-to-Noise (Stereo Mode) >94dB (Low Output), >92dB (High Output)
Signal-to-Noise (Mono Mode) >94dB (Low Output), >93dB (Mid Output), >92dB (High Output)
Dynamic Range > 114 dB, unweighted, any output
THD+Noise < 0.004% at +4 dBu, 1 kHz; < 0.04% at +20 dBu, 1 kHz
Interchannel Crosstalk < -80 dB, 20 Hz to 20 kHz
Crossover Frequencies (Stereo Mode) Low/High: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting)
Crossover Frequencies (Mono Mode) Low/Mid: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting); Mid/High: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting)
Crossover Filter Type Linkwitz-Riley, 24 dB/octave, state-variable
Low cut Switch Activates 40 Hz Butterworth, 12 dB/octave high-pass filter, one switch per channel.
Phase Invert Switch Inverts the phase at the output, one switch per output.
x1 / x10 Switch Multiplies the low-high(mono: low/mid and high/mid) crossover frequency range of the front-panel markings by a factor of 1 or 10, one switch per channel.
Mode Switch Selects stereo 2-way or mono 3-way operation and disables all LEDs for controls that are non-functional in the selected mode.
LF Sum Switch Selects normal (stereo) or mono-summed low frequency operation and disables Ch 2’s low output phase invert LED to indicate that this output is not operational in the LF sum mode.
Indicators Stereo Operation (Green); Mono Operation (Yellow); Low Cut (Red-per channel); x10 (Green-per channel); Phase Invert (Red-per output)
Operating Voltage 100 VAC 50/60 Hz; 120 VAC 60 Hz 230 VAC50 HZ
Power Consumption 15W
Power Connector IEC receptacle
Dimensions 1.75″ H X 19″ W X 6.9″ D (4.4cm x 48.3cm x 17.5cm)
Unit Weight 3.7 lbs. (1.7 kg)
Shipping Weight 5.4 lbs. (2.5 kg)


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