Stereo 2/3 Way, Mono 4-Way Crossover with XLR Connectors

MSRP $339.95
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More sound to your amps and speakers

The secret to making speakers sound great lies with the crossover you use. With the dbx® 234xs Crossover you'll get great performance, ultra low-noise, rugged reliability and four decades of dbx knowledge and expertise in building the world's finest processors. The 234xs uses precision filters to separate the audio signal and direct the correct frequencies to your loudspeaker drivers. By directing only the specific frequency bands to each speaker driver the 234xs leaves your amplifiers free to use their full power on the usable signal eliminating distortion and giving your PA system a cleaner and better sound.

The dbx 234xs is a dual channel crossover with all the features you would expect from a professional product. It features Linkwitz-Riley 24dB per octave filters, independent output gain controls for level matching, output phase inversion, 40 Hz low cut filter, and optional mono summing of the low frequency (subwoofer) output. Everything in the design exudes great precision from the solid "click" controls to the high quality XLR inputs and outputs.

Recommended for: Portable.


  • XLR balanced ins and outs
  • Mode switches for mono 4-way or stereo 2-way/3-way operation
  • Low frequency summed (subwoofer) output
  • x10 range switch on both channels
  • 40Hz high pass (low cut) filter both channels
  • Phase reverse switch on all outputs
  • Individual level controls on all outputs
  • 24dB per octave Linkwitz-Riley filters (the professional standard)
  • Stereo/Mono status LEDs indicate the selected mode
  • dbx® 2 year parts and labor as standard
  • CSA NRTL/C approved
  • CE compliant



Input Connectors XLR
Input Type Electronically balanced/unbalanced, RF filtered
Input Impedance Balanced >50k ohm, unbalanced >25k ohm
Max Input >+22dBu balanced or unbalanced
CMRR >40dB, typically >55dB at 1kHz
Output Connectors XLR
Output Type Impedance-balanaced/unbalanced, RF filtered
Output Impedance Balanced 60 ohm, unbalanced 30 ohm
Max Output >+21dBu balanced/unbalanced into 2k ohms 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), >93dB (Mid Output), >90dB (High Output)
Signal-to-Noise (Mono Mode) >94dB (Low Output, Low/Mid Output); >92dB (High/Mid Output); >88dB (High Output)
Dynamic Range > 106 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/Mid: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting); Low/High: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting); Mid/High 450Hz to 9.6kHz (x10 setting)
Crossover Frequencies (Mono Mode) Low/Low-Mid: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting); Low-Mid/High-Mid: 450 Hz to 9.6 kHz; High-Mid/High: 450 Hz to 9.6 kHz
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/mono and 2/3/4-way operation
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 100-120 VAC 50/60Hz; 120 VAC 60Hz 230 VAC 50/60Hz
Operating Temperature 32°F to 113°F (0°C to 45°C)
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 4.0 lbs. (1.8 kg)
Shipping Weight 5.8 lbs. (2.6 kg)



234xs FAQs

Do I need to set the X10 switch, on the back panel of my crossover, to the in position?

You only need to set this setting to the "In" position when the desired crossover frequency is higher than what can be selected from the front panel controls. When the X10 button is switched "In", the set x-over ferquency will be 10 times higher than what is indicated on the screening around the "XOVER FREQ" potentiometer.

Do I need to press the LF Sum button in?

The LF Sum function is only used when you are using a stereo front of house system along with a mono subwoofer feed. This mono subwoofer feed may be a mono powered subwoofer, multiple mono powered subs paralleled (daisy chained) together, a bridged amplifier with two subwoofers paralled together or could even be multiple bridged amps paralleled together. Basically, whenever using a stereo FOH system where there is only one subwoofer feed needed.

Do I need to press the polarity inversion switches, on the front panel of my crossover, to the in position?

These switches invert the polarity of the outputs. Each output has its own polarity inversion switch. These should only be pressed in if the speaker manufacture recommends it or you have a polarity problem somewhere in your signal chain. Polarity inversion is a 180 degree phase shift. Having some of the speaker drivers out of polarity can cause the system to sound hollow, appear to be lacking in the lower frequencies or sound very �phasey�. These switches can come in handy when you are in a pinch, ready to start the show and notice a polarity problem. With these switches, you can quickly get the system back in phase and be ready to go on with the show.


Stereo 2/3 Way, Mono 4-Way Crossover with XLR Connectors

MSRP $339.95
Save $100.00!