The POPE Professional® SC-234 Precision Stereo 2 or 3-Way/ Mono 4-Way Crossover is a perfect addition to any sound reinforcement system. Designed for PA and fixed-installation applications, the model SC-234 may be used as a stereo 2 or 3-Way crossover network or as a mono 4-Way crossover network. The model SC-234 employs 24dB/ octave state-variable, fourth-order, Linkwitz-Riley filters. Fourth-order Linkwitz-Riley filters guarantee in-phase outputs at all frequencies which is mandatory for the proper acoustic summing of common signals from adjacent drivers in the crossover region.

Each channel features input level, high and low output level and crossover frequency rotary controls. A frequency "x10" switch is provided for varying the crossover frequency from the standard 80Hz - 920Hz to 800Hz - 9200Hz. Front- panel output mute switches are provided for each individual output to ease system setup. The rear panel features XLR and active balanced 1/4" TRS input and output connectors as well as a 2 or 3-Way/ 4-Way mode selector switch. Power for the SC-234 is internal.

The POPE Professional® SC-234 Precision Stereo 2 or 3-Way/ Mono 4-Way Crossover has the features and performance you need for any audio application requiring a crossover. Housed in a rugged all-steel chassis, the model SC-234 will provide years of reliable and continuous performance. For the latest in crossover technology today, check out the SC-234 at your favorite POPE Professional® dealer.



• XLR differentially balanced inputs and outputs
• 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 band outputs
• 24dB per octave Linkwitz-Riley filters (the professional standard)
• Stereo/Mono status LEDs indicate the selected mode
• CE compliant



Model SC-234
Article No. #10005
Class 2 or 3 Way Stereo / 4 Way Mono Analog Crossover
Connectors XLR
Type Electronically balanced/unbalanced, RF filtered
Impedance Balanced >50k ohm, unbalanced >25k ohm
Max Input Level >+21dBu balanced or unbalanced
CMRR >40dB, typically >50dB at 1kHz
Connectors XLR
Type Impedance-balanaced/unbalanced, RF filtered
Impedance Balanced 200 ohm, unbalanced 100 ohm
Max Output Level >+21dBu balanced/unbalanced into 2k or greater
Crossover Frequencies
Stereo Mode Low/High 45 Hz to 960 Hz or 450 Hz to 9.6 kHz
(x10 setting)
Mono Mode Low/Mid: 45 Hz to 960 Hz or 450 Hz to 9.6 kHz
(x10 setting)
High-Mid/High 450 Hz to 9.6 kHz
Low-Mid/High-Mid450 Hz to 9.6 kHz
Filter type Linkwitz-Riley, 24 dB/octave, state-variable
Function Switches
Front Panel (Low Cut) Activates 40 Hz Butterworth, 12 dB/octave high-pass filter, one switch per channel
Phase Invert Inverts the phase at the output, one switch per output
Rear Panel x1 / x10: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 Selects stereo 2-way, 3-way or mono 4-way operation and disables all LEDs for controls that are non-functional in the mono mode
LF sum 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.
Stereo Operation Green LED
Mono Operation Yellow LED
Low Cut Red LED per channel
x10 Green LED per channel
Phase Invert Red LED per output (3 per channel)
System Performance
Bandwidth 20Hz to 20kHz (+/-0.5dB)
Frequency Response < 3 Hz to > 90 kHz, +0/-3 dB
Signal-to-Noise: Ref +4 dBu, 22 kHz measurement bandwidth
Stereo Mode >94dB (Low Output)
>93dB (Mid Output)
>92dB (High Output)
Mono Mode >94dB (Low Output)
>94dB (Low/Mid Output)
>92dB (High/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
Power Supply
Operating Voltage 230 VAC 50 Hz
Power consumption 15W
Main Connection IEC 320 receptacle
Dimensions (H x W x D) 44 mm x 483 mm x 175 mm
Weight 1.8 kg (4.0 lbs)