dbx 234s User manual

Complete Loudspeaker Management System
Features
234s/234xs Crossover
More sound to your amps and speakers
The secret to making speakers sound great lies with the crossover you use. With the dbx® 234s and 234xs Crossovers 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 234 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 234 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 234 is a dual channel crossover with all the features you would expect from a professional product. They feature
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 ¼” TRS (234s) and XLR (234xs) inputs and outputs.
<TRS differentially balanced ins and outs (234s)
<XLR balanced ins and outs (234xs)
<Mode switches for mono 4-way or stereo
2-way/3-way operation
<Low frequency summed (subwoofer) output
<x10 range switch on both channels
<40 Hz 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
Stereo 2-Way/Mono 3-Way/Mono 4-Way Crossover
Who uses this product:
BANDS DJsSOUND
INSTALLATION STUDIO
dbx Professional
Products
8760 S. Sandy Pkwy.
Sandy, Utah 84070
801.568.7660 PHONE
801.568.7662 FAX
801.568.7583 INT’L FAX
[email protected]
www.dbxpro.com

Stereo 2-Way/Mono 3-Way/Mono 4-Way Crossover
234s/234xs Crossover
dbx engineers are constantly working to improve the quality of our products. Specifications are, therefore subject to change without notice.
234xs Rear Panel
234s Rear Panel
234s/234xs Front Panel*
*Note: There are no differences between the 234s and the 234xs front panels.
Therefore, the 234s is shown to represent both the 234s and the 234xs.
INPUTS:
Connectors: 1/4” TRS (234s) / Female XLR (234xs) (pin 2 hot)
Type: Electronically balanced/unbalanced, RF filtered
Impedance: >50kΩ balanced, >25kΩ unbalanced
Max Input Level: >+22dBu balanced or unbalanced
OUTPUTS (234s):
Connectors: 1/4” TRS
Type: Impedance-balanced/unbalanced, RF filtered
Impedance: Balanced 200Ω, unbalanced 100Ω
Max Output Level: >+21dBu balanced/unbalanced into 2kΩor greater
OUTPUTS (234xs):
Connectors: XLR
Type: Electronically-balanced/unbalanced, RF filtered
Impedance: Balanced 60Ω, Unbalanced 30Ω
Max Output Level: >+20dBu balanced/unbalanced into 600Ωor greater
CROSSOVER FREQUENCIES:
Stereo Mode:
Low/High: 45Hz to 960Hz or 450Hz to 9.6kHz (x10 setting)
Low/Mid: 45Hz to 960Hz or 450Hz to 9.6kHz (x10 setting)
Mid/High: 450Hz to 9.6kHz (x10 setting)
Mono Mode:
Low/Low-Mid: 45Hz to 960Hz or 450Hz to 9.6kHz (x10 setting)
Low-Mid/High-Mid: 450 Hz to 9.6 kHz
High-Mid/High: 450Hz to 9.6kHz
Filter Type: Linkwitz-Riley, 24 dB/octave, state-variable
FUNCTION SWITCHES:
Front Panel:
Low Cut: Activates 40Hz 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:
x10: Multiplies crossover frequency range by 10, one switch
per channel
Mode: Selects stereo/mono and 2/3/4-way operation
LF Sum: Selects normal (stereo) or mono-summed low
frequency operation
INDICATORS:
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/-0.5dB
Frequency Response: < 3Hz to > 90kHz, +0/-3dB
Dynamic Range: >106dB, unweighted, any output
THD+N: < 0.004% at +4 dBu, 1kHz
< 0.04% at +20 dBu, 1kHz
Interchannel Crosstalk: <-80dB, 20Hz to 20kHz
Common Mode Rejection: >40dB, typically >55dB @ 1kHz
Signal-to-Noise: Ref: +4dBu, 22kHz measurement bandwidth
Stereo: Mono:
Low Output: > 94dB > 94dB
Low-Mid Output: > 94dB
Mid Output: > 93dB
High Mid Output: > 92dB
High Output: > 90dB > 88dB
POWER SUPPLY:
Power Requirements 15 Watts
Operating Voltage 100 VAC 50/60Hz; 120VAC 60Hz; 230 VAC 50/60Hz
Operating Temperature 32°F to 113°F (0°C to 45°C)
PHYSICAL:
Dimensions 1.75” x 6.9” x 19” (4.5cm x 17.5cm x 48.26cm)
Weight Net Weight: 4.0 lbs/1.8 kg
Shipping Weight: 5.8 lbs/2.6 Kg
Specifications
dbx engineers are constantly working to improve the quality of our products. Specifications are, therefore subject to change without notice.
dbx Professional
Products
8760 S. Sandy Pkwy.
Sandy, Utah 84070
1.801.568.7660 PHONE
1.801.568.7662 FAX
1.801.568.7583 INT’L FAX
[email protected]
www.dbxpro.com
Part number: 18-0848