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311 - 2way Crossover w/ Subwoofer Out Overview The 311 Crossover may be used as a stereo 2-way crossover network and has the addition of the subwoofer output for low-end frequency reinforcement. It employs 24dB / octave state-variable, Fourth-order Linkwitz-Riley filters that guarantee properly phased outputs at all frequencies which is optimal for the proper acoustic summing of common signals from adjacent drivers in the crossover region. Each channel features independent high and low output level controls and a crossover frequency rotary control which covers a wide range (250hz to 6khz). All three outputs have a 30 cycle low cut switch to eliminate low-end rumble. The subwoofer features an independent output level and rotary control for frequencies in the 50hz to 250hz range.
311 - 2way Crossover w/ Subwoofer Out Features:
Stereo 2-way crossover Subwoofer output Fourth-order Linkwitz-Riley filters (24dB / octave state-variable) Independent high and low output level controls Crossover frequency rotary control (250hz to 6khz) 30 cycle low cut switch Independent output level and rotary control (50hz to 250hz) | 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.
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 200 ohm, unbalanced 100 ohm |
Max Output |
>+21dBu balanced/unbalanced into 2k ohms or greater |
Bandwidth |
20Hz to 20kHz, +/-0.5dB |
Frequency Response |
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 |
Interchannel Crosstalk |
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 2ʼs 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) |
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With 6 inputs and 4 outputs the dbx ZonePro? 640 and 641 provide flexible signal routing,
powerful DSP processing and multiple control interfaces for Commercial Audio applications.
Designed to offer superior system sonic performance and flexibility, the 640/641 deliver the
highest quality tools available. Even the input and outputs connectors were chosen for their
standard usage and reliability. The ZonePro products offer Euroblock connectors for balanced
signals and RCA connectors for interfacing with consumer equipment often used in commercial
applications; there is also a simple analog input buss that allows inputs to be sent from one
unit to the next for unit and job scalability. The 640 and 641 provide every necessary processing
tool, from the input processing like gain control and EQ available on all inputs to highly sophisticated
and specific functions such as selectable paging microphone processing including Gating,
De-Essing, Auto Gain Control, Compression and Feedback Suppression. The heart of the
ZonePro products is the Routing module that provides of course Primary Source Selection
but also Source Ducking for Paging and Priority Override. The outputs also offer a wealth of
processing designed for commercial applications like our patent-pending AutoWarmth? function
that was co-developed with JBL to provide natural low frequency extension at any signal level.
Each output also offers EQ, Bandpass and Crossover filters, Limiting and Delay for system
optimization. With the ZonePro? every tool is at your disposal to maximize the response of
your system.
Beyond processing, the ZonePro? products offer multiple forms of control to further extend the
versatility of your system. From easy-to-use wall panel Zone Controllers for standard end-user
functions like source select and volume control to advanced system control including a built-in
Real Time Clock that can provide programmable system changes throughout the day or week.
For system setup and monitoring the ZonePro Designer software provides an intuitive interface
and a speedy setup Wizard for configuring and editing all system parameters.
The ZonePro? 640 and 641 will take your Commercial Audio system to the next level with advanced
processing, versatility and control.
? Advanced Feedback Suppression (AFS?)
? Autowarmth?
? Auto Gain Control
? Compression
? Limiting
? Noise Gating
? Notch Filtering
? Bandpass and Crossover Filters
? Parametric EQ
? Security Lockout
? Wall Panel Control
? RS-232 Control
? Windows? 2000 and XP GUI
? IEC, UL and CSA Approvals
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With 12 inputs and 6 outputs and Ethernet control the dbx ZonePro? 1260 and 1261
are the newest members of the ZonePro? family providing a complete suite of signal
processing and control for Commercial Audio applications.
Designed to offer superior system sonic performance and flexibility, the 1260/1261 deliver
the highest quality tools available. Even the input and outputs connectors were chosen for
their standard usage and reliability. The ZonePro products offer Euroblock connectors for
balanced signals and RCA connectors for interfacing with consumer equipment often used
in commercial applications; there is also a simple analog input buss that allows inputs to be
sent from one unit to the next for unit and job scalability. The 1260 and 1261 provide every
necessary processing tool, from the input processing like gain control and EQ available on all
inputs to highly sophisticated and specific functions such as selectable paging microphone
processing including Gating, De-Essing, Auto Gain Control, Compression and Feedback
Suppression. The heart of the ZonePro products is the Routing module that provides of course
Primary Source Selection but also Source Ducking for Paging and Priority Override. The outputs
also offer a wealth of processing designed for commercial applications like our patent-pending
AutoWarmth? function that was co-developed with JBL to provide natural low frequency extension
at any signal level. Each output also offers EQ, Bandpass and Crossover filters, Limiting and Delay
for system optimization. With the ZonePro? every tool is at your disposal to maximize the response
of your system.
Beyond processing, the ZonePro? products offer multiple forms of control to further extend the
versatility of your system. From easy-to-use wall panel Zone Controllers for standard end-user
functions like source select and volume control to advanced system control including a built-in
Real Time Clock that can provide programmable system changes throughout the day or week.
For system setup and monitoring the ZonePro Designer software provides an intuitive interface
and a speedy setup Wizard for configuring and editing all system parameters. The addition of
Ethernet control means that not only will it work with standard network equipment, but it can also
be accessed from remote dialup locations or from wireless access points.
The ZonePro? 1260 and 1261 will take your Commercial Audio system to the next level with advanced
processing, versatility and control.
? Advanced Feedback Suppression (AFS?)
? Autowarmth?
? Auto Gain Control
? Compression
? Limiting
? Noise Gating
? Notch Filtering
? Bandpass and Crossover Filters
? Parametric EQ
? Security Lockout
? Wall Panel Control
? RS-232 Control
? IEC, UL and CSA Approvals
ZonePro? 1260/1261 Specifications
ANALOG INPUT
Number of Inputs:
12 Total (2) Switchable mic or line, (8) RCA, and (1)
S/PDIF
Connectors:
Euroblock (Line and Mic) RCA (Source)
Type:
Impedance (Euroblock):
> 50kΩ Balanced, >25kΩ Unbalanced, RF Filtered
Impedance (RCA):
>25kΩ Unbalanced, RF Filtered
Max input line level:
+20dBu Mic/Line, +12dBu RCA
CMRR:
> 40dB, typically >55db @ 1kHz
Mic Pre gain:30 to 60dB
Mic EIN:
> 118dB, 22Hz-22kHz, 150Ω Source Impedance
Mic Phantom Power:
15V
ANALOG OUTPUTS
Number of Outputs 6
Connectors: Euroblock
Type:
Electronically balanced, RF filtered
Impedance:
120 ohms balanced, 60ohm unbalanced
Max Output Level: +20dBu
A/D PERFORMANCE
Type:
dbx Type IV? conversion system
Dynamic Range line:
>113 dB, A-weighted, >110 dB unweighted
Type IV dynamic range:
>119 dB, A-weighted, 22kHz BW
>117 dB, A-weighted, 22kHz BW
Sample Rate: 48kHz
D/A PERFORMANCE
Dynamic Range:
112 dB A-weighted, 109dB unweighted
SYSTEM PERFORMANCE
Dynamic Range:
>110 dB A-weighted, >107dB unweighted
THD+N:
0.003% typical at +4dBu, 1kHz, 0dB gain
Frequency Response:
20Hz - 20kHz, +/-0.5dB
Interchannel Crosstalk:
>80dB typical
Crosstalk input to output:
>80dB
Propagation Delay
0.6 msec
POWER REQUIREMENTS
Operating Voltage:
100-240 VAC, 50/60Hz
Power Consumption:
27 Watts
Physical:
Weight:
6.8 lbs.(3.1 kg) Shipping weight 8.8 lbs. (4.0 kg)
Dimensions:
1.75? H x 5.75? D x 19? W |
Power supply: |
100-240 V AC, 50/60 Hz
6 V DC 800 mA |
Power connection: |
Mains input via Coaxial power connector (M) mounting version power supply cord with AC adapter (provided) |
Frequency range: |
10 - 30000 Hz |
THD: |
<0,005 % at 1 kHz |
DSP: |
Digital signal processor |
Impedance: |
Input: 10 kOhm
Output: 50 Ohm |
Gain: |
Output: -50 dB to +12 dB |
Filter: |
Linkwitz-Riley; Butterworth; Bessel; 6db/oct; 12db/oct; 18db/oct; 24db/oct |
Delay: |
0 - 5 ms |
Dynamic range: |
Input: 114 dB
Output: 110 dB |
Sample rate: |
67 kHz |
Connections: |
Input: line via 2 x 3-pin XLR
Output: line via 6 x 3-pin XLR |
Crossover frequency: |
20-20000 Hz |
Max. level: |
Input: +22 dBu
Output: +9 dBu |
USB port: |
Typ B |
PC connect: |
DXO Software via USB, firmware can be updated |
Housing design: |
(19") 48.3 cm rack installation 1 U |
Dimensions: |
Width: 48,3 cm
Depth: 12,8 cm
Height: 4,45 cm |
Weight: |
1,77 kg |
Operating system: |
Win XP, Win Vista, Win 7, Win 10, OS X 10,5 or better |
| The DriveRack® PA2 provides all the processing you need between your mixer and amplifiers to optimize and protect your loudspeakers. With the latest advancements in dbx's proprietary AutoEQTM and AFSTM algorithms, a new input delay module for delaying the FOH system to the backline, Ethernet control via an Android®, iOS®, Mac®, or Windows® device, and updated Wizards, the DriveRack PA2 continues the DriveRack legacy of great-sounding, powerful, and affordable loudspeaker management processors, for a whole new generation.
Available Input Processing
- dbx Compression
- AFSTM (Advanced Feedback Suppression)
- Graphic EQ
- 8-Band Parametric EQ (adjusted when using the AutoEQ)
- Subharmonic Synthesis
Available Output Processing
- Crossover (supports full range, 2-way, and 3-way systems)
- 8-Band Parametric EQs (used for speaker tunings)
- dbx Limiting
- Driver Alignment Delays
Input |
(2) line inputs. (1) RTA Mic input |
Input Connectors |
(2) Female XLR line inputs. (1) Female XLR RTA Mic input |
Input Type |
Electronically balanced/RF filtered |
Input Impedance |
>50 kohm |
A/D Converter |
dbx Type IVTM Conversion System |
CMRR |
> 45dB |
Mic Preamp Phantom Power |
+15VDC (RTA) |
Mic Preamp Equivalent Input Noise (EIN) |
|
Output |
(6) Line Outputs |
Output Connectors |
Male XLR |
Output Type |
Electronically balanced, RF filtered |
Output Impedance |
120 Ω |
Max Output |
+20dBu |
A/D Dynamic Range |
112 dB A-weighted, 110 dB unweighted |
Type IV Dynamic Range |
123 dB with transient material, A-weighted, 22kHz BW; 121 dB with transient material, unweighted, 22kHz BW; 115 dB typical with program material, A-weighted, 22kHz BW |
Input Delay Length |
100ms |
Alignment Delay |
10ms per channel (60ms total) |
Sample Rate |
48kHz |
Dynamic Range |
>110 dB A-weighted, >107dB unweighted |
THD+Noise |
0.003% typical at +4dBu, 1kHz, 0dB input gain |
Frequency Response |
20Hz - 20kHz, +/- 0.5dB |
Interchannel Crosstalk |
|
Operating Voltage |
100-120VAC 50/60 Hz - EU: 220-240 VAC 50/60 Hz |
Power Consumption |
22 W |
Unit Weight |
5.25 lbs. (2.4 kg) |
Shipping Weight |
6.75 lbs. (3.1 kg) |
Dimensions |
1.75" (H) x 5.75" (D) x 19" (W), 4.4cm (H) x 14.6cm (D) x 48.26cm (W) |
D/A Dynamic Range |
112 dB A-weighted, 110dB unweighted |
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