DBX 442 DRIVE RACK COMPLETE EQ – LOUDSPEAKER MANAGEMENT SYSTEM EX-DEMO

DBX-442  Complete Equalization and Loudspeaker Management System

442 DriveRack? Complete Equalization Management System. The DriveRack? 442
Complete Equalization Management System is the latest product in the DriveRack?
line. The 442 is based on the same operating system as the DriveRack? 480 and
offers the user four inputs and four outputs on XLR connectors. Each channel has EQ
in the form of a 9-Band Parametric or a 31-Band Graphic and Notch Filters. In addition
the 442 features a filter set that can be used to create a Highpass, Lowpass or Bandpass
filter. Dynamics processing is available on all channels with a Compressor/Limiter that
emulates the classic dbx? 160. The output section of the 442 offers delay, output level
and phase compensation. The 442 is also capable of running dual real-time analyzers
on channels three and four. A 480 master, a PC GUI, or a 480R remote can control the
442. Any combination of 480s, 481s, 482s and 442s can be controlled on a single
DriveRack? network consisting of up to 100 units.

Features

    * 4 Inputs and 4 Outputs
    * 31-band graphic or 9 band parametric equalizer on every input
    * Time Alignment Delay
    * Compressor/Limiter on every output
    * Multi-level Security System
    * Separate House and Show EQ with individual lockouts
    * Triple redundant back up of all parameters when running network, 480R and GUI
    * Type IV? Conversion System
    * Electronically balanced/RF filtered XLR Inputs and Outputs
    * Proprietary RS-485 Control Network
    * RS-232 PC Interface for computer display and configuration

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

The ARX EC-2 is a flexible yet affordable 24 dB per octave Phase Correct active crossovers.
It has 2 modes of operation; as either Stereo 2 way or a Mono 3 way units, with a switch on
the back panel selecting either mode.

Features
Ultra low noise circuitry
Totally phase aligned at crossover point
Switchable Dual Channel 2 way or Single Channel 3 way
Unique 'semi-fixed' crossover point
24dB per octave (Fourth Order) Linkwitz-Riley filters
Separate Summed Mono Output
Balanced Inputs and Outputs
Built in High Pass filters
Intuitive, 'user friendly' layout
Flawless performance in any audio environment

Tamper-Proof Crossover Points
The crossover points are determined internally by the value of 4 resistors per channel; changing
the resistor value changes the crossover point. This 'semi fixed' method avoids the pitfalls of
externally adjusted crossover points, making the crossover points tamper-proof once they are set.
Idle fingers can't fiddle with the crossover points and create havoc with the system!
As a handy guide, a list of common crossover points and their corresponding resistor values are
printed inside the unit's lid, and also set out in the Owner's Manual.
On the front panel are level controls for Low and High in dual channel 2 way mode, and Low, Mid
and High in single channel 3 way mode, with corresponding Outputs on the rear panel.

Balanced Inputs and Outputs
EC-2 has Balanced Inputs and Outputs, on XLR connectors.
The EC-2 also has an additional summed Mono Low output, for applications that need a Mono Low
feed (e.g. Left and Right full-range plus a single Sub Bass speaker).
High Pass Filter
There is also a preset 30 Hz HighPass filter to remove unwanted subsonics which can damage speakers
and waste amplifier power.
In addition, each output has up to +6 dB of gain available, to compensate for amplifiers and speakers of
differing sensitivities.
Universal AC Power
AC power range is a universal 100 to 120V or 220 to 240VAC, and is connected to the unit via a standard
IEC connector, with built-in fuse and voltage change switch.
Uncompromising Audio Quality
Innovative circuit design is pointless unless it delivers stunning sound quality, and here the EC-2 excels.
It has been designed for uncompromising audio quality, and to achieve this, Linkwitz Riley 24dB (Fourth
Order) state variable filters are used throughout, ensuring a smooth Phase Correct transition through the
crossover region.
From Stage Monitors to Studio Monitors, from Front of House to the Front room of your House, the ARX
EC-2 is a crossover that is suited to any application that requires flawless, transparent sound.
You'll never compromise on Quality when you choose ARX

T E C H N I C A L S P E C I F I C A T I O N S

Input Impedance Balanced 20 Kohms, Unbalanced 10 Kohms
Input Headroom + 21 dB
CMRR >45 dB, 20 Hz-20 KHz
Output Impedance Balanced 300 ohms, Unbalanced 150 ohms
Output Level (Max) + 21dB
Frequency Response 30Hz-20KHz +or- 0.5dB
Note: 30 Hz is a function of the High Pass filter
Signal to Noise ratio (Controls at Unity) -90 dB Unweighted, -93 dB 'A' weighted
Distortion 004% THD,0dB,1KHz
Dynamic Range 111 dB
Power Requirements 100/120 V AC, 220/240 V AC
Weight 5 lbs/2.2 Kg
Dimensions 19“W x 13/4“H x 6“D, 482 x 44 x 155mm
Input Connector type XLR
Output Connector type XLR
Crossover point frequencies are changed internally by varying the value of 4 resistors
per channel.

Front Panel Controls
Low and High Output controls for 2 way mode
Low, Mid and High Output controls for 3 way mode
Marker panels for labelling crossover assigns
2 way/ 3 way status LEDs
Rear Panel
Balanced XLR Inputs and Outputs
Additional summed mono Low output
2 way / 3 way mode switch

Providing 48-bit filter algorithms, 24-bit AD/DA conversion and a dynamic range of 115 dB, the DSP 244 sets new standards for digital loudspeaker controllers and processors. The DSP 244 is an universal Digital Sound System Processor that provides 2 inputs and 4 outputs; plus internal summing of the inputs 1 and 2. Via matrix it is possible to assign the outputs to any input or to the sum of the inputs. It is further possible to establish the following configurations: Stereo or Dual 2-Way systems, 3-Way + Direct and 4-Way systems, each with Mono Subchannel, but also full range systems. High and low-pass filters are provided for the frequency crossover functions in all operation modes. The selection includes Linkwitz-Riley, Butterworth and Bessel type filters with switchable slopes between 6, 12, 18 and 24 dB/oct. A huge number of additional filters offers extremely flexible correction of the frequency response. Each input incorporates a 5-band equalizer, allowing to assign high and low-pass, high and low-shelving or parametric peak-dip filters to its individual filter sections. Next to the frequency crossover filters, four additional filters are employed in each output channel, which also can be set to work as high or low-pass, high or low-shelving filters, parametric peak-dip filters, or all-pass filters. Additional filtering is provided through 2. order high-passes for the realization of B-6 alignment, or special LPN-filters (Low-Pass Notch filters) for correcting the frequency and phase responses of optimally vented woofer cabinets. Each channel additionally provides a delay, a polarity switch, a programmable level control and a digital compressor / limiter while the master delays are located in the input channels. Datasheets / ManualsBrochure (309KB)

Mains voltage 90 - 250 V AC / 50 - 60 Hz Power consumption 20 watts Safety class I Inputs 2 x XLR IN, electronically balanced, transformer optional available 2 x XLR OUT (Direct Out) Input voltage (nominal) 1.55 V / + 6 dBu Max. input voltage 24.5 V / + 30 dBu Input impedance 20 kohms Common mode rejection > 40 dB AD-conversion 24-bit, Sigma-Delta, 128 times oversampling, linear phase Outputs 4 x XLR OUT, electronically balanced Output voltage (nominal) 1.55 V / + 6 dBu Max. output voltage 8.7 V / + 21 dBu Output impedance