LAB GRUPPEN ACN3C 3WAY STEREO-4 and 5WAY MONO CROSSOVER

In an active loudspeaker system the crossover network is connected, in the signal path,
before the power amplifiers. An active crossover network feeds separate signals to the
bass, mid, and treble power amplifiers. The power amplifiers in turn power the corresponding
loudspeaker drivers for the bass, mid, and treble ranges.
This method has several advantages, especially in large PA systems, compared to passive
dividing where the crossover network is connected between the power amplifiers and the
loudspeakers. You get for example lower distortion, in particular distortion that is caused by
loud bass tones which intermodulate with the mid, and treble ranges. An active system also
eliminates the power losses, associated with passive crossover networks.

LAB.GRUPPEN's ACN C crossovers are designed around a four-pole state variable filters,
which are derived from the theory of analog computers. The most common way to alter
crossover frequencies in such a circuit is to turn a multiple ganged potentiometer. However
most potentiometers have bad tolerances (20 % or worse), and these tolerances affect the
accuracy of the crossover frequencies and the flatness of the summed output.
A better way of altering the crossover frequency is applied in the ACN 2/3C; namely the use
of "Digital Hexcode" switches. This allows the use of close tolerance components, which
result in a crossover frequency accuracy better than 1 %.
By careful selection of these components, an optimum density of available crossover frequencies
has been created, especially in the region between 800 Hz and 2 kHz. This has made it possible
to achieve a continuity of phase and of group delay time together with the speaker system. This
leads in turn to an improved intelligibility in the vocal region.
12, or 18 dB/octave slopes can be ordered as an option. The 24/octave slope has equal phase
at the crossover frequency region, in accordance with Linkwitz-Riley. To achieve flatness in the
summed output, the high and lowpass filters meet each other at 6 dB.
Each of the outputs of the ACN 2/3C have been equipped with shelving equalization, which gives
an adjustable bass boost of upto +12 dB, and a treble boost of upto +12 dB. In the ACN 3C the
mid output has an additional shelving boost, but that works at a lower corner frequency. With the
help of this equalization it is possible to align the frequency response of the speaker system. You
can, for example, compensate the roll-off in the treble of so-called "Constant Directivity“-type horns.
It also means you negate the need, for an external (graphic) equalizer, in several applications.

Key Features:

3-way stereo or 4- and 5-way mono
Switchable crossover frequencies:
32 frequencies between 80 Hz and 4.8 kHz
No dangerous "x10 switches" or frequency knobs on the front
The standard slope is 24 dB/octave. Optional: 12 and 18 dB/octave slopes
Switchable subsonic filters
Front panel gain controls
Mute switch on all outputs
Mono bass switch
Electronically balanced inputs with transformer option

With the DSP 260 digital 2-in-6 sound system manager, DYNACORD is continuing its proud tradition in the fi eld of innovative digital signal processors.
Based on the most modern hardware, this system manager offers tried-and-tested as well as new algorithms for the simple and swift construction of active multi-way systems. As much importance has been attached here by the developers to high user-friendliness as to the realization of an extremely favorable price.
24-bit sigma-delta AD/DA converters and a 32-bit floating-point signal processor make possible a dynamic range of 111 dB. In addition to the two analog inputs, a digital stereo input in AES/EBU format is available. A -6 dB pad switch in front of the AD converters offers additional security against overload when the device is connected to mixing desks with very high output levels. The 6 individually mutable outputs are electronically balanced and available on XLR sockets. For all inputs and outputs, easily read LED level meters are provided on the front panel.
Users can choose whether to configure their own systems at the device itself using the controls and display provided or else by means of the intuitive editing software.
3-way stereo, 2-way stereo + FR, 4-way mono + FR etc. Furthermore, factory presets compatible with those of the tried-and-tested DSP-244 are available for Dynacord loudspeaker systems.
In terms of DSP, the device offers parametric and graphic EQs as well as a delay function in the input and crossover, channel EQ, channel delay and a level control with limiter in each output channel.
An RS-232 interface allows Master/Slave operation of multiple devices as well as GPI switching of settings. A PC (the editing software runs under Windows) can be connected via the USB interface on the front panel.
A variable parameter lockout function allows you to determine which settings and parameters can be accessed directly at the device. This is just one of many features that make the DSP 260 an ideal choice also for the rental business.
The wealth of features combined with its outstanding audio performance and favorable price commend this audio system manager for a multitude of professional applications.
General Mains Voltage 100-240 VAC 50-60 Hz Power Consumption 25W Audio Analog Inputs 2x XLR IN, electronically balanced, 2x XLR THRU OUT, electronically balanced Digital Inputs 1x XLR AES/EBU IN Nominal Input Voltage 1.23 V / +4 dBu Maximum Input Voltage (Without -6dB Analog Pad Engaged) 8.7 V / +21 dBu Input Impedance 10k ohm Common Mode Rejection -80 dB @ 1 kHz (typical) A/D Conversion 24-Bit Sigma-Delta Outputs 6x XLR OUT, electronically balanced Nominal Output Voltage 1.23 V / +4 dBu Maximum Output Voltage 8.7 V / +21 dBu Output Impedance 50 ohm D/A Conversion 24-Bit Sigma-Delta Frequency Response 10 Hz-22 kHz (+/- 0.5 dB) THD+N < 0.01% (band limited 22Hz-22kHz) Dynamic Range 111 dB unweighted, band limited 22 Hz - 22 kHz Interfaces USB USB Type B on front panel (PC Interface) 9-pin DSUB Software Confi gurable for GPI Preset Recall or Master/Slave Connection to second DSP 260 unit Signal Processing Sample Rate 48 kHz Data Format 24-Bit Internal Processing 32-Bit Floating Point Physical Dimensions (WxHx) 19 x 14 x 1.75 inches (482.6 x 355.6 x 44.45 mm) Weight (Net) 10.1 lb (4.6 kg) Weight (Gross) 13.0 lb (5.9 kg)

The VENU360 provides all the processing and flexibility you need between your mixer and amplifiers to optimize and protect your loudspeakers. With the latest advancements in dbxʼs proprietary AutoEQ and AFS algorithms, additional input channels, ethernet control via an Android, iOS, Mac, or Windows device, and updated wizards, the DriveRack VENU360 continues the DriveRack legacy of great-sounding, powerful, and affordable loudspeaker management processors, for a whole new generation.

• Three-input, six-output loudspeaker management system
• Four different mono- and stereo-output operating modes
• Individual crossover filter types including Butterworth, Bessel and Linkwitz-Riley, with selectable roll-off characteristics from 6dB to 48dB per octave
• Choice of high-, band- and low-pass filters for each input and output
• Dynamic EQ for level-dependent equalization and parametric EQ selectable for each channel
• “Zero" attack limiters on all output channels for optimal signal protection
• Automatic or manual-adjustable delays for all inputs and outputs allow for adjustment due to room temperature, phase and arrival time differences
• Link option via RS-485 network interface allows for linking multiple units for larger installation requirements
• Downloadable software enables single- or multiple-unit remote control utilizing a Windows based computer
• Sixty user-defined internal presets can bestored via software or on a PCMCIA card
• Internal universal power supply allows the unit to operate virtually anywhere

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

The Soundweb London BLU-160 offers configurable I/O, configurable signal processing and a high bandwidth, fault tolerant digital audio bus.

The BLU-160 has open architecture which is fully configurable through HiQnet™ London Architect. A rich palette of processing and logic objects and a "drag and drop” method of configuration provide a simple and familiar design environment.

This processor features a low latency, fault tolerant digital audio bus of 256 channels which uses standard Category 5e cabling giving a distance of 100m between compatible devices. Fiber media converters can be used to increase the distance between devices to over 40km.

Four card slots which accommodate analog inputs, analog outputs, digital inputs and digital outputs in banks of four facilitate many different device I/O configurations.

Analog Input Cards provide software configurable gain in 6dB steps up to +48dB per channel and software selectable Phantom Power per channel. Digital Input Cards and Digital Output Cards process AES/EBU and/or S/PDIF audio and offer a variety of clocking and syncing options. (Further information about the I/O cards can be found on dedicated datasheets)

Phantom Power, Sync, Signal Present and Clip information per channel is easily accessible, without the requirement for a PC, from clear front panel LED indication. Device-specific information such as Device Name, Device Type, Firmware Version Number, Time, IP Address and Subnet Mask is available from the front panel display. A bi-directional locate function allows devices to be identified both from and within HiQnet London Architect.

12 Control Inputs and 6 Logic Outputs allow the BLU-160 to be integrated with GPIO compatible devices. The Soundweb London Interface Kit, comprehensive documentation which details how Soundweb London systems can be integrated with third party control systems, is included within the installation of HiQnet London Architect.

The BLU-160 and the other members of the Soundweb London family provide the building blocks of the perfectly tailored system solution.

• Four Input / Output Card Slots
• Configurable Inputs / Outputs
• Analog Inputs (with Phantom Power per Channel)
• Analog Outputs
• Digital Inputs (AES/EBU and S/PDIF)
• Digital Outputs (AES/EBU and S/PDIF)
• Configurable Signal Processing
• Rich Palette of Processing and Logic Objects
• 256 Channel, Low Latency, Fault Tolerant Digital Audio Bus
• Clear Front Panel LED Indication
• Informative Front Panel Display
• Bi-Directional Locate Functionality
• 12 Control Inputs and 6 Logic Outputs for GPIO Integration
• Soundweb London Interface Kit for Third Party Control System Integration (Documentation)
• HiQnet Device
• Configuration, Control and Monitoring from HiQnet London Architect