Ashly WR-2, WR-5, WR-1 manual 2b Hpf/Lpf Crossover, Butterworth

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Operating Manual - ne24.24M Matrix Processor

8.2b Hpf/Lpf - Crossover

Bandpass or crossover func- tions on the Protea ne24.24M are available only on the output chan- nels. Every channel's crossover consists of a high pass filter (HPF) and a low pass filter (LPF), along with the frequencies and filter types used. Each output's cross- over section is essentially a bandpass filter, making it neces- sary for the user to map out ahead of time which outputs will be used for the various frequency bands, and set the overlapping filter fre- quencies and types accordingly. Note: The High Pass Filter de- termines the lower frequency limit of the signal, while the Low Pass Filter determines the upper fre- quency limit. Be careful not to ac- cidentally send low frequency sig- nals to high frequency drivers. Check the loudspeaker specifica- tions to determine a safe operat- ing frequency range.

The frequency range for the high pass filter (HPF) is 20Hz to 20kHz, with an option to turn the filter off at the low end of the frequency selection. The low pass filter (LPF) offers the same frequency range, with the "off" option at the high end of the frequency selection.

There are eleven types of filters available in the crossover section, each suited to a specific preference or purpose. The slope of each filter type is defined by the first characters in the filter type, 12dB, 18dB, 24dB, or 48dB per octave. The steeper the slope, the more abruptly the "edges" of the pass band will drop off. There is no best filter slope for every application, so experiment to see which one sounds most pleasing in a specific system. The Ashly default crossover filter is 24dB/octave Linkwitz-Riley, but of course they can be changed to suit the application.

In addition to the frequency and slope, crossover filters can be selected as having Butterworth, Bessel, or Linkwitz- Riley response. These refer to the shape of a filter's slope at the cut-off frequency, affecting the way two adjacent pass bands interact at the crossover point. 24dB/octave Linkwitz-Riley filters produce a flat transition through the crossover region, assuming both overlapping filters are set to the same frequency, slope, and response type. 24dB/oct Linkwitz- Riley filters are the industry standard, the easiest to use, and the filter type recommended by Ashly. Other filter types are available, but may require polarity switching or other adjustments for proper results. The following paragraphs offer a summary of the three filter types as used in the ne24.24M crossovers.

Butterworth

Butterworth filters individually are always -3dB at the displayed crossover frequency and are used because they have a "maximally flat" passband and sharpest transition to the stopband. When a Butterworth HPF and LPF of the same crossover frequency are summed, the combined response is always +3dB. With 12dB per octave Butterworth crossover filters, one of the outputs must be inverted or else the combined response will result in a large notch at the crossover frequency.

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Contents Ashly Audio INC Operating ManualTable Of Contents This Apparatus Must be Earthed AC Power Requirements IntroductionUnpacking Front Panel Features Output Connections Rear Panel FeaturesLogic Inputs Preset Recall Input Connections0-5V Remote Level Control 10/100 Ethernet Control JackData In/Data Out Connection Expansion Module InstallationFactory Reset Switch AC Inlet and Power SwitchProtea NE Software How to get Protea NE Software1a Input Mute Connecting the ne24.24M to a computer using EthernetAudio Functions Input Audio Functions1d Input Gain 1c Phantom Power1e Input Delay 1c Push To Talk MicOperating Manual ne24.24M Matrix Processor 1h Autoleveler 1g Noise Gate1k Remote Level Control Output Audio Functions1i Ducker 1j Matrix RoutingButterworth 2b Hpf/Lpf Crossover2d Output EQ 2c Output DelayBessel Linkwitz-Riley2g Output Mute Channel Preset and Sub Preset File ManagementOther Software Functions 2f Output Compressor/Limiter10.1 WR-1 Volume Control Copying Settings to Another Input Or OutputProgram Upgrade Remote Control10.3 WR-5 Programmable Zone Controller 10.2 WR-2 Contact Closure Preset RecallCommon WR-1 Wiring DiagramDimensions GPO Expansion Module Wiring ExamplesTroubleshooting Tips 12.1 Audio Problems 12.2 RS-232 Data Communications ProblemsWarranty Information SpecificationsInput by 8 Output Boardroom System Typical ApplicationsNe24.24M Back Panel Left / Center / Right Theater System

WR-2, WR-1, WR-5 specifications

The Ashly WR series, comprising the WR-5, WR-1, and WR-2 models, is a lineup of high-performance wall controllers designed to enhance the user experience in professional audio environments. These devices are particularly useful in applications such as classrooms, conference rooms, and studios, providing intuitive control over various sound systems.

The WR-5 is the flagship model of the series, featuring a compact design that supports multiple zones. One of its standout characteristics is its ability to control various audio source devices, allowing users to select different inputs and adjust volume levels in distinct areas. The WR-5 is equipped with a large, easy-to-read LCD screen, which provides visual feedback on settings and selected configurations. Its Ethernet connectivity allows for seamless integration with compatible systems, making remote management and control straightforward.

The WR-1 is a versatile single-zone controller designed for simplicity. It features a rotary volume knob and a push-button for mute, making it an ideal choice for users who prioritize ease of use. The WR-1 can be integrated into existing setups with minimal effort, and its user-friendly interface ensures that anyone can operate the system without requiring extensive training. The unit supports audio over Ethernet, which allows for flexible placement and installation in various settings.

The WR-2 is designed for dual-zone control, offering similar features to the WR-1, but with the added benefit of managing two distinct audio zones. This model supports individual volume control for each zone, making it perfect for environments where different audio experiences are needed in separate areas. Like its counterparts, the WR-2 employs robust Ethernet connectivity, ensuring that it can communicate effectively with compatible audio systems for a cohesive overall sound experience.

All three models in the Ashly WR series are built with high-quality materials and innovative technology, ensuring durability and reliable performance. They feature intuitive layouts and responsive controls, making them suitable for a broad range of audio applications. Whether it is in a corporate environment or an educational setting, the Ashly WR series provides a sophisticated yet user-friendly solution for managing audio systems effectively.

In conclusion, the WR-5, WR-1, and WR-2 controllers are excellent options for anyone looking to streamline their audio control experience while maintaining high-quality sound management in diverse environments.
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