Technical Notes & Specifications

Protea System II 4.24C Digital Crossover/System Processor

Architects Specifications

Protea System II 4.24C

The programmable digital crossover shall consist of four inputs and eight outputs with the ability to assign any output to any input. Each input channel shall include: a delay stage with a maximum delay of 682.5ms; a gain stage capable of +12dB boost and -40dB cut; six filter stages configurable to be a para- metric filter with a frequency range of 19.7Hz to 21.9KHz, 1/24th octave step and a +15dB boost, -40dB cut, or a 6 or 12dB/ octave high or low shelf filter. Each output channel shall include: a routing stage allowing the user to assign the output to any or a combination of input(s); a high pass/ low pass crossover filter stage with selectable slopes of 12, 18, 24 and 48dB per octave using Linkwitz-Riley, Bessel or Butterworth filter configurations; four filter stages configurable to be a parametric filter with a frequency range of 19.7Hz to 21.9KHz, 1/24th octave step and a +15dB boost, -40dB cut, or a 6 or 12dB/octave high or low shelf filter; a delay stage with a maximum delay of 21.33ms; a gain stage capable of +12dB boost and -40dB cut and the abil- ity to invert the phase; a full function compressor/limiter with

a threshold range of -20dBu to +20dBu. Each input and output

shall have individual mute capability. The programmable digi- tal crossover shall have a maximum in/out level of +20dBu. Frequency response shall be ±.25dB 20Hz to 20kHz. Dynamic Range shall be greater than 110dB (20-20KHz, unweighted) and SMPTE intermodulation distortion or THD shall be less than 0.01% at 1KHz, +20dBu. Input impedance shall be 18K ohms active balanced. Output impedance shall be acive balanced, 100 ohms. Inputs and outputs shall be balanced type on XLR con- nectors. A 2 X 20 backlit LCD display will show all parameter, function and utility information. LED indicators shall show signal level, clip, limit threshold and mute conditions. Full program- ming and control of the unit shall be from the front panel or via the front panel accessable RS-232 serial port using Ashly Protea System Software, or via MIDI. There shall be 30 factory presets that may be overwritten by the user and stored. There shall also be a four level security lockout feature. The programmable digital crossover shall weigh 10 lbs net and mount in a standard 19” rack using 1 space (1.75” high). The power requirement shall be 80-260VAC, 50-60Hz, 30W. The unit shall be an Ashly Audio Protea System II 4.24C Digital Crossover/System Processor.

Features:

•One Rack Space

•Four Inputs - Eight Outputs

•Outputs Assignable to Any Input

•Crossover, EQ, Delay and Limiter Functions

•Linkwitz-Riley, Bessel and Butterworth Filters

•12, 18, 24 and 48dB/Octave Slopes

•Parametric EQ: Full Bandwidth, 1/64th to 4 Octave Range

•Input and Output Delay

•Limiter on Each Output

•Intuitive User Interface

•Programmable by Front Panel, PC or

MIDI

•Individual Input and Output Metering

•Balanced Inputs and Outputs

•XLR Audio Connections

•Password Protected System Security

•Five Year Warranty

4.24C specifications

Ashly 4.24C is a versatile and powerful audio processor that has gained popularity among sound engineers and audio professionals for its robust features and innovative technology. Designed specifically for live sound reinforcement, installed sound systems, and broadcast applications, this digital signal processor stands out in a crowded market by combining flexibility, performance, and ease of use.

One of the key features of the Ashly 4.24C is its comprehensive digital signal processing capabilities. With 24 individual input channels and 24 outputs, the device supports extensive routing options, enabling audio engineers to manage complex setups with ease. The processor includes a 4-band parametric equalizer, compressor, limiter, and noise gate on every channel, allowing for precise sound tailoring. Additionally, the inclusion of 16 built-in presets makes it easy to switch between different audio settings in live sound environments.

The Ashly 4.24C utilizes cutting-edge technologies to achieve superior sound quality. D/A and A/D converters are of high fidelity, ensuring that the audio signals remain clear and detailed throughout the processing chain. The device also features 24-bit resolution at sample rates up to 96 kHz, ensuring that even the most demanding audio applications are handled with professional quality. This emphasis on audio fidelity is particularly important in live sound and broadcast applications, where every nuance of sound can significantly impact the overall experience.

Ease of use is another standout characteristic of the Ashly 4.24C. The unit comes equipped with a user-friendly interface that includes an intuitive touchscreen, which simplifies the navigation of its numerous controls and settings. This graphical interface allows for greater visual feedback, making it easier for sound engineers to make adjustments during performances or broadcasts without needing to memorize complex configurations.

In terms of connectivity, the Ashly 4.24C offers a variety of inputs and outputs, including analog XLR, digital AES/EBU, and even optional Dante networking capability for seamless integration into modern networked audio systems. This flexibility ensures that the processor can fit into various setups, from small venues to large concert halls.

Overall, the Ashly 4.24C combines advanced audio processing technology with user-centric design, making it an excellent choice for professionals seeking high-quality sound solutions. Its multitude of features and capabilities ensure it meets the demands of contemporary audio applications while maintaining an accessible and manageable interface for users.