FREE SG Delivery above SGD 100  |  All Prices inclusive of GST

FREE SG Delivery above SGD 100  |  All Prices inclusive of GST

SGD 2,122.00

Availability: On Request

4-IN/8-OUT 24-BITDIGITAL Speaker Processor

Price includes 7% GST


 The Protea System II 4.24C from Ashly is a four input, eight output digital crossover/system processor. In addition to setting crossover frequencies, each output may be assigned to any one or a combination of inputs, which allows the user to program four parametric filters, low or high shelf filters, delay for time delay adjustments, output gain, reverse polarity and a compressor/limiter for speaker protection.


A powerful tool for use in fixed installation and live sound applications, the unit utilizes state of the art DSP that includes 24-bit, 48kHz delta-sigma A/D converters with 128x over-sampling. D/A conversion utilizes 24-bit delta-sigma converters with 128x over-sampling. All inputs and outputs are precision balanced and RF protected using XLR connectors.


Aside from front panel control, the user can also program and control the 4.24C with Ashly's Protea System software (Windows 95, 98, 2000, XP and NT platforms,) AMX NetLinx, MIDI or SIA-Smaart software.




  • Four input/eight output programmable digital processor with crossover, EQ, delay and limiter functions

  • Extremely intuitive user interface

  • Outputs assignable to any input

  • Linkwitz-Riley, Bessel and Butterworth filters with 12, 18, 24 and 48dB/octave slopes

  • Parametric EQ with 1/64th to 4 octave range

  • Input and output delay

  • Limiter on each output

  • Individual input and output metering

  • Factory loaded/editable presets

  • Four levels of security

  • Programmable from the front panel, PC or via MIDI

  • Balanced inputs and outputs

  • Housed in a single rack space chassis


Filter Type Linkwitz-Riley, Bessel and Butterworth
Operating Modes Each output allows for setting crossover frequencies and may be assigned to any one, or a combination of inputs
Crossover Frequencies

High-Pass Filter: Off to 21.983kHz, 245 step increments

Low-Pass Filter: Off to 21.983kHz, 245 step increments

Gain Range +12/-40dB, 0.1dB increments
Front Panel Switches

Input select

Output select

13 Utility switches

Inputs 4 x XLR
Outputs 8 x XLR
Maximum Input Level +20dBu
Maximum Output Level +20dBu
Frequency Response 20Hz to 20kHz, +/-0.25dB
Dynamic Range >110dB, (20Hz-20kHz) unweighted
Noise <-90dBu unweighted
Dimensions (WxDxH) 19 x 6 x 1-3/4" (483 x 152 x 45 mm)
Weight 10lbs (shipping) (4.5 kg)


Threshold: -20dBu to +20dBu, 1dB increments

Ratio: 1.2:1 to infinity:1

Attack: 0.5 ms to 50 ms per dB

Release: 10 ms to 1 s per dB


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