Ashly Audio Protea 4.24PS 4-Channel Parametric EQ Sys Processor  

Product #181039

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Item Note:

This product has been discontinued but may be available as a Open Box item.

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Ashly Audio

4 channels of fully programmable parametric EQ.

The Protea 4.24PS 4-Channel Parametric EQ Sys Processor lets you install multiple channel parametric equalizers where tamperproof, precise audio equalization is required. Easily control and program the Protea EQ with Ashly's exclusive Protea System Software running on a PC or a MIDI controller. The Protea 4.24PS is housed in an all-steel, 2RU chassis, and has four independent channels of fully programmable 12 band parametric EQ with with limiter, high- and low-pass filter, and time delay functions.

Each parametric band allows for 1/25th to 3.3 octave Q, a twenty-four step/octave frequency adjustment from 20Hz to 20KHz and level control of +10/-20dB in 0.5dB increments. High and low shelf filters are adjustable from 1.6kHz to 20kHz and 20Hz to 240Hz, respectively. High and low pass filters are 24dB/octave adjustable from 20Hz to 10.6kHz and 33Hz to 20kHz, respectively. Time delay is adjustable up to 1.364 seconds.

Other features include 24-bit A/D-D/A conversion, 24-bit/100MHz digital processing, RS-232, and MIDI interface, linkable channels, +6dB/-infinity master gain, and 128 preset locations. Both units display individual channel numbers using 7-segment displays. Signal present and signal clip levels are indicated by discrete LEDs.

  • 24 Bit A/D - D/A Audio Resolution
  • 24 Bit/100MHz (x2) Digital Signal Processing
  • Four Channels of 12-Band Parametric EQ
  • Programmable Compressor/Limiter
  • Programmable Delay up to 1.364 Seconds
  • Programmable High and Low Pass Filters
  • Programmable High and Low Shelf Filters
  • Control From PC or MIDI
  • Contact Closure for External Recall of 6 Scenes
  • Balanced XLR and 1/4® Inputs and Outputs
  • Linkable Channels
  • +10/- 20dB Boost and Cut, 0.5dB increments
  • 128 Preset Locations, 50 Scenes
  • RS-232 Computer Interface
  • Full MIDI Implementation
  • 5-Year Worry-Free Warranty

Order today and put Ashley in control.


Protea 4.24PS 4-Channel Parametric EQ Sys Processor Specifications:

  • Input
    Type: Active Balanced
    Impedance: 18 K ohms
    Max. Level: +20dBu

    Type: Pseudo-Balanced
    Impedance: 200 ohms
    Max. Level: +20dBu

    Frequency Response: ±.25dB 20Hz-20kHz
    THD (20Hz-20kHz): : <.01% @ 1KHz, +20dBu
    Dynamic Range: >110dB (20Hz-20KHz) unweighted
    Output Noise: <-90dBu unweighted

    Type: Parametric
    Number: 4 X 12
    Bandwidth: 1/25 Octave to 3.3 Octave
    Frequency Resolution: 1/24 Octave
    Range: ± +10/-20 dB, 0.5dB Increments

    Power Requirements: 90-125VAC, 50-60Hz, 27W, 180-250VAC 50-60Hz, 27W
    Shipping Weight: 14 lbs
    Dimensions: 19"L x 3.5"H x 8"D
    I/O Connectors: XLR, 1/4"
    Environmental: 40-120 deg. F Noncondensing

    Threshold: -20dBu to +20 dBu; 1dB increments
    Ratio: 1.2:1 to Infinity, (1.2:1, 1.5:1, 2:1, 3:1, 4:1, 6:1, 10:1, 20:1, inf:1)
    Attack: 0.5ms to 50ms per dB (.5, 1, 2, 5, 10, 20, 50ms)
    Release: 10ms to 1 sec per dB; 1.2:1, 1.5:1, 2:1, 3:1, 4:1, 6:1, 10:1, 20:1, inf:1) (10, 20, 50, 100, 200, 500ms, 1 Sec)

    High Shelf Filter: 24dB/Octave
    Range: 20Hz to 10.6Khz

    Low Shelf Frequency: 24dB/Octave
    Range: 33Hz to 20.1KHz

    Maximum Delay: 1.364 seconds
    Increment: 20us

    Input A to D: 24 Bit
    Output D to A: 24 Bit
    Processor: 24 Bit, 56 Bit Accumulator
    Sample Rate: 48KHz
    Propagation Delay: 1.46ms
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