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Ashly Protea DSP 4-Input x 8-Output Loudspeaker System Processor with USB, 20Hz-20kHz Frequency Response

SKU: AS48SP MFR: 4.8SP
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Key Features

  • Optimize your sound with this 4x8 loudspeaker system processor for superior audio quality.
  • Achieve pristine sound: wide 20Hz-20kHz frequency response ensures accurate signal processing.
  • Take control: User-friendly USB interface offers seamless setup and real-time adjustments.
  • Versatile signal processor: Perfect for live sound, studio recording, and fixed installations.
  • Ensure reliability: Benefit from a robust design and a comprehensive 5-year limited warranty.
  • Customize your audio: Advanced EQ filtering provides precise sonic shaping for any venue.
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Special Order?Estimated to Ship: 08/17/2025
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Ashly Protea DSP 4-In x 8-Out Loudspeaker System Processor Specifications

  • Input

    Active Balanced, 18kOhms

  • Input Level

    +20dBu (Max)

  • Input Gain Range

    -40dB-+12dB

  • Output

    Active Balanced, 112 Ohms

  • Output Level

    +20dBu (Max)

  • Output Gain Range

    -40dB-+12dB

  • AC Requirements

    Universal Power Supply
    100-240VAC, 50/60Hz, 20W

  • EQ Filter Types

    1st or 2nd Order High or Low Shelf, Parametric

  • Shelving Filter Boost/Cut Range

    +/-15dB

  • Shelving Filter Frequency Range

    Low Shelf: 19.7Hz-2kHz
    High Shelf: 3.8kHz-21.9kHz

  • Parametric Filter Boost/Cut Range

    +15dB/-30dB

  • Parametric Filter Frequency Range

    19.7Hz-21.9kHz, 1/24 Octave Steps

  • Parametric Filter Bandwidth

    Four Octaves to 1/64 Octave

  • Input/Output Delay

    0-682ms

  • HPF/LPF Frequency Range

    19.7Hz to 21.9kHz, Off

  • Available Filter Types

    12dB/Oct Butterworth
    12dB/Oct Bessel
    12dB/Oct Linkwitz-Riley
    18dB/Oct Bessel
    18dB/Oct Linkwitz-Riley
    24dB/Oct Butterworth
    24dB/Oct Bessel
    24dB/Oct Linkwitz-Riley
    48dB/Oct Butterworth
    48dB/Oct Bessel
    48dB/Oct Linkwitz-Riley

  • Threshold Range

    -20dBu-+20dBu

  • Ratio Range

    1.2:1 to infinity:1

  • Attack Time Range

    0.5ms-50ms

  • Release Time Range

    10ms-1Sec

  • Frequency Response

    20Hz-20kHz, +/-0.25dB

  • THD

    <0.01% at 1kHz, +20dBu

  • Dynamic Range

    >110dB, 20Hz-20kHz unweighted

  • Audio Sampling Rate

    48kHz

  • Propagation Delay

    1.46ms

  • Signal LEDs (dBu or VU): Inputs

    -20/Mute, -10, 0, +10, Clip

  • Signal LEDs (dBu or VU): Outputs

    -20/Mute, -10, 0, Limit Threshold, Clip

  • Environmental Temperature

    40-120 deg. F / 4-49 deg. C noncondensing

  • Dimensions (L x H x D)

    19 x 1.75 x 8.5" / 48.26 x 4.45 x 21.59cm

  • Weight

    3.31lbs / 7.3kg

About Ashly Protea DSP 4-In x 8-Out Loudspeaker System Processor

From live concerts to theater productions, the Ashly Protea 4.8SP 4-Input, 8-Output Digital Speaker Processor is a high-performance audio equipment designed to deliver superior sound quality and advanced digital signal processing (DSP) capabilities. This professional-grade loudspeaker system processor is ideal for a wide range of applications, including touring, venue installations, nightclubs, and large theater sound systems.

The Protea 4.8SP is equipped with 24-Bit A/D converters, ensuring high-resolution audio conversion for a crisp, clear sound. It boasts an extensive array of DSP functions, including crossover, time delay, compression, limiting, and feedback control. These features allow for precise audio tuning and control, enhancing the overall sound performance and ensuring a seamless audio experience.

One of the standout features of the Protea 4.8SP is its intuitive back-lit LCD display. This user-friendly interface makes it easy to navigate through the processor's extensive feature set, even in dimly lit venues. This makes it a reliable companion for professionals working in various lighting conditions.

The Protea 4.8SP also offers the convenience of storing up to 30 total presets. This means you can take a "snapshot" of all current settings and store complete control data for all channels and all audio functions. This feature allows for quick and easy recall of preferred settings, saving time and effort during setup.

In summary, the Ashly Protea 4.8SP 4-Input, 8-Output Digital Speaker Processor with USB, 20Hz-20kHz Frequency Response is a versatile and powerful audio tool, designed to meet the demanding needs of professional sound reinforcement.

Ashly Protea DSP 4-In x 8-Out Loudspeaker System Processor Features

  • Front Panel Parameter Control
  • Single rack space with XLR audio connections
  • Extremely intuitive user interface
  • Crossover, EQ, delay and limiter functions
  • Outputs assignable to any input
  • Front panel or PC programming and control with 4 levels of security
  • USB and RS-232 interface
  • Third-party control friendly
  • Balanced inputs and outputs
  • Linkwitz-Riley, Bessel and Butterworth filters
  • 12, 18, 24 and 48dB/octave slopes
  • Parametric EQ is 1/64th to 4 octave range
  • 682ms input and output delay (1,364ms total)
  • Limiter on each output
  • Individual input and output metering
  • Safety/Compliance: CE, FCC, RoHS

Warranty Information

This product has a limited warranty of 60 months for parts and 60 months for labor.

Product Documents

User Manual

Key Features

  • Optimize your sound with this 4x8 loudspeaker system processor for superior audio quality.
  • Achieve pristine sound: wide 20Hz-20kHz frequency response ensures accurate signal processing.
  • Take control: User-friendly USB interface offers seamless setup and real-time adjustments.
  • Versatile signal processor: Perfect for live sound, studio recording, and fixed installations.
  • Ensure reliability: Benefit from a robust design and a comprehensive 5-year limited warranty.
  • Customize your audio: Advanced EQ filtering provides precise sonic shaping for any venue.

What's in the box:

  • Ashly Protea DSP 4-In x 8-Out Loudspeaker System Processor
  • Ashly 5 Year Limited Warranty