Ashly Protea 4.8SP

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: 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

Specifications

• Input: Active Balanced, 18k Ohms
• Input Level: +20dBu (Max)
• Input Gain Range: -40dB–+12dB
• Output: Active Balanced, 112 Ohms
• Output Level: +20dBu (Max)
• Output Gain Range: -40dB–+12dB

• Unit Weight: SP4.8: 7.3lbs (3.3kg)
• Environmental: 40°F–120°F (4°C–49°C) noncondensing
• Dimensions: 483mm x 89mm x 216mm
• 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―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 ∞:1
• Attack Time Range: 0.5ms–50ms
• Release Time Range: 10ms–1Sec
• Frequency Response: 20Hz–20kHz, ±0.25dB
• THD: <0.01% @ 1kHz, +20dBu
• Dynamic Range: >110dB, 20Hz–20kHz unweighted
• Audio Sampling Rate: 48kHz
• Propagation Delay: 1.46ms

• Inputs: -20/Mute, -10, 0, +10, Clip
• Outputs: -20/Mute, -10, 0, Limit Threshold, Clip