Gold Member Since 2012
Audited Supplier
Guangzhou Sanway Professional Audio Equipment Co., Limited

Professional Graphic Processor, Ashly Protea 4.8sp Processor, Digital Audio Processor manufacturer / supplier in China, offering Protea4.8sp 4in&8out Digital Processor, Kara Dual 8 Inch 2 Way Line Array Speaker, DSP-10kq 4channels Digital Karaoke Power Amplifier and so on.

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Protea4.8sp 4in&8out Digital Processor

FOB Price: US $100-400 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $100-400/ Piece
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Port: Guangzhou, China
Production Capacity: 500PCS Per Month
Payment Terms: T/T, Western Union, Paypal

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Basic Info
  • Model NO.: Protea4.8SP
  • Application: Commercial
  • THD: <0.005%
  • Trademark: SANWAY OR OEM
  • Specification: CE. RoHS
  • HS Code: 8518220000
  • Noise: <95dB
  • Certification: CE, RoHS
  • Protea 4.8sp: 4 in X 8 out Digital Speaker Processor with USB.
  • Transport Package: Durable Cartons or Flight Case
  • Origin: Made in China
Product Description

Protea 4.8SP 4IN&8OUT Digital Dsp Audio Processor

The 4.8SP has four inputs and eight outputs. The front panel interface allows quick access to all control parameters by offering dedicated function buttons, eliminating the need for hidden sub-menus. For even faster set-ups and stronger visualization of Input/Output routing, EQ, and Filter curves, a USB port is provided for use with Protea NE Software. Full control by third party controllers is also available via

   The Protea 4.8SP  utilize state of the art DSP technologies, beginning with 24 bit, 48kHz delta-sigma A/D converters with 128x oversampling. Digital processing includes Gain, Parametric EQ, Shelving Filters, Time Delay, Crossover Functions, Compression, Limiting, and Matrix Routing, all taking place in twin 120MHz Motorola DSP56362 high performance DSP processors. D/A conversion uses 24 bit delta-sigma converters with 128x oversampling. All inputs and outputs are precision balanced and RF protected using XLR connectors.
1> Protea 3.6SP is a 3 Input, 6 Output Digital Speaker Processor
2> Protea 4.8SP is a 4 Input, 8 Output Digital Speaker Processor
3> Extensive Digital Professing
4> 24-Bit 49kHz A/D Converters
5> Built-in Limiter
6> Crossver, EQ and Delay
7> USB and RS-232 Interface 
InputActive Balanced, 18Kohms
Max. Input Level+20dBu
Input Gain Range -40dB to +12dB
OutputActive Balanced, 112
Max. Output Level+20dBu
Output Gain Range-40dB to +12dB
EQ Filter Types1st or 2nd Order High or Low Shelf, Parametric
Shelving Filter Boost/Cut Range±15dB
Shelving Filter Frequency RangeLow Shelf 19.7Hz to 2kHz, High Shelf 3.8kHz to 21.9kHz
Parametric Filter Boost/Cut Range+15dB/-30dB
Parametric Filter Frequency Range19.7Hz to 21.9kHz, 1/24 Octave Steps
Parametric Filter BandwidthFour Octaves to 1/64 Octave
Input and Output Delay 0-682 milliseconds
HPF and LPF Frequency Range19.7Hz to 21.9kHz, Off
Available Filter Types12dB/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 to +20 dBu
Ratio Range1.2:1 to INF:1
Attack Time Range0.5ms to 50ms
Release Time Range10ms to 1 Second
Frequency Response20Hz to 20KHz, ±0.25dB
THD<0.01% @ 1KHz, +20dBu
Dynamic Range>110dB 20Hz - 20KHz unweighted
Audio Sampling Rate48KHz
Propagation Delay1.46mS
Signal LEDs & ClipInputs: -20/Mute, -10, 0, +10, Clip (dBu or VU)
Outputs: -20/Mute, -10, 0, Limit Threshold, Clip (dBu orVU)
 AC RequirementsUniversal Power Supply, 100-240VAC, 50/60Hz, 20W max
Environmental 40°F - 120°F (4°C-49°C) Non-condensing
Weight9 Lbs
Dimensions 19.0" L x 1.75" H x 8.5" D (48.3 cm x 8.9 cm x 21.6 cm)
User interface 
Front Panel Interface :A backlit 2 x 20 character LCD displays channel and function settings. Dedicated buttons provide access to all audio functions and system tools. The display indicates the current preset number, then subsequently shows the selected input or output and its active control parameters. Five segment LED arrays on each input and output provide audio level information and mute status.
Protea NE Software:The computer interface uses Protea NE Software for Windows, which allows complete PC control of the unit through a USB jack. Protea NE software is supplied with each unit, or can be down-loaded at no cost from web site. Advantages of using the software include greater preset capacity, and a very intuitive visual representation of the audio routing and control process.
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