Product Details

Delivery Time:3-5 days
Certification:CE,FCC,MSDS

Professional Usb Digital Audio Signal Processing 4 Input 8 Output Dsp Sound Processor

Introduction

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
RS-232.

Features
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

Specification

Input	Active Balanced, 18KΩ
Max. Input Level	+20dBu
Input Gain Range	-40dB to +12dB
Output	Active Balanced, 112Ω
Max. Output Level	+20dBu
Output Gain Range	-40dB to +12dB
EQ
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 to 2kHz, High Shelf 3.8kHz to 21.9kHz
Parametric Filter Boost/Cut Range	+15c-A30dB
Parametric Filter Frequency Range	19.7Hz to 21.9kHz, 1/24 Octave Steps
Parametric Filter Bandwidth	Four Octaves to 1/64 Octave
Input and Output Delay	0-682 milliseconds
Crossover
HPF and 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
Limiter
Threshold Range	-20dBu to +20 dBu
Ratio Range	1.2:1 to INF:1
Attack Time Range	0.5ms to 50ms
Release Time Range	10ms to 1 Second
Frequency Response	20Hz to 20KHz, ±0.25dB
THD	<0.01% @ 1KHz, +20dBu
Dynamic Range	>110dB 20Hz - 20KHz unweighted
Audio Sampling Rate	48KHz
Propagation Delay	1.46mS
Signal LEDs & Clip	Inputs: -20/Mute, -10, 0, +10, Clip (dBu or VU)
Outputs: -20/Mute, -10, 0, Limit Threshold, Clip (dBu orVU)
AC Requirements	Universal Power Supply, 100-240VAC, 50/60Hz, 20W max
Environmental	40°F - 120°F (4°C-49°C) Non-condensing
Weight	9 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.