User Guide www.focusrite.
IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. The lightning flash with arrowhead symbol, within equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
TABLE OF CONTENTS IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 About this User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION Thank you for purchasing this Focusrite RedNet 4. RedNet 4 is a multichannel analogue mic/line preamplifier for use with a RedNet digital audio networking system. RedNet is a powerful, low latency, digital audio networking system designed specifically for music, recording studio and broadcast applications. It is based on Audinate’s Dante™, a well-established audio networking technology known for its extreme robustness.
About this User Guide This User Guide applies only to the RedNet 4 analogue interface. It provides information about installing a RedNet 4 and how to connect it into your studio system. You will also find a copy of the RedNet System User Guide included with the unit. This Guide provides a detailed explanation of the RedNet system concept, to help you achieve a thorough understanding of its capabilities.
Installation Guide Unit connections and features RedNet 4 - Front Panel 3 11 2 4 5 6 7 10 8 9 1. AC Power switch 2. Individual LEDs indicating signal level at each analogue input: 1 • Green – signal level above -42 dBFS • Yellow – signal level above -6 dBFS • Red – signal level has reached 0 dBFS 3.
. – switches an (analogue) high pass filter into circuit in the selected channel. The filter has a -3 dB point of 75 Hz and a slope of 18 dB/octave. 9. GAIN – a rotary encoder which adjusts the gain of the input channel between 0 and +63 dB in MIC mode, -12 and +42 dB in LINE mode and +14 and +68 dB in DI mode. The gain is indicated by the OLED numeric display [10]. 10. OLED display – indicates the channel currently selected for adjustment and gain setting. 11.
Physical Characteristics RedNet 4’s dimensions are shown in the diagram below: 247.5mm / 9.74" 465.0mm / 18.30" 76.2mm / 3" RedNet 4 requires 2U of vertical rackspace and at least 350 mm of rack depth, to allow for cables. RedNet 4 weighs 4.04 kg, and for installations in a fixed environment (e.g., a studio), the front panel mounting screws will provide adequate support. If the units are to be used in a mobile situation (e.g., flight-cased for touring, etc.
Other RedNet system components The RedNet hardware range includes various types of I/O interface and a PCIe digital audio interface card which is installed in the system’s host computer. All the I/O units can be considered as “BreakOut” (and/or “Break-In”) boxes to/from the network, and all are built in mains-powered, 2U 19” rackmounting housings. There are also three software items, RedNet Control (see below), Dante Controller and Dante Virtual Soundcard.
Appendix Connector pinouts 8-channel analogue line input connector Connector type: Applies to: 25-pin female Dsub ANALOGUE INPUTS 1-8 Pin Signal Pin Signal 1 Ch 8 ‘hot’ (+) 14 Ch 8 ‘cold’ (-) 2 Ch 8 screen 15 Ch 7 ‘hot’ (+) 3 Ch 7 cold (-) 16 Ch 7 screen 4 Ch 6 ‘hot’ (+) 17 Ch 6 ‘cold’ (-) 5 Ch 6 screen 18 Ch 5 ‘hot’ (+) 6 Ch 5 cold (-) 19 Ch 5 screen 7 Ch 4 ‘hot’ (+) 20 Ch 4 ‘cold’ (-) 8 Ch 4 screen 21 Ch 3 ‘hot’ (+) 9 Ch 3 cold (-) 22 Ch 3 screen 10 Ch 2 ‘hot’ (+
Microphone inputs Connector type: Applies to: 3-pin female XLR MICROPHONE INPUTS 1 2 3 Rear (solder side) of mating male connector Pin Signal 1 Screen 2 Signal ‘hot’ (+) 3 Signal ‘cold’ (-) Ethernet connector Connector type: Applies to: 12 RJ-45 receptacle ETHERNET Pin Cat6 Core 1 White + Orange 2 Orange 3 White + Green 4 Blue 5 White + Blue 6 Green 7 White + Brown 8 Brown 1 8 8 1
Performance Specifications Microphone Inputs Gain range 0 dB; 8 to 63 dB in 1 dB steps Type Classic ISA-based, electronically balanced, Zin = 2.4 kohms Max. input level +16 ±0.5 dBu; min. gain for 0 dBFS, Rs = 150 ohms, pad out Min. input level -47 ±0.5 dBu; max. gain for 0 dBFS, Rs = 150 ohms, pad out Frequency response 20 Hz – 55 kHz ±0.1 dB (-3 dB @ 80 kHz, fs = 192 kHz); Rs = 150 ohms THD+N < 0.
Power PSU Internal, Universal type, consumption 30 VA Front Panel Indicators Power Green Network connected Green Sync lock Green Sample rate Yellow x 5 Channel 1/2 source Yellow x 3 (mic/line/inst) Signal level Green x 8 (-42 dBFS); Yellow x 8 (-6 dBFS); Red x 8 (overload) Channel select buttons 8 Channel function controls Input source, HPF, phantom power, Gain encoder Channel display Colour OLED; channel number, input source, gain Focusrite RedNet Warranty and Service All Focusrite prod
This limited warranty is offered solely to products purchased from an Authorised Focusrite Reseller (defined as a reseller which has purchased the product directly from Focusrite Audio Engineering Limited in the UK, or one of its Authorised Distributors outside the UK). This Warranty is in addition to your statutory rights in the country of purchase. Registering your product For technical support, please register your product at: www.focusrite.
