Redbox RB-ML2 - Uncategorized Sonifex - Free user manual and instructions
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| Product Type | Audio Interface / Redundancy Switcher |
| Dimensions | 482 x 44 x 160 mm (19" rack, 1U) |
| Weight | 2.5 kg (approx.) |
| Power Supply | 100-240 VAC, 50/60 Hz, internal PSU |
| Power Consumption | 20 W max |
| Audio Inputs | 2 x balanced XLR (main + backup) |
| Audio Outputs | 2 x balanced XLR (main + monitor) |
| Switching Method | Automatic or manual with front panel switch |
| Frequency Response | 20 Hz – 20 kHz (±0.5 dB) |
| Dynamic Range | > 110 dB |
| THD+N | < 0.005% at 1 kHz |
| Indicators | Power, active input, fault LEDs |
| Controls | Manual priority switch, reset button |
| Protection Features | Overvoltage, short-circuit, reverse polarity |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -20°C to 70°C |
| Relative Humidity | 0% to 90% (non-condensing) |
| Chassis Material | Steel, black painted |
| Mounting | 19" rack, 1U, with included brackets |
| Cooling | Passive, no fan |
| Maintenance | Keep clean with dry cloth; no internal adjustments |
| Safety Certifications | CE, RoHS, FCC Class B |
| Spare Parts | Power supply unit, XLR connectors, front panel PCB |
Frequently Asked Questions - Redbox RB-ML2 Sonifex
How do I power the Redbox RB-ML2?
Connect the supplied IEC power cable to a mains outlet (100-240 VAC). The internal power supply will automatically adapt. The front panel Power LED will illuminate.
What is the purpose of the manual priority switch?
The manual priority switch allows you to force the unit to use either the main or backup audio input regardless of automatic switching logic. Use it for testing or if one source is known to be faulty.
How does automatic switching work?
The unit continuously monitors the main input signal level. If the main input signal drops below a threshold for a set time period (e.g., 2 seconds), it automatically switches to the backup input. Once the main input is restored, it may switch back after a debounce period.
Can I use the RB-ML2 with unbalanced audio?
The inputs are balanced XLR. For unbalanced sources, use a suitable adapter (XLR to TS/TRS) and ensure proper grounding. Signal quality may be slightly reduced.
What do the fault LEDs indicate?
There are three fault LEDs: Overload (red), Power Fail (red), and Input Fault (orange). Overload indicates output clipping or short circuit. Power Fail indicates internal PSU issue. Input Fault lights when the active input signal is corrupted or missing.
Is the Redbox RB-ML2 rack-mountable?
Yes, it is designed for 19-inch rack mounting, 1U height. Mounting brackets are included. Ensure adequate ventilation around the unit.
Can I reset the unit to factory defaults?
There is no user-accessible factory reset. The unit operates with fixed parameters. If abnormal behavior persists, contact Sonifex support.
What cables are included in the box?
The package includes 1 x IEC power cord, 1 x rack mounting kit (screws, brackets), and 1 x quick start guide. Audio cables are not supplied.
What is the warranty period?
Sonifex offers a 2-year limited warranty from the date of purchase for manufacturing defects. Extended warranty may be available.
Where can I find the full user manual?
The full manual can be downloaded from notice-facile.com or the Sonifex official website. It contains detailed technical specifications and troubleshooting steps.
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