Manual
Table Of Contents
- Analogue Redbox User Handbook rev 1.92
- Contents
- Figures
- Warranty, Safety & Installation Information
- RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers
- RB-SM1 Single & RB-SM2 Dual Stereo To Mono Converter
- RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced
- RB-LU4 Quad Stereo Balanced To Unbalanced Converter
- RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converte
- RB-SL2 Twin Mono, or Stereo, Limiter
- RB-DA6 6 Way Stereo Distribution Amplifier
- RB-HD1 Stereo Headphone Amplifier
- RB-HD6 6 Way Stereo Headphone Distribution Amplifier
- RB-SD1 Silence Detection Unit
- RB-PMX4 10 Input, 4 Output Analogue Preset Mixer
- RB-LI2 Stereo Line Isolation Unit
- RB-PLI6 6 Way Mono Passive Line Isolation Unit
- RB-SS10 10 Way Stereo Analogue Source Selector/Mixer
- RB-LC3 3 Way Light/Power Controller
- Glossary
- Connectors And Cabling
- Index
Chapter 11 - RB-PMX4 10 Input, 4 Output Analogue Preset Mixer
11-4 Redbox User Handbook
11.4.2. Input Gain Controls
The gain for each input may be individually varied from –8dB to 18dB by adjusting
the pre-set potentiometers, which are accessible through the holes in the front panel.
This is useful for normalising consumer and professional signals to give outputs of –
15dBu and 0dBu respectively.
11.5. Technical Specifications
11.5.1. Audio Specifications
Maximum Input Level: +28dBu
Input Impedance: >20kΩ balanced bridging
Maximum Output Level: +28dBu
Output Impedance: <50Ω
Frequency Response: 20Hz to 20kHz ±0.1dBu (600 Ω load, @ 1kHz)
Input Gain Range: Adjustable 8dBu loss to 18dBu gain.
Common Mode Rejection: >60dBu typically
Off-isolation/Crosstalk: >90dBu @ 1kHz
Noise: -86dBu RMS 22Hz-22kHz, unity gain, ref +8dB
Distortion: <0.01% @ 1kHz, 0dBu to +26dBu
11.5.2. Connections
Inputs: 10 x XLR 3 pin female (Balanced, can be unbalanced)
Outputs: 4 x XLR 3 pin male (Balanced, can be unbalanced)
Mains Input: Filtered IEC, 110V-120V, or 220-240V switchable, fused,
6W maximum
11.5.3. Equipment Type
RB-PMX4: 10 input, 4 output analogue preset mixer
11.5.4. Physical Specifications
Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Dimensions (Boxed): 53cm (W) x 20.5cm (D) x 6cm
Weight: Nett: 1.5kg Gross: 2.2kg