RDL ST-MX3 3-Channel Audio Mixer

The ST-MX3 is a line-level mixer module in the STICK-ON Series of products. It provides audio mixing of three line-level inputs with individual input gain adjustments. The line-level output is capable of driving either high or low impedance, balanced or unbalanced loads. The ST-MX3 operates from ground-referenced floating or bipolar dc power. For installations with microphone level inputs, use the ST-UMX3 Universal Audio Mixer.

RDL ST-MX3 Features

• Mix Line-Level Signals
• Three Individually Adjustable Inputs
• Add Additional Line Level Inputs to an Existing Mixer
• Combine Signals of Different Level, Impedance or Balanced /Unbalanced Configuration
• Isolation Between Input Signals
• Low-Noise and Low-Distortion Performance
• RDL® SupplyFlex™ Power Input Configuration

• ST-MX3 3 Channel Audio Mixer - Line input and output1

• Inputs (3)30 kΩ balanced or unbalanced bridging
• Input Level
  • -20 dBu to +18 dBu (for +4 dBu output)
  • -24 dBu to +14 dBu (for 0 dBu output)
• Output400Ω to drive low or high impedance balanced or unbalanced lines
• Output Level+4 dBu nominal, (adjustable; unbalanced output 6 dB below balanced line level)
• THD+N< 0.03% (10 Hz to 20 kHz)
• Frequency Response10 Hz to 20 kHz (± 0.5 dB)
• Noise< -80 dB (all inputs @ 10 dB gain, referenced to +4 dBu)
• Headroom18 dB
• Gain (each input)-14 dB to +24 dB (adjustable)
• CMRR> 50 dB (50 to 120 Hz)
• Ambient Operating Environment0° C to 55° C
• Power RequirementGROUND-REFERENCED or FLOATING, 24 Vdc @ 55 mA
• Package TypeCardboard Box
• Package Dimensions2 x 2 x 4 in.
• Shipping Weight0.17 lbs.
• WEEE weight0.12 lbs.