RDL®

ST-UMX3

3x1 Universal Audio Mixer - 3 microphone or line inputs x 1 microphone or line output

SKU: ST-UMX3
  • Audio Mixing with Up To Three Inputs
  • Switch-Selectable Mic or Line Inputs
  • Switch-Selectable Mic or Line Output
  • Add Additional Microphone or Line Level Inputs to an Existing Mixer
  • Combine Signals of Different Level, Impedance, or Balanced /Unbalanced Configuration
Recommended Power Supply ( Not Included )
PS-24AS (USA)PS-24AX (International)
Category:

Description

The ST-UMX3 is a three-channel audio mixer for combining mic-level or line-level signals to a single output. A MIC/LINE switch is provided for each input. A separate MIC/ LINE switch selects the output level. Each input features a separate preamplifier circuit, which isolates it from the other inputs. An audio taper single turn gain adjustment is provided for each of the three input preamps. Signals from the three preamps are actively summed and fed to the output amplifier which includes an RDL® dual-LED VU meter.

Each input level is set while observing the LED output level meter. The dual-LED output meter follows standard VU ballistics. The intensity of the green LED progresses from minimum at -11 dBu to full intensity at +4 dBu.

The flexibility of switching each input and the output between MIC or LINE allows installers to address a wide variety of mixing solutions with only one product type.

Specifications

Inputs (3):Mic: 600 Ω; Line: 50 kΩ, balanced
NOTE: MIC INPUTS ON ST-UMX3 ARE NOT PROTECTED AGAINST PHANTOM VOLTAGE. USE THE ST-MPA24 or ST-MPA48 MIC PHANTOM ADAPTER.
Maximum Input Signal:Mic: -18 dBu; Line: +25 dBu
Gain (each input):Mic: Adjustable from OFF to 60 dB
Line: Adjustable from OFF to 21 dB
Output:150 Ω balanced; 75 Ω unbalanced
Output Signal:Mic: 50 dB below line level
Line: +4 dBu nominal
THD+N:< 0.006%
IMD:Mic (@ 50 dB gain): < 0.04%
Line: < 0.008%
Freq. Response:Mic: 50 Hz to 100 kHz (± 1 dB)
Line: 10 Hz to 100 kHz (± 0.05 dB)
Noise (each input):Mic: < -70 dB (50 dB gain)
Line: < -82 dB (unity gain)
Headroom:18 dB
CMRR:Mic: > 60 dB
Line: > 50 dB, (50 to 120 Hz)
Ambient Operating Environment:0° C to 55° C
Power Requirement:GROUND-REFERENCED, 24 Vdc @ 55 mA
Package Type:Cardboard Box
WEEE weight:0.12 lbs.
Shipping Weight:0.175 lbs.
Tariff code:8543.70.9860
Package Dimensions:2 x 2 x 4 in.

Related Products

Mixing
  • EZ-MX4L

    Stereo Line-Level Audio Mixer - 4X1

  • EZ-MX4ML

    Mic and Stereo Line Audio Mixer - 4X1

  • FP-MX3R

    Remote Controlled Line-Level Mixer

  • FP-MX4

    4 Channel Audio Mixer - Microphone or line input and output

  • RU-MX4

    Professional 4 Channel Microphone/Line Mixer with Phantom Power - Microphone and line output

  • RU-MX4L

    Professional 4 Channel Line Level Mixer - Microphone and line Output

  • RU-MX4LT

    Professional 4 Channel Line Level Mixer with Transformer - Microphone and line output

  • 4 Channel Mixer

    RU-MX4T

    Professional 4 Channel Microphone/Line Mixer with Phantom Power & Transformer - Microphone and line output

  • Five Channel Mixer

    RU-MX5ML

    5 Channel Mic/Line Audio Mixer with Phantom Power

  • Two Channel Audio Mixer

    ST-MX2

    2 Channel Audio Mixer - Microphone or line input and output

  • ST-MX3

    3 Channel Audio Mixer - Line input and output

  • TX-MX2R

    Audio Mixer / Distribution Amplifier

Format-A® Mixers
  • FP-TPX3A

    Format-A Twisted Pair Remote Controlled Mixer

Microphone Products
  • ST-MPA48

    Dual Microphone Phantom Adapter - 48 V

Related Products

STICK-ON® Mounting Accessories
  • SMK-12

    STICK-ON Mounting Plate

  • SR-10

    STICK-ON Series 19" Mounting Rack - 10 modules

  • SR-12A

    STICK-ON Series 19" Mounting Rack - 12 modules

  • ST-PBR4

    STICK-ON Mounting Bracket

  • ST-RRB1

    Rear rack rail mounting kit for any STICK-ON module

  • STR-19A

    STICK-ON Series 19" Racking System - 12 modules

  • STR-19B

    STICK-ON Series 19" Racking System - 10 modules

  • STR-H6A

    10.4" Rack Mount for 6 STICK-ON Series Products

General Mounting Accessories
  • DMK-5

    Detachable Mounting Kit for RDL Modules

  • MB-1

    Mounting Kit - RU, ST and TX Series

  • SR-4

    STICK-ON Series Mounting Rack - 7 modules

DIN Rail Mounting Accessories
  • DRA-35S

    STICK-ON DIN Rail Adapter - 1 module

  • DRA-35S6

    STICK-ON DIN Rail Adapter - 6 modules

General Wiring Accessories
  • DTB

    STICK-ON® Series Detachable Terminal Block

Dimensions

ST-UMX3

Downloads

DocumentsFormat
DatasheetPDF
CAD FilesUnitsFormat
Engineering Functional BlockAmericanDXF
Panel Diagram - EndAmericanDXF
Panel Diagram - FrontAmericanDXF
Panel Diagram - EndMetricDXF
Panel Diagram - FrontMetricDXF
High Res ImagesFormat
st-umx3.zipTIF
Declaration of Conformity
Download

Diagrams