MCM Electronics

Unbalanced 4X1 Audio Switcher By Radio Design Labs (ST-SX4) MCM Part #555-18914

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MSRP: $132.63
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4X1 Unbalanced Audio Switcher

The ST-SX4 accepts up to four unbalanced audio sources. Any of these sources may be selected to feed the output, or all sources may be switched off. The output from the ST-SX4 is unbalanced.

Specifications Top

Control of the module is accomplished through a single input terminal. Connection of a specified resistance between the CTRL input and ground causes the desired input to be switched on. The necessary external resistors are supplied with the ST-SX4. The ST-SX4 may be remote controlled using the RC4-ST remote control.

  • Select 1 of 4 Unbalanced Audio Sources
  • Audio Selection from Remote Location
  • Remote Switching from Single Control Pair
  • All Solid-State Audio Switching
  • Slave Capability for Stereo Switching

Input and Output Level: -10 dBV
Gain: Unity
Headroom: 23 dB
THD+N: < 0.1% Typ. 0.05%
Frequency Response: 15 Hz to 40 kHz (+/- 0.5 dB)
Input Impedance: 100 kO, unbalanced
Output Impedance: < 50 O, unbalanced
Crosstalk: Below noise floor
Off-Channel Attenuation:
. > 85 dB @ 1 kHz
. > 80 dB @ 10 kHz
. > 75 dB @ 20 kHz
Residual Noise: < -70 dB (referred to -10 dBV)
Control Input Resistance: 10 kO (pullup to +15 Vdc)
Control Input: Single terminal to be connected to ground terminal to select desired channel.
Input Selected Resistance Value
None 0 O (short to GND)
1 2.7 kO
2 6.8 kO
3 22 kO
4 None
Power Requirement: GROUND-REFERENCED, 24 Vdc @ 40 mA
Ambient Operating Environment: 0° C to 55° C

Part Numbers
MCM Part #:555-18914
Radio Design Labs Part #:ST-SX4
Package Specifications & Dimensions
Weight:0.1 lbs.
RoHS Comp:Yes
Warranty:1095 days
Need to Return?
Length:4 in.
Width:2 in.
Height:2 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

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