Product Description
RDL ST-SX4 Unbalanced Audio Switcher - 4x1
Overview
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. 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 D SERIES-RC4ST remote control.
Power Supply Not Included
Recommended Power Supply:
- PS-24AS (USA)
- PS-24AX (International)
Features
- 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
Specifications
AUDIO
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 kΩ, unbalanced
Output Impedance: < 50 Ω, unbalanced
Crosstalk: Below noise floor
Off-Channel Attenuation:
> 85 dB @ 1 kHz
> 80 dB @ 10 kHz
> 75 dB @ 20 kHz
> 80 dB @ 10 kHz
> 75 dB @ 20 kHz
Residual Noise: < -70 dB (referred to -10 dBV)
CONTROL
Control Input Resistance: 10 kΩ (pullup to +15 Vdc)
Control Input: Single terminal to be connected to ground terminal to select desired channel.
Input Selected Resistance Value
None: 0 Ω (short to GND)
1: 2.7 kΩ
2: 6.8 kΩ
3: 22 kΩ
4: None
Ambient Operating Environment: 0° C to 55° C
Power Requirement: GROUND-REFERENCED, 24 Vdc @ 45 mA