Solupeak X31 3 IN – 1 OUT XLR switch
I needed again a 3 IN – 1 OUT XLR selector switch for my small lab so after some googling I have decided to order this:
The little box has arrived today. It is small, simply made on an open PCB, with the rotary switch and XLR connectors soldered directly into the board. Taking into account very low price, I do not care.
We can see 3 stereo inputs IN1 - IN3 and 1 stereo output OUT
Some measurements
Let's do some measurements. First, THD and THD+N without (direct cabling) and with the switch. I use my Topping DX5 as a sound source and E1DA Cosmos ADC for measurements.
Direct path without the X31 switch
The signal path with Solupeak X31 inserted. There is no difference.
I have also made a more complex RightMark test, again with and without the switch. Below the RMAA results.
Frequency response
Noise level
Dynamic range
THD + Noise (at -3dBFS)
Intermodulation distortion
Stereo crosstalk
Conclusion
We can see that the switch is transparent, as expected. The only slight change is in the stereo crosstalk above 10kHz, still below -110dB, thus inaudible.
I needed again a 3 IN – 1 OUT XLR selector switch for my small lab so after some googling I have decided to order this:
The little box has arrived today. It is small, simply made on an open PCB, with the rotary switch and XLR connectors soldered directly into the board. Taking into account very low price, I do not care.
We can see 3 stereo inputs IN1 - IN3 and 1 stereo output OUT
Some measurements
Let's do some measurements. First, THD and THD+N without (direct cabling) and with the switch. I use my Topping DX5 as a sound source and E1DA Cosmos ADC for measurements.
Direct path without the X31 switch
The signal path with Solupeak X31 inserted. There is no difference.
I have also made a more complex RightMark test, again with and without the switch. Below the RMAA results.
Frequency response
Noise level
Dynamic range
THD + Noise (at -3dBFS)
Intermodulation distortion
Stereo crosstalk
Conclusion
We can see that the switch is transparent, as expected. The only slight change is in the stereo crosstalk above 10kHz, still below -110dB, thus inaudible.
