Vortex Media VTX 1000 - Manual (Page 28)

Once the external devices have been wired to the Vortex device, the Input and/or Output gain of the Vortex
device needs to be set to match the nominal level of the external devices. Here is a table that references
the types of connectors to the proper input / output level:
Connector Type Input Gain Output Gain
RCA +10 dB -10 dB
1/8 inch +10 dB -10 dB
XLR 0 dB 0 dB
Phoenix / Terminal Block 0 dB 0 dB
The issue of nominal levels is important because it will affect the gain structure of the Vortex device.
devices that have RCA and 1/8 inch style connectors are normally designed to operate with a nominal level
of .3 Vrms. The Vortex device is designed to operate with a nominal input and output level of .775 Vrms.
This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that
value to 10 dB. Therefore, the inputs of the Vortex that receive consumer level outputs need to be set to
+10 dB in order to achieve a unity gain. The outputs of the Vortex will be about 10 dB too high for the
consumer level equipment and, in turn, need to be set to -10 dB to avoid clipping and to maintain enough
headroom in the consumer level devices.
The Input gain of a Vortex device that is connected to a SoundStation VTX 1000 should be set to +10 dB.
The Output gain of a Vortex device that is connected to a SoundStation VTX 1000 should be set to -10 dB.
10.) E
NABLE
VTX M
ODE IN THE
V
ORTEX
D
EVICE
You must perform this step; otherwise, you will not be able to operate the SoundStation
VTX 1000 properly.
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