Why in some cases do I get a “phasey” or comb filtered sound when I engage the FX Loop?
In the FX Loop, the signal has to go through a stage of digital to analog and analog to digital conversion to connect to an external device. All digital to analog and analog to digital converters have some degree latency (usually less than a millisecond) so the return (“wet”) signal is slightly delayed relative to the send (“dry”) signal. When the signals are mixed, some comb-filtering can occur which causes that “phasey” sound. Setting the FX Loop “MIX” control to 100% will prevent this from happening. If the device you have connected to the FX Loop has a wet/dry mix control, it’s recommended to use it to control the balance between the dry and wet signal. When using delays or reverbs in the FX Loop, the using the Eleven Rack FX Loop “MIX” control with this configuration is totally suitable for adjusting the balance between wet and dry signals. Just make sure you set the “Mix” control on the delay or reverb device to 100% or its maximum setting. For other FX (non-delay based), is it g
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