Mono and stereo signal

Play mono or stereo?

• Effects sound gloriously in stereo. However, when it comes to FOH sound, stereo separation may not translate very well to a live audience, because people seldom are in the right spot to hear both sides equally well. Discussion example.

Mono/Stereo mode can vary per output

• The Axe-Fx, AX8 and FX8 provide different mono/stereo modes in the I/O menu for each output. It also depends on the preset layout and block settings.
• Sum L+R and Copy L>R are mono modes.

Effect blocks and mono/stereo output

• Flanger, Chorus and Phaser are set to mono by default. Use the parameter LFO Phase to switch the effect to stereo.
• Everything before an Amp block or Drive block will be summed to mono. To keep a stereo signal before the Amp block stereo, use two Amp blocks (Axe-Fx II only), use Input Select and Balance to make each block handle one side of the signal.
• When placing a Cab block at the end of the grid, the output signal will be summed to mono, unless the Cab is set to Stereo mode or when using two mono Cab blocks in parallel. When a Cab block is set to Stereo mode but followed by a mono effect such as Drive, the resulting signal is also summed to mono.

Beware of phase cancellation when summing output to mono

• Summing a stereo signal to mono may cause phase cancellation.