HIGH AND LOW OUT JACKS The Crossover "High" and "Low" out jacks have been provided for bi-amping capabilities. Present at the "Low" jack are all frequencies below the point set by the Frequency Control. Present at the "High" jack are all frequencies above the point set by the crossover or Frequency Control. All patching from these jacks should be done with shielded cable.
Using the SM-400S for Bi-Amping
Using high quality shielded cable, run a patch from the "Low" out jack into the "Left" stereo effects return jack and a patch from the "High" out jack to the "Right" stereo effects jack. Next, make sure the Power Amp Assign switch is in the "Stereo" position. Now, hook up your low frequency speakers to the "Left" speaker output jack and your high frequency speakers to the "Right" speaker output jack. Correct levels or balance between highs and lows can be achieved with the "Balance· control located on the front panel.
The SM-4005 can be used for amplifying just the low or high frequencies! To accomplish this, run a patch from either the high or low crossover out jacks to the "Mono" effects return. Switch the Power Amp Assign switch to "Bridge" and use the banana jack for your speakers.
AURAL ENHANCER The Aural Enhancer was developed to help bring out the fundamental notes of the bass guitar and give a resulting frequency response similar to that used for recording the bass in the studio. This effect becomes more radical as the control is turned to maximum. The result is a more "transparent" sound and is especially noticeable with a slap style technique of playing.