Initially, test the effect of the controls with STORM sited in any convenient position in your listening room. Check that the phase switch is in the Normal position. Turn the two filter controls fully clockwise (maximum bandwidth) and the gain to minimum. Play some music with known bass content, then adjust the gain control for similar sound levels from your main system and your STORM. Now reduce both filter controls to minimum. Notice that the level of the bass has almost disappeared. This is because these very low frequencies are not being boosted by your room Without the ABC you would never be able to hear them properly in your room. Increase the Gain control until this deep bass is heard. Slowly increase the coarse control one step at a time. If one position appears too much, reduce to the lower setting then increase the Fine control a notch at a time until there is a good match between the two systems. It may be necessary, also, to readjust the Gain control.
Do not worry if it is not immediately obvious which setting is correct. It is sufficient at this stage that you perceive that there are differences and that one is too extreme in each direction ,i.e. on maximum settings there is too much bass and at minimum settings there is too little. It will be necessary to test with different types of music with different instruments. At this stage try and get a roughly correct setting.
STORM has a phase reversal switch to allow partial cancellation of the frequencies around the crossover point between the two systems. Listen to the quality of the bass with the phase normal and reversed. Choose the position which subjectively offers the tightest and cleanest bass.
It may take several days before you are completely satisfied that you have found the final best setting. Your acuteness and ability to perceive very subtle differences will improve over these days, possibly because you may not have previously had the opportunity to hear very deep bass in your room. With the ABC you can site STORM almost anywhere you choose. If the bass sounds too prominent, simply reduce one of the filter controls a notch. If there is a "hole", increase one of the filter controls until it is filled in. It is often surprising just how much effect the room is having on the bass response. Sometimes even quite small speakers appear to need very low settings of the ABC. If this is the case, accept it and feel pleased that your stereo imaging extends down so far. It is always better to try and set up for a subtle, rather than an overblown effect if possible. However, personal taste is the
STORM is designed as a true
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