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4 Corner Fine Tuning:
(When Setting up for Stereo No.25 it is Possible that Placement is Not Corner
Loaded and this Step May be Omitted). The next step is to determine precisely how far from the corner
the sub should be placed to achieve the most efficient output, as well as the lowest frequency extension.
With the REL fully into the corner, and pointing straight out along the diagonal coming out of the corner,
continuing to play the music, slowly pull the REL from the corner on the diagonal, equidistant from both
side and rear wall. At a certain point (sometimes a matter of only a few inches, in rare cases a foot or more)
the REL will audibly go lower, play louder, and, if it truly locks on to the room and is fully pressurizing it,
the air around the REL will seem to be energized, stop right there! This is the correct position from the
corner for the REL.
5 Orientation:
Once the position from the corner has been established, the orientation of the woofer
must be determined by rotating the REL from an imagined centre point at the rear of the REL. As the
REL is moved from one side to the other listen for the greatest level of output and bass linearity. In
effect, the REL should be left in the position where it is playing the loudest and lowest.
6 Crossover and Level Settings:
To determine the crossover point, take the volume of the REL (using the
HI/LO Level control) all the way down, and put the crossover to 30Hz. At this point, bring the REL’s volume
back up slowly to the point where you have achieved a subtle balance, i.e. the point at which you can
just hear the No.25 even with the main speakers playing. First, bring the crossover point up until it is
obviously too high; now gently reduce frequency to the appropriate setting. For all intents and purposes,
this is the correct crossover point. Once this stage has been reached, subtle changes to volume and
crossover may be accomplished to provide the last bit of complete and seamless integration. With that,
set-up is complete.
HINT:
There may be a tendency to set the crossover point too high and the volume of the Sub-Bass System
too low when first learning how to integrate a REL with the system, the fear being one of overwhelming the
main speakers with bass. In making this common error, the resulting set-up will be lacking in bass depth and
dynamics. The proper crossover point and volume setting will increase overall dynamics, allow for extended
bass frequencies, and improve soundstage properties. Note, volume adjustments may need to be made to
offset the effects of crossover changes. In general, when selecting a lower crossover point, more volume may
need to be applied. Higher crossover frequencies will generally necessitate less gain.
