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Of course, there are some wires that appear completely identical. So be careful, or
you might make a connection mistake. If you do, one loudspeaker will be playing
“out-of-phase” with the other loudspeaker. A pair of out-of-phase loudspeakers
works against each other, and the sound of the two playing together will be lacking
in bass and sound “phasey.” If you suspect the sound is not right, and you cannot
see any markings on the wire, try this simple test:
1. Stand halfway between the loudspeakers.
2. Play some music with the amplifier or radio set to Mono.
3. Listen to the richness of the bass and the loudness of the sound.
4. Turn off the amplifier and reverse the connections on one amplifier channel only.
5. Repeat the listening test with the same volume control setting. When the sound
has a richer bass and is slightly louder, the loudspeakers are working together or
“in-phase.”
ACOUSTIC FINE TUNING
Each StageFront 70 Series In-Wall LCR loudspeaker features TREBLE and
MIDRANGE variable controls located on the front for acoustic fi ne-tuning after
installation, as shown in Figure 7. Adjust these controls as follows:
■ If you desire more dialog presence, increase the amount of midrange frequencies
produced by turning the MIDRANGE control clockwise.
■ If a StageFront LCR model is placed in a room with highly reflective surfaces like
glass or tile, you may wish to decrease the amount of high frequencies produced by
turning the TREBLE control counter-clockwise.
INSTALLING THE GRILLE
Starting at one corner, carefully align the magnetic grille into the frame and slowly
allow the magnets to attach. Work around the grille edge, ensuring that the grille
stays within the frame. When properly installed, the edges of the grille will be fl ush
in appearance with the frame.
Figure 7. The IW2670LCR or IW2770LCR
TREBLE and MIDRANGE controls.