Niles-audio OS5.5 User Manual download pdf (Page 19)

NILES AUDIO CORPORATION – 1-800-BUY-HIFI – 305-238-4373

1. Stand halfway between the loudspeakers.

2. Play some music with the amplifier or receiver 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.”

OPERATION

LISTENING AT HIGHER VOLUMES

Outdoors there are no walls to reﬂect and contain the sound. It requires more power to achieve a

reasonable volume of sound outside than it does indoors. You also frequently ﬁnd yourself very far

from the loudspeakers. It is possible to turn the volume so high that the ampliﬁer runs out of power.

This creates “clipping” distortion.

Clipping distortion makes treble sound very harsh and unmusical. When you hear harsh sounding

treble from any good loudspeaker indoors or outdoors, turn the volume down immediately! Those

harsh sounds are masking some much more powerful ultra-high-frequency sound spikes which

will quickly damage any ﬁne loudspeaker.

CLEANING

Clean the OS loudspeakers with a dampened soft cloth or paper towel. If the loudspeaker is

mounted high up on a wall or ceiling, use a broom to gently brush it off. Hosing off the loudspeaker

is not recommended, as the tweeter is a precise mechanism which might be damaged by a

high-pressure stream of water.

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Niles-audio OS5.5 User Manual Page 19