DaytonAudio MA1260 Manuale d'uso - Pagina 5

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Set-Up Addendum Using In-Wall Volume Controls

Channel Level Settings

Care must be taken when adjusting the level or volume control on each of the 12

channels of the MA1260, especially when using stereo in-wall volume controls in the

various zones. In zones where in-wall volume controls are not used, simply set the level

controls on the two channels of that zone for an average listening level. The actual

setting needed can vary based not only upon the volume desired in that zone, but by

the input level of the audio source. Even from the same audio source, i.e., an .mp3

player or CD/DVD player, levels can vary significantly from song to song. This is

especially true when program material is from different artists or albums.

When in-wall controls are used, care must be taken not to set the channel level controls

too high. This can cause "clipping" or distortion in the audio output from the MA1260's

output amplifiers. The result is excessive heating and a reduced service life of the

amplifier's outputs. The audibility of this distortion can be greatly reduced by the

inductive nature of most in-wall volume controls.

Start with the in-wall volume control set to full volume. With an average-strength audio

input (a CD or DVD player is best) set the channel level controls to an average listening

level for that zone, or even slightly higher. Then use the in-wall control to reduce the

volume level of the audio in that zone. Most in-wall controls can reduce the volume to

near silence. Bear in mind that the amplifier channel is still operating and dissipating

power into the volume control even when the volume control is turned all the way down

WARNING

Setting the channel level controls to full volume, and then using an in-wall volume

control to limit the volume to a lower level is an improper setup. A full-volume

adjustment of a channel's level control will cause extreme clipping of the audio signal by

the channel's amplifier. This will cause rapid heating of the channel's outputs and may

cause it to degrade rapidly, or fail completely in a short period of time. In-wall volume

controls can mask this distortion significantly at the speakers, but do nothing to reduce

the risk to the amplifier. If you have questions about a proper setup of your MA1260

amplifier. With a proper setup, the MA1260 can provide years of trouble-free operation.

Proper setup of the MA1260 amplifier is the sole responsibility of the end-user. The

damage and/or failure of an MA1260 due to an improper set-up is specific, unique, and

is not repairable. It will not be considered a failure covered by the amplifier's

warranty.