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ATON A275 Installation Manual Page 12

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ATON
© ATON 2010 • All rights reserved. Page 5
A275 INSTALLATION MANUAL
Applications
4/6/8 Ohm Speakers with Volume Controls
• Audio Output to Line Inputs 1 & 2
Figure 2-3: 4/6/8 Ohm Speakers w/ Volume Controls
Using A275 with Impedance Match Volume Controls and Maximum Speaker Wattage
Volume Control
Impedance Match Setting
8 Ohm
Speaker Pairs
Max Wattage
Available Per
Speaker
6 Ohm
Speaker Pairs
Max Wattage
Available Per
Speaker
4 Ohm
Speaker Pairs
Max Wattage
Available Per Speaker
1X 4 18.0 3 24.0 2 36.0
2X 6 12.0 4 18.0 3 24.0
4X 8 6.0 6 9.0 4 12.0
8X 16 1.0 12 1.5
System Design Considerations
Adding multiple speakers to a power amplifier reduces the amount of power sent to each speaker as the total available wattage is
divided among the connected speakers. Beyond customer volume preferences, several factors affect overall amplifier output including
input signal gain, impedance, AC voltage, wire run length and gauge, insertion losses with volume controls, room size, etc. This chart
assumes simple math and does not represent actual dB, SPL calculations, etc. It is provided as a guideline only to demonstrate theory
& provide some basic design guidance. You can never overpower a system because you have dynamic headroom, or spare power as
needed. If you underpower / underamplify a system, the amplifier tends to be pushed past its safety zone which eventually leads to
clipping and system failure.
Indoor applications for background audio need only be a few watts, typically 1 to 10. For primary listening areas, you should plan on 5
to 20 watts or more depending upon application. Outdoor applications require a greater amount of power since there is little reflectivity
of sound and listening area is larger, so plan on 40 watts or more!
NOT RECOMMENDED
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