Meyer Sound acheron designer screen channel loudspeaker ユーザーズマニュアル

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Burst Current — The maximum rms current during a 
period of around one second. The Burst Current is used 
as a rating for magnetic breakers. It is also used for cal-
culating the peak voltage drop in long AC cable runs 
according to the following formula:

V pk (drop) = I pk x R (cable total)

The Burst Current can also be used to calculate the AC 
looping capability of Acheron Designer.

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Ultimate Short-Term Peak Current — A rating for fast-
reacting magnetic breakers.

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Inrush Current — The spike of initial current encoun-
tered when powering on.

You can use Table 2 as a guideline for selecting cable 
gauges and circuit breaker ratings for the system’s operat-
ing voltage.

The minimum electrical service amperage required by an 
Acheron Designer loudspeaker system is the sum of the 
Maximum Long-Term Continuous Current for each loud-
speaker. An additional 30 percent above the minimum 
amperage is recommended to prevent peak voltage drops at 
the service entry.

For best performance, the AC cable 

voltage drop should not exceed 10 V, or 

10 percent at 115 V and 5 percent at 230 V. Make 
sure that even with AC voltage drops that the AC 
voltage always remains within the operating win-
dows.

Pay close attention to these important electrical and safety 
guidelines.

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The Acheron Designer requires a grounded outlet. 
Always use a grounded outlet and plug.

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Do not use a ground-lifting adapter or cut the AC cable 
ground pin.

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Do not exceed the current capability of the 20-amp AC 
Input connector for the loudspeaker. When looping loud-
speakers, consider the total current draw for all loud-
speakers on the circuit, including the first loudspeaker.

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Make sure the AC power cable for the loudspeaker has 
the appropriate power plug (on the other end) for the 
area in which you will operate the loudspeaker. In addi-
tion, the AC power cable must be rated for the total cur-
rent draw of all loudspeakers looped from the power 
source.

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Do not operate the unit if its power cable is frayed or bro-
ken.

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Keep all liquids away from the Acheron Designer to avoid 
hazards from electrical shock.

Idle Current

0.23 A rms

0.19 A rms

0.24 A rms

Maximum Long-Term 
Continuous Current

1.58 A rms

0.83 A rms

1.78 A rms

Burst Current

3.1 A rms

1.4 A rms

3.6 A rms

Ultimate Short-Term 
Peak Current

12.0 A peak

8.0 A peak

12.4 A peak

Inrush Current

25 A peak

54 A peak

20 A peak

Earth ground

Chassis ground