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

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During normal operation, the Acheron Designer’s On/Status 
LED is green. If the loudspeaker’s internal temperature 
reaches 75° C (167° F), the LED turns solid yellow and the 
loudspeaker’s gain is reduced by 3 dB. Though the 
Acheron Designer will continue to operate normally with the 
lower gain, when the On/Status LED is yellow, this is an indi-
cation that the loudspeaker is reaching its maximum heat 
dissipation and a reduction in SPL is recommended. When 
the loudspeaker’s internal temperature cools to 60° C 
(140° F), the amplifier returns to normal operation.

If the loudspeaker’s internal tem-

perature reaches 125° C (257° F), gain is 

reduced by 6 dB to avoid damage to the loud-
speaker.

When the Acheron Designer is connected 

to an RMS network, the RMS software provides 

additional feedback on the loudspeaker’s operating 
temperature. For more information, see Chapter 6, 
“RMS Remote Monitoring System.”

The Acheron Designer’s amplifier relies solely on natural 
convection for cooling from air flowing over its heat sink. 
The rear-mounted, recessed heat sink yields efficient cool-
ing and allows the unit to be placed flat against walls, when 
necessary. The amplifier and heat sink keep temperatures 
low, even when the unit is used at high ambient tempera-
tures, and when driven continuously at high output levels.

The Acheron Designer’s heat sink 

can reach temperatures of up to 85° C (185° F) 

during extreme operation. Use extreme caution when 
approaching the rear of the loudspeaker.

When installing the Acheron Designer flush against walls, or 
when mounting them in soffits or baffle walls, make sure to 
allow plenty of ventilation above the loudspeaker.

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When installing the Acheron Designer in a soffit with the 
loudspeaker flush against the back of the soffit (see 
Figure 2), allow at least 6 inches above the loudspeaker 
for ventilation.