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APPENDIX A: ACHERON DESIGNER SPECIFICATIONS
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Output Power 700 W total (550 W low channel, 250 W high channel)
Note: Amplifier wattage rating based on the maximum unclipped burst sine-wave RMS volt-
age the amplifier will produce into the nominal load impedance: low-frequency channel, 33 V
rms into 2 ; high-frequency channel, 33 V rms into 8 .
Total Output 1400 W peak
Note: Peak power output based on the maximum unclipped peak voltage the amplifier will
produce into the nominal load impedance: low-frequency channel, 46 V peak into 2 ; high-
frequency channel, 46 V peak into 8 .
THD, IM TIM <.02%
Load Capacity 2 low channel, 8 high channel
Cooling Convection, with recessed heat sink
AC POWER
Connectors PowerCon with loop output
Voltage Selection Automatic, continuous range from 90–265 V AC
Safety Agency Rated Operating Volt-
age
100–240 V AC, 50/60 Hz
Turn On/Turn Off Points 90 V AC on, no turn-off, only fuse-protect above 265 V AC
Current Draw
Idle Current 0.23 A rms (115 V AC); 0.19 A rms (230 V AC); 0.24 A rms (100 V AC)
Maximum Long-Term Continuous
Current
1.58 A rms (115 V AC); 0.83 A rms (230 V AC); 1.78 A rms (100 V AC)
Burst Current 3.1 A peak (115 V AC); 1.4 A peak (230 V AC); 3.6 A peak (100 V AC)
Note: AC power cabling must be of sufficient gauge so that under burst current rms condi-
tions, cable transmission losses do not drop below the loudspeaker’s specified operating volt-
age range.
Ultimate Short-Term Peak Current 12.0 A peak (115 V AC); 8.0 A peak (230 V AC); 12.4 A peak (100 V AC)
Inrush Current 25 A peak (115 V AC); 54 A peak (230 V AC); 20 A peak (100 V AC)
PHYSICAL
Enclosure Premium birch plywood
Finish Low gloss, black textured
Protective Grille (Optional) Attachment points on cabinet front corners for optional grille frame with black cloth
Note: Weight for grille frame is 2.0 lbs ((0.9 kg).
Rigging (Optional) Two threaded M6 attachment points on cabinet bottom for optional MYA-DES cradle-style
yoke
Note: Weight for MYA-DES is 28.5 lbs (12.9 kg).
Dimensions 19.00" w x 25.38" h x 14.58" d (483 mm x 645 mm x 370 mm) without optional grille frame
Weight Weight 76.0 lbs (34.5 kg) without optional grille frame
ENVIRONMENTAL
Operating Temperature 0° C to +45° C
Non Operating Temperature <–40° C or >+75° C
Humidity to 95% at 35° C
Operating Altitude to 4600 m (15,000 ft)
Non Operating Altitude to 95% at 35° C
Shock 30 g 11 msec half-sine on each of 6 sides
Vibration 10 Hz – 55 Hz (0.010 m peak-to-peak excursion)