ACM- a1800 Power Amplifier

Description

The aSeries professional power amplifiers offer ACM renowned integrity and can handle exceptionally high power ratings in a compact, light weight 2RU package. The aSeries amps also feature Automatic Clip Limiting to protect connected drivers;Impedance sensing to accommodate varying impedance outputs; tunnel cooled,high efficiency heat sinks; and variable speed DC fans to limit the operating temperature and extend amplifier life. Models in the series include the a1800, a2400 and a3000.

ACM a1800 Front

Specifications

Minimum Guaranteed Power

1 kHz with 0.5% THD

Stereo, 4 ohms (per ch.) 960W
Stereo, 8 ohms (per ch.) 600W
Bridge mono, 8 ohms 1800W

Performance

Sensitivity (volts RMS) for full rated
power at 8 ohms
0.775V, 32dB, 26dB
Frequency Response
(at 1 watt, 20Hz - 25 kHz)
+0dB, -0.5dB
Phase Response
(at 1 watt , 20Hz to 20 kHz)
+10°,-20°
Signal to Noise Ratio below rated power
A-weighted
 
Total Harmonic Distortion (THD)
at 1 full bandwidth power, from 20 Hz to 20 kHz
 
Intermodulation Distortion (IMD) 60 Hz
and 7 kHz at 4:1,
from full rated output to -35 dBt
 
Damping Factor (8 ohm): 20 Hz to 400 Hz  
Low Cut:Linkwitz-Riley
(24dB/Octave)
Off/35Hz/80Hz
Low Pass:Linkwitz-Riley
(24dB/Octave)
Off/80Hz/125Hz
Crosstalk
(below rated power, 20 Hz to 20 kHz)
 
Common Mode Rejection
(CMR)(20 Hz to 1 kHz)
 
DC Output Offset (Shorted input)  
Input Impedance
(nominally balanced, nominally unbalanced)
20 kilohms, 10 kilohms
Voltage Gain
(at maximum level setting)
39dB gain at 0.775volt sensitivity
Load Impedance
(Note: Safe with all types of loads)
Stereo Bridge 4-8 ohms
Mono 8 ohms
AC Line Voltage and Frequency Configurations
Available (±10%)
~220-240 V and 50/60 Hz
AC Line Current
(both amplifiers draw no more than 90 watts at idle)
10A

Construction

Ventilation Flow-through ventilation from front to back
Cooling Proportional speed fan
Dimensions H × W × D: 89mm×483mm×462mm
Net Weight 16kg
Shipping Weight 19kg