Series
AT1800
Number of Channels
2 to 7
EIA 1kHz Output Power at 8 Ohms*
210 watts
EIA 1kHz Output Power at 4 Ohms*
315 watts
FTC Full Bandwidth Output Power at 8 Ohms**
180 watts
FTC Full Bandwidth Output Power at 4 Ohms**
270 watts
Input Sensitivity for Full Rated Power
1.6 Volts
Frequency Response at Rated Output
20Hz to 20kHz ±0.1dB
Phase Response
+5 to -15 degrees from 20Hz to 20kHz at 1 watt
Signal-to-Noise Ratio “A-Weighted”
Greater than 120dB below rated FTC Full Bandwidth Power
Total Harmonic Distortion (THD)
Less than 0.03% at full rated FTC power Less than 0.005% at full EIA power at 1kHz
Intermodulation Distortion (IMD)
Less than 0.03% at full rated FTC power Less than 0.005% at full EIA power at 1kHz
Load Impedance
Safe with all types of loads. Rated for 4 to 16 ohms
Power Bandwidth FTC
+0-3db from 5Hz to 100kHz
Damping Factor
Greater than 400 from 10Hz to 400Hz
Crosstalk
Greater than –100dB from 20Hz to 20kHz
Gain
Voltage gain of 28dB
Slew Rate
50V/microsecond
Input Impedance
Nominally 28k ohms
Remote Trigger Voltage
3.3 to 24 Volts DC at 5 millamperes or greater
DC Output Offset
Less than ±5mV
Power Requirements
120 VAC (other voltages available on export models)
Chassis Dimensions (W x H x D) Inches
17 x 7 x 16.5
Chassis Dimensions (W x H x D) Millimeters
431.8 x 177.8 x 419.1
Net Weight (lbs/kg) Model Dependent
50-93/22.73-42.27
Shipping Weight (lbs/kg) Model Dependent
62-105/28.79-48.75
*EIA 1kHz Power refers to maximum average power in watts at 1kHz with 0.005% THD and noise.
**FTC Full Bandwidth Power refers to maximum average power in watts from 20Hz to 20kHz with 0.03% THD and noise.
The contents of this manual are Copyright © 2003 by Amplifier Technologies, Inc. and may not be duplicated or reproduced by any
means, whether physical, electronic or otherwise without prior written consent from Amplifier Technologies, Inc.
Specifications are those in effect at the time of printing. Amplifier Technologies, Inc.
reserves the right to change specifications or designs at any time without notice.
Page 11
Power Amplifier Specifications
The following applies to all channels being driven simultaneously with 8 ohm loads and an input sensitivity of 28dB gain unless otherwise specified.
