User guide

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Specifications continued)
Measurement Evolution 403e Amplifier Evolution 400e Monaural Amplifier
FREQUENCY RESPONSE 20 Hz to 20 kHz +0, –0.18 dB
<0.5 Hz to 120 kHz +0, –3 dB
20 Hz to 20 kHz +0, –0.18 dB
<0.5 Hz to 125 kHz +0, –3 dB
SIGNAL-TO-NOISE RATIO
Wideband, unweighted, referred to full
power output
“A” weighted
>106 dB
>116 dB
>108 dB
>118 dB
GAIN 25.4 dB 25.4 dB
TOTAL HARMONIC DISTORTION <0.02% at 1 kHz, at 400 W, 8 Ohms
<0.15% at 20 kHz, at 400 W, 8 Ohms
<0.02% at 1 kHz, at 400 W, 8 Ohms
<0.15% at 20 kHz, at 400 W, 8 Ohms
INPUT IMPEDANCE
Single-ended
Balanced
CAST
100 kOhms
200 kOhms
70 Ohms
100 kOhms
200 kOhms
70 Ohms
INPUT SENSITIVITY
Single-ended or balanced
CAST
3.04 V rms
3.04 mA rms
3.04 V rms
3.04 mA rms
OUTPUT POWER 400 W rms at 8 Ohms
800 W rms at 4 Ohms
1600 W rms at 2 Ohms
400 W rms at 8 Ohms
800 W rms at 4 Ohms
1600 W rms at 2 Ohms
OUTPUT VOLTAGE 160 V peak-to-peak
57 V rms
160 V peak-to-peak
57 V rms
OUTPUT CURRENT 37 A peak 37 A peak
SLEW RATE 100 V/µs 100 V/µs
OUTPUT IMPEDANCE <0.055 Ohms at 20 Hz
<0.064 Ohms, 20 Hz to 20 kHz
<0.055 Ohms at 20 Hz
<0.064 Ohms, 20 Hz to 20 kHz
DAMPING FACTOR
Referred to 8 Ohms
>145 at 20 Hz
>125, 20 Hz to 20 kHz
>145 at 20 Hz
>125, 20 Hz to 20 kHz
POWER CONSUMPTION
Stand-by
High Current Stand-by
Idle
Maximum
2 W
370 W
570 W
5000 W
2 W
150 W
210 W
2500 W
HEA
T OUTPUT
Stand-by
High Current Stand-by
Idle
Maximum
7 BTU/hr
1270 BTU/hr.
1950 BTU/hr.
7700 BTU/hr
.
7 BTU/hr.
510 BTU/hr.
720 BTU/hr.
3800 BTU/hr
.
INPUTS 3 single-ended via RCA connector
3 balanced via XLR connector
3 CAST via 4-pin bayonet connector
1 single-ended via RCA connector
1 balanced via XLR connector
1 CAST via 4-pin bayonet connector
OUTPUTS 3 pairs Krell binding posts 3 pairs Krell binding posts
DIMENSIONS 17.3 in. W x 9.8 in. H x 26.1 in. D
438 mm W x 248 mm H x 662 mm D
14.5 in. W x 9.8 in. H x 20.65 in. D
368 mm W x 248 mm H x 525 mm D
WEIGHT
Shipping
Unit only
190 lb., 86 kg
175 lb., 79.2 kg
120 lb., 54.3 kg
102 lb., 46.2 kg
All operational features, functions, specifications, and policies are subject to change without notification.
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