17
Specifications
Power Output:
250 watts per channel
continuous from 20Hz to 20kHz. 1kHz total
harmonic distortion typically 0.5% at 250
watts, below .04% at 1 watt. Approximate
actual power available at “clipping” 270
watts (1kHz). (Note that actual power
output is dependent upon both line
voltage and “condition” i.e.: if power line
has high distortion, maximum power will
be affected adversely, although from a
listening standpoint this is not very critical)
Power Bandwidth:
(-3dB points)
5Hz to 70kHz
Frequency Response:
(-3dB points
at 1 watt) 0.5Hz to 110 kHz
Input Sensitivity:
2.4V RMS Balanced for
rated output. (25.5 dB gain into 8 ohms)
Input Impedance:
200K ohms Balanced
Output Polarity:
Non-inverting.
Balanced input pin 2+ (IEC-268)
Output Taps:
16 ohms, 8 ohms, 4 ohms
Output Regulation:
Approximately
0.9dB 16 ohm load to open circuit
(Damping factor approximately 10)
Overall Negative Feedback:
8.8dB
Slew Rate:
20 volts/microsecond
Rise Time:
1.5 microseconds
Hum & Noise:
Less than 0.2mV RMS –
110dB below rated output (IHF A-weighted,
input shorted, 16 ohm output)
Power Supply Energy Storage:
Approximately 900 joules
Power Requirements:
105-130VAC
60Hz (210-250VAC 50Hz) 770 watts at
rated output, 1000 watts maximum,
380 watts at “idle,” 1 watt off
Tubes required:
3 Matched pair KT150
(Power output V1-6); 1 Matched
pair KT150 (Driver V7-8); 2 6H30
(Gain stage V9 and Regulator Driver
V11); 1 6550C (Regulator V10)
Dimensions:
width
19” (48.3 cm)
height
8.75” (22.2 cm)
depth
19.5” (49.5 cm)
Handles extend 1.5” (3.8 cm) forward
Weight:
47 lbs. (21.3 kg) Net
63 lbs. (28.6 kg) Shipping
Summary of Contents for Reference 250 SE
Page 1: ...Reference 250 SE H I G H D E F I N I T I O N...
Page 2: ......
