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KW250S
AMPLIFIER SPECIFICATIONS
Issue 3: 12th July 2006
Page 24
of
25
Output: Power 250 Watts per channel into 8 Ohms (24dBW),
400 Watts per channel into 4 Ohms
Voltage, RMS 45 Volts 20Hz to 20 kHz
Voltage, Peak-to-peak 127.3 Volts
Current peak-to-peak 75 Amps
Damping factor 140
Output devices per channel 4
Pre-out impedance 50 Ohms
Line inputs:
THD + noise, 20Hz to 20 kHz < 0.01%
Signal / noise ratio > 100dB ‘A’-weighted
Input sensitivity for 250 Watts 330mV
Input impedance 220k Ohms
Overload margin 26dB
Channel separation > 70dB typical
Frequency response 20Hz to 20 kHz, +0, -0.2dB
Phono input: RIAA/IEC combined response (see graph)
-20.0
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
20.0 31.5 50.0 80.0 125 200 315 500 1000 1600 2500 4000 6300 1000016000
RIAA
PHONO
RIAA/IEC
PHONO RESPONSE
Frequency (Hz)
dB
Signal / noise ratio > 96dB ‘A’-weighted
Input sensitivity 2.5mV (moving magnet)
Input impedance 47k Ohms
Overload margin 24dB
Connections:
Aerial input 1 F-type (female) with securing thread, DAB/FM
Digital inputs 1 optical (TOSLINK)
2 S/PDIF (RCA connector),
Digital outputs 1 optical (Toslink), 44.1/48 kHz
1 S/PDIF (RCA connector), 48 kHz
Line level inputs: 2 pairs line level RCA connectors,
1 front panel 3.5mm jack socket (sharing AUX2 input)
1 pair phono (MM/MC) RCA connectors,
Line level outputs: 1 pair RCA [preamp] controlled by the volume,
1 pair RCA [tape record] fixed line level output.
Speaker outputs: 1 pair 4mm banana plug/binding posts per channel.
Power requirement: 100 / 115 / 230Volts AC 50 / 60Hz (factory pre-set),
700 Watts maximum into 8 Ohms, 80 Watts idle
Weight: 29.5 kg, 65 lbs unit only, unboxed
37.0 kg, 81.5 lbs in shipping carton
Dimensions: 485 mm, 19.1 inches wide
170 mm, 6.7 inches high including feet
470 mm, 18. 5 inches deep including terminals
Standard accessories: Telescopic tri-band aerial with F-plug connector,
IEC type mains lead (16-Amp type),
Remote control (A5, universal type),
2 batteries size LR03 or AAA, manganese alkaline type
Musical Fidelity reserves the right to make improvements which may
result in specification or feature changes without notice.