Musical Fidelity kW 750 - Manual (Page 7)

Issue 1 : January 2005 kW Phono Pre-Amplifier Instructions for use Page 7 of 7
kW Phono
PREAMPLIFIER
. SPECIFICATIONS .
Output
:
Voltage RMS, maximum > 43 Volts
Impedance 32 Ohms
Frequency response deviation from RIAA 20Hz to 20kHz ±0.1dB
Input
:
Total harmonic distortion + noise, < 0.012% (MM, 10 Volts output)
20Hz to 20kHz
Input sensitivity for 300mV RMS output 2.9mV Moving Magnet, 500µV Moving Coil
Input impedance MC : Switched, 10 Ohms or 100 Ohms in parallel with 470pF
MM : All switches up : 68k Ohms in parallel with 47pF,
Switch no. 1 down : 47k Ohms + 47pF,
Switch no. 2 down : extra 50pF added,
Switch no. 3 down : extra 100pF added,
Switch no. 4 down : extra 200pF added
Overload margin 42dB above rated input at 1kHz (MM)
Channel separation > 64dB 20Hz to 20kHz
Channel balance error < 0.5dB typical
Signal / noise ref. 1Volt RMS output > 78dB Moving Magnet (“A”-weighted)
> 75dB Moving Coil (“A”-weighted)
Frequency response reference IEC, RIAA
- see graph . . . .
Input sockets : 2 phono Moving Magnet via RCA connector
2 phono Moving Coil via RCA connector
Output sockets : 2 RCA connectors for line level output
Power requirements : 115 / 230 Volts or 100 V AC 50 / 60Hz (factory preset)
25 watts maximum
Dimensions : 483mm, 19 inches wide
167mm, 6.6 inches high (including feet)
456mm, 18 inches deep (including buttons and rear terminals)
Weights
: 18.15Kg, 40 lbs unit only, unboxed
23Kg, 51 lbs in shipping carton
Standard accessories : IEC mains lead - 10 Amp type
Musical Fidelity reserves the right to make improvements which
may result in specification or feature changes without notice
-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 10000 16000
RIAA
PHONO
RIAA/IEC
PHONO RESPONSE
Frequency (Hz)
dB