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 dist 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
