Musical Fidelity Stereo Amplifier kW 750 User Manual

XX  
kW Phono  
PHONO PREAMPLIFIER  
INSTRUCTIONS FOR USE  
Thank you for purchasing the Musical Fidelity kW Phono preamplifier.  
Used properly and carefully, it should give many years of outstanding musical  
reproduction.  
Aesthetically, the kW Phono is a perfect match for the  
kW 750 Power Amplifier, kW Hybrid Line Level Preamplifier  
and kW SACD Player.  
Together they form one of the finest hi-fi systems available.  
Dust regularly with a soft duster or soft brush, but be careful when using cleaning  
or polishing agents - they may harm the surface finish.  
If you have any questions about your audio system,  
please consult your dealer who is there to help and advise.  
Issue 1 : January 2005  
kW Phono Pre-Amplifier  
Instructions for use  
Page 1 of 7  
 
GENERAL ADVICE  
INSTALLATION PRECAUTIONS and USER INFORMATION  
Your new kW Phono is designed and built to provide trouble-free performance, but as with all  
electronic devices it is necessary to observe a few precautions:  
Heed all warnings shown on the back of the product.  
Only connect the kW Phono to a mains outlet having the same voltage as marked at the back of the  
unit.  
Always ensure that when disconnecting and reconnecting your audio equipment the mains supply  
is switched off.  
Position the mains lead and signal interconnects where they are not likely to be walked on or  
trapped by items placed on them.  
Do not use near water, or place water-filled containers on the pre-amplifier, for example, a flower  
vase or potted plants. If water does spill inside, immediately pull out the mains plug from the  
wall socket and inform your dealer, who should then check the unit before further use.  
Entry of liquid into the preamplifier is dangerous, and may cause electric shock or fire  
hazard.  
Do not place the unit near direct heat sources such as radiators, direct sunlight or other equipment.  
Do not remove any covers or try to gain access to the inside. There are no internal adjustments or  
fuses you can replace yourself. Refer all service work to an authorised Musical Fidelity agent.  
Note: Unauthorised opening of the equipment will invalidate any warranty claim.  
Dust regularly with a soft cloth or soft brush but be careful when using cleaning or polishing agents  
- they may harm the surface finish.  
The electronics in modern hi-fi equipment is complex and may, therefore, be adversely affected or  
damaged by lightning. For protection of your audio system during electrical storms, remove the  
mains plugs and disconnect any aerial lead.  
If after-sales service is required, to help your dealer identify the kW Phono pre-amplifier please  
quote the serial number located on the rear panel of the unit.  
RADIO FREQUENCY INTERFERENCE (R.F.I)  
This product has been tested to ensure that its operation is not adversely affected by normal  
background levels of R.F.I., and that it does not itself generate excessive amounts of interference.  
However, if a problem persists, please contact your Musical Fidelity agent.  
Issue 1 : January 2005  
kW Phono Pre-Amplifier  
Instructions for use  
Page 3 of 7  
 
CONNECTIONS and FACILITIES  
1
2
3
4
5
6
7
8
9
1
FRONT PANEL  
1
Illuminated feet with multi-colour  
indicator LEDs (see page 6)  
POWER mains on/off push switch  
Power on indicator LED  
Moving Magnet / Moving Coil  
input selection button (see page 6)  
5
6
7
8
9
Moving Magnet input indicator LED  
Moving Coil input indicator LED  
RIAA compensation indicator LED  
IEC compensation indicator LED  
2
3
4
RIAA / IEC compensation selection button (see page 6)  
REAR PANEL  
10 Moving Coil input socket - right channel  
11 Moving Magnet input socket - left channel  
12 Moving Coil input socket - left channel  
13 Mains inlet socket - IEC type (10 Amp)  
14 Moving Magnet input socket - right channel  
15 Moving Magnet impedance selection switch  
- right channel (see page 6)  
17 Phono chassis earth terminal  
18 Moving Magnet impedance selection switches  
- left channel (see page 6)  
19 Moving Coil LOADING selection switch  
- left channel (see page 6)  
20 Audio output socket - RIGHT channel  
21 Audio output socket - LEFT channel  
16 Moving Coil LOADING selection switch  
- right channel (see page 6)  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
Issue 1 : January 2005  
kW Phono Pre-Amplifier  
Instructions for use  
Page 4 of 7  
 
CONNECTIONS  
All input, output and power connections  
should be made with the mains power  
switched OFF.  
OUTPUT CONNECTIONS  
The kW Phono has two line level audio  
outputs from RCA sockets on the back panel,  
marked OUTPUTS. Using good quality  
RCA co-axial audio leads, connect the left  
and right outputs to the pre-amplifier input of  
your audio system.  
INPUT CONNECTIONS  
The rear panel of your kW Phono pre-  
amplifier has two pairs of phono input  
sockets, one pair for left and right moving  
magnet (MM) and the other pair for moving  
coil (MC) pickup cartridges.  
(See also page 6, MM / MC switching).  
Two sets of switches located on the rear panel  
are for optimising phono performance as  
follow:  
MC (only):  
Input loading can be changed as required by  
sliding the LOADING switch underneath the  
PHONO MC input socket between the 100  
Ohms and 10 Ohms options. Both positions  
have an input capacitance of 470pF.  
MM (only):  
A four-way switch underneath the PHONO  
MM input socket is for matching the  
characteristics of your phono pickup and lead  
to the kW Phono. When all the switches are  
off (up), the input impedance is 68K Ohms in  
parallel with 47pF capacitance.  
When each individual lever is moved  
downwards, loading of the MM phono input  
circuit changes as shown by adjacent graphics  
on the rear panel (see also specification on  
page 7). If you are not sure which  
combination to select, please consult your  
dealer.  
Some turntables or pickup arms are fitted with  
an extra wire for chassis earthing. This  
should be connected to the chassis earth  
terminal  
on the back panel.  
(Note : this is not a safety earth).  
Issue 1 : January 2005  
kW Phono Pre-Amplifier  
Instructions for use  
Page 5 of 7  
 
OPERATION  
BEFORE SWITCHING ON . . . . .  
RIAA / IEC COMPENSATION  
Plug the accessory IEC mains lead into the  
rear panel socket, then the other end into a  
convenient wall outlet.  
As a further refinement, the phono pickup  
characteristic can be adjusted to suit either  
RIAA or IEC compensation curves.  
Historically, the original RIAA curve defined  
the low audio frequency limit as 20Hz.  
The later IEC standard specifies frequency  
response down to 10Hz to restrict possible  
turntable rumble, or the effect of a warped  
record.  
STARTING  
Press the POWER switch button on the  
preamplifier front panel - the blue LED just  
above the button will light indicating that  
power is applied to the unit.  
Each time the RIAA/IEC button on the front  
panel is pressed, the phono pickup stage is  
switched alternately between the two options.  
LEDs in the support feet will also light red for  
about six seconds, indicating that both left  
and right audio outputs are muted.  
A corresponding blue indicator on the front  
panel lights up to confirm your choice.  
Muting is then disabled, and feet illumination  
then fades over approximately fifteen seconds  
to yellow, showing that your kW Phono is  
now ready for use.  
After a period of about 35 minutes, the LED  
feet colour fades to blue, confirming that the  
pre-amplifier is fully warmed up.  
PHONO MM / MC SWITCHING  
Your kW Phono preamplifier has independent  
circuits for moving magnet (MM) or moving  
coil (MC) phono pickups.  
To obtain the preferred input, press the MM /  
MC selector button on the front panel. A  
corresponding blue indicator on the front  
panel will light to confirm your selection.  
Each press of the button changes over input  
between the two options.  
CAUTION - only operate this function at low  
volume setting.  
Issue 1 : January 2005  
kW Phono Pre-Amplifier  
Instructions for use  
Page 6 of 7  
 
kW Phono  
.SPECIFICATIONS.  
PREAMPLIFIER  
Output :  
Input :  
Voltage RMS, maximum  
Impedance  
Frequency response deviation from RIAA  
> 43 Volts  
32 Ohms  
20Hz to 20kHz ±0.1dB  
Total harmonic distortion + noise,  
20Hz to 20kHz  
< 0.012% (MM, 10 Volts output)  
Input sensitivity for 300mV RMS output  
Input impedance  
2.9mV Moving Magnet, 500µV Moving Coil  
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  
Channel separation  
42dB above rated input at 1kHz (MM)  
> 64dB 20Hz to 20kHz  
Channel balance error  
Signal / noise ref. 1Volt RMS output  
< 0.5dB typical  
> 78dB Moving Magnet (“A”-weighted)  
> 75dB Moving Coil (“A”-weighted)  
Frequency response reference IEC, RIAA  
- see graph . . . .  
20.0  
15.0  
10.0  
PHONO RESPONSE  
5.0  
0.0  
-5.0  
dB  
RIAA  
PHONO  
RIAA/IEC  
-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  
Frequency (Hz)  
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  
Issue 1 : January 2005  
kW Phono Pre-Amplifier  
Instructions for use  
Page 7 of 7  
 

National Instruments Network Card NI DMM User Manual
Nintendo Video Games 58713A User Manual
Omega Computer Drive USB 4750 User Manual
Onkyo Stereo Receiver HT R390 User Manual
Opel Door Audi A3 Avant User Manual
Optiview Security Camera 22XSPD User Manual
Panasonic Network Card 2SC5609G User Manual
Panasonic Security Camera GP KS162CUD User Manual
Paradyne Modem DSL Modem User Manual
Paradyne Network Card SAM2000G 12 User Manual