Musical Fidelity HT600 User manual

HT600 5 Channel power amplifier Instructions for Use. Page 1
of 7
INSTRUCTIONS FOR USE
Thank you for purchasing the Musical Fidelity
HT600 5 channel power amplifier.
The HT600 is a 5 channel power amplifier specifically
designed for home theatre applications.
It has been developed to operate with all
Musical Fidelity preamplifiers but especially
the HTP home theatre processor.
Used properly and carefully, it should give you many
years of outstanding musical reproduction.
Aesthetically, the HT600 is a perfect match for the
HTP home theatre processor.
HT600
5 Channel Power Amplifier
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HT600 5 Channel power amplifier Instructions for Use. Page 2
of 7
SAFETY INFORMATION
IMPORTANT!
This unit is supplied in the U.K. with a mains lead fitted with a moulded 13 amp plug.
If, for any reason, you need to cut off this plug, please observe the following safety precautions.
Please dispose of the cut-off plug safely. It must not be plugged into a mains power supply.
The wires in the mains lead supplied with this appliance are coloured in accordance
with the following code:
Green and yellow..............Earth
Blue...............................Neutral
Brown................................Live
WARNING - This appliance must be earthed
As the colours of the wires of the mains lead of this appliance may not correspond with the
coloured markings identifying the terminals in your plug, proceed as follows:
The wire which is coloured green-and-yellow must be connected to the terminal in the plug
which is marked with the letter E or coloured green or green-and-yellow, or by the earth
symbol.
The wire which is coloured brown must be connected to the terminal which is marked with the
letter L or coloured red.
The wire which is coloured blue must be connected to the terminal which is marked with the
letter N or coloured black.
If connecting to a BS1363 plug, a 10 amp fuse must be used.
WARNING - Radio Frequency Interference (RFI)
This hi-fi product has been tested to ensure that its operation will not be adversely affected by
normal background levels of RFI. It is possible that if this product is subjected to abnormally
high levels of RFI the unit may be susceptible and not perform as expected. In the unlikely
event of this happening on a regular basis, please contact Musical Fidelity's service department.
The unit has also been tested to ensure that it does not radiate excessive levels of RFI that could
affect other pieces of electronic or electrical equipment.
The electronics in modern hi-fi equipment is complex and hence may be damaged by lightning.
It is possible that during electrical storms the operation of some equipment may be adversely
affected. For complete protection of your hi-fi system during such storms, mains plugs and aer-
ial leads should be disconnected.
Always ensure that when disconnecting and re-connecting your hi-fi equipment the mains
supply is switched off.
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HT600 5 Channel power amplifier Instructions for Use. Page 3
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GENERAL ADVICE
INSTALLATION PRECAUTIONS and USER INFORMATION
Your new HT600 5 Channel power amplifier is designed and built to provide trouble-free performance, but as with
all electronic devices it is necessary to observe a few precautions.
ALWAYS disconnect your entire system from the AC mains before connecting or disconnecting any cables,
or when cleaning any component.
The HT600 generates a certain amount of heat and requires ventilation. Do not place it on a soft surface
such as a rug into which it could sink. You should also avoid a built-in installation place such as a book-
case or a rack unless you can provide proper ventilation for the unit.
This product is equipped with a three-conductor AC mains power cord which includes an earth ground con-
nection. To prevent shock hazard, all three connections must ALWAYS be used. if your electrical outlets will
not accept this type of plug an adapter may be purchased. If an adapter is necessary, be sure it is an
approved type and is used properly,
Heed all warnings on the back of the unit.
Only connect the HT600 to a mains outlet of the voltage marked on the back of the unit.
The HT600 will operate in accordance with its specifications as long as the environmental conditions are
kept in the following ranges:-
Temperature 5 to 45 degrees Celsius
Humidity 10 to 90% non condensing
Position the mains lead and all interconnects where they are not likely to be walked on or trapped by items
placed on them.
Do not use near water. The unit shall not be exposed to dripping or splashing and no objects filled with
liquids, such as vases, shall be placed on the unit.
Do not place the unit near direct heat sources such as radiators or other equipment that produces heat.
Do not place the unit where it can be subjected to direct sun-light.
Do not remove any covers or try to gain access to the inside. The warranty is invalid if the unit has been
tampered with. There are no user adjustments within. Refer all service work to an authorised Musical
Fidelity agent.
Dust regularly with a soft duster or soft brush but be careful when using cleaning or
polishing agents -they may harm the surface finish.
NEVER use flammable or combustible chemicals for cleaning audio components.
There are fuses in the unit. In the unlikely event that one blows, take your unit to your audio dealer. Do
NOT try to replace the fuse yourself or you will invalidate the warranty.
No naked flame sources, such as lighted candles, should be placed on the unit.
Keep out of reach of children.
Important! Unauthorised opening of the equipment will invalidate any warranty claims.
Note: To help your dealer identify your amplifier if after-sales service is required, please quote the serial number
located on the rear panel of the unit.
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HT600 5 Channel power amplifier Instructions for Use. Page 4
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CONNECTIONS AND FACILITIES
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RIGHT SURROUND
INPUT
MOUNT UNIT ON SOLID SURFACE. DO NOT REMOVE
SCREWS OR COVERS UNDER ANY CIRCUMSTANCES.
NO USER SERVICEABLE COMPONENTS INSIDE.
REFER SERVICING TO QUALIFIED ENGINEER.
SEE OWNERS MANUAL FOR FURTHER INFORMATION.
RIGHT SURROUND
OUTPUT
RIGHT
OUTPUT
CAUTION
RIGHT
INPUT
CENTRE
OUTPUT LEFT SURROUND OUTPUT
CENTRE
INPUT
MUSICAL FIDELITY
HT600 5 CHANNEL AMPLIFIER
MANUFACTURED IN ENGLAND BY MUSICAL FIDELITY
LEFT SURROUND
INPUT
LEFT
OUTPUT
POWERCONSUMPTION1200W
LEFT
INPUT
7 8 9 10 11 12
13 14 15 16 17
1ON/OFF mains switch
2Left channel blue LED
3Left surround channel blue LED
4Centre channel blue LED
5Right surround channel blue LED
6Right channel blue LED6
7Right front line level input
8Right surround line level input
9Centre channel line level input
10 Left surround line level input
11 Left front line level input
12 IEC mains inlet
13 Right front speaker output
14 Right surround speaker output
15 Centre channel speaker output
16 Left surround speaker output
17 Left front speaker output
1 2 3 4 5 6
HT600 back panel layout
HT600 front panel layout

HT600 5 Channel power amplifier Instructions for Use. Page 5
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CONNECTIONS
Before switching on your amplifier system please read carefully the instructions on the follow-
ing pages.
INPUT CONNECTIONS
All connections should be made with the power OFF.
The HT600 power amplifier can be used with any preamplifier or any line level source which
has a volume control. We highly recommend the matching HTP Home Theatre Processor avail-
able from Musical Fidelity.
Connect the Left and Right front outputs, Left and Right surround outputs and the centre chan-
nel output from your HTP or other preamplifier to the phono inputs on the back panel of the
HT600. For the best results we recommend that you use either Musical Fidelity X-LINX "no-
nonsense" interconnect cables for this connection or the highly rated Nu-Vista interconnects
with integral RFI suppression. Various lengths are available in the Nu-Vista interconnect range.
Please contact your local dealer for more information.
OUTPUTCONNECTIONS
All connections should be made with the power OFF.
Connect your loudspeakers to the loudspeaker terminals situated on the back panel marked as
Left, Right, Left Surround, Right Surround and Centre Loudspeaker Outputs. Ensure the polar-
ity of each speaker is observed when connecting the speaker leads.
Once these connections are made, plug in the IEC type mains lead and switch on the unit.
WARNING
THE HT600 POWER AMP IS A POWERFUL AMPLIFIER AND IS
DESIGNED TO SUPPLY HIGH VOLTAGES AND HIGH CURRENTS
THROUGH THE LOUDSPEAKER TERMINALS. THEREFORE TO AVOID
ANY POSSIBILITY OF AN ELECTRIC SHOCK DO NOT TOUCH THE
SPEAKER TERMINALS WHEN THE UNIT IS BEING USED.
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TROUBLESHOOTING
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Basic troubleshooting of the HT600 is similar to troubleshooting of any other electrical or elec-
tronic equipment. Always check the most obvious possible causes first. In our experience most
problems are caused by incorrect, faulty or not properly connected interconnects. Please check
all these first. To give you a few other ideas of what to look for, please check the following:-
HT600 5 Channel power amplifier Instructions for Use. Page 6
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ALL 5 Blue LEDs do not light,
Power cord disconnected, Re-connect.
Mains switch switched off, Switch on.
One of the Blue LEDs does not light,
Unit has a fault Switch off and refer back to you dealer.
Sound is not precise, lacking in bass
and stereo image
Speakers are connected out of phase Make sure that all speakers are connected
correctly.
If none of these actions effect a cure, please contact your dealer, or an authorised Musical Fidelity service agent.
Remember, never open the case of the HT600 5 Channel power amplifier yourself, as this will invalidate the guar-
antee.

HT600 5 Channel power amplifier Instructions for Use. Page 7
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SPECIFICATIONS
issue 1/12.07.2000
Power output (0.5% distortion) 112 watts per channel into 8 Ohms
160 watts per channel into 4 Ohms
THD 20Hz - 20KHz < 0.01% at 1KHz at 1W
Typically 0.005% at 1KHz at full power
Frequency response 10Hz - 20KHz +0.2dB
Frequency response 10Hz - 100KHz _3.0dB
Channel separation >-85dB 20Hz-20kHz
Input sensitivity 1000mV
Input impedance 31KOhm
S/N ratio > -100dB ‘A’ weighted (Ref 1W)
> -120dB ‘A’ weighted (full output)
Power consumption 1200W Max
Dimensions Amplifier 440 x 95 x 400mm (W x H x D)
Height includes feet, depth includes terminals
Power requirements 100/115/230V AC 50/60Hz
(Factory preset)
Weight 16 kg (un-boxed)
Standard accessories IEC type mains lead
Musical Fidelity reserves the right to make improvements which may result in specification or feature changes without notice.
HT600
5 Channel Power Amplifier