Musical Fidelity Tri-Vista Bedienungsanleitung

Tri-Vista Power (Mono) Instructions for Use Page 1of 9

Issue A: April 2003

Tri-Vista

MONOBLOC POWER AMPLIFIER

INSTRUCTIONS FOR USE

Thank you for purchasing the Musical Fidelity

Tri-Vista Power Amplifier.

Used properly and carefully, it should give you many

years of outstanding musical reproduction.

Aesthetically, the Tri-Vista Power amplifier is a perfect match for the

Tri-Vista Preamplifier and Tri-Vista SACD player which are part of

our 20th Anniversary series.

Together, they form one of the finest hi-fi systems available today.

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.

Tri-Vista Power (Mono) Instructions for Use Page 2of 9

SAFETY INFORMATION

Issue A: April 2003

IMPORTANT! (U.K. only)

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 remove the fuse holder and dispose of

the plug safely, out of reach of children. It must not be plugged into a mains outlet.

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 13 amp fuse must be used.

WARNING:

The Tri-Vista Power is a powerful amplifier and must necessarily supply high

voltages 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.

WARNING:

Any modifications to this product not expressly approved by Musical Fidelity who

is the party responsible for standards compliance could void the user’s authority to

operate this equipment.

Tri-Vista Power (Mono) Instructions for Use Page 3of 9

Issue A: April 2003

GENERAL ADVICE

INSTALLATION PRECAUTIONS and USER INFORMATION

Your new Tri-Vista 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:

Heed all warnings shown on the back of the product.

Only connect the Tri-Vista Power amplifier 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 amplifier, for example, flower

vases 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 amplifier is dangerous, and may cause electric shock or fire hazard.

Do not place the unit near heat sources such as radiators, direct sunlight or other equipment.

The case of this amplifier can run at high temperatures - operate the unit in a well ventilated

area, and do not touch the side heatsink fins after periods of use at high output power.

Do not remove covers or try to gain access to the inside. There are no internal user adjust-

ments. Refer all service work to an authorised Musical Fidelity agent.

NOTE: Unauthorised opening of the equipment will invalidate any warranty claims.

There are fuses inside the Tri-Vista amplifier. In the unlikely event that one blows, refer the unit

to your audio dealer. Do NOT try to replace the fuse yourself as this will invalidate the war-

ranty.

Dust regularly with a soft duster 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 Tri-Vista 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 interfer-

ence. However, if a problem persists, please contact your Musical Fidelity agent.

Tri-Vista Power (Mono) Instructions for Use Page 4of 9

Issue A: April 2003

Audio input socket (RCA type)

Front panel

Back panel

Illuminated feet with multi-colour indicator LEDs

CONNECTIONS AND FACILITIES - MAIN UNIT

Power supply lead input - low voltage

Mains input from

power supply unit

Control lead socket

Speaker output

terminals

(three pairs)

Tri-Vista Power (Mono) Instructions for Use Page 5of 9

Issue A: April 2003

CONNECTIONS AND FACILITIES - POWER SUPPLY

Power supply unit back panel

9Control circuit fuse

10 Power supply unit low voltage output

11 Power supply unit fuse

12 Mains switch

13 Control lead socket

14 PSU switched mains output

15 Mains inlet - 16 Amp IEC type

Power supply unit front panel

1Power-on button

2Power-off button

3Fluorescent display - see page 7

4Amplifier power indicator LED

5PSU power indicator LED

6Display brightness button

- see page 7

7Display information change button

- see page 7

8Illuminated feet with multi-colour

indicator LEDs

1 2 6 7

345

9 10 11 12

13 14 15

Tri-Vista Power (Mono) Instructions for Use Page 6of 9

AUDIO CONNECTIONS

The Tri-Vista Power amplifier can be used

with a preamplifier or line level source

which has a volume control. We highly

recommend the matching Tri-Vista pream-

plifier available from Musical Fidelity.

Connect the audio output from your pre-

amplifier to the RCA input socket on your

Tri-Vista power amplifier marked INPUT,

using a good quality co-axial audio lead

(not supplied).

LOUDSPEAKER CONNECTIONS

Using the accessory speaker lead supplied,

connect your loudspeaker to the terminals

on the back panel marked SPEAKER

OUTPUTS. Any of the three pairs of ter-

minals provided can be used. The wiring

must all be “in phase”, namely the +and -

terminals connected to any additional

speakers the correct way round.

Warnings:

The Tri-Vista Power amplifier has a

very large output capability. All input,

output and power connections must

therefore be reliable, and made with the

mains power switched OFF to prevent

possible damage to your loudspeakers.

The negative (black) terminal is part of

a “bridged” circuit, and therefore has

live speaker output. It must not be con-

nected to any chassis or earth terminal.

Issue A: April 2003

POWER CONNECTIONS

There are three accessory interconnection

leads supplied with the Tr-Vista kW Power

amplifier, two leads for low voltage and a

thick armoured mains cable. Connect these

leads between the power supply unit and

amplifier sockets as shown by the panel

socket destination markings.

Plug the accessory IEC mains lead into the

rear panel socket of the power supply unit,

then the other end into a convenient wall

outlet.

BEFORE SWITCHING ON . . . . .

Turn the volume control on your preampli-

fier to minimum, and switch on its power.

OPERATION

Press the POWER rocker switch on the

back panel of the power supply unit. A

blue PSU POWER LED on the front panel

will light to confirm that power is applied,

but the system will not operate, as control

is now from the front panel.

To switch on, press the ON button on the

front panel. The amplifier will then power

up, confirmed by a further blue

AMPLIFIER POWER LED on the front

panel.

LEDs in the feet of the amplifier and power

supply will also light red for about six sec-

onds, indicating that all audio outputs are

muted. Muting is then disabled, and feet

illumination fades over approximately fif-

teen seconds to amber, showing that your

Tri-Vista Power amplifier is now ready for

use.

continued . . .

CONNECTIONS and OPERATION

Tri-Vista Power (Mono) Instructions for Use Page 7of 9

OPERATION (contd.) &FLUORESCENT DISPLAY

Issue A: April 2003

BRIGHTNESS

Pressing the BRIGHTNESS button on the

power supply front panel cycles the fluo-

rescent display through five brightness

levels.

DISPLAY INFORMATION

Each time the INFOrmation button on the

power supply front panel is pressed, the

display mode changes between three

states. Note that the display still functions

if power to the amplifier has been switched

off by the OFF button.

When the button is pressed for the first

time after the system has been switched on,

the display shows the total number of

hours the amplifier has been powered :

Press again . . .

. . . the serial number is shown :

Press again . . .

. . . the model number is shown :

Press again . . .

. . . the display reverts to its initial state :

Select the required audio input source on

your pre-amplifier, and adjust the volume

control to obtain the preferred sound level.

After a period of about 35 minutes, the

LED feet colour fades to blue, confirming

that the amplifier is fully warmed up.

Pressing the OFF button turns off the dis-

play and power to the amplifier.

AUTOMATIC FAULT DETECTION

If there is a fault, or the cables are not con-

nected correctly, the Tri-Vista kW Power

amplifier will shut down automatically.

There are sensors in the amplifier to detect

adverse operating conditions. Under these

conditions the display shows the word

CLIPPING and a number between 1 and

240 depending on severity. If this number

reaches 240, the amplifier will shut down.

Similarly, if a major overload is detected,

the amplifier will shut down immediately.

Note :

After an initial “burn-in” period of 168

hours in the factory, this counter has been

set to zero.

The fluorescent display then shows the fol-

lowing automatic sequence:

Tri-Vista Power (Mono) Instructions for Use Page 8of 9

PROBLEMS ?

Issue A: April 2003

Basic problem-solving with an amplifier is similar to troubleshooting any other electrical or

electronic equipment. Always check the most obvious possible causes first, such as the

following:

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 Tri-Vista Power amplifier your-

self, as this will invalidate the guarantee.

Problem Possible Cause Remedy

No power when MAINS Mains plug or plugs not Plug in securely

POWER switch is operated inserted fully into rear socket

No sound Tape monitor function has Switch off tape monitor

been selected on the pre- at the pre-amplifier

amplifier

Wrong connections between Check audio input lead

pre-amplifier and the connections

Tri-Vista Power

Speakers not connected, or Check speaker cables

incorrectly wired

The sound is not precise, Speakers are connected out of Ensure method of conn-

lacking bass and stereo phase, i.e. connections to one ection is the same for left

image speaker (+ and -) are reversed and right speakers

Tri-Vista Power (Mono) Instructions for Use Page 9of 9

SPECIFICATIONS :

Output voltage, RMS 92 Volts 20Hz to 20kHz

peak 130 Volts

Power output 1000 Watts into 8 Ohms (24dBW)

1800 Watts into 4 Ohms

3000 Watts into 2 Ohms

Peak output current ±200 Amps

Damping factor 205

Output devices 40

Total Harmonic Distortion + noise 0.005% at 1kHz up to 80% power, into 8 Ohms

< 0.005% 20Hz to 20kHz at 12.5 Watts into 8 Ohms

Intermodulation distortion 0.002% at 12.5 Watts into 8 Ohms

Frequency response 20Hz to 20kHz ±0dB

10Hz to 100kHz +0/-1dB

Audio gain 30dB (31.5 times) nominal

Input impedance 31K Ohm

Input sensitivity for full power output into 8 Ohms 2.92 Volts

Signal / noise ratio, reference full power output > 124dB “A”- weighted

Input 1 RCA connector

Output 1 monobloc channel via 3 pairs of speaker binding posts

Power requirements 100 / 115 / 230V AC, 50 / 60Hz (factory preset)

3000 Watts maximum with 8 Ohms load

160 Watts idle

Dimensions Main unit 483 mm, 19 inches wide

318 mm, 12.5 inches high including feet

450 mm, 17.7 inches deep including terminals

Power supply 483 mm, 19 inches wide

168 mm, 6.6 inches high including feet

374 mm, 14.7 inches deep including sockets

Weight Main unit 43 kg, 94.8 lbs unit only, unboxed

61 kg, 135 lbs in shipping carton

Power supply 27.7 kg, 61.1 lbs unit only, unboxed

33.2 kg, 73.2 lbs in shipping carton

Standard IEC mains lead - 16 Amp type :2.4 metres (94.5 inches)

accessories Switched mains interconnection leads :one each, 1.2 metres (47.3 inches), and 0.7 metres (27.5 inches)

Low voltage interconnection leads :one each, 1.2 metres (47.3 inches), and 0.7 metres (27.5 inches)

Control interconnection leads :one each, 1.2 metres (47.3 inches), and 0.7 metres (27.5 inches)

Loudspeaker lead :twin conductors, 3 metres (118 inches)

Issue A: April 2003

Musical Fidelity reserves the right to make improvements which may result in specification or feature changes without notice.

Tri-Vista

Power Amplifier

CAUTION

Read this BEFORE connecting your

kW Amplifier - it could save your

loudspeakers.

Make sure the kW is turned OFF for at least five

minutes before connecting or disconnecting it, or

making any other changes, for example changing

loudspeaker cables.

Turning the kW OFF will protect your loudspeakers

from the destructive power of an accidental 5000

watt peak.

Because the kW will NOT CLIP, any inadvertent

electrical noise will be hugely amplified by the kW.

As the kW can deliver 5000 watt peaks, a mistake

could vaporise the internals of your loudspeakers.

At the factory, we ALWAYS switch off the kW for

at least five minutes before we change anything.

So should you. You have been warned . . .

COVER

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