Linn Powertek Manuel utilisateur

NTRODUCTION Thank you for buying this Linn product. As with all our products, the Linn

POWERTEK power amplifier was designed and manufactured to outperform the competition.

You will find that it is capable of excellent sound performance when partnered with other high

quality components. The POWERTEK is made with top quality components and is thoroughly

tested before it leaves our factory.

The POWERTEK is ideally suited for use with the Linn PRETEK or other high quality preamplifiers.

Input/Output facilities are provided that allow convenient use of the POWERTEK in systems that require

multiple power amplifiers.

When used with a Linn INTEK integrated amplifier, the POWERTEK provides a convenient and cost

effective method of improving system performance through passive bi-amplification.

INSTALLATION Unpack the amplifier and retain the packing for future use. Ensure that the amplifier is

earthed and that adequate ventilation is provided. Position the amplifier far enough away from the

turntable to avoid hum.

POWERTEK power amplifier

Owners manual and registration card

Mains lead

2x single phono-phono leads

4 x pairs KNEKT loudspeaker plugs

Spare fuse

MAINS CONNECTIONS

WARNING – Use the earthed, moulded mains lead supplied. Never use an unearthed plug or adapter.

WARNING

THIS APPLIANCE MUST BE EARTHED

IMPORTANT

The wires in the mains load are coloured in accordance with the following code:

Green-and-yellow: Earth

Blue: Neutral

Brown: Live

As the colours of the wires in the mains load 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 by the earth symbol or coloured green or green-and-yellow.

The wire, which is coloured blue, must be connected to the terminal that is marked with the letter N or

coloured black.

The wire, which is coloured brown, must be connected to the terminal that is marked with the letter L or

coloured red.

CONTENTS

WARNING - The pre-amplifier and the power amplifier must be switched off before connecting or

disconnecting any of the plugs on the rear panel.

For all the following input connections ensure that the left channel plug from the source is connected to

the left channel socket on the pre-amplifier, and likewise for the right channel connection.

Two sets of RCA phono sockets are provided on the rear of the POWERTEK. These are labelled

LINE INPUT and LINE OUTPUT and allow chaining the signal from one Powertek to another in multi-

amplifier applications.

In conventional use (in a system with a single power amplifier), the signal from your preamplifier should

be routed to the LINE INPUT sockets of the POWERTEK. The LINE OUTPUT sockets will remain

unused.

If you have speakers that allow passive bi-amplification or tri-amplification (or you are using multiple

POWERTEKS to drive several sets of speakers), the signal from the preamp is routed to the LINE

INPUT sockets of the first POWERTEK. The signal is then chained to the second POWERTEK by

connecting an RCA phono interconnect cable from the LINE OUTPUT of the first POWERTEK to the LINE

INPUT sockets of the second POWERTEK. This connection procedure is repeated for each

POWERTEK in the chain.

When bi-amplifying with an INTEK integrated amplifier, route the signal from the INTEK PRE-OUT,

POWER-INsockets to the LINE INPUTS of the POWERTEK.

INPUT CONNECTIONS

IMPORTANT CAUTION NOTE When passively bi-amping or tri-amping loudspeakers, be sure to

remove any connecting links that are at the speaker input terminals. Failure to do so will short the

amplifier outputs together and may damage the power amplifiers.

Two sets of speaker outputs are provided on the rear of the POWERTEK. This simplifies the bi-wiring of

speakers such as the INDEX, HELIX, or NEXUS.

Whether you are using single speaker cable, bi-wiring, or tri-wiring, the 4mm plugs supplied should be

properly soldered to good quality cable. For best results we recommend Linn loudspeaker cable,

which is available through your authorised Linn retailer.

Please note that speaker cable is directional and usually provides slightly better performance when

orientated in the proper direction. Linn speaker cable is imprinted with a circular Linn logo followed by

the model number of the cable. When the cable is properly orientated, the circular logo will point

towards the loudspeakers.

SPEAKER INPUTS

For more information on the performance advantages of bi-wiring, tri-wiring, passive bi-amplification, and

AKTIV multi-amp systems, consult your local authorised Linn retailer.

AMPLIFIER OVERLOAD PROTECTION. There are two levels of electronic protection in the POWERTEK.

One is an over-current sensor, which protects against short circuits or very low impedance loads. The

other is an over-temperature sensor which protects against inadequate ventilation. The internal

temperature sensor will shut the amplifier down if the sensor reaches 70 degrees centigrade.

To re-set, switch the POWERTEK off for a few minutes and then switch it back on. The amplifier will have

re-set itself and will resume working normally.

LOAD IMPEDANCE. The POWERTEK will drive two pairs of 8 ohm loudspeakers, or one pair of 4 ohm

loudspeakers without any problems. Two pairs of 4 ohm loudspeakers may cause the over-current

protection trip to operate at moderate volume levels. However, no combination of loudspeakers will

cause damage to the POWERTEK.

THE LINN PERFORMANCE ADVANTAGE

TURNTABLES For best results a turntable should be placed on a small, light, rigid shelf.

POWER SUPPLIES Take care not to position too close to signal leads, turntables or pre-amplifier.

AMPLIFIERS Pre and power amplifiers may create hum if positioned too close together. Experiment

by moving components when the system is on but not playing music (although it is best to turn the

volume down whilst actually moving the components).

LOUDSPEAKERS Loudspeakers should be positioned correctly. They should be mounted on rigid

stands, and not subject to any rocking movement. All Linn speakers except NEXUS and HELIX are

designed to be placed close to the wall.

CLEAN CONTACTS It is important that the electrical contacts in a hi-fi system are kept mechanically

sound and clean. Unplugging and replugging all the connectors occasionally will effectively clean

contacts.

WARNING - This should be carried out after the mains supply has been switched off.

INTERCONNECT LEADS Correct cables should be used. We recommend good quality copper cable

for interconnects leads and advise 4mm multicore copper cable, such as Linn K20 for speaker leads.

Your Linn Dealer can supply high quality interconnects for linking all your hi-fi components.

FUSE PROTECTION A fuse is fitted to the power input socket on the rear of the POWERTEK. Please

note that the fuse holder also contains one spare fuse.

The Linn POWERTEK power-amplifier is designed for a long life and any servicing should be carried out

by an authorised dealer.

Dust or finger marks can be removed by using a soft damp cloth. Avoid the use of domestic cleaning

products.

GENERAL SYSTEM INSTALLATION

MAINTENANCE

This product is guaranteed under the conditions that apply in the country of purchase.

In addition to any statutory rights the customer may have, we undertake to replace any parts which have

failed due to faulty manufacture. To help us please return your completed registration card to Linn or

your national distributor. This will enable you to receive the Linn RECORD Newsletter, containing

information on merchandise, the Linn SELEKT record scheme and new developments at Linn.

WARNING – Refer all enquiries to authorised dealers only. Unauthorised servicing or dismantling of the

product invalidates the manufacturer's warranty.

If you are in any doubt, please contact your nearest Linn dealer. For information on your nearest Linn

dealer contact the Linn factory in Scotland or your national distributor.

IMPORTANT

Please keep a copy of the sales receipt to establish the purchase date of the product.

Please ensure that your equipment is insured by you during any transit or shipment for repair.

LINN PRODUCTS LIMITED, FLOORS ROAD, WATERFOOT, EAGLESHAM,

GLASGOW, G76 OEP, SCOTLAND. TELEPHONE: ++44 (0)141 307 7777

FACSIMILE: ++44 (0)141 644 4262

GUARANTEE AND SERVICE

SPECIFICATIONS all sensitivities for 20 Vrms output at (50w per 8 ohms) at lKhz

lnput = 741mVrms / 4.7Kohms

Maximum power 50 watts/8 ohms per channel

80 watts/4 ohms per channel

100V - T6.3A, 115V - T6.3A, 22OV - T3.15A, 24OV - T3.15A

voltage set by factory fitted transformer option

300 VA maximum, 15W idling

Width - 430mm Depth - 350mm Height - 90mm

7kg

INPUTS

OUTPUTS

MAINS SUPPLY / FUSE

POWER CONSUMPTION

DIMENSIONS

WEIGHT

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