Linn Powertek Bedienungsanleitung
2
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.
I
3
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
4
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
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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
6
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
7
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
8
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
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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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