Linn LK240 Owner's Manual

Linn LK240 Owner's Manual

Single speaker power amplifier
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S I N G L E
S P E A K E R
P O W E R
A M P L I F I E R
O W N E R S
M A N U A L

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Summary of Contents for Linn LK240

  • Page 1 S I N G L E S P E A K E R P O W E R A M P L I F I E R O W N E R S M A N U A L...
  • Page 2: Important Safety Information

    This appliance is supplied with a non-rewireable mains plug for the intended country. Replacement mains leads can be obtained from your Linn retailer. Should you need to change the plug please dispose of it carefully. A plug with bared conductors is dangerous if engaged in a live socket.
  • Page 3 GENERAL SAFETY INSTRUCTIONS Read instructions. Read the safety and operating instructions before operating the appliance. Retain instructions. Retain the safety and operating instructions for future reference. Heed warnings. Observe all warnings on the appliance and in the operating instructions. Follow instructions. Follow all operating and use instructions. Water and moisture.
  • Page 4 Mains plug replacement Should your mains plug need replacing and you are competent to do this proceed as follows. If you are in doubt contact your Linn retailer or a competent electrician. a) Disconnect the plug from the mains supply.
  • Page 5 Copyright and acknowledgements Copyright © Linn Products Limited. Linn Products Limited, Floors Road, Waterfoot, Glasgow, G76 0EP, Scotland, United Kingdom. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher.
  • Page 6: Table Of Contents

    Contents Introduction ........1 The LK240 and music ........2 Setting up the LK240 ........5 Unpacking ........5 Positioning ........7 Connecting ........8 Operation ........9 Protection ........10 Guarantee and service ........11 Technical information ........12 Specifications ........
  • Page 8: Introduction

    To do that, you need to know exactly how to get the best out of your LK240 and that is what this manual is all about. In the next few pages you will find out everything you need to know about how to set up the LK240, and how to use it to get the best possible results.
  • Page 9: The Lk240 And Music

    This enables it to be left on with minimum power consumption. An indicator light on the front panel remains red when the LK240 is in standby and green when it is powered up, telling you at a glance the operational status of the LK240.
  • Page 10 The LK240 provides two input sockets to make it easy to daisy chain multi-amplifier systems, allowing you to boost the output power of your system, or take advantage or bi-amping and tri-amping. Loudspeakers can be bi-wired, or tri-wired to the LK240 by the use of the four loudspeaker sockets to obtain even higher sound quality.
  • Page 11 To further enhance performance, you can use two or three LK240s to bi-amp or tri-amp to the loudspeakers, each LK240 driving the bass, midrange, and treble signals separately. When bi-amping or tri-amping the highest possible performance can be obtained by removing the passive crossover units from the loudspeaker and fitting active crossover modules to the LK240 to accurately divide the signal into the appropriate frequency bands.
  • Page 12: Setting Up The Lk240

    Setting up the LK240 This chapter explains how to unpack your Linn LK240 Single Speaker Power Amplifier, and how to install it with your other hi-fi components. Unpacking Before connecting the LK240 to the mains supply, you should check the following: •...
  • Page 13 Selecting the correct voltage The LK240 is factory-set for a 230 volts mains supply and must not be connected to a mains supply before it is adjusted for your local voltage. To do this, slide the red voltage switch at the back of the unit until the appropriate voltage is displayed.
  • Page 14: Positioning

    As the colours of the wires in the mains lead of the LK240 may not correspond with the coloured marking identifying the terminals in your plug, proceed as follows: Connect this wire To the terminal Green and yellow Marked with the letter E, or by the earth symbol, or coloured green or green and yellow.
  • Page 15: Connecting

    SPARE SENSITIVITY Connecting the mains supply Connect the LK240 to a mains supply using the mains cord supplied. Note that the LK240 should be switched off before connecting or disconnecting the plug on the rear panel, or you may generate surges which could damage other components in your hi-fi system.
  • Page 16: Operation

    If American, the socket will be suitable for banana type connectors. Operation To turn on the LK240 amplifier, press the power switch on the front panel. Signal detector sensitivity The LK240 uses signal sense circuitry to detect the presence of an audio input signal.
  • Page 17: Protection

    Refer to the section Positioning , page 7. If the LK240 is overloaded it will power down, and the indicator light on the front panel will flash green and red. Turn the LK240 off and check the loads you are applying to it.
  • Page 18: Guarantee And Service

    In the UK and other markets, extended warranty is offered to customers who register their purchase with Linn. A registration card can be obtained from your Linn retailer and should be stamped by them. This will also enable you to receive the Linn RECORD newsletter and details of hi-fi and music available from Linn.
  • Page 19: Technical Information

    Technical information Specifications Power supplies Fully regulated dual design Output power 125W per channel into 8 (230 Vac mains) 240W per channel into 4 Input signal for 1.15V rms maximum output Maximum output 31V rms voltage Gain x27 (28.6dB) Input impedance 4700 Frequency response (-3dB) 2Hz–50kHz...
  • Page 20: Index

    Index acknowledgements iv LK240 and music 2 active crossover modules 4 active playback 4 audio input, connecting 8 mains lead wiring 6 mains plugs i mains supply, connecting 8 bi-amping 4 bi-wiring 3, 9 operation 9 overheating 7, 10 connections 8...
  • Page 21 standby mode 2, 9 unpacking 5 technical information 12 temperature, maximum 10 voltage selection 6 tri-amping 4 tri-wiring 3, 9...
  • Page 22 PACK 141...

Table of Contents