Explanation of symbols used in this manual or on the rear/underside of the
apparatus:
This symbol is intended to alert the user to the presence of uninsulated
dangerous voltages within the enclosure of sufficient magnitude to cause
electric shock.
This symbol is intended to alert the user to the presence of important
operation, maintenance and servicing information in the instruction and
service manuals.
For apparatus connected to the mains electricity supply
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
REPLACE THE MAINS FUSE IN THE PLUG WITH ONE OF THE SAME TYPE
AND RATING.
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE.
WWAARRNNIINNGG
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS
APPARATUS TO RAIN OR MOISTURE. SHOCK HAZARD - DO NOT OPEN.
MMAAIINNSSPPLLUUGGSS
This apparatus 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.
The Brown wire must be connected to the Live (Line) supply pin.
The Blue wire must be connected to the Neutral supply pin.
The Green/Yellow wire must be connected to the Earth (Ground) supply pin.
Please contact your retailer or a competent electrician if you are in any doubt.
Refer to the rear or underside of the product for fuse and power
consumption information.
location or position does not interfere with its proper ventilation. For
example, the apparatus should not be situated on a bed, sofa, rug, or
similar surface that may block the ventilation openings, or placed in a builtin installation such as a bookcase or cabinet that may impede the flow of
air through the ventilation openings.
A polarised plug has two blades with one wider than the other. A
grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong is provided for your safety. If the provided plug
does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.
when the apparatus has been damaged in any way, such as power-supply
cord or plug has been damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
apparatus, ensure that the antenna system is grounded to provide some
protection against voltage surges and static build up. In the USA see article
810 of the National Electrical Code ANSI/NFPA 70 concerning installation
requirements.
Connect the apparatus to a power supply only of the type
Use the mains plug to disconnect the apparatus from the
An outdoor antenna should be located away from
If an outdoor antenna is connected to the
Do not connect the apparatus to a telephone line
Do not let objects or liquids fall into the
sshhoouullddbbee
piiccaall
UK USERS PLEASE READ THIS IMPORTANT SAFETY
INFORMATION
Fuse replacement
This appliance is fitted with a non-rewireable 13 amp mains plug. The plug
contains a 5 amp fuse. If the fuse has blown it can be replaced as follows:
a) Pull out the red fuse cover/carrier.
b) Remove and dispose of the blown fuse.
c) Fit a new 5 amp BS1362 approved fuse into the carrier and
push the carrier back into the plug.
Always ensure the fuse cover is fitted. If the fuse cover is missing do not use the
plug. Contact your Linn retailer to obtain a replacement fuse cover.
Fuses are for fire protection and do not protect against electric shock.
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.
b) Cut off the plug and dispose of it safely. A plug with bared
conductors is dangerous if engaged in a live socket.
c) Only fit a 13 amp BS1363A approved plug with a 5 amp fuse.
d) The cable wire colours or a letter will be marked at the
connection points of most quality plugs.
Attach the wires securely to their respective points. The Brown wire must go to
the Live pin, the Blue wire must go to the Neutral pin, and the Green/Yellow wire
must go to the Earth pin.
e) Before replacing the plug top ensure that the cable restraint is
holding the outer sheath of the cable firmly and that the wires
are correctly connected.
WARNING
THIS APPLIANCE MUST BE EARTHED.
iiAKURATE 2200•3200•4200
Page 5
CE Declaration of Conformity
Linn Products Ltd declare that this product is in conformance with the Low Voltage
Directive 73/23/EEC and Electromagnetic Compatibility 89/336/EEC as amended
by 92/31/EEC and 93/68/EEC.
The conformity of the designated product with the provisions of Directive number
73/23/EEC (LVD) is proved by full compliance with the following standards:
Marking
Hazardous radiation
Heating under normal conditions
Shock hazards under normal
operating conditions
Insulation requirements
Fault conditions
Mechanical strength
Parts connected to the mains
supply
Components
Terminal devices
External flexible cords
Electrical connections and
mechanical fixings
Protection against electric shock
Stability and mechanical hazards
Resistance to fire
The conformity of the designated product with the provisions of Directive number
89/336/EEC (EMC) is proved by full compliance with the following standards:
Note:
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Waste Electrical and Electronic Equipment (WEEE)
Directive
Directive 2002/96/EC of the European Parliament and of the Council
The symbol (right) is shown on this product. It indicates that the
product should not be disposed of with regular household waste,
but should be disposed of separately.
Electrical and electronic equipment can contain materials that are
hazardous to the environment and human health and therefore
should be disposed of at a designated waste facility or returned to
your retailer for the appropriate recycling to take place (see
www.linn.co.uk for further information).
If you wish to dispose of this product and the product still functions, please
consider recycling/reusing it by donating it to a charity shop, selling it or
part-exchanging it with your retailer.
Linn Products Limited, Glasgow Road, Waterfoot, Eaglesham,
Glasgow, G76 OEQ, 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
ENGLISH
means, electronic, mechanical, photocopying, recording, or otherwise,
without the prior written permission of the publisher.
The content of this manual is furnished for information use only, is
subject to change without notice, and should not be construed as a
commitment by Linn Products Limited. Linn Products Limited
assumes no responsibility or liability for any errors or inaccuracies that
may appear in this manual.
Trade marks used in this publication:
registered trade marks of Linn Products Limited.
CCHHAAKKRRAA,,AAKKTTIIVV
Limited.
Linn Products Limited disclaims any proprietary interest in trade
marks and trade names other than its own.
Printed in the United Kingdom.
Pack 1322
iv AKURATE 2200•3200•4200
, and
KKLLIIMMAAXX
LLiinnnn
are trade marks of Linn Products
and the
LLiinnnnllooggoo
AAKKUURRAATTEE,,
are
Page 7
Contents
Introduction1
The AKURATE power amplifier range1
Features2
Installation3
Unpacking3
Positioning3
Connecting4
Connecting to the mains supply 4
Back panel connectors and switches 4
Back panels (Phono)5
Back panels (Balanced)6
Audio connections 7
Speaker terminals 8
Operation9
General9
Signal sensing9
Protection9
Technical Specifications10
Guarantee and Service 11
Channel Configuration Table 12
ENGLISH
vAKURATE 2200•3200•4200
Page 8
Page 9
Introduction
Over thirty years ago Linn was born out of a simple truth: the more
accurately a system reproduces sound, the greater the impact it will
have on the listener.
The AKURATE range of power amplifiers have been designed to offer
true flexibility when building or upgrading a stereo or multi-channel
system. All AKURATE amplifiers feature Linn's proprietary CHAKRA
technology, first used in the flagship KLIMAX 500 Twin power
amplifier, and are available with either phono or balanced connections.
Go AKTIV for the best possible sound from your Linn system!
The AKURATE power amplifier is the perfect partner for Linn’s
AKURATE CD player and AKURATE KONTROL pre-amplifier.
Add the AKURATE Tuner and AKURATE loudspeakers for a complete
AKURATE System and experience the exceptional sound quality
delivered by this dedicated music system.
The AKURATE power amplifier range
The following AKURATE power amplifier models are available:
Model Number of channels Power rating*
2200 two 200 W
3200 three 200 W
4200 four 200 W
Connector options
'Phono' models use RCA phono connectors for the input and output
signal connectors. They are designed to accept unbalanced line-level
audio signals.
'Balanced' models use 3-pin XLR connectors for the input and output
signal connectors. They are designed to accept balanced line-level
audio signals.
* Per channel, into 4 Ω (rms).
ENGLISH
1AKURATE 2200•3200•4200
Page 10
ENGLISH
Features
CHAKRA amplifier technology
All AKURATE power amplifiers feature Linn’s proprietary
CHAKRA technology.
The CHAKRA topology uses an array of large bi-polar
transistors as 'boosters' around a monolithic (single
chip) amplifier IC (integrate circuit). Linn's execution of
the monolithic to bi-polar transition is unique, and a patent application
for the design has been registered. When output current is less than a
few amps, all the power output comes from the monolithic IC,
maximising the speed and linear properties of this design. At higher
output currents the bi-polar transistors provide the majority of the
output current, leaving the monolithic to operate well within its
capability and able to correct any error instantaneously.
The topology is very compact, reducing the circuit area and length of
the signal path and is also highly efficient, producing much less heat
than traditional designs.
Switch Mode Power Supply
A Switch Mode Power Supply (SMPS) is incorporated into all
AKURATE power amplifiers. SMPS is an electronic power supply
which converts and regulates the incoming mains voltage, and also
provides the internal audio circuitry with excellent electrical isolation
from the outside world. The SMPS replaces the bulky, heavy and
noisy transformer and components normally found in convertional
amplifiers.
The major benefits of SMPS over conventional power supplies
include: small size, high efficiency, fast response, high mains input
tolerance, good load tolerance, low acoustic noise and, with its much
reduced material use, environmental friendliness.
amplifier, aside from the benefits of the improved amplification, the
sound of your entire system will almost certainly improve as a result
of the cleaner mains supply.
AKTIV* operation
All AKURATE power amplifiers support AKTIV operation.
Standard 'passive' crossovers are driven by the audio signal itself and
so some of the signal is effectively lost. AKTIV crossovers are
powered by the SMPS (see opposite) and therefore much more of the
audio signal is delivered to the loudspeaker. They are also able to
exert a much greater degree of control over the signal and these
qualities combine to provide a significant improvement in sonic
performance over standard operation.
Your authorised Linn retailer can carry out the AKTIV conversion of
any AKURATE amplifier channel with the insertion of a specially
designed Linn AKTIV module.
Protection
Over-current protection
If the output current goes above the amplifier's designated safe
operating level, the affected channels shut down instantly for a few
seconds in order to protect themselves and the loudspeaker drive
units to which they are connected.
Over-temperature protection
Similarly, if the amplifier's temperature rises above its safe operating
limit, the affected channels will cease operation until the temperature
drops to a safe level and will then automatically resume.
Also, SMPS does not emit distortion into the local mains supply, as
conventional large power supplies tend to do and if you upgrade from
an amplifier with a conventional power supply to the AKURATE
2AKURATE 2200•3200•4200
* The term 'AKTIV' refers to the proprietary Linn active modules and
loudspeaker configuration.
Page 11
Installation
Important:
It is strongly recommended that your AKURATE amplifier is installed
and configured by an authorised Linn retailer.
Unpacking
Each AKURATE power amplifier is supplied with the following
accessories:
• mains lead
• interconnect cables - cable type will suit amplifier's input
connection (balanced or phono), one cable per amplifier channel
(e.g. 4-channel amplifier will receive 4 cables)
• warranty card
• this manual
Positioning
Ventilation requirements
Despite the efficiency of the design, your AKURATE amplifier still
requires to dissipate considerable power in the form of heat. It should
therefore be sited in a position that does not restrict the airflow
around it.
For best results:
• The unit should be placed on a flat, stable and rigid surface.
• Allow at least 4" (10 cm) free space above and at each side of
the unit.
• If the unit is sited in a cabinet, air must be able to flow through
from front-to-back. An enclosed cabinet will severely restrict
heat dissipation.
• Ensure that nothing is placed above or below the amplifier that
might block or restrict the vents.
• Do not place anything directly in front of the amplifier.
MIN 4” (10 cm)
MIN 4” (10 cm)
MIN 4” (10 cm)
ENGLISH
AIR FLOW
If the AKURATE amplifier has inadequate ventilation and/or is played
very enthusiastically for a period of time, its temperature may rise
above the designated operating level and the affected channels will
shut down until they have cooled sufficiently.
Other devices
Ideally, your AKURATE amplifier should not be located directly above
or adjacent to other heat-producing products such as radiators, other
power amplifiers etc. If multiple amplifiers are being used and space is
restricted, placing them side by side is preferable to stacking.
As with all hi-fi equipment, it is advisable to site your AKURATE
amplifier away from (and if possible connected to a power socket on a
different circuit from) powerful electrical or electronic products such as
TV sets, computers, cookers, fridges etc. This will prevent the
possibility of the strong electrical and electromagnetic emissions or
interference given off by such devices adversely affecting the
performance of your amplifier.
3AKURATE 2200•3200•4200
Page 12
ENGLISH
Connecting
Connecting to the mains supply
The unit can be connected to any worldwide mains voltage with no
adjustment. It incorporates Automatic Voltage Selection (AVS) and the
power supply automatically adjusts for the incoming mains supply.
This unit must be earthed. Use the earthed moulded mains lead
supplied. Never use an unearthed plug or adaptor.
Back panel connectors and switches
1
Speaker outputs
Amplified output for connection to loudspeakers.
2
GAIN
For increasing or reducing the gain.
IImmppoorrttaanntt
Only for use when a Linn AKTIV module is fitted to the channel.
If no AKTIV module is fitted, always leave set to 3 (default gain
setting). If an AKTIV module is fitted, this adjustment can be
used to finely tune the AKTIV system to match the room
acoustics.
3
AUDIO IN
For connection to the incoming audio signal.
4
AUDIO OUT
Allows the AUDIO IN signal to be relayed to another amplifier
channel or another device (e.g. subwoofer).
For balanced models, due to space restrictions on the back
panel, AUDIO OUT is not available on all channels.
5
Power switch
For switching the power to the amplifier on and off. Note - this is
not a standby switch but cuts the mains supply to the unit.
6
MAINS INPUT
See Connecting to the mains supply opposite.
Please see following pages for back panel diagrams showing
connectors and switches.
:
4AKURATE 2200•3200•4200
Page 13
Back panels (Phono)
Notes:
The connections and adjustments indicated by numbers 1 to 4 are repeated for each channel. See Back panel connectors and switches (page 4)
for further details.
1
234
Left side as above - additional channels shown below
3200
5
6
Left side as above - additional channels shown below
2200
ENGLISH
4200
5AKURATE 2200•3200•4200
Page 14
Back panels (Balanced)
Notes:
The connections and adjustments indicated by numbers 1 to 3 are repeated for each channel. See Back panel connectors and switches (page 4)
for further details.
ENGLISH
2436
Left side as above - additional channels shown below
6AKURATE 2200•3200•4200
15
3200B
Left side as above - additional channels shown below
2200B
4200B
Page 15
Audio connections
Connect each channel as shown.
Phono models
To loudspeaker’s
positive (+) or red
connection
CHANNEL 1
SPEAKER
To loudspeaker’s
negative (-) or black
connection
Balanced interconnect cable
For the balanced audio connection, we recommend the use of the
lead supplied or an interconnect lead with its connections configured
to match with the AKURATE amplifier connections as shown below.
Pin 2 - Hot
Pin 1 - Shield
Pin 3 - Cold
ENGLISH
From pre-amplifier or
AV system controller
Balanced models
GAIN
M
U
T
E
To loudspeaker’s
positive (+) or red
connection
From pre-amplifier or
AV system controller
CHANNEL 1
AUDIO
GAIN
M
U
T
E
IN
OUT
Optional - can be used to relay the audio in signal
to another power amplifier channel
or other audio device (eg. subwoofer)
To loudspeaker’s
negative (-) or black
CHANNEL 2
AUDIO OUT
connection
Optional - can be used to relay the audio in signal to
another power amplifier channel or other audio device
PUSH
CHANNEL 2
AUDIO IN
CHANNEL 2
SPEAKER
(eg. subwoofer)
7AKURATE 2200•3200•4200
Page 16
ENGLISH
Speaker terminals
The binding post terminals can be used as sockets for the
connection of 4 mm banana plugs or can be used as
binding posts for the connection of bare wires or spade
terminated cables by loosening the outer section of the
binding post (do not attempt to completely remove this
outer section), inserting the cable or terminal and
re-tightening the binding post to clamp it in place.
Ensure that all the binding posts are tight.
Banana
plug
Spade terminated
cable
Bare wire
connection
8AKURATE 2200•3200•4200
Page 17
Operation
General
The blue LED on the front panel will be dim when power is first
applied and will remain dimmed when the amplifier is in standby
mode.
Signal sensing
When an input signal is detected, the AKURATE amplifier is enabled
and the LED brightens. In the absence of an audio signal, the amplifier
reverts to a low power standby mode after approximately 20 minutes.
The signal detector is quite sensitive and if there is noise in your
system, such as hum or hiss, it could trigger the detector. If this
occurs, try to eliminate the source of the noise.
Protection
Operation
If an amplifier channel overheats or detects an overload condition, the
power supply for that channel will shut down in order to protect the
amplifier and the loudspeaker drive unit(s) to which it is connected.
Please note: all channels that are powered by that same power supply
will also shutdown so more than one channel may be affected.
Duration
Once the condition that caused the amplifier to activate its protection
has passed, the amplifier will automatically resume normal operation.
How long the channels remain in protection will depend on the cause.
If the protection operates for more than a few seconds, it could
indicate overheating which may take some minutes of cooling to
rectify.
A lengthier delay (10 minutes or more) could indicate a persistent
overload condition (e.g. one of the units connected to the amplifier is
faulty). Try switching the amplifier off at the mains for 30 minutes or so
and try again. If it remains non-operational, consult your retailer who
can examine your system and determine the source of the problem.
ENGLISH
ENGLISH
9AKURATE 2200•3200•4200
Page 18
Technical Specifications
Model
Type
Dimensions
Weight
Input connectors
ENGLISH
(Phono models)
Input connectors
(Balanced models)
Output connectors
Fuse rating
Mains input range
Mains frequency range
Input power maximum
(continuous)
Input power - standby
Gain (Phono models).
Adjustable for AKTIV (dB)
Gain (Balanced models).
Adjustable for AKTIV (dB)
Input impedance
Input level for clipping
(Phono models)
Input level for clipping
(Balanced models)
Harmonic distortion
Maximum output power
(per channel)
Load tolerance
Frequency response
Peak output voltage
* Default setting
10 AKURATE 2200•3200•4200
2200
Two-channel power amplifier
W 381 mm, D 355 mm, H 80 mm
W 15", D 14 ", H 3 "
5.8 kg / 12.7 lbs
RCA phono
XLR
4 mm banana / binding post
250 V, T10 A
AC 100-120 V; AC 220-240 V
50 - 60 Hz
300 W
16 W (Phono); 17.5 W (XLR)
25.6, 26.6, 27.6, 28.6*, 29.6, 30.6, 31.6, 32.6
19.6, 20.6, 21.6, 22.6*, 23.6, 24.6, 25.6, 26.6
7.5 K
1.1 V rms
2.2 V rms
< 0.005 %
200 W rms into 4
111 W rms into 8 Ω
Unconditionally stable into all loudspeaker loads
1.4 Hz to 41 kHz
41 V
1
1
/
/
8
8
Ω (phono); 7.8 K Ω (XLR)
Ω
3200
Three-channel power amplifier
W 381 mm, D 355 mm, H 80 mm
W 15", D 14 ", H 3 "
6.6 kg / 14.5 lbs
RCA phono
XLR
4 mm banana / binding post
250 V, T10 A
AC 100-120 V; AC 220-240 V
50 - 60 Hz
300 W
19 W (Phono); 19.5 W (XLR)
25.6, 26.6, 27.6, 28.6*, 29.6, 30.6, 31.6, 32.6
19.6, 20.6, 21.6, 22.6*, 23.6, 24.6, 25.6, 26.6
7.5 K
1.1 V rms
2.2 V rms
< 0.005 %
200 W rms into 4
111 W rms into 8 Ω
Unconditionally stable into all loudspeaker loads
1.4 Hz to 41 kHz
41 V
1
1
/
/
8
8
Ω (phono); 7.8 K Ω (XLR)
Ω
4200
Four-channel power amplifier
W 381 mm, D 355 mm, H 80 mm
W 15", D 14 ", H 3 "
6.9 kg / 15.2 lbs
RCA phono
XLR
4 mm banana / binding post
250 V, T10 A
AC 100-120 V; AC 220-240 V
50 - 60 Hz
300 W
20 W (Phono); 22 W (XLR)
25.6, 26.6, 27.6, 28.6*, 29.6, 30.6, 31.6, 32.6
19.6, 20.6, 21.6, 22.6*, 23.6, 24.6, 25.6, 26.6
7.5 K
1.1 V rms
2.2 V rms
< 0.005 %
200 W rms into 4
111 W rms into 8 Ω
Unconditionally stable into all loudspeaker loads
1.4 Hz to 41 kHz
41 V
1
1
/
/
8
8
Ω (phono); 7.8 K Ω (XLR)
Ω
ENGLISH
Page 19
Guarantee and Service
This product is guaranteed under the conditions which apply in the
country of purchase and your statutory rights are not limited. In
addition to any statutory rights you may have, Linn undertake to
replace any parts which have failed due to faulty manufacture. To help
us, please ask your Linn retailer about the Linn warranty scheme in
operation in your country.
Linn Products Limited
Glasgow Road
Waterfoot
Eaglesham
Glasgow G76 0EQ
Scotland, UK
In parts of Europe, the United States of America and some other
markets, extended warranty may be available to customers who
register their purchase with Linn. A warranty registration card is
included with the product and should be returned to Linn as soon as
possible. Alternatively, you can register your warranty online at
www.linn.co.uk.
Warning
Unauthorised servicing or dismantling of the product invalidates the
manufacturer's warranty. There are no user serviceable parts inside
the product and all enquiries relating to product servicing should be
referred to authorised retailers only.
Technical support and information
For technical support, product queries and information, please
contact either your local retailer or one of the Linn offices opposite.
Full details of your local retailer/distributor can be found on the Linn
web site: www.linn.co.uk.
Important
Please keep a copy of the sales receipt to verify the purchase
date of the product.
Please ensure that your equipment is insured by you during any
transit or shipment for repair.
The table below is provided to allow you to take a note of how your
amplifier channels are configured and/or connected.
AAKKTTIIVVmmoodduulleess
If your AKURATE amplifier is fitted with Linn AKTIV modules, labels
may be provided with the modules. Stick the label for each AKTIV
module in the table below the relevant channel number to allow you to
quickly and easily note the position of each module for future
reference.
Channel
Configuration
Gain setting
Channel
Configuration
Gain setting
12 AKURATE 2200•3200•4200
1234
1234
Page 21
Page 22
Pack 1322
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