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AKURATE Loudspeaker System
Owner’s Manual
English Important Safety Information
UK USERS PLEASE READ THIS
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.
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:
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:
a) Pull out the red fuse cover/carrier.
Standard number
EN60065
Date of issue
2002
Test type
General requirements
b) Remove and dispose of the blown fuse.
Marking
Hazardous radiation
Heating under normal conditions
Shock hazards under normal
operating conditions
c) Fit a new 5 Amp BS1362 approved fuse into the carrier and push the carrier
back into the plug.
Insulation requirements
Fault conditions
Mechanical strength
Parts connected to the mains supply
Components
Terminal devices
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.
External flexible cords
Electrical connections and mechanical fixings
Protection against electric shock
Stability and mechanical hazards
Resistance to fire
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.
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:
b) Cut off the plug and dispose of it safely. A plug with bared conductors is
dangerous if engaged in a live socket.
Standard number
EN55013
EN55013
Date of issue
2001
2001
Test type
Conducted emissions
Absorbed emissions
Immunity
c) Only fit a 13 Amp BS1363A approved plug with a 5 Amp fuse.
EN55020
2002
d) The cable wire colours or a letter will be marked at the connection points of most
quality plugs.
FCC notice
NOTE:
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.
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:
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.
● 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.
AKURATE Loudspeaker System
Owner’s Manual
ii
Copyright and Acknowledgements English
Copyright and Acknowledgements
Copyright © 2003 Linn Products Ltd. First edition July 2003.
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 means, electronic, mechanical,
photocopying, recording, or otherwise, without the prior written permission of the
publisher.
Printed in the United Kingdom.
Trade marks used in this publication: Linn and the Linn logo are registered trade marks
of Linn Products Limited. AKURATE*, AKTIV, SEKRIT and SKEETS are trade marks of
Linn Products Limited.
The information in this manual is furnished for informational 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.
* Patent pending
AKURATE Loudspeaker System
Owner’s Manual
iii
Contents English
Contents
AKURATE 221
Unpacking
9
9
Introduction
The AKURATE system
Features
1
1
Voltage selection
Positioning
Fabric grille
Cleaning
9
2
9
9
AKURATE 242, 225 and 212
Unpacking
3
3
3
3
4
6
9
Connecting
Operation
10
11
Fabric grilles
Cleaning
Operating modes
Parameters
11
11
Positioning and levelling
Connecting
Technical Specifications
Guarantee and Service
13
14
General
6
7
7
7
7
7
8
Single-wiring
Bi-wiring or bi-amping
Tri-wiring or tri-amping
Important notes on using the link strips
Quad-amping and beyond
Bass Boost
AKTIV operation
8
AKURATE Loudspeaker System
Owner’s Manual
Introduction English
The AKURATE system
Introduction
AKURATE 242 – A five-way, bass reflex, floorstanding loudspeaker, precision
engineered for use in medium to large sized listening areas. The AKURATE 242
speaker incorporates dual 6 1/2” (16.5 cm) drivers mounted vertically for
controlled, tuneful and extended bass performance.
At Linn, we recognise that the way people access sound is changing.
Entertainment systems are becoming ever more integrated and the line
between music and movie systems is no longer clear. As the popularity of new
and improved hi-resolution music formats increases, multi-channel systems are
no longer for the movie enthusiast only.
AKURATE 212 – A compact, high-performance, four-way, bass reflex, bookshelf
loudspeaker. It features a single 6 1/2” (16.5 cm) bass driver and is designed for
use as a main speaker in smaller rooms or surround channel effects
applications. A custom designed stand is available for this model to allow
positioning for optimum performance.
As we change the way we access sound, the equipment we use to relay that
sound must also change. A modern loudspeaker must offer greater levels of
flexibility, reproduce a wider range of sounds and playback at a higher
resolution to truly communicate the full potential of the system. The
loudspeaker communicating the awesome force of an explosion in a movie
blockbuster must be subtle enough to replay the tone and emotion of the
softest female jazz vocal.
AKURATE 225 – A centre channel loudspeaker designed primarily to match the
AKURATE 242 speakers. The AKURATE 225 speaker uses the same drive unit
complement as the AKURATE 242 speaker and has been tolerance-matched to
the other AKURATE loudspeakers to allow seamless system integration. A
custom designed stand is available for this model to allow positioning for
optimum performance.
With this in mind, Linn presents AKURATE - a system of complementary
loudspeakers, visually and sonically designed to achieve seamless multi-channel
performance.
AKURATE 221 – Bass extension in the AKURATE system is provided by the
powered 221 subwoofer. The unit is driven by a 500 W power amplifier and
features an 8” (20.3 cm) servo-controlled driver in a 21-litre enclosure for pure,
precise bass response.
AKURATE Loudspeaker System
Owner’s Manual
1
English Introduction
Features
AKURATE 221
New 500S Amplifier Module
The AKURATE 221 bass extension loudspeaker
AKURATE 242, 225 and 212
utilises 500 watts of servo-assisted Linn silent power. The bass drive unit is
constantly monitored and regulated to maintain accurate, extended bass in any
listening environment.
Linn 3-K Driver Array (patent pending) Linn designed and engineered drive unit
array delivers optimised dispersion and high frequency performance. Provides
open and natural presentation and clear, precise dialogue and effects. All
components used in the 3-K Array are matched to a close tolerance, retaining
sonic purity and consistency throughout.
Entire System
SEKRIT-Fastener Invisible, flush-fitting, speaker grille technology.
Unique Linn Loudspeaker Configuration System Input connector system enabling
passive multi-wiring/amplifier operation and a simple, clear upgrade path to an
active system. You can begin with a complete, high quality, passive loudspeaker
system and achieve performance enhancements through easy upgrade to full
active operation.
Magnetic Shielding To avoid magnetic interference with other household
products such as a television or a mobile communications device, all of the
loudspeakers within the AKURATE system are magnetically shielded.
1
/
High Quality 6 2” (16.5 cm) Sandwich-Cone Bass Drive Units Layered cone design
delivers pitch accurate, musical, bass extension.
AKURATE 242 and 225
Bass Extension Feature Allows calibrated tailoring of the bass response to suit
room acoustics or environment.
AKURATE 242 and 212
Acoustically Matched Double-Flared Ports Unique, mirrored “rifling” design
reduces turbulence and matches the impedance of internal cabinet volume with
the external environment.
AKURATE Loudspeaker System
Owner’s Manual
2
AKURATE 242, 225 and 212 English
The AKURATE 212 bookshelf speakers are supplied with the following
accessories:
AKURATE 242, 225 and 212
Unpacking
●
12 terminal link strips (four of which are factory fitted to the terminals);
4 x four-hole, 4 x three-hole, 4 x two-hole
4 speaker plugs
2 foam bungs
terminal collar tool
spike kit
warranty card
The AKURATE speakers are heavy; take care when removing them from their
packaging.
●
●
●
●
●
●
The AKURATE 242 floorstanding speakers are supplied with the following
accessories:
this manual
●
●
speaker stand kit
20 terminal link strips (four of which are factory fitted to the terminals);
We recommend that you retain the packaging in case you need to transport
your speaker(s) at a later date.
4 x five-hole, 4 x four-hole, 4 x three-hole, 8 x two-hole
●
●
●
●
●
●
4 speaker plugs
4 foam bungs
terminal collar tool
spike adjustment tool
warranty card
3-K Array cover
To remove the protective cover from the 3-K Array, carefully cut through the
two cable ties. The cover should come away easily.
this manual
Fabric grilles
The AKURATE 225 centre speaker is supplied with the following accessories:
The AKURATE 242, 225 and 212 speakers are supplied with fabric grilles. The
grilles are held in place by SEKRIT-Fasteners (shielded magnets hidden within
the cabinets). Grilles can easily be removed by sliding them downwards (away
from the magnets) and gently pulling them towards you.
●
10 terminal link strips (two of which are factory fitted to the terminals);
2 x five-hole, 2 x four-hole, 2 x three-hole, 4 x two-hole
●
●
●
●
●
2 speaker plugs
terminal collar tool
spike kit
warranty card
this manual
IMPORTANT:
Do not attempt to remove the metal grilles covering the drivers.
Cleaning
Remove dust and fingerprints from the cabinets with a soft, dry, lint-free cloth.
Avoid using domestic cleaning products as they may damage the veneer.
The grilles should be removed from the cabinets and cleaned carefully with a
soft brush.
AKURATE Loudspeaker System
Owner’s Manual
3
English AKURATE 242, 225 and 212
Positioning and levelling
To get the best from your Linn AKURATE speakers, it is important that they are
positioned and levelled correctly. The acoustics of a room are dependent on
many factors including size, shape and even furniture. The information below
will assist in helping you find the best position in your room for your speakers
and will tell you how to level them correctly.
Positioning
It pays dividends to experiment with loudspeaker positioning. However, the very
nature of the 3-K Array and its close driver proximity ensures uniform
dispersion characteristics and therefore should not require any significant
degree of toeing-in to improve performance.
A loudspeaker placed too close to a wall will tend to affect bass definition
creating a bass ‘bloom’, so a minimum of 9” (23 cm) is recommended between
the back of a speaker and the closest wall. If lack of space is an issue, foam
bungs are provided for insertion into the AKURATE 242 and 212 speakers’ rear
reflex ports to seal the cabinets. This converts the speakers to an infinite baffle
design and allows them to be placed closer to a wall. The AKURATE speaker
system will work effectively in free space, but if bass extension is limited the
AKURATE 242 and 225 speakers contain a Bass Boost feature to enhance the
bass frequencies below 200 Hz (see Bass Boost section).
min. 9" (23 cm)
min. 9" (23 cm)
Centre
min. 9" (23 cm)
Subwoofer
AKURATE Loudspeaker System
Owner’s Manual
4
AKURATE 242, 225 and 212 English
●
●
●
Press down firmly on the top of the speaker to ensure it is in close
contact with your flooring.
Levelling
Use the spirit level as before and continue to adjust the spikes as
required.
All components in the AKURATE speaker system benefit from levelling, which
produces distinct improvements in soundstage and accuracy. A properly
levelled loudspeaker will always perform more effectively than an unstable one.
The actual loudspeaker cabinet can remain fixed whilst the drive units are
allowed to move as precisely determined by the playback signal from the
amplifier. Adjustable spikes or feet enable levelling on uneven floors, however
these adjustments are subtle and will not compensate for excessively irregular
floors.
When the speaker is level and does not rock, use the screwdriver to hold
the spikes in place and tighten the lock nuts using the tool provided (3).
(3)
Spikes are supplied with the AKURATE 242 speakers and the stand for the
AKURATE 225 and 212 speakers.
The procedure for levelling each speaker should be as follows:
●
Use a spirit level on the top of the speaker to check if it is sitting level. If
it is, gently rock the speaker from front to back, side to side and
diagonally to check for any movement. If none is present and the speaker
is sitting level, no adjustment to the spikes is necessary.
Note:
●
If the speaker is not level, or moves when you rock it, loosen the
appropriate lock nuts using the tool provided (1) and use a screwdriver to
turn the spikes to adjust their height (2).
To protect wooden or tiled floors the spikes can be placed on Linn SKEETS
which are available from your Linn retailer.
(2)
(1)
AKURATE Loudspeaker System
Owner’s Manual
5
English AKURATE 242, 225 and 212
To remove/fit the link strips:
Connecting
●
●
Carefully remove the blanking plugs that are in the terminals, using a thin
blade.
General
IMPORTANT:
Use the supplied tool to unscrew the terminal collars.
Before making any connections, switch off your power amplifier(s).
Ensure the positive (+) or red coloured connectors from your amplifier(s),
connect to the positive (+) connectors on your loudspeaker(s). And that the
negative (-) or black coloured connectors from your amplifier(s), connect to the
negative (-) connectors on your loudspeaker(s).
AKURATE 242 and 225
The AKURATE 242 and 225 speakers are supplied with several terminal link
strips. These strips can be connected to the terminals on the back of the
speakers to provide a wide variety of amplifier-speaker connection
configurations. The links connect two, three, four or five terminals together
allowing for single-wiring, bi-wiring, tri-wiring, or connection to up to five
separate power amplifier channels. The speakers are supplied from the factory
with the five-hole link strips attached.
●
●
●
Remove/fit the required link strips.
Replace all the terminal collars, making sure they are tightly secured.
Replace the blanking plugs.
AKURATE 212
The AKURATE 212 speaker is supplied with several link strips. These strips can
be connected to the terminals on the back of the speaker to provide a wide
variety of amplifier-speaker connection configurations. The links connect two,
three or four terminals together allowing for single-wiring, bi-wiring, tri-wiring
or connection to up to four separate power amplifier channels. The speakers are
supplied from the factory with the four-hole link strips attached.
AKURATE Loudspeaker System
Owner’s Manual
6
AKURATE 242, 225 and 212 English
Single-wiring
Tri-wiring or tri-amping
Position of link strips if single-wiring (i.e. using a single pair of cables from one
stereo power amplifier).
Suggested position of link strips if tri-wiring (i.e. using three pairs of cables
from one power amplifier) or tri-amping (i.e. using one pair of cables from each
of three power amplifier channels).
Output from
power amplifier
can be
Output from
Output from
connected to
power amplifier
either of the
Output from
two terminals.
ACTIVE
power amplifier
can be
BASS
MID
TWEETER
SUPER TWEETE
ACTIVE
power amplifier
can be
connected to
either of the
two terminals.
can be
ACTIVE
connected to
any of the four
terminals.
connected to
any of the five
terminals.
BASS
MID
TWEETER
SUPER TWEETER
ACTIVE
Output from
power amplifier
can be
connected to
either of the
two terminals.
AKURATE 212
AKURATE 242 and 225
AKURATE 242 and 225
AKURATE 212
Bi-wiring or bi-amping
Important notes on using the link strips
Suggested position of link strips if bi-wiring (i.e. using two pairs of cables from
one power amplifier) or bi-amping (i.e. using one pair of cables from each of two
power amplifier channels).
The above configurations are only suggestions; many others are possible. If you
are trying other setups please bear in mind the following points.
●
●
●
Never use the strips to link positive (+) and minus (-) terminals together.
Don’t connect more than one strip per terminal.
Output from
power amplifier
can be
Bass quality will be impaired if you link LOWER BASS and BASS BOOST
together or UPPER BASS, LOWER BASS and BASS BOOST together.
connected to
any of the three
terminals.
Output from
power amplifier
can be
ACTIVE
BASS
MID
TWEETER
SUPER TWEETER
ACTIVE
connected to
any of the three
terminals.
Quad-amping and beyond
Output from
power amplifier
can be
Improved audio quality can be obtained by connecting separate power
amplifiers to each pair of speaker terminals (bar the BASS BOOST terminals,
see next page). However, for the best audio performance your AV/hi-fi system
should be converted from running passively to running actively (see AKTIV
operation section).
connected to
either of the
two terminals.
AKURATE 242 and 225
AKURATE 212
AKURATE Loudspeaker System
Owner’s Manual
7
English AKURATE 242, 225 and 212
Bass Boost (AKURATE 242 and 225 only)
AKTIV operation
The AKURATE 242, 225 and 212 speakers can be either passively or actively
driven. In a passive system, the output from a power amplifier is passed
through the crossovers housed in the loudspeakers. This results in a certain
loss of audio signal as some of the energy in the signal is absorbed by the
crossover circuitry. In an active system, or in Linn terms - AKTIV system, the
crossover circuitry is placed before the power amplifier instead. After passing
through the crossover, the signal is amplified and sent to the drive units in the
speaker, bypassing the speaker’s crossover and therefore not losing that bit of
energy. This results in significantly improved audio performance.
Depending on the position of the speakers in your room, or room acoustics, you
may wish to boost the lower bass frequencies (those under 200 Hz). This is
done by connecting the output from a power amplifier to the BASS BOOST
terminals on the rear panel.
If you are bi-wiring Fit the four-hole link strips to the top four positive (+) and
minus (–) terminals. Connect one pair of speaker cables from the amplifier to
the linked terminals and the other pair to the BASS BOOST terminals.
If you are bi-amping Fit the three-hole link strips to the top three positive (+)
and minus (–) terminals. Connect one pair of speaker cables from one amplifier
channel to the linked terminals, and bi-wire from the second amplifier channel
to the UPPER BASS and BASS BOOST terminals.
AKURATE speakers are shipped in a passive configuration. If you wish to run
your speakers actively, you must have one Linn power amplifier channel for
each drive unit in the speakers and each amplifier must be fitted with the
correct AKTIV crossovers (contact your Linn retailer for further information).
The last step is to convert your AKURATE speakers from passive to active.
Your Linn retailer will do this for you.
If you are tri-wiring Fit the three-hole link strips to the top three positive (+)
and minus (–) terminals. Connect one pair of speaker cables from the amplifier
to the linked terminals, a further pair to the UPPER BASS terminals and the
remaining pair to the BASS BOOST terminals.
The Bass Boost feature (see left) is not available if a speaker is being actively
driven.
Note:
If you are tri-amping Fit the two-hole link strips to the top two positive (+) and
minus (–) terminals. Connect a pair of speaker cables from one amplifier
channel to the linked terminals, a pair from another amplifier channel to the
MID terminals and bi-wire from the remaining amplifier channel to the UPPER
BASS and BASS BOOST terminals.
The AKURATE 242, 225 and 212 speakers can be driven partially active, i.e.
either the 3-K Array or the bass driver(s) can be actively driven.
IMPORTANT NOTES ON AKTIV SYSTEMS
Do not use your amplifiers with any other loudspeakers – you may damage the
loudspeakers.
Note:
If you are using four or five amplifier channels per speaker you do not need to
use any of the link strips.
Do not use your loudspeakers with any other amplifiers – their internal
crossovers will be bypassed and the drivers could be severely damaged.
Do not use the terminal link strips
– they can only be used in a passive system.
AKURATE Loudspeaker System
Owner’s Manual
8
AKURATE 221 English
Positioning
AKURATE 221
The AKURATE 221 speaker can be placed anywhere you find convenient but
please consider the following points:
Unpacking
The AKURATE 221 bass reinforcement speaker is heavy: take care when
removing it from its packaging.
●
●
●
●
The AKURATE 221 speaker is best suited to be positioned on a floor, not
a table, shelf etc. It is heavy and must be stably supported.
For best results, position your AKURATE 221 speaker as close as
possible to either your left front or right front speaker.
The AKURATE 221 speaker is supplied with the following accessories:
Bass notes will be accentuated if the AKURATE 221 speaker is positioned
close to a wall or in a corner.
●
●
●
●
mains lead
phono lead
warranty card
this manual
Experimenting with the position may be necessary in order to match the
sound of the AKURATE 221 speaker with other speakers in your system
and the acoustics of the room.
We recommend that you retain the packaging in case you need to transport the
AKURATE 221 speaker at a later date.
Fabric grille
The AKURATE 221 is supplied with a fabric grille. This grille is held in place by
SEKRIT-Fasteners (shielded magnets hidden within the cabinet). The grille can
easily be removed by sliding it downwards (away from the magnets) and gently
pulling it towards you.
Voltage selection
Voltage selection is not needed. Your AKURATE 221 is factory set to operate
from your local mains supply. The mains lead supplied may be fitted with a fused
plug according to local regulations. If this is the case, always replace this fuse
with another of the same type and rating.
IMPORTANT:
Do not attempt to remove the metal grille covering the driver.
This unit must be earthed. Use the earthed mains lead supplied.
Never use an unearthed plug or adaptor.
Cleaning
Disconnect the AKURATE 221 speaker from the power supply before cleaning.
Remove dust and fingerprints from the cabinet with a soft, dry, lint-free cloth.
Avoid using domestic cleaning products on the cabinet as they may damage
the veneer.
AKURATE Loudspeaker System
Owner’s Manual
9
English AKURATE 221
Connecting to a stereo pre-amplifier and power amplifier if used
with ‘small’ (limited bass response) speakers.
Connecting
Connect the AKURATE 221 speaker to a mains supply using the mains lead
provided.
TO POWER AMPLIFIER
HP OUT
IMPORTANT:
Do not turn on the mains supply until you have connected all other
components.
AL OUT
A IN
Connecting to a Linn System Controller or other
AV processor
HP OUT
FROM STEREO PRE-AMP
Note:
In the above configuration the AKURATE 221 speaker is being used to stop
low bass notes from being sent to the main speakers.
FROM LINN SYSTEM CONTROLLER
OR OTHER AV PROCESSOR
AL OUT
A IN
Connecting to another AKURATE 221 speaker
AKURATE 221 - ONE
AKURATE 221 - ONE
HP OUT
HP OUT
Connecting to a stereo pre-amplifier if used with large (full-range
frequency response) speakers, for example AKURATE 242 or 212 speakers.
AL OUT
A IN
AL OUT
A IN
HP OUT
FROM
STEREO
PRE-AMP
FROM
STEREO
PRE-AMP
FROM LINN SYSTEM
CONTROLLER
OR OTHER
AV PROCESSOR
OR
AKURATE 221 - TWO
AKURATE 221 - TWO
HP OUT
HP OUT
AL OUT
A IN
FROM STEREO PRE-AMP
AL OUT
A IN
AL OUT
A IN
AKURATE Loudspeaker System
Owner’s Manual
10
AKURATE 221 English
Parameters
Operation
The AKURATE 221 speaker is equipped with seven adjustable parameters (see
next page) that enable you to alter its performance to suit your taste.
When you have made all the required connections, switch on the mains supply.
Flashing bars will be shown on the back panel display for approximately 30
seconds. During this time the speaker’s servo circuitry is stabilising and no
audio will be issued. When the display changes to show the standby symbol (see
table below), the speaker is ready to receive an audio signal.
Note:
The parameters can only be adjusted when the AKURATE 221 speaker is not in
standby mode.
Whenever the AKURATE 221 speaker is disconnected from the mains supply
and then reconnected, wait until the standby symbol appears on the display
before playing a disc.
Adjusting the parameters
To select the parameter you wish to adjust:
●
●
Hold FEATURE.
Operating modes
Repeatedly press UP or DOWN until the letter for the desired parameter
appears.
Key to symbols
●
●
Release FEATURE.
SYMBOL MODE
Standby
MEANING
Repeatedly press UP or DOWN to change the setting.
The unit is waiting for an audio signal
In this mode the unit consumes minimal
power.
HP OUT
AL OUT
A
IN
On
The unit is fully powered-up
The unit will enter this mode as soon as it
receives an audio signal.
A few seconds after the last key press the display
changes to
Thermal Standby The unit has overheated
During very demanding, sustained use the
-
unit will go into Thermal Standby mode in
order to allow itself to cool down. When in
this mode the unit will not produce any
sound. The unit will return to On mode
when its temperature has dropped to its
operating level.
To restore the default settings:
●
Disconnect the AKURATE 221 speaker from the mains supply and wait for
the display to go blank.
●
●
While holding FEATURE reconnect the mains supply.
Continue to hold FEATURE until the display shows
H
FEATURE
A few seconds after releasing
the display changes to
-
AKURATE Loudspeaker System
Owner’s Manual
11
English AKURATE 221
Description and available settings for parameters
Default settings are shown in grey.
PARAMETER
SYMBOL 0
1
2
3
4 5
6
7
8
9
PARAMETER
SYMBOL 0
1
2
3
4 5
6
7
8
9
External high pass
frequency*
Coarse gain
Every one step
Increasing the setting
reduces the bass
content sent to the
external speakers. (Hz)
increase in the setting
raises the gain (volume)
of the speaker by
5 decibels. Every one
step decrease in the
setting lowers the gain
(volume) of the
10 50 75 100 115 135 160 190 235
-15 -10 -5
0
+5 +10 +15
Internal high pass
frequency
Increasing the setting
raises the lowest
frequency produced
by the unit. (Hz)
speaker by
5 decibels. (dB)
18 22 25 30 34 40
Fine gain
Every one step
increase in the setting
raises the gain
(volume) of the
loudspeaker by
1 decibel. (dB)
Internal low pass
frequency**
Reducing the setting
lowers the highest
frequency produced by
the unit. (Hz)
0
0
+1 +2 +3 +4
55 85 130
Bass equalisation
Every one step
increase in the setting
applies an additional
3 dBs at 30 Hz and
below. (dB@30 Hz)
+3 +6
* Only for use when the AKURATE 221 speaker is connected to a power amplifier
(see Connecting section in this chapter).
** If you are using the AKURATE 221 speaker with a Linn System Controller
or other AV processor, set to 4 (No filtering).
Time out
Length of time before
unit will go into
5
10 20
standby after audio
input ceases. (mins)
AKURATE Loudspeaker System
Owner’s Manual
12
Technical Specifications English
Technical Specifications
AKURATE 242
5-way floorstander
AKURATE 225
AKURATE 212
4-way bookshelf
AKURATE 221
Type
5-way centre
Type
1-way bass reinforcement
Drive units
13 mm / 25 mm /
75 mm domes,
2 x 165 mm bass units
13 mm / 25 mm /
75 mm domes,
2 x 165 mm bass units
13 mm / 25 mm /
75 mm domes,
1 x 165 mm bass unit
Drive unit
203 mm servo bass
Mains input voltage
100 V
Voltage range
90 - 110 V
Efficiency
87 dB for 1 watt at 1 m
(1 kHz)
87 dB for 1 watt at 1 m
(1 kHz)
87 dB for 1 watt at 1 m
(1 kHz)
115 V
103 - 126 V
230 V
207 - 253 V
Crossover
options
Passive / active
Passive / active
Passive / active
Mains supply frequency
Magnetic shielding
External frequency response
Internal frequency response
50 - 60 Hz
Yes
Frequency
response -
passive
49 Hz - 33 kHz
66 Hz - 33 kHz
70 Hz - 33 kHz
Adjustable from 10 Hz – 235 Hz in 9 steps. Default is 10 Hz.
Adjustable from 55 Hz – 130 Hz in 3 steps and flat (to allow external low
pass filtering). Default is 85 Hz.
Frequency
response -
active
40 Hz - 33 kHz
58 Hz - 33 kHz
50 Hz - 33 kHz
Lowest frequency response at
default settings
24 Hz @ -3 dB
Nominal
impedance -
passive
8
Ω
8
Ω
8
Ω
Gain
Adjustable in 1 dB steps
Line input impedance
Line output level
Output power
Operating volume
Dimensions
Weight
18 k
Ω
Impedance –
active (bass)
16
8
Ω
16
8
Ω
16
8
Ω
Electronically in parallel with line input
500 W RMS, 1000 W peak
21 litres
Impedance –
active (mid)
Ω
Ω
Ω
324 mm (H) x 324 mm (W) x 324 mm (D)
17 kg
Impedance –
active (tweeter)
6
4
Ω
Ω
6
4
Ω
Ω
6
4
Ω
Ω
Impedance –
active
(super-tweeter)
Finishes
Black Ash, Maple, Cherry, Rosenut
Crossover points
All 4th order Linkwitz
Riley at 225 Hz, 450 Hz,
3.6 kHz, 9.2 kHz
All 4th order Linkwitz
Riley at 225 Hz, 450 Hz,
3.6 kHz, 9.2 kHz
All 4th order Linkwitz
Riley at 450 Hz,
3.6 kHz, 9.2 kHz
Connection options Up to 5-way by wire
or amplifier
Up to 5-way by wire
or amplifier
Up to 4-way by wire
or amplifier
Magnetic shielding Yes
Yes
Yes
Operating volume
Dimensions
42 litres
25 litres
12 litres
1000 mm (H) x 210 mm
(W) x 380 mm (D)
250 mm (H) x 600 mm
(W) x 300 mm (D)
350 mm (H) x 210 mm
(W) x 300 mm (D)
Weight
32 kg
21 kg
12 kg
Finishes
Black Ash, Maple, Cherry,
Rosenut
Black Ash, Maple, Cherry,
Rosenut
Black Ash, Maple, Cherry,
Rosenut
AKURATE Loudspeaker System
Owner’s Manual
13
English Guarantee and Service
Guarantee and Service
Linn Products Limited
Glasgow Road
Waterfoot
Eaglesham
Glasgow G76 0EQ
Scotland, UK
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.
Phone:
Fax:
Helpline:
Email:
+44 (0)141 307 7777
+44 (0)141 644 4262
0500 888909
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 stamped by your retailer and returned to Linn as
soon as possible.
Website:
Linn Incorporated
8787 Perimeter Park Boulevard
Jacksonville
FL 32216
USA
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.
Phone:
Fax:
Helpline:
Email:
+1 (904) 645 5242
+1 (904) 645 7275
888-671-LINN
Website:
Technical support and information
Linn Deutschland GmbH
Albert-Einstein-Ring 19
22761 Hamburg
For technical support, product queries and information, please contact
either your local retailer or one of the Linn offices opposite.
Deutschland
Full details of your local retailer/distributor can be found on the Linn web
Phone:
Fax:
+49-(0) 40-890 660-0
+49-(0) 40-890 660-29
Email:
Website:
Important
●
●
Please keep a copy of the sales receipt to establish the purchase
date of the product.
Linn Japan
Kanda Northern Bldg. 4F,
6-1-4 Sotokanda,
Chiyoda-ku,
Tokyo 101-0021
Japan
Please ensure that your equipment is insured by you during any
transit or shipment for repair.
Phone:
Fax:
Helpline:
Email:
+813.5816.6881
+813.5816.6882
0120 126 173
Website:
AKURATE Loudspeaker System
Owner’s Manual
14
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