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Acoustic Energy Loudspeaker Radiance Sub User Manual

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    							Owners Man ual
    T H REE
    3 .   I n s t a l l a t i o n
    Thank you for purchasing this Acoustic Energy product. As a valued customer 
    we would like to keep you up to date with all news and events including new 
    products, exhibitions and exclusive promotions. To enable us to communicate 
    these exciting developments please go to our website - www.acoustic-energy.co.uk 
    - and complete the ownership registration form.
    Perhaps more than any other hi-fi product, speakers are sensitive to installation 
    so please take a little time to read this manual and to follow, as far as practical, 
    the installation guidelines it contains. Careful installation will help ensure that 
    your Aegis Neo Subwoofer performs optimally. Should you have any questions not 
    covered here we are happy to try and answer them either by telephone or email. 
    Contact information can be found in Section 10.
    The Aegis Neo Subwoofer is a relatively delicate 
    precision engineered product that can be damaged 
    by inappropriate handling. It is also large and heavy. 
    Please take great care therefore when unpacking or 
    moving it. Plan any handling in advance of carrying 
    it out - ideally with a second person to help. Please 
    take care when unpacking or moving the subwoofer 
    not to touch the driver. Damage to a driver will at best 
    degrade the Aegis Neo Subwoofer’s performance and 
    at worst result in its complete failure.
    The enclosure surfaces should also be handled 
    sympathetically. Any cleaning should only require a 
    soft cloth, slightly dampened if necessary. Do not use 
    any polishes or solvent based cleaning agents.
    The packaging should be retained for future use.
    1 .   I n t r o d u c t i o n
    2 .   H a n d l i n gImportant Safety Instructions
    Ensure that your Aegis Neo Subwoofer is set to the appropriate mains input voltage before it is connected to a mains socket. The warranty does not cover damage caused by incorrect mains voltage.
    1. Read these instructions.
    2. Keep these instructions.
    3. Heed all warnings.
    4. Follow all instructions.
    5. Do not use this apparatus near water.
    6. Clean only with dry cloth.
    7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
    8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
    9. Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong. 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.
    10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
    11. Only use attachments/accessories specified by the manufacturer.
    12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
    13. Unplug this apparatus during lightning storms or when unused for long periods of time.
    14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is 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.
    15. The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on the apparatus.
    16. The MAINS plug is used as the disconnect device, the disconnect device shall remain readily operable.
    17. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
    Following this introduction, the Manual is divided into 
    sections covering handling, installation, positioning, 
    connecting, controls and system setup, specifications, 
    matching products, warranty and contact information. 
    We recommend that you read at least the first six of 
    these sections carefully before installing and using 
    your Aegis Neo Subwoofer. We would also draw your 
    attention to the Important Safety Instructions on this 
    Finally, please enjoy your Aegis Neo Subwoofer, but 
    remember it is capable of generating high volume 
    levels of low frequency sound, so please also be 
    considerate of your neighbours. 
    3 .   I n s t a l l a t i o n
    The Aegis Neo Subwoofer is intended to be used in 
    either stereo audio music systems or multi-channel 
    audio-visual (home theatre) systems. Although it is 
    intended primarily to partner other products in the 
    Aegis Neo range it may also be used successfully with 
    alternative loudspeakers.
    The Aegis Neo Subwoofer should be fitted with either 
    floor spikes or rubber feet. Floor spikes offer the 
    highest potential performance and should be fitted 
    if the subwoofer is to be placed on a carpeted floor. 
    If spikes are inappropriate for your floor covering, 
    metal protection pads, coins for example, may be used 
    between the spike and the floor.
    Note: Damage to the drive unit may result if the Aegis 
    Neo Subwoofer is placed face down on the floor.
    The rubber feet or M8 floor spikes and lock-nuts 
    should be fitted to the underside of the subwoofer 
    once it has been moved near its final location. 
    Carefully lay the subwoofer on its side to gain access 
    to the tapped holes in the underside. If the rubber feet 
    are to be used, simply screw them into the tapped 
    holes and return the subwoofer to upright. If floor 
    spikes are to be used, screw a spike and lock-nut into 
    each hole leaving a length of spike extending beyond 
    the lock-nut so that when the subwoofer is upright the 
    lock-nuts will “float” just above the floor covering.
    1 .   I n t r o d u c t i o n
    2 .   H a n d l i n g
    Tighten three of the lock-nuts with a 3mm spanner leaving one lock-nut finger-
    tight to aid adjustment once the subwoofer is upright in its final position. Once the 
    final position has been established adjust the length of the loose spike so that the 
    subwoofer is vertical and does not rock. If the floor is particularly uneven it may be 
    necessary to loosen one of the tightened spikes to ensure that the subwoofer can 
    be levelled.
    Finally, tighten all loose lock-nuts. It may be necessary to re-adjust to minimise rock 
    once the subwoofer has settled on the floor. Take care when installing floor spikes. 
    They are sharp and can cause injury or pierce electrical cables.
    The Aegis Neo Subwoofer is not magnetically shielded and may cause picture 
    distortion if located too close to a CRT screen. Contact your dealer, installer or 
    Acoustic Energy for advice.
    4 .   P o s i t i o n i n g
    The position of the speakers in a home theatre installation will have great influence 
    over its performance. It is worth spending some time experimenting both with the 
    finer points of speaker positioning, as well as the larger scale issues of room layout. 
    Diagram One over the page illustrates an idealised general home theatre speaker 
    If you are already familiar with the characteristics of your room, and the way 
    speakers perform in it, you may already have a good feel for where to position your 
    Aegis Neo Subwoofer. However, installing any new component provides a good 
    opportunity to review an existing set-up and perhaps make improvements.
    In principle there is great freedom of position of a sub-woofer in a listening room. In 
    practice, however, the performance will be fundamentally influenced by the room 
    and position. Small changes of location, or of the acoustic character of items in the 
    immediate vicinity of the subwoofer, can significantly influence its performance.
    Initially choose a site for the Aegis Neo Subwoofer along one of the walls of the 
    listening room well away, but not equidistant, from the corners. It is not necessary 
    that the subwoofer be positioned along the same wall as the main speakers. Chose 
    a solid wall (rather than a partition) and keep the subwoofer clear of any large 
    resonant objects - furniture panels, heating radiators, etc.
    Don’t worry if, thanks to the architecture or layout of your room, it is not practical to 
    follow these guidelines exactly. The most important thing is to experiment with the 
    different options that are practical and find the best one.
    Once your Aegis Neo Subwoofer is working, and you begin to become familiar with 
    its performance, it is likely to be worthwhile experimenting a little more with its 
    positioning. For example, moving the Aegis Neo Subwoofer towards a room corner 
    will increase the level of low bass. This gain may however be at the expense of bass 
    definition and consistency over the listening area. 
    D i a g r a m   O n e6 .   C o n t r o l s   a n d   S y s t e m   S e t u p
    The Aegis Neo Subwoofer requires connection both to mains power and an 
    appropriate audio signal. The connection sockets are located on the back panel 
    illustrated opposite in Diagram Two. Leave the subwoofer switched-off at the 
    mains until all connections are made and ensure that the Volume Level control, 
    also located on the back panel, is turned fully anti-clockwise. Connecting your 
    Aegis Neo Subwoofer to an audio signal is a simple process, however, there are 
    some choices to be made concerning connection mode.
    Signal Input Connections
    Aegis Neo Subwoofer is fitted with an unfiltered mono AV Subwoofer Line Input 
    and a standard stereo pair of filtered Line Inputs.
    The AV Subwoofer Line Input is intended for connection to an audio-visual 
    processor LFE (low frequency effects) output. As the LFE output of audio-visual 
    processors is already low-pass filtered, the subwoofer’s crossover filter is bypassed 
    by the AV Subwoofer Line Input. The Crossover Frequency control has no effect on 
    signals connected to the AV Subwoofer Line Input. 
    The stereo Line Inputs are intended for connection to preamplifier or other similar 
    line outputs. The left and right inputs are combined to mono within the subwoofer.
    Connect to the input sockets using an appropriate RCA Phono connection cable. 
    Ensure that the cable is of good quality.
    Signal Output Connections
    RCA Phono Line Level signal output sockets are fitted to the Aegis Neo Subwoofer. 
    They carry an output signal identical to the input signal and may be used to 
    transfer the signal back to a power amplifier or to connect multiple subwoofers.
    Mains Connection
    After checking that the mains voltage specified on 
    the subwoofer rear panel is set correctly, connect 
    the subwoofer via its IEC mains input to a mains wall 
    socket. Use only the mains cable supplied with the 
    Left Front
    Viewing/listening position
    Right FrontCentre
    Left SurroundRight Surround
    Alternative or Extra Left Surround
    Alternative or Extra Right Surround
    5 .   C o n n e c t i n g
    Designed and Engineered byAcoustic Energey Ltd., EnglandMade in Malaysia
    S U B   W O O F E R200 Watt Active SubwooferSerial Number
    No user serviceable parts inside.Consult Owners Manual before use.Operate in accordance withManufacturer’s instructions.If in doubt refer to qualifi ed service personnel.Not suitable for wall mounting.
    POWER INPUT115-120/230-240V 50/60Hz 
    ATTENTIONRisque du choc electrique.Ne pas ouveré.
    CAUTIONRisk of electric shock.Do not open.
    FUSE230-240V : T1.6AL 250V115-120V : T3.15AL 250V
    D i a g r a m   T w o 
    Page 3
    D i a g r a m   O n e6 .   C o n t r o l s   a n d   S y s t e m   S e t u p
    Subwoofer Controls
    Accompanying the mains and signal input sockets on 
    the subwoofer connection panel are a Power switch, a 
    Volume Level control, a Crossover Frequency control, 
    a Phase control and Notch Frequency, Slope and 
    Level controls. Their functions are described in the 
    following paragraphs. Use of the controls to setup and 
    adjust the subwoofer is described in the System Setup 
    The power switch incorporates an automatic switch-
    on/off function. With the switch set to AUTO the 
    subwoofer will switch on automatically when an 
    audio signal is present. It will switch off again when 
    no signal has been present for around  0 minutes. 
    With ON selected the subwoofer remains switched-on 
    Note: There is a short delay between auto switch-on 
    and audible sound from the subwoofer.
    Volume Level 
    The level control adjusts the volume of the subwoofer 
    relative to the satellites. Begin with the level control 
    set to around 50%. Detailed subwoofer adjustment 
    guidelines can be found in the following paragraphs.
    Crossover Frequency 
    The crossover frequency control adjusts the upper frequency at which the 
    subwoofer output is filtered for the full-range speakers to take over. If the Aegis 
    Neo Subwoofer is to be used exclusively in an audio-visual system it should be 
    connected via the AV Subwoofer Line Input on which the Crossover Frequency 
    control is inoperative.
    If the Aegis Neo Subwoofer is to augment the low frequency performance of a pair 
    of full range speakers, the crossover frequency should be set to match their low 
    frequency roll-off frequency. The larger the speaker, the lower its low frequency 
    roll-off will be. Finding the optimal crossover frequency setting will require 
    experiment and adjustment, but reasonable initial values for different speaker 
    types are as follows:
    Large floor stand speaker (Aegis Neo 3):  45Hz
    Medium stand mount loudspeakers:  60Hz
    Small stand mount speakers (Aegis Neo  ): 80Hz
    Miniature satellite loudspeakers:  00Hz
    Subwoofer Phase 
    The phase control varies the subwoofer acoustic phase (timing) with respect to the 
    satellites. With the switch set to 0° the subwoofer output is in phase with the full 
    range speakers. With the control set to 80° the subwoofer output is out of phase. 
    Adjusting the subwoofer phase can help optimise the sound of subwoofer systems. 
    Further subwoofer phase advice can be found below.
    Notch Frequency, Slope and Level
    The Notch Frequency, Slope and Level controls enable a targeted Notch Filter to 
    be applied to the subwoofer output. Such a filter can be useful in reducing the 
    audibility of any listening room resonances. The Notch Frequency control sets the 
    centre frequency of the filter, the Notch Slope control sets the sharpness of the 
    filter (maximum slope equals sharpest filter) and the Notch Level control sets the 
    depth of the filter. Setting the Notch Level control to 0dB switches-off the filter. 
    System Setup
    Before listening to your subwoofer and system make one final check of the cables 
    and connections. If all appears well begin listening at a relatively low volume to 
    confirm that the system is operating as expected. Only increase the volume if you 
    are happy that the sound at low volume is fundamentally as expected. If you are 
    unhappy, turn the system off and re-check all the cables and connections.
    The Aegis Neo Subwoofer may take a little time to reach normal operating 
    temperatures and to “run-in”. Your ears too will take some time to adjust to the new 
    sound, so it is unwise therefore to make rapid judgements about the performance 
    of the system.
    The most important aspect of the Aegis Neo Subwoofer setup is its integration 
    with the satellite speakers. Assuming the locations chosen for these are satisfactory, 
    adjusting the subwoofer’s location in the room, its Volume Level and Phase, and, if 
    it is used in a conventional stereo system, its Crossover Frequency, should enable a 
    good result to be achieved. Leave the Notch Level control initially at 0dB.  
    Page 4Page 4
    6 .   C o n t r o l s   &   S y s t e m   S e t u p8 .   T h e   A e g i s   N e o   R a n g e
    7. Specification
    Type: Closed box, active subwoofer.
    Drivers: 0mm pulp cone with 48mm thermally 
    bonded voice coil. High-power long-throw magnet 
    Low Frequency Cut-off: - 6dB @  6Hz
    Amplifier: 00 Watts into 8 Ohms
    Low Pass Filter: Variable  nd order, 45Hz to  50Hz
    Phase: Variable 0° to 80°
    Notch Filter: Variable. Frequency: 40 to  00Hz, Q: .5 to 
    5.0, Level: 0dB to -dB
    Dimensions (H x W x D): 40 x 360 x 35mm 
    Weight:  7.0kg (single, unpacked)
    Acoustic Energy reserves the right to modify product 
    Select a few short examples of familiar programme material - both movie and 
    music - to use while adjusting the subwoofer. Listen also from a variety of different 
    positions in the room. Check for balance and consistency of sound - neither too 
    much nor too little bass across the range of programme material and listening 
    positions. Experimentation and careful listening is the key to finding a good 
    subwoofer setup.
    Sub-woofer Location 
    Broadly speaking, the closer a subwoofer is to the corner of the room (assuming the 
    walls are solid), the more bass it will generate in the room (and the lower its volume 
    need be set). Moving the subwoofer closer to a corner however will also tend to 
    reduce the consistency of the subwoofer volume over the listening room (a corner 
    location being the worst in this respect). Positions closer to the corner will also tend 
    to change the character of the bass produced by the subwoofer - it will emphasise 
    the very lowest signals more. This change in bass character with location is the 
    variable that enables a good compromise position for the subwoofer to be found.
    Volume Level 
    Setting the subwoofer volume is important in terms of both overall system balance 
    and the demands of different types of programme material. You may find that 
    material with an emphasis on music works better with a lower subwoofer volume 
    than movie material with an emphasis on “effects”. Finding a compromise between 
    the two is a matter of subwoofer volume adjustment in parallel with adjusting its 
    position in the room.
    Crossover Frequency 
    As you adjust other parameters you may find that moving the crossover frequency 
    a little from the suggested starting value is beneficial. Adjust other aspects of the 
    setup, particularly subwoofer location and phase, before adjusting the crossover 
    frequency significantly.
    Adjusting the subwoofer Phase should be left until after the Location is chosen 
    and the Volume Level and Crossover Frequency are set. Experiment with adjusting 
    the phase if it is proving difficult to get satisfactory results by location, volume and 
    crossover adjustment alone.
    Notch Frequency, Notch Slope and Notch Level 
    If, while adjusting the subwoofer, it becomes apparent that a low frequency room 
    resonance (bass boom) is dominating the sound of the system, the Notch Filter 
    can be used to suppress the resonance. First, set the Notch Slope to MAX and the 
    Notch Level to -12dB. Now adjust the Notch Frequency in steps from 45Hz upwards 
    and listen to the effect on the sound. When the Notch Frequency matches the 
    frequency of the room resonance (usually between 60Hz and 90Hz in typically 
    dimensioned rooms) its effect on the sound will be suppressed. When the correct 
    frequency has been identified, adjust the Notch Slope and Notch Level to fine-tune 
    the sound. Aim for a high Notch Slope value and a low Notch Level (i.e. close to 
    0dB) value.
    Note: If the Notch Slope is set too low (especially if the 
    Crossover Frequency is set to a low value) it will begin 
    to operate more as a second volume control. Try to 
    keep the slope set relatively high.
    Note: The Notch Filter will have increasingly little 
    effect as its frequency is adjusted above the crossover 
    frequency (nominally 80Hz on audio-visual LFE signals).
    Once the Notch Filter is set it will probably be 
    worthwhile revisiting and fine-tuning the Volume Level, 
    Crossover Frequency and Phase settings again. 
    Page 5
    6 .   C o n t r o l s   &   S y s t e m   S e t u p8 .   T h e   A e g i s   N e o   R a n g e
    9 .   W a r r a n t y
    1 0 .   C o n t a c t
    The Aegis Neo Subwoofer is part of a range that 
    includes the Aegis Neo One stand-mount speaker, the 
    Aegis Neo Three floor-stand speaker and the Aegis Neo 
    Centre centre channel speaker. 
    Aegis Neo One 
    Aegis Neo One is a compact high resolution two-way 
    stand-mount speaker.
    Aegis Neo Three 
    Aegis Neo Three is  .5-way floor stand speaker that 
    builds on the performance of the Aegis Neo One 
    with wider bandwidth, higher power handling and 
    enhanced detail resolution.
    Aegis Neo Centre 
    Aegis Neo Centre is a  .5-way centre channel speaker 
    designed to combine with the Aegis Neo One or Three 
    for perfectly matched audio-visual systems.
    Your Acoustic Energy speaker is guaranteed against 
    original defects in materials, manufacture and 
    workmanship for three years from the date of 
    Under this warranty Acoustic Energy agrees to repair 
    any defect or, at the company’s discretion, replace 
    the faulty component(s) without charge for parts or 
    labour. This warranty does not imply any acceptance 
    Acoustic Energy Limited 
    16 Bridge Road 
    Gloucestershire GL7 1NJ 
    Tel:   +44 (0)1285 654432 (Sales)
      +44 (0)1285 656890 (Technical)
    Fax:   +44 (0)1285 654430
    Email:  [email protected]
    Web:   www.acoustic-energy.co.uk
    Products  that  display  the  crossed-out  wheeled  bin  logo 
    cannot  be  disposed  of  as  domestic  waste  but  must 
    be  taken  to  a  facility  capable  of  re-cycling  them  and 
    appropriately  handling  any  waste  by-products.  Contact 
    your local authority for details of the nearest such facility.
    by Acoustic Energy or its agents for consequential loss or damage and specifically 
    excludes fair wear and tear, accident, misuse or unauthorised modification.
    This warranty is applicable in the United Kingdom only and does not  in any way 
    limit the customer’s legal rights. If you have reason to claim under the warranty 
    please contact your dealer in the first instance 
    Claims and enquiries under the warranty for Acoustic Energy products purchased 
    outside the UK should be addressed to the local importers or distributors.
    Please retain all original packaging materials for possible future use. We suggest 
    that you complete details of purchase now and keep this information in a safe place 
    for future reference.
    Purchase Date:
    Serial Number: 
    Acoustic Energy Limited, 6 Bridge Road, Cirencester, Gloucestershire GL7  NJ. 
    Tel: +44 (0)85 65443 (Sales), +44 (0)85 656890 (Technical). Fax: +44 (0)85 654430
    Email: [email protected] 
    Web: www.acoustic-energy.co.uk
    Manual Part No. MA308
    O NE
    T H R E E
    C E N T R E
    S U B   W O O F E R
    S E R I E S 
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