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Acoustic Energy Loudspeaker AE22 04 Active User Manual

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    O W N E R S   M A N U A L
    p a s s i v e 
    a c t i v e 
    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 professional audio product, monitors 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 monitors perform optimally.
    This manual covers both the Active and Passive variants of the AE22. Following this 
    introduction, the Manual is divided into sections covering installation, positioning, 
    passive connection, active connection, active controls, listening, specifications, 
    warranty and contact information. We recommend that you read at least the first 
    six sections carefully before installing and using your AE22s. In the case of the 
    AE22 Active please also read the Important Safety Instructions below.
    AE22s are intended to be used mounted horizontally 
    either on a mixing-desk meter-bridge or on 
    speaker floor-stands in relative proximity to the 
    rear room boundary. Alternative, on-wall, mounting 
    arrangements such as wall brackets are possible 
    although these may result in less consistent 
    performance. If brackets are to be used they should be 
    as rigid as possible and firmly attached to brick-built 
    The construction style, rigidity and dimensions of 
    the floor-stands are of critical significance to the 
    performance of the AE22. Stands should broadly follow 
    the specification below. Your retailer or distributor will 
    be able to offer advice.
    Recommended Floor-stand Specification.
    Construction Style:  Direct coupled pillared.
    Mass Loading:     Preferred.
    Overall height:     As appropriate for AE22 
    tweeter to be at head 
    height when seated.
    Top plate Dimensions 
    Minimum width:    230 mm 
    Maximum width:    330 mm 
    Minimum depth:    200 mm 
    Maximum depth:    290 mm
    Top plate interface:      Direct coupled tri-point 
    or damped-compliance.
    Floor interface:      Floor spikes (M6 
    1 .   I n t r o d u c t i o n
    Important Safety Instructions
    Ensure that your AE22 Active 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.
    . 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.
    0. Protect the power cord from being walked on or pinched particularly at plugs, convenience 
    receptacles, and the point where they exit from the apparatus.
    . Only use attachments/accessories specified by the manufacturer.
    2. 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.
    3. Unplug this apparatus during lightning storms or when unused for long 
    periods of time.
    4. 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.
    5. 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.
    6. The MAINS plug is used as the disconnect device, the disconnect device shall remain 
    readily operable.
    7. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
    2 .   I n s t a l l a t i o n
    3 .   P o s i t i o n i n g
    The AE22 is both a heavy and a relatively delicate 
    precision engineered product that can be damaged 
    by inappropriate handling. Please take care when 
    unpacking or moving the monitors not to touch either 
    of the drivers. Damage to a driver will at best degrade 
    performance and at worst result in complete failure.
    The packaging should be retained for future use. 
    Page 2
    1 .   I n t r o d u c t i o n
    2 .   I n s t a l l a t i o n
    3 .   P o s i t i o n i n g
    The position of monitors within the studio room is 
    likely to have more influence over their performance 
    than any other aspect of their installation. It is worth 
    spending some time experimenting both with the 
    finer points of monitor positioning, as well as the 
    larger scale issues of room layout.
    If you are already familiar with the acoustic 
    characteristics of your studio room, and the way 
    speakers perform in it, you may already have a good 
    feel for where to position your AE22s. However, 
    installing any new  component provides a good 
    opportunity to review an existing set-up and perhaps 
    make improvements.
    AE22s are NOT magnetically shielded. Magnetically 
    sensitive equipment or media should be kept at least 
    1m away.
    The position requirements for a pair of AE22s installed 
    in a typically sized and equipped studio room, 
    illustrated in Diagram One, are as follows: • 
    Between  .5 and 3.0 metres apart.
    •  Placed horizontally with tweeters outermost if the monitoring       
      position tends to be below the horizontal axis and tweeters innermost if     
      the monitoring position tends to be above the horizontal axis.
    •  Between 0.2 and  .0 metres from the rear wall.
    •  At least  .0 metre from the side walls.
    •  Clear of room corners.
    Don’t worry if it is not practical to follow each requirement exactly. The most 
    important thing is to experiment with the different options that are practical and 
    find the one that works best.
    AE22s need not be angled inward towards the listening position although adjusting 
    this “toe-in” angle can be effective in fine-tuning the AE22s high frequency tonal 
    Wherever your AE22s are positioned it is important that each of the pair is located 
    in a similar acoustic environment (different environments would be, say, a curtained 
    area and a solid wall). The acoustic character of the walls, ceiling and floor of 
    the room in the area where the main reflections between speakers and listening 
    position will occur should also be similar.
    Once your AE22s are connected and working, and you begin to become familiar 
    with their performance, it is likely to be worthwhile experimenting a little more 
    with their positioning. Reducing the distance between the monitors and the rear 
    wall will increase the level of bass and low midrange making the monitors sound 
    warmer. The warmth however is likely to be gained at the expense of some mid-
    range clarity and stereo image focus and depth. Increasing the toe-in angle of the 
    monitors may regain some image focus but again this may be at a cost of image 
    width and high frequency balance. Learning through experimentation how AE22s 
    behave in your studio will help you find the optimum solution.
    D i a g r a m   O n e
    2.5 metres
    Listening position
    0.5 metres from back wall  
    Reflection region. Keep similar each side. 
    Page 3
    4 .   C o n n e c t i n g   A E 2 2   P a s s i v e5 .   C o n n e c t i n g   A E 2 2   A c t i v e
    Connecting passive AE22s to an amplifier is fundamentally a simple process. 
    However, there are some choices to be made and issues to consider concerning 
    speaker cable type.
    Passive AE22s are fitted with a pair of binding-post terminals and a parallel Neutrik® 
    Speakon®  socket. The binding-post terminals can accept stripped wires, spade 
    connectors, or 4mm plugs. Each of these termination methods is potentially equally 
    effective and the choice is likely to be influenced by the type of speaker cable used. 
    The Speakon socket and plug provides enhanced security and reliability of 
    connection and is the preferred option. An appropriate plug is supplied within 
    the packaging. Speakon plugs are also widely available from audio and electronic 
    component distributors and retailers. Either 2-pole (NL2FC) or 4-pole (NL4FC) plugs 
    may be used.
    Diagram Two illustrates the assembly and connection of a 2-pole Speakon plug. 
    Remember to thread the cable through the Rear Housing and Clamp Ring before 
    connecting it to the terminals. Strip approximately 6mm of bare wire and connect 
    to the screw terminals within the Speakon. If 4-pole Speakon plugs are used 
    connect to the terminals labelled +1 and -1. Once the speaker cable is connected 
    to the terminals, the plug can be reassembled. The Clamp Ring secures the cable as 
    the Rear Housing is tightened.
    To connect the speakers simply push the Speakon plug into the socket and twist 
    the plug clock-wise to lock. Twist counter-clockwise and pull to disconnect.
    Take care not to connect any negative and positive terminals together and “short-
    circuit” the amplifier. Always make connections with the amplifier switched off.
    Connection Polarity.
    It is important to ensure that each speaker is connected with the same polarity. 
    Positive speaker terminals should always be connected back to amplifier positive 
    terminals, and negative speaker terminals connected back to amplifier negative 
    terminals. Performance will be degraded if connections are made with incorrect 
    Neutrik® and the names of Neutrik® products referenced herein are either trademarks and/or service marks of Neutrik®.
    D i a g r a m   T w o
    Plug Body
    Clamp Ring
    Rear Housing
    Connect Positive
    Connect Negative
    Cable Choice.
    Choice of speaker cable type will be influenced by the 
    characteristics of other components in your monitoring 
    system and your dealer or distributor will be able to 
    advise. There are however some simple guidelines to 
      •    The external cable diameters compatible with 
    Speakon plugs are as follows: 
    NL2FC (2-pole): 4mm -  0mm, NL4FC (4-pole) 
    5mm -  mm (white Clamp Ring), NL4FC (4 pole) 
    9.5mm -  5mm (black Clamp Ring).
    •    Cable runs to each speaker should be kept as 
    short as possible consistent with each being of 
    equal length. 
    •    Short cable runs are especially important if the 
    cable is of relatively small cross-sectional-area. 
    •    If the cable is advertised as “directional” care 
    should be taken to ensure that its orientation is 
    as recommended.
    The AE22 is a medium sensitivity speaker that demands 
    a relatively powerful amplifier for adequate monitoring 
    volume levels to be achieved in an average studio 
    room. A minimum of 75 and maximum of 200 Watts 
    into 8 Ohms per channel is recommended. AE22s offer 
    a relatively easy load to the amplifier and do not make 
    unusually heavy demands on its current delivery. 
    No overload protection systems are fitted to the AE22 
    so it is possible to cause damage through over-driving. 
    Such damage can occur regardless of the power rating 
    of the driving amplifier and is not covered by any 
    warranty. If ever the sound at high volumes becomes 
    distorted your AE22s are at risk of damage. In such 
    circumstances the volume must be reduced. 
    Page 4
    4 .   C o n n e c t i n g   A E 2 2   P a s s i v e5 .   C o n n e c t i n g   A E 2 2   A c t i v e
    Each active AE22 must be connected to mains power 
    and signal cables. Diagram Three illustrates the rear 
    connection and control panel.
    Mains Connection
    Mains power is connected via the IEC socket on 
    the back panel. Ensure before connecting to the 
    mains supply that the voltage specified on the panel 
    corresponds to your local mains voltage. A mains fuse 
    is located adjacent to the mains socket. If the fuse fails 
    it must be replaced by one of the same specification. 
    Repeated mains fuse failure indicates a fault which 
    should be investigated by a qualified service engineer.
    The AE22 power switch is also located adjacent to the 
    mains socket. Do not switch-on until all connections 
    have been made. Illumination of the front panel display 
    indicates that the AE22 is switched on.
    D i a g r a m   T h r e e
    Signal Connection
    The AE22 provides both balanced and unbalanced line-level signal inputs for 
    connection to the monitor outputs of the mixing desk, digital audio workstation or 
    computer audio interface. A three position switch provides 6dB of input sensitivity 
    The balanced input is via a three pin XLR socket and the unbalanced input via 
    a concentric 6mm mono jack socket. Always use high quality professionally 
    terminated signal cables. Do not plug or unplug signal cables while the AE22 is 
    switched on. 
    HF Adjust
    MF Adjust
    LF Adjust
    Line InputBalanced XLRUnbalanced Jack
    AM022-04-06POWER INPUT:
    Risque de choc electriqueNe pas ouveré
    Risk of electrical shockDo not open
    This speaker is NOT magnetically shielded
    No user serviceable parts inside.Consult Owners Manual before use.Operate in accordance with Manufacturer’s instructions.If in doubt refer to qualified service personnel.
    Designed and Engineered by Acoustic Energy Ltd, England.Made in Malaysia. 
    Page 5
    8 .   S p e c i f i c a t i o n s
    Before using your AE22s for the first time make one final check of the cables and 
    connections. If all appears well begin listening at a relatively low level to confirm 
    that the system is operating as expected. Only increase the volume if you are 
    happy with the sound at low levels. If you are unhappy, turn the system off and re-
    check all the cables and connections.
    AE22s may take a little time to reach normal operating temperatures and to “run-
    in”. It is unwise therefore to make too rapid a judgement about the performance 
    of the monitors. Your ears too will take some time to adjust to the new sound so 
    revisiting the speaker positioning is best left for a few days.
    The AE22 Active is fitted with gain and equalisation 
    controls on its rear connection panel and a control 
    configuration display on the front panel. The controls 
    behave as described in the following paragraphs:
    Adjusts the AE22 amplifier input 
    sensitivity to suit the output level 
    of the mixing desk, workstation or 
    computer interface. The three position 
    switch offers -3dB, 0dB and +3dB. 0dB 
    sensitivity is equivalent to 0.9V RMS 
    input for maximum rated amplifier 
    output at 400Hz.
    LF Adjust:      Provides three options of low 
    frequency equalisation. Cut applies 
    -3dB of attenuation at 70Hz, Flat is the 
    un-equalised response, and Extend 
    applies +3dB of gain at 40Hz.  LF Adjust 
    should normally be left  Flat. Cut is 
    intended to model the LF characteristic 
    of smaller speakers, while Extend 
    enables the AE22 to reproduce low 
    frequency programme material or 
    information that may otherwise go 
    unnoticed. Maximum volume capability 
    is likely to be reduced when Extend is 
    MF Adjust:    Provides three options of mid 
    frequency equalisation. Cut applies -
    2dB of attenuation at 400Hz, Flat is the 
    un-equalised response of the speaker, 
    and Lift applies +2dB of gain at 400Hz. 
    Cut and Lift can help compensate 
    in installations that result in an 
    unsatisfactory midrange balance. 
    HF Adjust:    Provides three options of high 
    frequency equalisation. Cut applies 
    -.5dB of attenuation from 2kHz, 
    is the un-equalised response of the 
    speaker, and Lift  applies +.5dB of gain 
    at from 2kHz. Cut and Lift can help 
    compensate in installations that result 
    in an unsatisfactory high frequency 
    6 .   A E 2 2   A c t i v e   C o n t r o l s
    The setting of each control is indicated by the front panel display of the AE22 
    - illustrated in Diagram Four below. The front panel display also carries two clip 
    (peak) indicators which illuminate if either the low frequency or high frequency 
    amplifiers reach their output limit. The volume level should be reduced if the clip 
    indicators illuminate more than occasionally.
    D i a g r a m   F o u r
    LF Adjust
    MF Adjust
    HF Adjust
    7 .   L i s t e n i n g 
    Page 6
    8 .   S p e c i f i c a t i o n s
    Your Acoustic Energy speakers are guaranteed against original defects in materials, 
    manufacture and workmanship for 3 years from the date of purchase.
    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 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.
    For any sales, technical or spares enquiries contact your local dealer or distributor 
    9 .   W a r r a n t y
    6 .   A E 2 2   A c t i v e   C o n t r o l s
    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.
    Model:  AE22 Passive  AE22 Active
    Type:   2-way, closed-box loaded.  2-way, closed-box loaded.
    LF/MF Driver:   200mm pressed alloy cone.  200mm pressed alloy cone. 
      Underhung, 50mm dia voice-coil.  Underhung, 50mm dia voice-coil.
    HF Driver:  25mm Ring Radiator. Neodymium magnet.  25mm Ring Radiator. Neodymium magnet.
    Filter Network:   3rd order Bessel at 2.0kHz.  3rd order Bessel at 2.0kHz.
    Frequency Response: 60Hz to 40kHz ±3dB    60Hz to 40kHz ±3dB
    Power Handling:  200W peak programme  N/A
    Nominal Impedance:   8 Ohms  N/A
    Sensitivity:  87dB for  Watt at   metre  N/A
    Input Sensitivity:  N/A  0.9V ±3dB
    Input Impedance:  N/A  >0kΩ
    LF Amplifier:  N/A  00 Watts RMS
    HF Amplifier:  N/A  60 Watts RMS
    LF Adjustment:  N/A  +3dB @ 40Hz Q = , -3dB @ 70Hz Q =  ,
    MF Adjustment:  N/A  ±2dB @ 400Hz Q = 0.5
    HF Adjustment:  N/A  ±.5dB 2kHz to 40kHz
    Dimensions (H x W x D):  250 x 350 x 300mm   250 x 350 x 330mm
    Weight (single, unpacked):  0kg  5kg
    Acoustic Energy reserves the right to modify product specifications.
    1 0 .   C o n t a c t
    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 
    Acoustic Energy Limited, 16 Bridge Road, Cirencester, 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
    Manual Part No. MA2201_R1
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