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OperangInstruconsforthe
SerieT
Sub-Bass
Systems
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    SerieT
    Sub-Bass
    Systems

    Opera ng Instruc ons for the



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    Important Safeguards

    Read all of these instruc ons.
    Save these instruc ons for future use.
    Unplug from the wall socket before cleaning.
    Do not use near water.
    Do not place on a stand or table; it may fall causing injury to a child or adult, and damage to the unit.
    The unit should only be operated from the power source indicated on the panel of the amplifier.
    Only use the power cord supplied.
    Do not allow anything to rest on the power cord. Posi on the power cord such that it cannot be walked on.
    For added protec on during a lightning storm, or when not in use for long periods of me, unplug it
    from the wall socket.
    10 Never spill any kind of liquid on the unit.
    11 Do not a empt to service the unit yourself, as removing the amplifier may expose you to dangerous
    voltages. Refer all servicing to your dealer.
    12 Unplug the unit from the wall socket and refer servicing to your dealer under the following condi ons:
    a When the power cord or plug is damaged.
    b If liquid has been spilled onto the unit.
    c If the unit does not operate properly by following the opera ng instruc ons.
    d If the unit has been dropped and damaged.
    e When the unit exhibits a dras c change in performance.
    Warning
    This item is heavy. To avoid risk of injury, take care when handling.
    Design Safety
    This apparatus is supplied with a detachable mains cord. For 230V opera on a 1.6A/T5, 2A/T7, 3.15A/T9
    fuse is fi ed in the socket. For 115V opera on a 3.15A/T5, 4A/T7, 6.3A/T9 fuse is fi ed. Should the fuse
    need to be replaced use a similar rated fuse approved to ASTA or BSI 362 standards. Do not use without the
    fuse cover in place. Replacement fuse covers are available from your distributor.

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    Welcome to the REL Family
    Thank you for buying a REL Serie T Sub-Bass System. The Serie T is the result of a state-of-the-art collabora on
    between our American design and engineering team and our Bri sh produc on team.
    Serie T is conceived as the most cost effec ve high end product we know how to build. We have spared
    none of the materials and finishing techniques our larger designs are noted for. Many compe ng products
    are clearly the result of cost engineering, however, Serie T is a pure high end product in design and execu on.
    If, like many, you are surprised and delighted by the quality and “suddenness” of bass as rendered by Serie T,
    know that this is the result of a careful, painstaking itera ve process of the sort that so rarely makes it into
    produc on at anything like these prices.
    Many of the sonic virtues – speed, warmth and slam – embodied in Serie T are the direct result of
    mechanical and acous c advancements. In par cular, we have u lized damping and resonance control
    approaches more familiar to fine acous c instrument manufacturers incorpora ng bracing that is highly
    unusual in this applica on. The bracing is carefully wedged into shallow channels in the side and top wall
    material which be er couples the energy control of these panels. Addi onally, the aluminium feet are
    milled from solid billet and weigh an incredible amount. We thoroughly tested and were able to clearly
    discern the benefit of having a solid, high mass exit path for deleterious vibra on; vibra on that would
    otherwise slow and blur the clarity of bass lines. Make a structure inert and quieter and more of the
    music emerges.
    A brief word about the styling, fit, and finish. Each Serie T receives nine coats of lacquer, all of which require
    hand sanding. The final coat is then turned by hand on a large, industrial rouging wheel using jewelry buffing
    compound. Finally, the deep, wet gloss is achieved by hand polishing using micro fibre cloth and expensive
    a ermarket waxes. All exposed bolts used to a ach the rear panel to the Serie T cabinet are polished T-304
    stainless steel allen head designs. This extra cost is undergone to ensure that even in humid markets RELs
    will not oxidize or degrade in appearance. Each badge is milled from solid billet aluminium and is a full
    2.5mm thick even though we choose to only reveal 1mm above the surface of the cabinet. Much like the
    underlying quality of all RELs, more lies beneath the surface than is evident to the eye.
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    Overview:

    Serie T Sub-Bass Systems
    Many or most loudspeakers emphasize the mid-bass. This is the range from 50 to 90 Hz. We at REL believe
    this is an incomplete approach and that loudspeakers need to be extended in the lower frequencies for true
    full range reproduc on. All of our designs are true Sub-Bass Systems, meaning they are designed to reproduce
    very low frequencies (below 30 Hz) that are felt rather than heard. This is because we understand that music
    is full-range, as are sound effects on movies, and we intend for our products to reproduce all of these
    sounds, not just a narrow band.
    Serie T is equipped to allow you to take full advantage of Dolby Digital AC3, DTS, MPEG 2 and any other
    digital sound format that includes a dedicated Low Frequency Effects (LFE) channel.
    The dedicated LFE input meets the tough specifica on laid down for digital 3/2.1 channels, usually known
    as 5.1. The output is nominally flat from 35 Hz – 90 Hz. It has a dedicated input level control which enables
    users to set the LFE level independently of the processor. This is important because not all processors offer
    control over this significant parameter. The LFE channel is frequently output at 10 dB higher levels than the
    other channels.
    The Serie T models also have high-level (speaker level) inputs with dedicated input level control. Uniquely,
    both the speaker level and the LFE input can be used simultaneously. This means you may set it up for the
    best possible 2-channel performance sound with your CDs or other stereo signals and instantly revert to
    using the Sub-Bass System as the dedicated LFE component when watching movies. This is a feature of
    real benefit if you wish to play music in stereo mode in the purist audiophile way and also in REL Theater
    Reference mode with no switching necessary. By connec ng BOTH High Level and .1 concurrently and
    se ng your processor to “Large” or Full Range, the best possible performance will be obtained. Consult
    the owner’s manual of your loudspeakers or consult with your dealer before se ng to large as a few
    speakers cannot handle the bass that is then directed through to the main speakers.

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    REL Serie T Rear Panel Connec on Legend

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    4

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    1 Volume Control for .1/LFE INPUT: Use to adjust output level when using .1/LFE input from a 5.1 amplifier
    or processor.
    2 Volume Control for HI/LOW INPUT: Use to adjust output when using either HIGH-LEVEL or LOW-LEVEL
    input. Do not use both simultaneously.
    3 Crossover: Used to select crossover frequency. Variable between 30Hz and 120Hz.
    4 .1/LFE INPUT: Used to connect to the .1/LFE output from a 5.1 amplifier of processor. Should be used in
    conjunc on with REL HIGH-LEVEL connec on for the ul mate theater experience.
    5 LOW-LEVEL INPUT: Used to connect LOW LEVEL to the output of a preamplifier, integrated amplifier
    or receiver ONLY when HIGH LEVEL INPUT cannot be properly connected. (For home cinema, use
    .1/LFE INPUT).
    6 Phase: Used to set phase 0-180 degrees.
    7 HIGH-LEVEL INPUT (Neutrik® Speakon® Socket): Use to connect HIGH LEVEL to the main front
    amplifier speaker terminals.
    8 Power ON/OFF Switch: Use to turn unit on or off.
    9 IEC Mains Socket: Fused mains (AC) input socket that accepts a detachable power cord.

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    Connec ng Up
    Always switch off your system before disconnec ng any wires.
    ALWAYS connect using the REL HIGH LEVEL input, unless your system simply cannot accommodate this.
    While rare, a few esoteric systems, such as those that deliver a pure digital signal to ac ve speakers preclude
    this possibility. To increase the versa lity of connec ng up, the Serie T models have three separate inputs. A
    Neutrik Speakon socket and two phono sockets. This is to facilitate use with both two-channel stereo systems
    and AV surround sound systems.
    The HIGH LEVEL, unbalanced, dual-channel (stereo) input is via a Neutrik Speakon connector which is connected
    to the power amplifier’s le and right channel speaker terminals. This has the advantage of ensuring that the
    REL receives exactly the same signal as the main speakers. This means that the character of the bass from the
    main system is carried forward into the sub-bass. This is a very important point and together with the REL’s
    Ac ve Bass Controller (ABC) ensures far superior system integra on of the sub-bass with the main system.
    The LOW LEVEL input is via a phono jack that connects to either the .1/LFE output of a home cinema
    amplifier/processor or to the output of a stereo preamplifier.
    HIGH-LEVEL and .1/LFE inputs can be used simultaneously. The benefits are two-fold when used with a
    home cinema system. The .1 Input reproduces the .1/LFE channel and the HIGH LEVEL connec on underpins
    the main front speakers. The main front speakers should be set to the ‘large’ op on on the processor. See
    “Home Cinema Applica ons” for more informa on.
    Connecting to the Power Amplifier Using the Speakon HIGH LEVEL INPUT
    To engage the Neutrik Speakon plug, insert fully into socket and rotate clockwise un l locked.
    To remove the Neutrik Speakon plug, grip body of plug, place thumb on chrome lever, move lever backwards,
    rotate plug an clockwise quarter turn and withdraw.
    The HIGH LEVEL input is designed to accept the stereo (two-channel) signals from the speaker terminals of
    your receiver, integrated amplifier or basic amplifier. This has the advantage of ensuring that your subwoofer
    receives exactly the same signal as the main speakers, which means that the character of the bass from the
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  • Page 8

    main system is carried forward into the Sub-Bass System. This is a very important point and together with
    REL’s Natural RollOff™ circuitry, ensures far superior system integra on of the Sub-Bass System with the
    main system.
    HIGH LEVEL INPUT: Connec ons should be made to the same binding post on main amplifier as the main
    speakers. Red to amplifier main right speaker red terminal, yellow to amplifier main le speaker red terminal
    and black to amplifier main speaker black terminal, right or le but not both. Plug the Neutrik Speakon plug
    into the HIGH LEVEL Speakon socket. Note: This connec on does not draw power from the power amplifier
    and, yes, your REL is a powered sub bass system. However, by deriving its signal from the main power
    amplifier, be er sound quality is achieved.
    .1 INPUT: This requires a phono-to-phono cable and is a dedicated true .1 channel. This circuit therefore
    eliminates the normal Natural RollOff™ Crossover and passes the .1 LOW LEVEL signal through with only the
    required 120Hz fourth-order filter.
    LOW LEVEL INPUT: This single channel phono input allows for conven onal connec on to a preamplifier
    and should be used in the rare event that a HIGH LEVEL connec on proves incompa ble. Plug one end of
    a single phono-phono cable into the LOW-LEVEL input jack of the REL and the other end into either the le
    or right channel output of your preamplifier. Because much sub-35Hz bass informa on is mono, there is
    li le need to connect both le and right channels. Should your system require this style of connec on –
    HIGH LEVEL is preferred – addi onal performance is available by purchasing a second, matching REL and
    running each as separate stereo subs.
    PHASE SWITCH – Used to set phase
    Posi on 0 / HIGH LEVEL, LOW LEVEL or LFE: 0 degrees phase
    Posi on 180 / HIGH LEVEL, LOW LEVEL or LFE: 180 degrees phase
    PHASE SELECTION AFFECTS BOTH HIGH- AND LOW-LEVEL INPUTS
    Crossover is always engaged for HIGH LEVEL INPUT. The .1/LFE signal does not pass through the
    crossover circuit.

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    REL Set-Up Made Simple

    REL products are not tradi onal subwoofers, but are true Sub-Bass Systems. A REL is designed to augment
    the performance of “full range” speaker systems in order to provide, in certain cases, linear response below
    12 Hz. Therefore, for the moment, set aside everything you’ve been taught about subwoofers and how they
    are integrated into a stereo or home cinema system. REL Sub-Bass Systems set-up and posi oning differs
    from conven onal subwoofers. A REL will take advantage of physics and room acous cs to provide deep
    pressuriza on as no tradi onal subwoofer can. It is important that you bring to the set-up process a willingness
    to do things a li le differently in order to obtain these superior results. The end result of your labours will
    be an u erly seamless integra on of true deep bass to a sound system, regardless of the main speakers’ low
    bass capability.
    Basic set-up should take no more than ten to fi een minutes to accomplish once connected.
    Before You Begin
    1 It is helpful to know that you will almost always connect the REL to the input on the rear panel labeled
    “HIGH-LEVEL INPUT.” This connec on is made using the supplied 34’, 10” (10 meters) cable, the bare
    leads of which connect to the speaker output terminals of the power amplifier. The easy and foolproof
    connec on at the REL is done with a Neutrik Speakon connector. The purpose of connec ng to the
    speaker output terminals is one of the unique secrets of REL’s success. By connec ng to the high-level
    input on the REL from the amplifier, you build forward the sonic signature of your main system, including
    the tonal balance and ming cues of the en re electronics chain. In this way, the REL is fed the exact
    signal that is fed to the main speakers.
    2 When possible, the REL should be placed in one of the corners behind the speakers. Remember, we are
    dealing with true LOW bass pressuriza on with RELs. Low bass pressuriza on below 40Hz is best derived
    from corner placement, where the most linear and efficient low bass can be produced.
    Connec ng and Se ng Up
    HIGH LEVEL connec on, using the enclosed cable with the Neutrik Speakon connector, is always the first
    choice. This connec on can be made without affec ng the performance of the amplifier because the REL’s
    amplifier input impedance is 150,000 ohms, in effect not producing any addi onal demand whatsoever on
    the rest of your system.
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    • The standard HIGH LEVEL hook up procedure is: a ach the red wire to the amplifier’s right posi ve
    speaker output terminal; a ach the yellow wire to the amplifier’s le posi ve speaker output terminal;
    a ach the black wire to whichever of the amplifier’s ground output terminals is convenient; plug the
    Speakon connector into the Sub-Bass System’s HIGH LEVEL input.

    Supplied Neutrik Speakon HIGH-LEVEL Interconnect
    Yellow
    Black
    HIGH-LEVEL Input

    Red

    Release Lever

    +

    L



    +

    R



    Amplifier Main Speaker Outputs

    • For differen al (i.e. fully balanced) amplifiers using one REL, simply use the standard connec ng scheme
    with the excep on of connec ng the black wire to chassis ground (i.e. a metal bolt or screw, preferably
    not painted or anodized, on the chassis of the power amp or receiver), not to a nega ve speaker terminal,
    and then connec ng into the HIGH-LEVEL input on the REL. Please contact your dealer should there be
    any ques ons concerning this or any other hookup procedure.
    Supplied Neutrik Speakon HIGH-LEVEL Interconnect
    Black

    Yellow
    Red

    Chassis Screw
    +

    +

    L



    +

    R



    Amplifier Main Speaker Outputs

    NOTE: The Serie T models are equipped with internal circuitry to allow seamless connec on to Class-D
    (digital) main amplifiers. If connec ng to a Class-D amplifier, follow the above connec on procedure for
    differen al amplifiers.
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    • If connec ng two RELs in a stereo configura on, connect the black wire of each REL to the nega ve speaker
    terminal of the corresponding amplifier channel; twist together the red and yellow wires of each REL
    separately and connect each pair to the posi ve speaker terminal of the corresponding amplifier channel.
    Supplied Neutrik Speakon HIGH-LEVEL Interconnect
    Left Sub

    Supplied Neutrik Speakon HIGH-LEVEL Interconnect
    Yellow
    Red
    Black

    Yellow
    Red

    +

    L



    Right Sub
    Black

    +

    R



    Amplifier Main Speaker Outputs

    • If connec ng a single REL as a dedicated center channel sub, connect the black wire of the REL to the
    nega ve center channel speaker terminal; twist together the red and yellow wires and connect this pair
    to the posi ve center channel speaker terminal.
    Supplied Neutrik Speakon HIGH-LEVEL Interconnect
    Yellow
    Red

    Black

    +

    C –

    Amplifier Main Speaker Outputs

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    • If connec ng a REL as a dedicated rear channel sub, connect the black wire of the REL to either the
    le rear or right rear nega ve speaker terminal; connect the yellow wire to the le rear posi ve speaker
    terminal; connect the red wire to the right rear posi ve speaker terminal.
    Supplied Neutrik Speakon HIGH-LEVEL Interconnect
    Yellow
    Black

    Red

    + RL –

    + RR –

    Amplifier Main Speaker Outputs

    LOW LEVEL connec on (via phono connector) is always an op on if HIGH LEVEL connec on is not possible.
    When connec ng to the LOW LEVEL inputs in a system in which HIGH LEVEL connec on is not possible,
    such as if using internally-amplified speakers, connect a single phono cable between the LOW-LEVEL input
    jack of the REL and either the le or right channel output of your preamplifier. Because virtually all sub-35Hz
    bass informa on is mono, there is no need to connect both le and right channels.
    When connec ng to a home cinema system where an .1/LFE channel output is present, connect a single
    phono cable between the sub output of the processor/receiver and the .1/LFE input jack on the REL.
    Posi oning: The op mal posi on for a REL is in one of the corners behind the main speakers. This posi on
    provides 9 dB of acous c amplifica on and allows for the most linear true low bass wave launch, owing to
    the ability to tune the REL to the longest distance in the room in order to produce the longest, therefore
    lowest, bass waves.
    The Process: To begin the set-up process, choose a piece of music that has a repe ve bass line that is
    very low in frequency. We suggest track four from the soundtrack to Sneakers (Columbia CK 53146). This has
    a repe ve bass drum throughout that gives you plenty of me to move the woofer around, but more
    importantly, the venue was quite large for this recording, and therefore it has a very deep and large-scale
    bass signature. This type of track is perfect for the set-up process and should be played at the highest
    reasonable level expected for system playback.
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    Working with a partner, one in the listening posi on and one at the REL manipula ng the controls, is the
    most effec ve and efficient way to set up the REL. If working alone, the ini al steps in the set-up can be very
    effec vely carried out from the loca on of the REL. Trying to ignore all other music in the track, listen for
    the bass drum and its effect on the listening room.
    Phase Orienta on: Once in the corner phase can be adjusted. This may be the single most cri cal step, and
    because it really is quite simple, it is o en over-thought. Keep in mind; the right phase is whichever posi on
    is the loudest or fullest. While playing music with true low bass, adjust the crossover to a point where the
    REL and the speaker are sure to share frequencies (about halfway up, or at 12 o’clock on the crossover
    control, or slightly higher for smaller speakers). At this point turn the HI/LOW LEVEL control up so that both
    the REL and speaker are roughly equal in volume and then switch, using the phase switch, from “0” to “180”
    phase posi ons. Again, whichever posi on is loudest or fullest is the correct posi on. That is, when the
    posi on is working in harmony with your main speakers, reinforcing bass, not cancelling it.
    Placement: The next step is to determine precisely how far from the corner the sub should be placed
    to achieve the most efficient output, as well as the lowest frequency extension. With the REL fully into the
    corner, and poin ng straight out along the diagonal coming out of the corner, con nuing to play the music,
    slowly pull the REL from the corner on the diagonal, equidistant from both side and rear wall. At a certain
    point (some mes a ma er of only a few inches, in rare cases a foot or more) the REL will audibly go lower,
    play louder, and, if it truly locks on to the room and is fully pressurizing it, the air around the REL will seem
    to be energized, stop right there! This is the correct posi on from the corner for the REL.
    Crossover and Level Se ngs: To determine the crossover point, take the volume of the REL (using the
    HI/LOW LEVEL control) all the way down, and put the crossover to 30 Hz. At this point, bring the REL’s volume
    back up slowly to the point where you have achieved a subtle balance, i.e. the point at which you can hear
    the REL even with the main speakers playing. Now, bring the crossover point up un l it is obviously too
    high; at this point bring it down to the appropriate lower se ng. For all intents and purposes, this is the
    correct crossover point. Once this stage has been reached, subtle changes to volume and crossover can be
    accomplished to provide the last bit of complete and seamless integra on. With that, set-up is complete.

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    Hint: There may be a tendency to set the crossover point too high and the volume of the Sub-Bass System
    too low when first learning how to integrate a REL with the system, the fear being one of overwhelming the
    main speakers with bass. But in doing so, the resul ng set-up will be lacking in bass depth and dynamics.
    The proper crossover point and volume se ng will increase overall dynamics, allow for extended bass
    frequencies, and improve soundstage proper es. Note, volume must be adjusted in conjunc on with crossover
    changes. In general, when selec ng a lower crossover point, more volume may need to be applied.

    REL Theater Reference™ Home Cinema Applica ons
    For Dolby Digital AC3 or other 5.1 theater systems, once the standard set-up for two-channel outlined
    above is complete, the LFE output from the processor or receiver should be connected to the .1/LFE input
    and appropriate volume adjustments made using the .1/LFE LEVEL control. For this configura on, you must
    set the processor to the “large” or “full range” se ng for the le and right speakers in order for the REL to
    receive the bass signal via the high-level cable. In this configura on, the REL provides support for both the
    le and right speakers for two-channel listening, and support for the LFE when movies are playing. Most
    processors will allow you to defeat the subwoofer output when listening in the two-channel mode. The
    effect of this set-up is one of greatly increased dynamics in the mid-bass range, no bass bloat, and a greater
    degree of space and ming from the special audio effects.

    REL Theater Reference 3D Bass™
    While slightly more complicated than the basic REL Theater Reference scheme, use of three RELs produces a
    number of noteworthy benefits and proves the most cost effec ve method of achieving professional Dolby 5.1
    standard bass performance. REL Theater Reference 3D Bass™ produces true full range performance from
    the three primary zones of reproduc on in theater sound resul ng in a far more natural and immersive
    experience than ANY single sub can produce.
    1 The main L/R speakers should be connected to the primary REL using REL Theater Reference connec on.
    This unit forms the founda on of your theater system’s performance and so should be perfectly
    matched to one’s main speakers.

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    2 In the rear corner (ideally that which is opposite the primary sub), connect a second REL to the rear
    speakers using REL Theater Reference connec vity. The purpose of the rear channel REL is to ensure
    proper front-to-rear balance and weight; too o en virtually ALL the power and weight in a theater
    comes from the front and it produces unnatural weigh ng as well as hot spots. By placing a rear REL
    diagonally opposite, bass transects the room on a tangent and has the effect of greatly smoothing
    overall in-room response of your RELs. This unit need not be a duplicate of your primary REL, instead
    it should match well with your surround speakers.
    3 Connect to the center channel a third REL using ONLY the HIGH LEVEL connec on. This may be easily
    accomplished by connec ng directly to the connec on terminals on the rear of the center channel
    speaker. To do so, first twist the red and yellow leads together and connect to the posi ve terminal,
    then connect the remaining black lead to the nega ve (black) terminal on the rear of the speaker. The
    purpose of the third “center” REL is to ensure the center channel can keep up with the scale, weight
    and dynamics the main system now has. Loca on should be anywhere from the opposite corner of the
    front wall to somewhere in the middle of the front wall, listen for best integra on with the center
    channel speaker. Some people prefer to use the REL as an actual pediment or stand for their center
    channel, the choice is yours. Again, this unit need NOT be an exact duplicate of the primary REL but
    should be chosen for its acous c ability to mate seamlessly with your center channel.
    First, carefully set-up and dial in the primary REL, then move to the rear REL and balance this against the main
    REL. Care must be taken to ensure phase is iden cal on both RELs as accidentally reversing phase of one rela ve
    to the other will result in a drama c reduc on in bass output. Finally, carefully dial in the performance of
    the center channel sub. Hint: To make this easier, once the primary REL has been dialed in, unplug it using
    the Speakon connec on from the system and dial in the rear, followed by the center channel REL.
    Genuine s cklers for perfec on find it easiest to tune in sec ons. For example, connect ONLY the L/R mains
    and the primary REL. Next, tune ONLY the rear surrounds and the rear REL. Finally, listen to and tune ONLY
    the center channel with the center REL.

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  • Page 16

    When you have accomplished this task, plug all three units in and re-check your gain se ngs as the
    cumula ve effect of hooking all three up will usually result in, temporarily, excessive output. Work carefully
    and methodically to reduce the se ngs on primary, then rear, and finally center channel RELs and in a few
    minutes balance should be restored. However, the net result of all your tuning will be a sound that u erly
    immerses the theater owner in a rich natural wash of bass that suffuses the room effortlessly, rather than
    what is o en experienced as too loud a bass balance pushing uncomfortably at the listener.
    Running In
    Care taken over running in will be rewarded by many years of pleasurable use. Both the electronics and the
    drive unit will benefit from an ini al period of carefully controlled use. Possible damage may be sustained
    by running in the unit at too high a volume se ng over an extended period. On the other hand, by taking a
    li le care over this ini al period, about 24 hours of actual use, a longer life with an eventual higher poten al
    performance is assured.
    Care and Polishing
    The cabinets are best maintained by using a light automo ve spray-on wax and a micro fiber cloth. (We use
    a spray-on made by a company called Griot’s Garage™. While this may not be available in all markets, you
    can use a similar product.) Take care not to spray the aluminum badges. Do not place objects, such as drinks
    on top of your REL Serie T. Never use a dry cloth on this finish.
    Technical
    Serie T uses a very fast, gentle and transparent filter intended to allow excellent impulse response and a
    natural sound. We refer to this circuit as Natural Rolloff™. Most subs use slow, very steep filters that lend
    an unnatural, machine-like quality to the sound. The Serie T power amplifiers are conven onal Class A/B
    linear power supply amplifiers – unusual at this price as most designs use a simple Class D amp. These
    designs feature robust, high current power supplies and are bulletproof. Our priority is for the most reliable
    circuit we know and we have logged millions of hours of playing me with a resultant failure rate that is the
    envy of the industry. The drivers are simple, rugged, rela vely light, and yet offer excellent self-damping so
    we are be er able to reproduce the nuance of music and preserve the explosiveness of transients. Finally,
    the cabinets, apart from being physically beau ful, are like finely tuned instruments that are largely responsible
    for the sonic virtue with which Serie T is imbued.

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    Power Saving Efficiency
    All REL Sub-Bass Systems are designed for maximum power efficiency, both when passing a signal through
    to its resultant output sound into the room and also when silent.
    REL circuitry allows for “power starva on” opera on under no signal condi ons. This means that when there
    is a gap in the signal the REL is instantly at maximum power saving efficiency, yet remains at maximum
    readiness to respond immediately to a sudden transient signal (such as an explosion in a movie) even a er
    a long quiet period and regardless of level.
    It is not necessary to switch your Serie T off between listening sessions – it will not significantly shorten its
    life by leaving it switched on. On the other hand, it will not harm sound quality if it is always switched off. It
    is perfectly safe to leave your Serie T on under all normal domes c circumstances as it is fully protected by
    internal fuses and an external mains fuse in the fuse holder of the mains input socket. There is a spare
    inside this holder.

    16



  • Page 18

    Specifica ons
    T-9
    Type:
    Ac ve Drive Unit:
    Passive Radiator:
    Lower Frequency Response:
    Input Connectors:
    Input Impedance:
    Gain Control Range:
    Power Output:
    Phase Switch:
    Amplifier Type:
    Protec on System
    Fully Electronic SET-SAFE:
    D.C. Fault:
    Output Short:
    Mains Input Voltage:
    Fuses:
    Dimensions (WHD):

    Passive Radiator, front-firing passive radiator, down-firing ac ve woofer
    10in., 254 mm long-throw, steel chassis
    10in., 254 mm
    28 Hz at -6 dB in room
    Hi Level Neutrik Speakon, Lo Level single phono, LFE phono
    High Level: 150k, Low Level: 10k, .1/LFE: 10k ohms
    80 dB
    300 Wa s (RMS)
    Yes, 0 or 180 degrees
    Class AB
    Yes
    Yes
    Yes
    220-240 volts, 110-120 volts for certain markets
    3.15 Amp semi delay 230 volts opera on,
    6.3 Amp semi delay 115 volts opera on
    13 x 14.75 x 14.75 in., (330 x 374.6 x 374.6 mm)
    Including Feet and Rear Panel Controls
    39 lbs. (17.7 kg)
    Gloss Piano Black or White Lacquer

    Net Weight:
    Finish:
    Supplied Accessories
    Mains Lead:
    Yes
    Neutrik Speakon Interconnect: Yes (10 Meters Nominal)
    Users Manual:
    Yes

    17



  • Page 19

    T-7
    Type:
    Ac ve Drive Unit:
    Passive Radiator:
    Lower Frequency Response:
    Input Connectors:
    Input Impedance:
    Gain Control Range:
    Power Output:
    Phase Switch:
    Amplifier Type:
    Protec on System
    Fully Electronic SET-SAFE:
    D.C. Fault:
    Output Short:
    Mains Input Voltage:
    Fuses:
    Dimensions (WHD):

    Passive Radiator, front-firing passive radiator, down-firing ac ve woofer
    8in., 200 mm long-throw, steel chassis
    10in., 254 mm
    30 Hz at -6 dB in room
    Hi Level Neutrik Speakon, Lo Level single phono, LFE phono
    High Level: 150k, Low Level: 10k, .1/LFE: 10k ohms
    80 dB
    200 Wa s (RMS)
    Yes, 0 or 180 degrees
    Class AB
    Yes
    Yes
    Yes
    220-240 volts, 110-120 volts for certain markets
    2 Amp semi delay 230 volts opera on,
    4 Amp semi delay 115 volts opera on
    12 x 13.75 x 13.75 in., (305 x 349.2 x 349.2 mm)
    Including Feet and Rear Panel Controls
    230V: 31 lbs. (14.1 kg) 115V: 34 lbs. (15.4 kg)
    Gloss Piano Black or White Lacquer

    Net Weight:
    Finish:
    Supplied Accessories
    Mains Lead:
    Yes
    Neutrik Speakon Interconnect: Yes (10 Meters Nominal)
    Users Manual:
    Yes

    18



  • Page 20

    T-5
    Type:
    Ac ve Drive Unit:
    Lower Frequency Response:
    Input Connectors:
    Input Impedance:
    Gain Control Range:
    Power Output:
    Phase Switch:
    Amplifier Type:
    Protec on System
    Fully Electronic SET-SAFE:
    D.C. Fault:
    Output Short:
    Mains Input Voltage:
    Fuses:
    Dimensions (WHD):

    Closed Box, down-firing ac ve woofer
    8in., 200 mm long-throw, steel chassis
    32 Hz at -6 dB in room
    Hi Level Neutrik Speakon, Lo Level single phono, LFE phono
    High Level: 150k, Low Level: 10k, .1/LFE: 10k ohms
    80 dB
    125 Wa s (RMS)
    Yes, 0 or 180 degrees
    Class AB
    Yes
    Yes
    Yes
    220-240 volts, 110-120 volts for certain markets
    1.6 Amp semi delay 230 volts opera on,
    3.15 Amp semi delay 115 volts opera on
    10.5 x 11.75 x 11.75 in., (266.7 x 298.4 x 298.4 mm)
    Including Feet and Rear Panel Controls
    26 lbs. (11.7 kg)
    Gloss Piano Black or White Lacquer

    Net Weight:
    Finish:
    Supplied Accessories
    Mains Lead:
    Yes
    Neutrik Speakon Interconnect: Yes (10 Meters Nominal)
    Users Manual:
    Yes

    In the interest of product improvement, REL Acous cs Limited reserves the right to alter these specifica ons without no ce.

    19



  • Page 21

    REL Acous cs Limited
    North Road, Bridgend industrial Estate . Bridgend, CF31 3TP . United Kingdom
    Telephone: +44 (0)1 656 768 777 . Fax: +44 (0) 1 656 766 093
    Web: www.rel.net






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