RCF TTL33-A Operator's Manual
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RCF TTL33-A Operator's Manual

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TTL33-A / TTL31-A
OPERATOR MANUAL
Version 1.2

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Summary of Contents for RCF TTL33-A

  • Page 1 TTL33-A / TTL31-A OPERATOR MANUAL Version 1.2...

  • Page 3: Table Of Contents

    AUDIO CONNECTIONS AND CABLING SIGNAL CABLE DAISY CHAINS THE TTL SYSTEM INPUT PANEL LEDS GENERAL RIGGING WARNINGS AND SAFETY PRECAUTIONS “RCF SHAPE DESIGNER” SOFTWARE AND SAFETY FACTOR RIGGING THE SYSTEM RIGGING SYSTEM RCF TTL33-A FLY-BAR RCF TTL31-A FLY-BAR RIGGING PROCEDURE...

  • Page 4: Transducers Technology

    Thanks to digital amplifi ers, high power neodymium transducers and well designed cabinet and mechanics the TTL33-A and TTL31-A are unique products and offers the maximum output per size and weight; acoustically are “fully horn loaded”...
  • Page 5 Those devices are usually creating impulse response problems and acoustic loads that are changing with the frequency. In the TTL33-A/TTL31-A horn design, thanks to the very small overall diameter of the drivers, the spacing between ND1411-MT centres of emission in the array application is only 70 mm. Thanks to this small spacing it has been possible to equalise the different paths with a simple straight horn, with a very simple design that avoids refl...

  • Page 6: Signal Processing

    INPUTS The TTL33-A/ TTL31-A input section offers XLR input, XLR output for daisy chaining, and sensitivity control (+ ∞ , -2 dB). A set of 5 switch is used for parameters and confi guration control: air absorption, cluster size, low frequencies cut off.
  • Page 7 CABINET AND MECHANICS The TTL33-A/TTL31-A cabinet is in baltic birch plywood, coated with high resistance epoxy paint. The wood quality, the small thickness in conjunction to a proper internal bracing, the metal structure design make this cabinet very light and robust.

  • Page 8: General Safety Instruction And Warnings

    WARNING • To prevent the risk of fi re or electric shock, never expose this equipment to rain. • The system TTL33-A/ TTL31-A should be rigged and fl own by professional riggers or trained personnel under professional riggers’ supervision. • Before rigging the system carefully read this manual.
  • Page 9 12. RCF Spa. strongly recommends this product is installed by professional qualifi ed installers (or specialised fi rms) who can ensure correct installation and certify it according to the regulations in force. The entire audio system must comply with the current standards and regulations regarding electrical systems.

  • Page 10: Power Requirements And Set-Up

    POWERING FROM THREE PHASE When the TTL33-A/TTL31-A system is powered from a three phase power distribution it is very important to keep a good balance in the load of each phase of the AC power. It is very important to include subwoofers and satellites in power...

  • Page 11: The Ttl System

    The TTL33-A/TTL31-A input circuit presents a 100 KOhm input impedance. The total input impedance seen as a load from the audio source (ex. audio mixer) will be: •...
  • Page 12 7 GREEN - POWER LED. This led is ON when the system is connected TTL33-A/TTL31-A to the AC power source and the main on/off switch is in position 1. INPUT PANEL LEDS 8 GREEN - SIGNAL LED. This led is ON when the audio input signal The input panel presents 4 system LEDs: is superior to -20 dB.

  • Page 13: Rigging The System

    TTL33/ TTL31-A mechanics are built with certifi ed UNI EN 10025-95 S 235 JR Steel. RCF prediction software calculates forces on every single stressed part of the assembly and shows the minimum safety factor for every link. S 235 JR is a structural steel and has a...
  • Page 14 In this case the front links are in compression and the rear links are supporting the total weight of the system plus the front compression. Always check very carefully with the “RCF Shape Designer” software all this kind of situa- tions (even with a small number of cabinets).

  • Page 15: Rigging System

    RIGGING SYSTEM The TTL33-A/TTL31-A module is provided with 4 rigging bars, 2 in the front and 2 in the rear corners. The rigging bars are securely connected to front and rear metal corners. Front and rear metal corners are securely connected to the cabinet. The rigging system is made of rigging bars and metal corners in sequence.
  • Page 16 8 CORNER DOUBLE-MOTOR PICK-UP POINT. 9 CORNER DOUBLE-MOTOR PICK-UP POINT. 10 9 CENTRAL PICK-UP POINTS. The TTL31-A system must be suspended using the RCF TTL31-A fl y bar FRONT BRACKETS, FRONT AND REAR MOUNTING: Front brackets in transport position Tilting the front brackets...
  • Page 17 THE 3 POSSIBLE PICK-UP SYSTEMS FOR THE TTL33-A/TTL31-A FLY BAR ARE THE FOLLOWING: SINGLE MOTOR - CENTRAL PICK-UP DOUBLE MOTOR - CENTRAL FRONT-BACK PICK-UP DOUBLE MOTOR - 4 CORNERS PICK-UP WARNING • Always check that the rigging motors rating exceed the total load to be suspended.

  • Page 18: Rigging Procedure

    2 Connect the second pin on the front bracket to make sure that the connecting bracket is vertical 3 Connect the front bracket to the fi rst TTL33-A/TTL31-A cabinet using 2 quick lock pins...
  • Page 19 4 Reverse and connect the 2 rear bracket to the fl y-bar using 2 quick lock pins 5 Connect the second cabinet to the fi rst always starting from the 2 front brackets 6 Reverse and connect the rear brackets of the second cabinet using the hole for the proper angle.
  • Page 20 TTL33-A/TTL31-A RIGGING SYSTEM TTL33-A/TTL31-A FLOWN SYSTEM WARNING • Always make sure that each quick locking pin is properly entered in the right position and securely locked. • Always make sure that rear left and right angle set-up are the same.

  • Page 21: Ttl33-A Ground Stacking

    TTL33-A GROUND STACKING The mechanical design of the suspension system allows the TTL33A system to be either fl own or ground stacked. Either method requires the array frame, the FLY BAR TTL33A. Even the smallest of arrays benefi t from a careful review of what vertical coverage is being created, and how that affects the liste- ning environment.
  • Page 22 TTL33A loudspeakers can be stacked by themselves on the FLY BAR TTL33A, or can be placed on top of TT+ subwoofers (with the same FLY BAR TTL33A fi tted with the optional STCK BAR TTL33A rigging frames) pinned to the grid. Ground stacking confi...
  • Page 23 Connect front bracket of the fi rst TTL33-A cabinet using 2 quick lock pins The baffl e of the bottom box in a stacked array does not necessarily have to be parallel to the stage or the array frame. It...
  • Page 24 The bottom box in a stacked array can be tilted with 2 degrees steps to obtain proper coverage patterns (from +11° to –8°) as shown in the fi gure. Reverse and connect the 2 rear STCK BAR TTL33A bracket to the fi rst enclosure using the hole for the proper angle and quick lock pins Add TTL33A cabinets one by one as indicated for fl...

  • Page 25: Rcf Ttl33-A Kart

    RCF TTL33-A KART The heavy duty RCF TTL33-A Kart can be use to easily transport up to 4 TTL33-A cabinets. The cabinets and Kart are fully compatible and it is possible to easily transport TTL33-A cabinets in straight or splayed confi...

  • Page 26: How Line Arrays Work

    In the horizontal pattern of the array, RCF wave guide horns work to produce a wide 100-degree coverage for TTL33-A/TTL31-A. Due to the copla- nar symmetric arrangement of components, the horizontal coverage is symmetric with respect to the 0°...
  • Page 27 This 100° coverage angle also defi nes the recommended limit for the relative angle between TTL33-A/ TTL31-A arrays, for example, when main L/R FOH TTL33-A/ TTL31-A arrays are oriented at zero degrees, offstage LL/RR arrays can be oriented at up to 100° relative to the main L/R arrays while maintaining a 6-7 metre separation between arrays in order to maximize overall system coverage while reducing the audible effects of interference.

  • Page 28: Distance To The Far Field Of A Line Array

    DISTANCE TO THE FAR FIELD OF A LINE ARRAY* (* from AES Convention paper Presented at the 110th Convention 2001 May 12-15 Amsterdam) The analysis of line arrays relies on a far fi eld assumption, that is, that the distance to the point of observation P is large compared to the length of the array.
  • Page 29 0°, 2°, 6°, 12°, 20° and so on. RCF Shape Designer calculates the optimum progressive curvature for a given audience area. The progressive curvature produces a more consistent frequency response from the front rows to the rear seats than often used J-shaped arrays having a straight, long throw section at the top and a curved lower section.
  • Page 30 LR confi gurations. When using the LCR confi guration for live music applications, three TTL33-A/TTL31-A arrays can be installed with the C array at 0 degrees and the L/R arrays panned offsta- ge up to 50 degrees (for speech reinforcement, L/R arrays can be panned offstage up to 100 degrees to optimise coverage and intelligibility).
  • Page 31 MULTIPLE ARRAY (>100° horizontal coverage) When the horizontal coverage of a TTL33-A/TTL31-A array (100° nominal) is not suffi cient, it is not recommended to place a second array directly beside the fi rst one. The best approach is to utilize a second array which is focused on another portion of the audience (typically at 60°...

  • Page 32: Array System Design

    This discussion represents, of course, just a basic approach. Given the infi nite variety of venues and performers, users will fi nd themselves needing to solve specifi c problems in specifi c situations. RCF Shape Designer software designed to help calculate optimum splay angles, aiming angles, and fl...
  • Page 33 USING RCF SHAPE DESIGNER SOFTWARE Once you have installed RCF Shape Designer, it will be visible as a shortcut in All Programs via your Windows Start button. A single click on the RCF Shape Designer tab will open the following page:...
  • Page 34 Filling the blank tabs it’s possible to start the program: ENTERING VENUE DATA For best results, planes should be used as follows: Floor is used to simulate the main fl oor area from the stage to a rear bleacher or boundary. Plane 1 is used to simulate any audience continuation behind Floor (e.g.
  • Page 35 For planes 1 and 2 Elevation refers to the elevation (height) of the front of the plane. For plane 1 and 2 Distance relates to the actual distance from the front of the array to the start of the plane. For all planes selecting Seated or Standing places ear level at 1.3 or 1.7m above the respective plane.
  • Page 36 RCF SHAPE DESIGNER RESULTS VENUE PAGE • Graphical representations of the array and the venue • Aiming splay angle between each pair of enclosures ARRAY PAGE • Height of the array and trim height to the bottom of the array from the fl oor •...
  • Page 37 MECHANICS PAGE • Cluster Mechanical specifi cations • Mechanical safety factors PROCESSOR PAGE • DSP preset confi guration SPL & REPORT PAGE • On-axis aiming angle for each enclosure as a difference from 0° horizontal • Various angles and throw distances calculated from the venue’s dimensions •...
  • Page 38 MANUAL MODE RCF Shape Designer works in either of two basic ways: AUTOMATIC MODE (DEFAULT SETTING): The RCF Shape Designer will select the optimum enclosure splays, array aiming angle, fl y-bar pick point and DSP preset confi gurations. MANUAL MODE: this provides a partial control over the array’s confi guration. The enclosure splays can be increased with a progression of 2°...

  • Page 39: Climatic Effects

    CLIMATIC EFFECTS When working in large venues or outdoors it’s always necessary to remember that sound propagates through air and is affected by air temperature, humidity and wind. EFFECTS OF TEMPERATURE GRADIENTS ON SOUND PROPAGATION If sound is propagated over large distances outdoors, its behaviour may seem erratic.
  • Page 40 (over and above the 3dB per doubling of distance) at 100m from the column. The incredible high frequen- cy efficiency and headroom of the TTL33-A can prove beneficial here. Air absorption also varies with temperature and is notoriously difficult to predict with accuracy.

  • Page 41: Amplifier Gain Settings

    PHYSICAL SET-UP There are 8 splay angles engineered into the rigging for the TTL33-A/TTL31-As. These are set by changing the splay between the rear of the enclosures rather than the front. This means that the fronts of all enclosures are always tight- packed.
  • Page 42 The TTS18-A subwoofers may either be ground stacked, fl own as part of a TTL33-A array, or fl own separately alongside a TTL33-A array. A general recommendation is to use TTL33-A and TTS18-A in a ratio of one array module to one sub for outdoor applications and with respect of TTS28-A in a ratio of two array module to one sub for outdoor applications.

  • Page 43: Parts Inspection Check List

    DO NOT USE THE AFFECTED PARTS. The following parts must be regularly inspected: • TTL33-A/TTL31-A FLY-BAR (visual inspection, soldering inspection, screws securely fi xed inspection, pin-holes inspection using a pin) •...
  • Page 44 TECHNICAL SPECIFICATIONS TTL33-A TTL31-A ACOUSTICAL ACOUSTICAL Operating frequ. range 60 - 20.000 Hz Operating frequ. range 60 - 20.000 Hz Max SPL 135 dB Max SPL 132 dB Horizontal Coverage 100° Horizontal Coverage 100° Vertical Coverage 15°, depending on confi guration Vertical Coverage 15°, depending on confi...

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