GTO C-12

Flyable subwoofer

Overview:

• Compact high efficiency full range element incorporating 2 x 12” LF drive-units, 4 x 6.5” MF drive-units and 2 x 3” diaphragm HF drivers on a D.P.R.W.G. waveguide, coupled to an Outline ‘V-Power’ baffle.
• Very high power handling (3200 LF + 2400 MF + 1000 HF watts AES peak) and sound pressure (147.5 dB SPL peak @ 1 metre – full space).
• Light weight: 12 elements with 1 GTO DF from a single 1 ton chain motor.
• Light weight; 12 elements with 1 GTO DF from a single 1 ton chain motor.
• Equipped with the high-precision, lightweight, integrated GTO rigging system to allow accurate aiming and coverage.
• Ideal for theatre, arena, festival and stadium productions

The Outline GTO C-12 is a compact line-source enclosure designed to provide a flexible, powerful and almost infinitely configurable loudspeaker system for professional sound reinforcement applications. It has been developed in response to customer demand for a multi-purpose loudspeaker system that can be efficiently transported and deployed, but still produce the power, intelligibility and control necessary to handle a wide range of events and locations.

It is a direct descendent of the mighty GTO, a system which, since its launch in 2011, has wowed production managers and sound engineers all over the world with its combination of visceral power and precision coverage. GTO C-12 develops the high transducer density concept pioneered by GTO by packing eight drive units into a remarkably compact cabinet, containing two 12” low frequency drivers, four 6.5” midrange units and two 3”-throat compression drivers, mounted on the same award-winning DPRWG waveguide found in its big brother.

GTO C-12 retains a key element from GTO in the V-shaped front baffle for which we were awarded an international design patent in 2002, and to which we refer as the ‘V-Power Concept’. This ground-breaking idea facilitates superior acoustical coupling between high-frequency modules, thus producing a smooth yet extended HF response. It also creates the ideal ‘unbroken baffle’ shape through an array which minimises diffraction and deterioration, especially in the far field.

The C-12 cabinet is 21.6% smaller in the vertical plane than the GTO, while overall cabinet weight has been reduced by a remarkable 30% – in addition to some clever engineering, our use of a special aluminum alloy for the integral rigging hardware contributes to this major weight saving. This unique system also provides twelve different adjustment settings in the angle between connected GTO C-12 cabinets, adding further to the real-world flexibility and adaptability of the loudspeaker.

With its technology derived completely from the large format dual 15” GTO, the new GTO C-12 produces output power surpassed only by its ‘big brother’. The footprint of the new cabinet is exactly the same as all the other modules in the GTO range, allowing full mechanical compatibility with GTO, GTO-SUB, GTO-LOW and GTO-DF in terms of rigging, flying hardware and wheelboards. GTO C-12 is also fully compatible with the Outline DBS and LAB21 subwoofers, and we can supply suitable DSP controller presets for any combination of GTO C-12 and Outline subwoofers.

GTO C-12 shares a common voicing with our other concert-series products, allowing them to be freely integrated to create system designs to handle any application.

Performance:

• FREQUENCY RESPONSE (-10 dB): 45 Hz – 18 kHz
• AVERAGE DISPERSION
  • Horizontal: 90°
  • Vertical: Depending on array configuration
• IMPEDANCE
  • Low: 2 x 8 Ω (min 2 x 6 Ω)
  • Mid: 8 Ω (min 6.6 Ω)
  • High: 16 Ω (min 16.6 Ω)
• POWER – WAES
  • Low: 2 x 400 (2 x 1600 peak)
  • Mid: 600 (2400 peak)
  • High: 250 (1000 peak)
• MAX SHORT-TERM SPL @ 1 m, free-field*: 147.5 dB SPL calculated using +10 dB crest-factor signal

GTO-SUB

Flyable subwoofer

Overview:

• Ultra Low frequency extension as part of the GTO turnkey solution
• Modular design with identical footprint to all other GTO system elements
• Very high power handling (9600 watts AES peak) and sound pressure (147 dB SPL peak at 1 metre, half-space)
• Connection through 2 x NL4 (wired in parallel) and 2 x LKI-8 (wired in parallel)
• Equipped with the high-precision, light-weight GTO rigging system to allow a total of 16 cabinets flown in standard (vertical) configuration, or up to 12 deep if the application requires various splay angles or positive / negative tilting.
• The precise configurations may be checked and adjusted using Outline’s proprietary ‘OpenArray’ 3D software program.

The GTO-SUB is a dual 18” subwoofer enclosure using phase inversion type loading, which, coupled with the use of several innovative loudspeaker technologies, allows it to deliver consistent performance at the highest levels over many years. The enclosure is tuned to a low frequency by way of a long port with a large surface area. This allows the GTO-SUB to obtain a wide passband and a considerable extension towards the bottom end of the frequency response. Analysis and careful design has completely removed the usual ‘port turbulence’ associated with traditional cabinets using this loading method.

The GTO-SUB is primarily intended for large-scale applications, as part of the GTO-turnkey solution. It is ideally suited to projects that demand no-compromise audio quality. The GTO-SUB addresses an increasing demand for accurate, high definition bass reproduction. This product is capable of outstanding electrical to acoustic power conversion but still within a compact package. The performance is aided by the careful choice of the reflex alignment and the construction of the cabinet. The GTO-SUB has a useable frequency range at -10 dB of from 28 Hz to 160 Hz, while the response is just +/-3 dB from 34 Hz to 107 Hz. The max sensitivity is 97 dB in free-field and 103 dB in half-space. The maximum continuous AES power of 2400 W gives 131 dB SPL in free-field and 137 dB SPL in half-space, while peak values can reach 147 dB SPL in half-space.

The GTO-SUB’s high quality build finish is constructed from 18 mm (phenolic-glued) baltic-birch plywood and includes bracing throughout to reduce box vibration modes and to increase the overall cabinet rigidity. The overall shape of the loudspeaker has been created to avoid internal resonances. The outer finish applied is a scratch-resistant, waterproof black paint and the front of the cabinet is protected by an anti-resonant steel grille. When used in conjunction with the GTO mainframe-bar, each element’s integral rigging allows up to 16 cabinets to be flown in standard applications. If required, a splay angle of 3 degrees can be selected via the integral rigging, thus allowing the overall shape of flown clusters to be adjusted according to the coverage requirements.

GTO trolley-board designed for ‘3-up’ aids handling and transporting on even or uneven surfaces. Recessed integrated handles in the side panels of the cabinet are used for a positive grip during handling. Weather protective shower caps also form part of the turnkey -package. Connection to the loudspeaker comes in the form of two types of connector, both in pairs and all wired in parallel. These are: two NL4s wired pins 1+/1- for the first woofer and pins 2+/2- for the second woofer, plus two LKI-8 wired pins A/B for the first woofer and pins C/D for the second woofer.

Performance:

• FREQUENCY RESPONSE (-10 dB): 28 Hz – 160 Hz
• AVERAGE DISPERSION
  • Horizontal: Quasi-omnidirectional
  • Vertical: Depending on array configuration
• IMPEDANCE: 2 x 8 Ω (min 2 x 6.2 Ω)
• POWER – WAES: 2 x 1200 (2 x 4800 peak)
• MAX SHORT-TERM SPL @ 1 m*
  • 141 dB SPL (free-field)
  • 147 dB SPL (half-space)* calculated using +10 dB crest-factor signal

GTO-DF

Downfill element for GTO and C-12

Overview:

• Down-Fill element to form part of the GTO turnkey solution
• Modular design to offer identical footprint to all other GTO system elements
• Designed as the bottom cabinet within the array to cover the first section of the audience
• Designed for bi-amplification Very high power handling (3200 + 1000 watts AES peak) and sound pressure (max 144.5 dB SPL peak at 1 metre)
• Equipped with the high-precision GTO Rigging system to allow actuate aiming and coverage.
• Ideal in “live” arena, festival, and stadium concerts

The GTO-DF is a proprietary ‘Down-Fill’ enclosure incorporating a newly-designed waveguide based on phased audio paths. It is engineered to provide exceptionally high quality sound to the first several rows of the audience at an event, filling the sonic gap often experienced by event attendees who are seated near the stage. With its downward oriented constant directivity horn with embedded acoustic lens, it is designed to reside on the bottom of a GTO array.

GTO-DF is mechanically identical to, and acoustically matched with, the GTO full-range cabinet, so it can be easily added to a flying array. Unique to the GTO-DF is a vertical dispersion range of zero-degrees to minus 25-degrees to ensure precision aiming of the sound into the audience and not onto the stage. The development of this acoustic lens has facilitated a much more compact design than is normally associated with products of this type. The proprietary waveguide offers 120-degrees of horizontal coverage from 315 Hz to 17.5 kHz.

The GTO-DF is intended for large-scale applications, as part of the GTO-turnkey solution. The GTO range is ideally suited to projects that demand no-compromise audio quality. This product is capable of outstanding electrical to acoustic power conversion. The GTO-DF has a useable frequency +/-3 dB from 250 Hz to 17.8 kHz.

The sensitivity is 105 dB SPL (for the mid frequencies) and 101 dB SPL (high frequencies) in free field. A maximum continuous AES input power of 800 W (mids) and 250 W (highs) will provide a power output of 134 dB SPL in free-field (mids) and 125 dB SPL (highs), while peak output power values can reach 144 dB SPL (mids) and 135 dB SPL (highs).

The GTO-DF’s high quality cabinet is constructed from 15 mm (phenolic-glued) baltic birch plywood and includes bracing throughout to increase the overall cabinet rigidity. The outer finish applied is a scratch-resistant, waterproof black paint. GTO trolley-board designed for ‘2-up’ aids handling and transporting on even or uneven surfaces. Recessed integrated handles in the side panels of the cabinet are used for a positive grip during handling. Weather protective shower caps also form part of the turnkey -package.

Connection to the loudspeaker comes in the form of two types of connector, wired in parallel. These are: one NL4 wired pins 1+/1- for midrange drivers, pins 2+/2- for HF compression drivers plus one LKI-8 wired pins E/F for midrange drivers and pins G/H for HF compression drivers.

Performance:

• FREQUENCY RESPONSE (-10 dB): 200 Hz – 18.5 kHz
• AVERAGE DISPERSION
  • Horizontal: 120°
  • Vertical: from +0° to -25° (on axis -12.5°)
• IMPEDANCE
  • Mid: 8 Ω (min 6.8 Ω)
  • High: 16 Ω (min 16.7 Ω)
• POWER – WAES
  • Mid: 800 (3200 peak)
  • High: 250 (1000 peak)
• MAX SHORT-TERM SPL @ 1 m, free-field*: 144.5 dB SPL

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