Summing up | Turbosound LMS-D6, LMS-D24, LMS-D26 manual

user manual

TA-890

Summing up

Generally left and right bass stack are deployed. These should be kept as far apart as possible, and stacked high or fanned to minimise beaming. Toeing these out can hep to reduce cancellation between left and right stacks.

On large sites or in situations where left to right cancellation is particularly bad, a fan shaped array will solve the problem. When possible smoother coverage can be obtained by using additional processing to create a Bessel array.

If noise pollution is a serious problem and space and logistics permit it is desirable to create an end-firing array. Whilst this will not help solve any left to right cancellation this will greatly reduce the amount of energy produced behind the array.

Whenever practical, when spacing the enclosure ¼ of a wavelength apart do so at around 80Hz with Aspect TA-890L enclosures but lower at 60Hz when used in combination with the TSW-218.

Deployment of large scale sound systems is often a compromise it is advisable to explore these possibilities well in advance of a show to determine the best possible results for the venue. Always remember that large amounts of LF energy a short distance from the audience area may well cause hearing damage if deployed poorly. Turbosound accepts no responsibility for loss of hearing due to the misuse of our systems.

TA-890 user manual Page 45

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Turbosound LMS-D6, LMS-D24, LMS-D26 user manual Summing up

Contents

Aspect TA-890 System TA-890 TA-890 TA-890 Amplifier Rack Signal Wiring Output Connections Products EC Declaration of Conformity Introduction Turbosound Aspect System ConceptsTurbosound Polyhorn TA-890 Aspect TA-890 Turnkey System Concept Loudspeaker Management System LMS Concept Power AmplifiersLMS-D24, LMS-D26 and LMS-D6 Loudspeaker Management Systems Amplifier Racks Digital Controllers Aspect Loudspeaker ComponentsTA-890L Low Frequency Enclosure TA-890H Mid-high Enclosure TSW-218 Subwoofer TA-890 Transportation Aspect Flying Systems Overview Flying and Stacking Gigmate Acoustic Simulation Setting up a Venue Overview Running Turbosound GigMate / Ease Focus for the first time System Setup Designing a system TA-890 TA-890 Changing the system Theatre-style venue 3-wide flown cluster @ 1kHz Safety Notes on Rigging Sample Certificate of Load Test Flying Hardware Wide and Narrow Flybar Settings Single A-System Flybar FB-890/1A TOP View Bottom View Figue 3. Triple ‘A’ System Flybar FB-890A/3W TS-890 Tilting Straps FC-890 Flying Chains TA-890 Four-wide hang using MB-890 and FB-890/2A ‘A’ System Flygear Integral Flying Hardware Connecting Cabinets ‘A’ System Connecting Flying Chains to the CabinetDrop Link Swing Latch Setting Vertical Angles ‘A’ System Attach buckle Attaching the Tilt Straps Turbobass Directivity Bass Enclosure arrayingAiming directivity of the stack TA-890 ABC DEF Typical Left to Right problem Bass in a line Creating Directional Bass arrays Fanned bass General observations of long lines of bass Bessel Array End firing array Summing up Ground stacking Mechanical Installation General features & facilities UnpackingLMS Series Loudspeaker Management Systems Introduction LMS-D6 Front Panel Functions LMS-D6 Rear Panel Functions Mains Power Safety Earthing Voltage SettingAC Power Fusing Powering Up Input and Output Connector Wiring Time correction for loudspeaker driver placementAudio Connections LMS-D24 and D26 Loudspeaker Management Systems Features Front Panel Functions TA-890 Rear Panel Functions Operating the LMS-D24 and D26 Selecting a Factory PresetStarting up Creating a Crossover Navigation and Viewing Parameters A Freq Width Gain EQ1 100Hz 1.4Q 0.0dB Navigation Out1 Freq Width Gain EQ1 100Hz 1.4Q 0.0dB Presets Preset Recall Preset Store Preset Name Store My System Output DSP block diagram Input DSP block diagramDSP Processing Layout Stereo / Mono Formats Input Channels DSP Processing A Freq Shape HPF 20.0Hz LR24 Parametric Equalisation High and Low shelving filtersParametric filters Delay Output ChannelsGain and Polarity High and Low Pass Filters Out1 Freq Shape LPF 2.50k LR24 Out1 Freq Slope Gain EQ- 100Hz 12dB 0.0dB Routing Limiters Utility functions Utilities Audio Input Connectors Racking, Cables and Connections AMP-890 Aspect System Amplification Rack Input Connections Options Output Connections Amplifier Rack Signal Wiring Mid-High Outputs Break-out Cables NL4 bass Extension Cables Break-out cables NL8 mid-high Mains Connections General Features & Facilities T-45 High Efficiency Audio Power Amplifiers Front Panel Functions T-25 Front Panel Functions T-45 Mechanical Installation Audio Connections & Controls Voltage Range Gain and Sensitivity Settings PolarityInput Impedance Damping Factor Attenuation & Gain Setting Cooling System Long Speaker Lines Maintenance To rotate the horn moulding from ‘A’ mode to ‘B’ mode Removal of the high frequency driver To rotate the horn moulding from ‘B’ mode to ‘A’ mode Removal of the high-mid frequency driver Removal of the low-mid frequency drive units General Maintenance Paintwork TA-890 Technical Specifications Serial Numbers Warranty TA-890