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Turbosound TA-880 user manual Polarity, Input Impedance, Gain and Sensitivity Settings

Models: TA-880

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Polarity

user manual

TA-880

The amplifiers are designed to operate with fully balanced equipment. Ground loops or loss of performance may be experienced if connected to unbalanced sources. If it is unavoidable, however, the following wiring convention should be used.

Pin 1	Screen - connect to chassis of the unbalanced
	equipment, or left disconnected at the unbalanced end
Pin 2	signal hot
Pin 3	Signal cold

Polarity

In accordance with international standards, T series amplifiers are supplied with Pin 2 hot (+), so a positive (+V) input gives a positive (+V) output from the positive (+) output terminals.

Input Impedance

Each amplifier channel has an input impedance of 10kΩ, seen between pins 2 & 3 of the XLR.

When used with the LMS-D6 Loudspeaker Management System, distribution amplifiers are not required when a large number of T-25 or T-45 amplifier inputs are driven in parallel.

Gain and Sensitivity Settings

Gain settings are changed internally by simple jumper links. Two rows of pins marked - GAIN A and GAIN B - are situated on the input PCB (PCB701). A jumper link sets the gain and the settings are as follows:

Link 1 & 2	Gives 32dB gain
Link 3 & 4	Gives 26dB gain
Link 2 & 3	Gives approx 37.5dB gain

NOTE:

Factory setting is normally link 1 & 2 = 32dB gain.

TA-880 user manual

Page 80

Image 80

Turbosound TA-880 user manual Polarity, Input Impedance, Gain and Sensitivity Settings

Contents

Star Road, Partridge Green West Sussex RH13 8RY EnglandTel +44 01403 711447 Fax +44 ASPECT TA-880SYSTEMTA-880 TA-880 Features TA-880General Features & Facilities TA-880EC DECLARATION OF CONFORMITY TA-880INTRODUCTION Turbosound Aspect System Concepts TA-880The Aspect Polyhorn Concept TA-880Aspect TA-880Turnkey System Concept TA-880The Loudspeaker Management System LMS Concept LMS-D26/D6Loudspeaker Management SystemsAmplifier Racks TA-880Power Amplifiers Digital ControllersAspect Loudspeaker Components TA-880TA-880LLow Frequency Enclosure TSW-218SubwooferTA-880HMid/High Enclosure TA-880TA-880 TA-880HM High-MidEnclosureTA-880LM Low-MidEnclosure Transportation TA-880Aspect trapezoidal Flying System TA-880FLYING AND STACKING Overview TA-880GIGMATE ACOUSTIC SIMULATION TA-880System Setup Mapping PropertiesAudience Area RiggingDesigning a system TA-880TA-880 Now select the number of cabinets deep that you wish to hang or stack in the “Box Count” dropdown. Trim height, or PA wing height can now be set in the “Position” fieldTA-880 TA-880 The Audience Area graph at the bottom of the window shows the SPL, as specified in the SPL Mapping lists, on the selected Audience Area. The selected area is highlighted in the main window and the graph is repeated onto op each area, Selecting the “Combined Level View” tab will show the SPL across all areas simultaneouslySafety Notes on Rigging TA-880TA-880 Sample Certificate of Load TestFLYING HARDWARE Horizontal CoverageRequired Horizontal Coverage Number of ColumsTA-880 Wide and Narrow Flybar settingsVertical Coverage TOPVIEW BOTTOM VIEWTwo-widetrapezoidal flybar FB-880/2W TA-880Three-widetrapezoidal flybar FB-880/3W TA-880TOPVIEW BOTTOM VIEWFlying Chains FC-880 CHOKED CHAIN ASSEMBLY FC-880SSHORT CHAIN ASSEMBLY TA-880SW-880HFLYING SWORD SW-880HMFLYING SWORD BB AA SW-880LMFLYING SWORDFlying Swords TA-8800.59m Tilting StrapTA-880 TA-880 TA-880 TA-880 TA-880 3.Position the second cabinet directly underneath the first. Fit a BS-780biscuit into the top kelping braket of the lower cabinet to keep the backs of the boxes and act as the hinge. Lower the top cabinet and feed the swords into the sword boxes. Make sure that the biscuit engages into the bottom kelping bracket slot of the upper cabinet. The lower end of the swords will be visible through the handle boxes of the lower cabinetSword hole position Inter-cabinetangleTA-880 A B BTA-880 Flying a cluster of TA-880trapezoidal cabinetsSingle horizontal row 2 wide x 2 deep TA-880Harray 4 x FC-880choked chain assembly4 x SL-880safety linch-pin 2 x TS-890tilt strap TA-8803 wide x 3 deep TA-880Harray 6 x FC-880choked chain assembly30x SL-880safety linch-pin 3x TS-890tilt strap TA-880Tight-packedFlying Assemblies TA-880TA-880 TA-880 Bass Enclosure arrayingAiming - directivity of the stack Ground stacking TA-880Mechanical Installation LMS SERIES LOUDSPEAKER MANAGEMENT SYSTEMSIntroduction UnpackingLMS-D6LOUDSPEAKER MANAGEMENT SYSTEM TA-880TA-880 Mains PowerLMS-D6Rear Panel Functions Voltage Settings Safety EarthingAC Power Fusing Powering UpInput and Output Connector Wiring Time correction for loudspeaker driver placementAudio Connections TA-880TA-880 FeaturesLMS-D24AND D26 LOUDSPEAKER MANAGEMENT SYSTEMS Front Panel Functions Input Signal IndicatorsTA-880 Channel Select buttonsTA-880 for the current input or outputRear Panel Functions Expansion PortSecure Mode Switch Power InletSerial Comms Port Audio Output Connectors Audio Input ConnectorsSelecting a Factory Preset Operating the LMS-D24and D26 Starting upCreating a Crossover TA-880LMS-D26 Navigation and Viewing Parametersa b c TA-880LMS-D26 NavigationTA-880 Out1 Freq Width Gain EQ1 100Hz 1.4Q 0.0dBPreset Name PresetsPreset Recall RecallPreset Store PresetNAME PRESET TA-880DSP Processing Layout Input DSP block diagram Output DSP block diagramStereo / Mono Formats TA-880In A Delay 1.50ms In A Gain 0.0dBDSP processing Input Channels TA-880In A Freq ShapeHPF 20.0Hz LR24 TA-880Slope GainEQ1 100Hz 12dBOut1 Delay 1.50ms DelayOut1 Gain Pol 0.0dB Rev Output Channels Gain and PolarityOut1 Freq Shape LPF 2.50k LR24 High and Low Pass FiltersTA-880 LMS-D26Out1 Freq Slope Gain EQ - 100Hz 12dB 0.0dB Out1 Freq Width Gain EQ1 100Hz 1.4Q 0.0dBTA-880 LMS-D26Out1 Thresh LIM 4.0dB Out1 Source Inp ALimiters RoutingUtil Screen ParaEQ 100% BW=Q Utilities Utility functionsTA-880 LMS-D26Power Inlet Serial Comms Port Audio Output ConnectorsSwitch ConnectorsTA-880 AMP-890Aspect System Amplification RackRacking, Cables and Connections TA-880 OptionsInput Connections TA-880 Figure 1. Amplifier Rack Signal WiringOutput Connections Figure 2. Mid-HighOutputs Figure 3. Bass OutputsTA-880 CHANNEL 1 HFSOCAPEX PIN NUMBERS 17,18,19 NOT USED Break-outCables - NL4 bassTA-880 Break-outcables - NL8 mid-high Extension CablesTA-880 SOCAPEX PIN NUMBERS17,18,19 NOT USEDMains Connections TA-880General Features & Facilities TA-880Ch. A Front Panel Functions T-25TA-880 Front Panel Functions T-45 TA-880Mechanical Installation Mains PowerPowering Up Safety EarthingVoltage Setting Voltage RangeAudio Connections & Controls TA-880Gain and Sensitivity Settings PolarityInput Impedance TA-880Attenuation & Gain Setting Damping FactorTA-880 Output ConnectionsTA-880 Long Speaker LinesThe Cooling System APPENDIX A TECHNICAL SPECIFICATIONS TA-880TA-880H TA-880HMTSW-218 TA-880TA-880L APPENDIX B WARRANTY TA-880TA-880 Turbosound Limited Star Road Partridge GreenWest Sussex RH13 8RY United Kingdom