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© 2004 Wohler Technologies Inc. ALL rights reserved

9

AMP2-VSDA/AV

and

AMP2-VSDA/AM

User Manual P/N

821576

Rev-

B

Section 2:

Operation

Figure-2a: Front Panel Features

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Summary of Contents for AMP2-VSDA/AM

Page 1: ...S Error Jumper Location 919050 PCB PPM Meter Specifications and Level Threshold Settings VU Meter Specifications and Level Threshold Adjustment AMP2 VSDA AV and AMP2 VSDA AM Interconnect Block Diagram AMP2 VSDA AM and AMP2 VSDA AV 2U Digital Audio Speaker Monitor With SDI Input and Output on BNC Two AES Inputs on BNC and XLR Two AES Outputs From SDI on BNC Four Analog Inputs on XLR Two Selected An...

Page 2: ... CA 94080 650 589 5676 Fax 650 589 1355 web www wohler com e mail support wohler com Congratulations on your selection of a Wohler Technologies AMP2 VSDA AV or AMP2 VSDA AM audio monitor unit We are confident it represents the best performance and value available and we guarantee your satisfaction with it If you have questions or comments you may contact us at All rights reserved Copyright held by...

Page 3: ...ALL rights reserved 3 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B Sect 1 General Features and Specifications General Features and Specifications Description Features Applications Specifications Installation Section 1 ...

Page 4: ...EEN LED The rear panel features an SDI input and loop through on BNC connectors two AES inputs on unbalanced BNC connectors two alternate AES inputs on balanced XLR connectors two AES outputs converted from the SDI input on BNC connectors four Analog outputs of the selected digital source on balanced Phoenix connectors a stereo analog output of the two channels assigned to the left and right speak...

Page 5: ...ach Side 4Ω Ω Ω Ω Ω RMS Bass 4Ω Ω Ω Ω Ω FrequencyResponse SixthOctave InputLevelforMaximum Output VolumeFullOn HumandNoise analog Distortion Electrical Distortion Acoustic InputOverload ConvertedAnalogOutS N ConvertedAnalogOutTHD MagneticShielding PowerConsumption AverageMaximum ACMainsInput SDI BNC AES BNC XLR Analog XLR XLR 70K Ω bal BNC 75 Ω unbal XLR 110 Ω bal 104 dB SPL 14 W transient 10 W co...

Page 6: ...ely attached to the front panel at eight points along its surface not just at the four corners of the chassis ears This feature will reduce or eliminate rear bracing requirements in many mobile portable applications The weight of internal components is distributed fairly evenly around the unit Audio Connections Connection of the audio feeds is straightforward Please refer to the system interconnec...

Page 7: ...Wohler Technologies Inc ALL rights reserved 7 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B Operation Front Panel Features Rear Panel Features Audio Amplifier and Speaker Configuration Section 2 ...

Page 8: ...ssing and holding an already selected channel button will allow further modification to the selection set Releasing all buttons accepts the new selection set Pressing and immediately releasing an already selected channel button will select only it and deselect all other channel selections Note that if channels assigned to either the left or right level meters are multi channel summed then the resp...

Page 9: ... 2004 Wohler Technologies Inc ALL rights reserved 9 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B Section 2 Operation Figure 2a Front Panel Features ...

Page 10: ...indicates an out of phase alarm condition AES SDI Digital Source Select Switch This two position toggle switch allows the operator to choose between the two digital input sources SDI or AES When this toggle switch is set to AES the unit will monitor the AES signals as input on the AES IN BNC connectors IN 1 and IN 2 on the rear panel Item C page 12 When this toggle switch is set to SDI the unit wi...

Page 11: ... 2004 Wohler Technologies Inc ALL rights reserved 11 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B Section 2 Operation Figure 2a Front Panel Features ...

Page 12: ...ctor AES IN 1 and XLR connector AES IN 1 AES Output From SDI Input Connectors 1 and 2 These two AES OUT FROM SDI BNC connectors output an AES digital signal as converted from the SDI IN input connector Item F and function regardless of any monitor selection settings The left AES OUT FROM SDI connector next to AES IN 1 outputs a signal converted from SDI sub group 1 channels 1 2 and the right AES O...

Page 13: ... 2004 Wohler Technologies Inc ALL rights reserved 13 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B Section 2 Operation Figure 2b Rear Panel Features ...

Page 14: ...lect Switch Item 8 page 8 These 3 pin male Phoenix connectors are configured for a balanced low impedance connection Phoenix connector pin out information is silk screened just above these connectors on the rear panel see Figure 2b Selected Analog Output Connectors These two 3 pin male XLR connectors are analog outputs of the selected source s as assigned to the left and right speakers The left co...

Page 15: ... 2004 Wohler Technologies Inc ALL rights reserved 15 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B Section 2 Operation Figure 2b Rear Panel Features ...

Page 16: ...racteristics The balance control attenuates the signal from the source so that the left and right bass frequencies summed together and reproduced in the woofer channel will also respond to the balance control Example If an audio signal of a voice speaking English is fed to the left A input and a voice speaking Spanish is fed to the right B input then the left speaker channel will reproduce the mid...

Page 17: ...cal Observations SDI to AES Converter Module PCB 919096 AES to Analog Converter Module PCB 919050 AES Digital Gain Fine Adjustment 919050 AES Error Jumper Locations 919050 PPM Level Meter Specifications and Level Threshold Settings VU Level Meter Specifications and Level Threshold Adjustment AMP2 VSDA AM Series Interconnect Block Diagram Section 3 ...

Page 18: ...e input stage and before the volume control section The signal pick off for the headphones is after the volume and balance controls Speaker muting is controlled by circuitry that senses connection of headphones to the jack The power amps are attached to an aluminum heatsink plate which is also connected to the circuit common for these devices The heatsink plate forms an operational module separate...

Page 19: ...2 first subgroup and channels 3 and 4 second subgroup from SDI Group ID 1 are demuxed before being input to the AES to analog conversion module 919050 Access to SDI Group ID 2 3 and 4 is optional and should be specified at time of order SDI to AES Converter Module PCB 919096 919096 Specifications Inputcharacteristics Receiver type Sensitivityperformance SDI input level Inputformats Audiosamplingra...

Page 20: ... Ω XLR connectors This module also features a four channel balanced analog line level output which can be configured with unbalanced 75 Ω BNC connectors or balanced 110 Ω Phoenix or XLR connectors 919050 Specifications Inputformats Digital to AnalogConversion Samplingrate Termination Analog out of digital source S N THD full output Max output of analog out Nominal output level for Full Code digita...

Page 21: ...page 14 Be sure to make measurement of the FULL balanced output NOT just between one of the outputs and ground 5 Locate trim pots P1 P2 P3 and P4 see Figure 3a below Adjust P4 channel 1 through P1 channel 4 for the desired analog level corresponding to the digital signal amplitude being supplied to the unit For example if your house Analog Digital correspondence is for a 18 dBfs digital level to c...

Page 22: ...nd AMP2 VSDA AM User Manual P N 821576 Rev B AES Error Jumper Locations 919050 To disable indication of faulty AES data and leave only indi cation of faulty reception place jumpers on both H14 and H18 See Item 5 page 8 for more information Section3 TechnicalInformation ...

Page 23: ...cifications and Level Threshold Settings LevelMeterType LevelMeterScale LevelMeterThreshold LevelMeterDynamics Mechanical StandardVU 0 to 8 dBv factory set to 4 dBv trimpot adjustable internal VU fullANSI LevelMeterType LevelMeterScale LevelMeterThreshold LevelMeterDynamics Mechanical Specify BBC 1 to 7 or EBU type 1 and 2 specified when ordered 6 0 4 or 8 dBv DIP switch selectable internal PPM Le...

Page 24: ... 2004 Wohler Technologies Inc ALL rights reserved 24 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B AMP2 VSDA AV and AMP2 VSDA AM Interconnect Block Diagram Section3 TechnicalInformation ...

Page 25: ...d AMP2 VSDA AM User Manual P N 821576 Rev B NOTE PCB layout and schematic support documentation is available upon request Wohler Technologies Inc 713 Grandview Drive South San Francisco CA 94080 650 589 5676 Fax 650 589 1355 web www wohler com e mail support wohler com ...

Page 26: ... ALL rights reserved 26 AMP2 VSDA AV and AMP2 VSDA AM User Manual P N 821576 Rev B Wohler Technologies Inc 713 Grandview Drive South San Francisco CA 94080 650 589 5676 Fax 650 589 1355 web www wohler com e mail support wohler com ...

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