Audio and Video Distribution Amplifiers

VDA-1B,3B   Video Distribution Amplifier      $450 - $650

 

The VDA-1B is a self-contained broadcast-quality video distribution amplifier with six source-terminated 75-Ohm outputs and one high-impedance looping input.  Components and circuit design were carefully chosen to provide flat response, low signal distortion, maximum reliability and good long-term stability.  Front panel mounted gain control and test points are provided.  New circuitry provides automatic DC offset control on the outputs.  The 1.75 by 19 inch rack-mounting package is available with either one or three independent amplifiers with a common power supply.  Amplifiers may be operated with separate inputs or looped together to provide as many as eighteen outputs from a single source.

  • Wide bandwidth integrated amplifiers.

  • DC output coupling.

  • Looping Hi-Z input.

  • Six isolated 75-Ohm source-terminated outputs.

  • Models available with 1 or 3 1x6 amplifiers.

  • Low cost Broadcast performance

  • Front panel 3 dB to +12 dB gain adjust.

  • Front panel input and output test points

  • Auto DC offset

 


 

ADA-1A/3A   Audio Distribution Amplifier   $450 - $650

 

The ADA-1A/3A is a broadcast quality audio distribution amplifier providing six balanced 600-ohm source-terminated outputs from one-high impedance bridging input per amp x 3 amps.  Both inputs and outputs may be connected to provide balanced or unbalanced circuits.  Outputs are independent precision integrated amplifiers, providing accurate output balance.  Gain is adjusted with a 25-turn potentiometer for ease and accuracy of control.  Critical design specifications such as response, distortion and noise have been chosen so that the amplifiers will suit the most critical professional user.  Amplifiers may be operated with separate inputs or bridged together to provide twelve or eighteen outputs from a single source.

  •  Integrated circuit amplifiers.

  • High impedance input, balanced or unbalanced.

  • Models available with one or three 1 x 6 (600 ohm balanced) or 1 x 12 (150 ohm unbalanced) source-terminated outputs.

  • Front panel gain adjust (Off to +25dB).

  • Models available with one or three 1 x 6 amplifiers.

  • Low Cost-broadcast performance

  • Front panel input and output test points.

 


 

SAV-1A   Stereo Audio and Video DA                      $750

 

     The SAV-1A is a self-contained, broadcast quality video/stereo audio distribution amplifier providing six independent output channels in a 1.75 x 19 rack-mounting unit.  The audio section provides six isolated stereo (twelve mono) 600 ohm balanced outputs from a single stereo (dual mono) high impedance bridging input.  The video section provides six independent source-terminated 75-ohm outputs from a single high impedance looping input.  Outputs are independent precision integrated amplifiers for accurate balance.  Gain is adjusted with front panel 25-turn potentiometers.  The amplifier components have been specially chosen and the circuitry specifically designed for flat response, low distortion, maximum reliability and good long-term stability.  The video amplifiers contain automatic DC offset circuitry to minimize output drift.

  •  Complete 6-output distribution of video and stereo audio.

  •  Wide bandwidth integrated amplifiers.

  •  Front panel input and output test points.

  •  Front panel gain adjustments.

  •  Low cost broadcast performance.

SPECIFICATIONS

 

Audio Section

Inputs:                        0 dBm nominal, +8 dBm maximum; transformerless 200K ohm balanced or unbalanced bridging.

 

Outputs:                      6 stereo (12 mono) 660 ohm balanced or 12 stereo (24 mono) 150 ohm unbalanced.

 

Gain:                           25 dB, continuously variable from full Off.

 

Frequency                  

Response:                   ±0.5 dB, 10 Hz            to 30 kHz.    

 

Hum and Noise:            -80 dB at 20 dBm output.

 

Output Isolation:            Greater than 50 dB.

 

Distortion:                  0.1% or less.

 

Connectors:                Terminal Strips.

 

Video Section 

Input:                          0.5 to 2.0 V p-p, 50K ohm looping.

 

Outputs:                      6, source terminated in 75 ohms, 3 V p-p maximum output.

Frequency

Response:                   ±0.1 dB to 5 MHz; ±0.2dB to 10 MHz.  

 

Diff. Gain:                     Less than 0.1%, 10 to 90 APL.

Diff. Phase:                   Less than 0.1%, 10 to 90 APL.

 

Tilt:                              Less than 1% (DC coupled).

Hum and Noise:           60 dB below 1 V p-p output.

Output Isolation:         Greater than 45 dB at 3.58 MHz.

Connectors:                       BNC

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