Art Pro VLA II инструкция обслуживания

Pro VLA II™ PROFESSIONAL TWO CHANNEL VACTROL ® /TUBE LEVELING AMPLIFIER USER’S GUIDE[...]

IMPORTANT SAFETY INSTRUCTIONS – READ FIRST This symbol, wherever it appears, This symbol, wherever it appears, alerts alerts you to the presence of uninsulated you to important operating and maintenance dangerous voltage inside the enclosure. Voltage in structions in the accompanying literature. that may be sufficient to constitute a risk of shoc[...]

Pro VLA II  PROFESSIONAL TWO CHANNEL VACTROL ® /TUBE LEVELING AMPLIFIER IMPORTANT SAF ETY INSTRU CTIONS – RE AD FI RST .......................................................................... 1 INTRODUC TION ................................................................................................................... ................. [...]

INTRODUCTION Thank you for purchasing Applied Research and Technology ’s Pro VLA II  . Offering a superb level of sound quality, the Pro VLA II  has a unique design that will enhance the sonic textures of your audio system for years to come. The Pro VLA II  is one of the finest audio compressors available. Developed in partnership with s[...]

Unpacking Your Pro VLA II  was packed with care at the factory. The shipping carton was designed to protect it during initial shipment. Please retain this carton for use in transporting the Pro VLA II  when it is not installed in a rack, or in the unlikely event that you need to retu rn your Pro VLA II  for servicing. The shipping carton s[...]

FRONT PANEL CONTROLS and INDICATORS Power The POWER switch turns the power on and off to the unit. The Pro VLA II  should be turned “on” with all monitor levels turned down to protect against any “thumping” caused by power up. Likewise, the Pro VLA II  should be turned “off” after turning all monitor levels down. When the POWER sw[...]

FIGURE 1 – Channel 1 Controls Output Level Control The OUTPUT LEVEL control serves two functions. The CH1 knob always controls the output level of CH1, but can also serve as a “MASTER” output level when the Link Mode is active. The fully counter-clockwise position of the knob mutes the output. The CH2 OUTPUT LEVEL control operates as a standa[...]

Release Control The RELEASE control sets the time the Compressor/Limiter takes to increase the gain after the input level drops. Longer settings maintain the dynamics of the input si gnal, while shorter settings reduce the dynamics. Shorter settings will also increase the apparent reverber ation, and at extreme gain reduction settings, lead to “b[...]

FIGURE 2 – LED Output Meter and Link Switch LED Output Meter This meter displays both average and peak levels of the output signal. The LED labels indicate how far the output is away from full maximum output in dB. In each bargraph, a single LED is held on for a little over one second, displaying the peak level. Some peaks may not be audible, but[...]

REAR PANEL I/O The Pro VLA II™ XLR connectors follow the AES standard of: Pin 1 = Ground, Pin 2 = Hot (+), Pin 3 = Cold (-). The balanced 1/4” phone jacks are typical TRS connection s: Tip - Hot (+), Ring - Cold (-), Sleeve - Ground. Balanced Inputs The Pro VLA II™ provides both an XLR and 1/4” input jack. Both jacks are balanced. The 1/4?[...]

FIGURE 3 – Rear Panel Balanced Outputs The analog output of the Pro VLA II™ is available on both a 1/4” TRS balanced ja ck and an XLR jack. This output is active pseudo balanced. The output has a 100 Ohm impedance into a balanced or unbalanced loa d. The LED and analog VU meter monitor the level present at this output. “0” VU on the analo[...]

APPLIC ATIONS Compressor/ Limiter The main application of the Pro VLA II™ is to control the dynamic range of an au dio signal. Plug a line level (post preamplifier or other gain stage) source into either input, and set the threshold and output controls to provide the desired amount of compression to the input signal. Stereo Mix and Mastering Beca[...]

WARRANTY INFORMATION Limited Warranty: Applied Research and Technology will provide warrant y and service for this unit in accordance with the following warrants: Applied Research and Technology, (ART) warrants to t he original purchaser that this product and the components thereof will be free from defects in wo rkmanship and materials for a perio[...]

SERVICE The following information is provided in the unlik ely event that your unit requires service. 1) Be sure that the unit is t he cause of the problem. Check to make sure the unit has power, all cables are connected correctly, and t he cables themselves are in work ing condition. You may want to consult with your dealer for assistance in troub[...]

SPECIFICATIONS Input Impedance Balanced/Unbalanc ed ................................................................ 10K Ohms Maximum Levels Range Swit ch ............................................................................. +4dB u/-10dBV selectable Inputs .....................................................................................[...]

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