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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  

instructions in the accompanying literature. 

  that may be sufficient to constitute a risk of shock.  

Please read manual. 

 

Read instructions: 

Retain these safety and operating instructions for future reference. Heed all warnings printed here and on the equipment. Follow the 
operating instructions printed in this user guide. 
 

Do not open: 

Aside from two vacuum tubes, there are no user serviceable parts inside. Refer any service work to qualified technical personnel only. 
 

Power sources: 

Only connect the unit to mains power of the type marked on the rear panel. The power source must provide a good ground connection. 
 

Power cord: 

Use the power cord with the mains plug appropriate for your local mains supply as provided with the equipment. If the provided plug 
does not fit into your outlet consult your service agent. Route the power cord so that it is not likely to be walked on, stretched or 
pinched by items placed upon or against. 
 

Grounding: 

Do not defeat the grounding and polarization means of the power cord plug. Do not remove or tamper with the ground connection on 
the power cord. 
 

Ventilation: 

Do not position the unit where the air required for ventilation is impeded. If the unit is to be operated in a rack, case or other furniture, 
ensure that it is constructed to allow adequate ventilation. 
 

Moisture: 

To reduce the risk of fire or electrical shock do not expose the unit to rain, moisture or use in damp or wet conditions. Do not place a 
container of liquid on it, which may spill into any openings. 
 

Heat: 

Do not locate the unit in a place close to excessive heat or direct sunlight, as this could be a fire hazard. Locate the unit away from any 
equipment, which produces heat such as: power supplies, power amplifiers and heaters. 
 

Environment: 

Protect from excessive dirt, dust, heat, and vibration when operating and storing. Avoid tobacco ash, drink spillage and smoke, espe-
cially that associated with smoke machines. 
 

Handling: 

To prevent damage to the controls and cosmetics avoid rough handling and excessive vibration. Protect the controls from damage dur-
ing transit. Use adequate padding if you need to ship the unit. To avoid injury to yourself or damage to the equipment take care when 
lifting, moving or carrying the unit. 
 

Servicing: 

Switch off the equipment and unplug the power cord immediately if it is exposed to moisture, spilled liquid, objects fallen into open-
ing, or the power cord or plug becomes damaged during a lightning storm or if smoke odor or noise is noted. Refer servicing to quali-
fied technical personnel only. 
 

Installation: 

Install the unit in accordance with the instructions printed in the user guide. 

 II 
 
 
 
 
 

Содержание USB Dual Tube Pre Project Series

Страница 1: ...USB Dual Tube Pre User s Manual...

Страница 2: ...tion Do not position the unit where the air required for ventilation is impeded If the unit is to be operated in a rack case or other furniture ensure that it is constructed to allow adequate ventilat...

Страница 3: ...4 OPTO link switch 4 MONITOR switch 4 Rear Panel connections and controls 5 INPUT Jacks 5 INSERTS jacks 5 INSERT switch 5 MONITOR OUTPUT jacks 5 S PDIF Output 6 USB jack 6 9 Volts AC POWER jack 6 POW...

Страница 4: ...preamp circuitry to maintain a clean signal path We use a high quality 12AX7A tube inside to add warmth to musical dynamics and the analog section power supply is external to keep AC line noise and h...

Страница 5: ...rols Balanced XLR for lo Z applications and 1 4 hi Z inputs for instrument DI applications Separate Gain Phase Invert Low Cut Filter and Compressor switches on each input Selectable Dual or Stereo ope...

Страница 6: ...p recorder or computer and in a live situation you get more gain before clipping your amp PHASE switch Use the PHASE switch to select the correct phase of the input signal to compensate for mic orient...

Страница 7: ...e Headphone or Monitor Output jacks MONITOR HEADPHONES jack The Headphones jack on the front panel is an unbalanced version of the Monitor Output jacks on the rear suitable for driving head phones ove...

Страница 8: ...ut The INSERTS can also be used as preamp direct output jacks Simply plug in a 1 4 unbalanced cable for this output Make sure that INSERT switch is in the Bypass position out to guarantee that the pre...

Страница 9: ...r should only be connected to the power supply that comes with the unit 9 to 10 Volts AC 1000 mA is required typically Make sure that you specify AC and not DC if you have to replace this supply Inter...

Страница 10: ...Block Diagram 7...

Страница 11: ...ng you connect any microphone to the existing mixer or computer Operation is identical to what is covered above Instrument DI The USB Dual Tube Pre will work well as a very functional Tube DI for bass...

Страница 12: ...application as well Check your application instructions These settings should be made while the two units are connected and powered on Select one of the following sound recording input settings WINDO...

Страница 13: ...will work with the USB Dual Tube Pre are www asio4all com and www usb audio com S PDIF OPERATION The S PDIF output allows connection to various workstations and audio interfaces This output consists...

Страница 14: ...ing from loss of use Some states do not allow limitations of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific rights and y...

Страница 15: ...utput Level unbalanced 5dBu balanced 11dBu 7 5dBu insert output Phantom Power Switch selectable 48Volts DC filtered current limited Tube Type Hand Selected 12AX7A Compressor Slope progressively increa...

Страница 16: ...www artproaudio com E mail support artproaudio com USB Dual Tube Pre 182 5004 101...

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