Art Project Series User Manual
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Art Project Series User Manual

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  • Page 2 IMPORTANT SAFETY INSTRUCTION – READ FIRST This symbol, whenever it appears alerts you to the presence of uninsulated dangerous voltage inside the enclosure- voltage that may be sufficient to constitute a risk of shock. This symbol, whenever it appears, alerts you to important operating maintenance instructions...
  • Page 3 INTRODUCTION The USB Pre IV is a high quality 4 input / 4 output 192kHz capa- ble digital interface for connecting a computer to a stereo or PA system. It provides up to 4 mic inputs or two high Z instrument and two-line inputs or any combination of these.
  • Page 4 are the obvious choice to entertain a wide variety of applications from Podcasting/Broadcasting to tracking and monitoring. With the USB Pre IV, your laptop, and a pair of quality micro- phones you can do some serious remote recording. The USB Pre IV is equipped with MIDI in and out, allowing com- munication with other MIDI devices.
  • Page 5 Key Features Include  Four High-Quality 32-bit A to D Converters  Four High-Quality 32-bit D to A Converters  Sample rates from 44.1k to 192kHz  Low latency ASIO and WDM driver  Transformer isolated outputs  Low noise mic preamps ...

  • Page 6: Quick Startup Guide

    USB PRE IV Driver: To download the driver, you will need to log onto the artproau- dio.com website. Download the driver from the support section on the ART website (www.artproaudio.com). MAC: Please log onto the artproaudio.com website. Register your unit.
  • Page 7 CONNECTIONS Left and Right “Combo” jacks on the front allow for either XLR or ¼-inch TRS input connections. The connections are used for instrument or line level balanced or unbalanced signals. The high fixed input impedance works well with guitar and other passive instrument pickups. You can use an unbalanced or balanced plug with this connection.

  • Page 8: Controls And Operation

    +48V Switch: The +48 Volt phantom power (when ena- bled) is supplied to pins 2 and 3 and pin 1 acts as the ground return. Do not lift pin 1 when using phantom power. INPUTS: These potentiometers independently vary the in- put gain for the Left and Right Channels 1 thru 4.
  • Page 9 monitors, recording system, or a mixer’s balanced line or insert inputs. Though we do not recommend it, if you have to go directly into the balanced microphone input on a mixer make sure that phantom power is off at the mixer. The mixer’s input pad and level controls should be set for minimum gain, and the Monitor Level control on the USB PRE IV should be set at a low enough level to prevent overdriving the mixers input section.
  • Page 10 You get from 0 to 50dB (Bal Inputs) of gain depending on set- tings. Set the controls counterclockwise to minimum gain when connecting the inputs. The Output Gain control allows you to directly adjust the CH1/2 rear jacks. The Input Monitor switch when engaged, feeds the audio to the Headphone CH3/4 jack.
  • Page 11 any clipping. The metering is located in the signal chain just after the preamp circuitry to help in setting signal levels going to your computer. The monitor controls come after the metering so that you can use the meters to set the overall input gain on each channel for best recording dynamic range and then trim the Mon- itor Mix and Level to the monitor system you are driving.

  • Page 12: Midi In And Out

    MIDI IN AND OUT When setting up an external device with your USB Pre IV, you can configure MIDI Modules and controllers. These MIDI con- nections allow this unit to communicate with other MIDI con- trolled devices. Please reference the manufacturer’s manual for the complete installation instructions of the MIDI device you would like to interface with the USB Pre IV.

  • Page 13: Midi Setup

    MIDI SETUP The USB Pre II and USB Pre IV implements a USB-MIDI inter- face to connect your instruments, sequencers and other MIDI equipment to your computer. Here is how the USB Pre II’s MIDI presents itself in Win 10’s Device Manager: Fig.
  • Page 14 When your Windows application wants to use the MIDI interface, look for USB II or USB IV. This is how the USB Pre II MIDI I/O shows up on a MAC using Audio/MIDI setup MIDI Window. As you can see there is one in- put and one output that are not yet assigned.
  • Page 15 Using the MIDI I/O in Cubase. When you want to use the MIDI interface in Cubase, select the Studio Setup function and then select the MIDI Port Setup. Se- lect USB II (USB IV) as seen in Fig. 3. Fig. 3 – Cubase MIDI Port setup Using the MIDI Device Manager, you can use the MIDI output after installing a device and setting the output to USB IV.
  • Page 16 Once a MIDI output is assigned, it will show up as an output se- lection on a MIDI track and Active in the MIDI Port Setup win- dow. Fig. 4 shows an example of assigning the USB Pre II (IV) MIDI output to a GM (General MIDI) device.
  • Page 17 MIDI I/O for both machines (not requiring a Garage Band sample and saving space). Once in a while a customer will call and say: I think my ART pre- amp is "noisy". What's wrong? If you experience unwanted "noise" in your system when you use a stand-alone preamp, please consider what your signal is and where you're sending it.

  • Page 18: Usb Operation

    USB OPERATION Connect your analog jacks. If you are using one of the analog MONITOR outputs for local low latency monitoring, connect that to your monitor system or headphones. Next, set the front panel controls for proper operation as per the previous sections. Then connect the USB cable to the appropriate input on your computer and lastly to the USB connector on the USB Pre IV.
  • Page 19 Typically, on a Mac, the core audio in- terface has low latency so this is usually not an issue. ART provides a low latency driver, which you need to download from our website to use the unit with windows. This is an ASIO driver, so your application needs to use ASIO I/O to take ad- vantage of this driver and its control panel.

  • Page 20: Microphone Pre-Amplifier

    APPLICATIONS Microphone Pre-Amplifier The USB Pre IV can be used as a high-quality microphone pre- amplifier suitable for all dynamic, condenser, and ribbon micro- phones. Most conventional mixers utilize budget minded micro- phone preamps and while very functional, they do not sound all that great.

  • Page 21: Phantom Power Supply

    ready to go. Refer to the LEDs on the front for a visual measure of input gain, and then route the output to a mixer, workstation, or computer via the1/4-inch or USB output. The overall analog output level can be adjusted right at the unit. Since the USB Pre IV is run off the USB bus, it is ideal as a portable microphone preamp for remote performance or laptop recording.
  • Page 22 The USB Pre IV will work well as a very functional DI for Bass, Acoustic Guitar and virtually any other instrument with a ¼-inch or XLR output. Many people prefer the sound of ART preamps for responsiveness instead of standard DI’s and preamps. You will also enjoy more flexibility and control over a standard DI.

  • Page 23: Warranty Information

    WARRANTY INFORMATION Limited Warranty Applied Research and Technology will provide warranty and ser- vice for this unit in accordance with the following warrants: Applied Research and Technology, (A R T) warrants to the orig- inal purchaser that this product and the components thereof will be free from defects in workmanship and materials for a period of three years from the date of purchase.
  • Page 24 Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs. This warranty is void if the serial number is altered, defaced, or removed. A R T reserves the right to make changes in design or make additions to or improvements upon this product without any obli- gation to install the same on products previously manufactured.
  • Page 25 You may want to consult with your dealer for assistance in troubleshooting or testing your particular configuration. If you believe that the ART unit is at fault, go to www.artpro- audio.com. Select “Support”, then “Return Authorization Request” to re- quest a return authorization number.

  • Page 26: Specifications

    SPECIFICATIONS Input Connections: 4 - XLR/1/4-inch combo jacks, USB 1.0/2.0, MIDI DIN 5. Output Connections: Transformer isolated Balanced 1/4-inch 1/4-inch Headphone output, MIDI output Max input level: +15dBu Inst.,19dBu Bal. Line, +3.5dBu mic Input Impedance: >1M Ohms 1/4-inch input, >7k Ohms XLR input Max output level: +8dBu (CH1/2), +6.5dBu...
  • Page 27 All aluminum black anodized Note: 0 dBu = 0.775Vrm ART maintains a policy of constant product improvement. Therefore, specifications are subject to change without notice. Go to www.artproaudio.com for the latest information and support on the USB Pre IV Project Series.

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