User manual ART USB PHONO PLUS V2

[. . . ] Do not open: There are no user serviceable parts inside. Refer any service work to qualified technical personnel only. Power sources: Connect the units power supply to mains power only of the type described in this user manual or marked on the power supply. Power supply: Use the power supply with sealed mains plug appropriate for your local mains supply as provided with the equipment. [. . . ] Battery and USB bus powering are also possible when AC power is not available. 4 The USB connector is USB 1. 1 compliant and should be used to connect directly to one of the USB connections on your computer. This connection also powers the USB circuitry inside the USB Dual Pre and will power the whole product if no other power source is available or active. To your computer this connection looks like a "USB Audio CODEC" and your computer then controls the sample rate. Since the USB connection will be carrying high quality digital audio to and from your computer as well as bus powering the USB interface, we suggest that you use a high quality shielded USB cable for best performance. Ideally you should connect directly to one of the USB inputs on your computer. Connecting through a shared hub can reduce power and bandwidth that is available for each USB device and should be avoided when possible. Though the USB Dual Pre is compatible with USB 1. 1 and 2. 0 interfaces, USB 2. 0 is preferred for the cabling and computer connection as it allows for more system bandwidth. If you must use a hub, it should be a powered USB 2. 0 compliant hub for best results, This is especially important if you plan on using multiple units for more channels of simultaneous digital audio input. Both analog output jacks and the USB Out can be used at the same time, which is handy when you want to run to a mixer and instrument amp in a live situation, or when connecting to a computer or recording system and locally monitoring your source with headphones. For a typical recording application where you want to add tracks of audio using the USB bus to your computer, while monitoring the mix externally for low latency, we suggest the following: Connect your instrument and/or microphone to the USB Dual Pre inputs, then connect to your computer with a USB cable. Use the 1/4-inch monitor output jacks to feed your powered monitors or analog monitor system and/or use the 1/8-inch jack for local headphone monitoring. Then use the Monitor Mix control to locally adjust between the new tracks and the computer playback signal. The new track that you are recording will be in real time and have no latency in your monitoring system. 5 CONTROLS and OPERATION: The Left Gain and Right Gain Controls directly adjust the input amplifiers giving you control over the dynamic range of your source. You get from 0 to 48dB of gain depending on settings. In this setting you can either power everything from your laptop or if you have a 9 Volt battery installed and the Power switch is on, power to the preamp and phantom powering sections will come from the battery and the laptop will only be powering the USB interface. This helps to maximize your remote recording time. LED metering circuitry on each channel aids in setting gain and has a fast attack to help indicate 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 Monitor Mix and Level to the monitor system you are driving. The red "Clip" LED comes on just before clipping (2dB before digital clipping and 6 dB before analog clipping) and should light on musical peaks only. The green "Signal" LED comes on around 10dB before the "Clip" LED and indicates how far below clipping your signal is. The "Signal" LED has a longer release time and should be on much of the time during performance and if not it indicates that your signal or input gain may be too low for best results. A brief note from customer service: Once in a while a customer will call and say: I think my ART preamp is "noisy". 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. Choose the mixer device: "USB Audio CODEC" or Programs =>Accessories =>Entertainment =>Volume Control=> Options=> Properties Choose the mixer device: "USB Audio CODEC". WINDOWS VIsta: Settings => Control Panel => Sound => Playback Tab and Record Tab. Choose: "USB Audio CODEC" Mac OS9. 1+: Control Panels => Sound. [. . . ] You will also enjoy more flexibility and control over a standard DI. Operation is simple, insert the output of the instrument into the input of the USB Dual Pre. Make sure the volume on the bass or guitar is up most of the way. If you are using any effects, make sure that the overall output is not greatly increased when the effect is on. [. . . ]