User manual ART DIO

[. . . ] The ART DI/O TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC Power Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Audio Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] You should increase your input signal level, or the DI/O's Input Gain until this light is on solid whenever there is signal for best performance. The red (0dB) LED comes on when the signal at the A/D is 3dB away from full-scale clipping. With most audio material, you would increase the input signal or Input Gain until this light just starts to come on during signal peaks. The yellow (Warm) LED comes on whenever the tube is adding warmth or character to the signal. This is a function of both the input signal level and the Tube Warmth control. -5- TUBE WARMTH CONTROL This control allows you to vary the tube circuits warmth contribution to the audio signal chain. At the Clean end, there is essentially no tube processing and the yellow Warm LED should not light. As you turn up the control, the drive to the tube is increased while its output is adjusted, to maintain a fairly constant output signal to the A/D. At higher signal levels you will see the yellow (Warm) LED start to come on, indicating that the tube circuit is doing some of the processing. The audible effect is subtle at lower settings. At the full Warm position, you will see the Warm LED on more of the time, even at lower signal levels. Audibly, at this setting, the tube adds low-order harmonics that tend to musically "thicken" the signal. Signal peaks are also softened, rather than hard-clipped. Both of these effects are what give the DI/O that "Analog Tape Saturation" sound at higher levels with higher settings of the Warmth control. POWER LED INDICATOR The green Power LED lights solid to indicate that the DI/O is receiving adequate power from its external power source. If it ever flickers, check the connections, power adapter, or line voltage. -6- CONNECTIONS variety of equipment. All inputs and outputs are located on the rear panel. Standard ¼" audio inputs and outputs make patching simple. -7- ¼" INPUT JACKS The ¼" Input jacks are for instrument and line level signals. They have a high input impedance to minimize any loading effects on instrument pickups. They can also handle up to +20 dBu signals for line level signal sources. If nothing is plugged into the Input jacks, they automatically switch to get their signal from the ¼" Output jacks. This allows you to loop the digital signal thru the DI/O. In this configuration you only need S/PDIF in and out connections. [. . . ] 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 obligation to install the same on products previously manufactured. A R T shall not be liable for any consequential damages, including without limitation damages resulting 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. [. . . ]