Edirol UR-80, Owner'S Manual, Page: 375 / 396

375
Troubleshooting
Noise is heard during audio playback
• Is a mic or guitar still connected?
If a mic or guitar is connected to the UR-80, disconnect the mic or guitar, and turn the input sensitivity
knob all the way to the left. Disconnect any audio devices you are not using.
• Noise is sometimes heard in the line input or mic input.
If a USB-compatible MIDI sound module and the UR-80 are connected via USB to the same computer,
and the outputs of the MIDI sound module are connected to the line input jacks of the UR-80, noise
from your computer may be heard via the MIDI sound module from the UR-80, depending on the
computer you are using. If this occurs, you can either connect the MIDI sound module and the UR-80
in parallel using a self-powered hub, or connect the MIDI sound module via its serial or MIDI interface.
• Are two or more audio devices such as the UR-80 or a mixer connected to your computer?
Try connecting only a single UR-80 unit, and check whether the noise disappears. If numerous audio
devices are connected to a computer, noise may occur depending on your system. In such cases,
connect only the UR-80 to your computer.
• Does your sequencer software support ASIO 2.0? (;only Macintosh user)
If your ASIO-compatible software does not support ASIO 2.0, it will not operate correctly if you use
[UR-80 ASIO2.0 16bit] or [UR-80 ASIO2.0 24bit] as the ASIO driver.
In this case, select either [UR-80 ASIO1.0 16bit] or [UR-80 ASIO1.0 24bit] as the ASIO driver.
• Does your sequencer software support 24-bit audio? (;only Macintosh user)
If your ASIO-compatible software does not support 24-bit audio input/output, it will not operate
correctly if you select
[UR-80 ASIO1.0 24bit] or [UR-80 ASIO2.0 24bit] as the ASIO driver. In this case,
select either [UR-80 ASIO1.0 16bit] or [UR-80 ASIO2.0 16bit] as the ASIO driver.
• Is the UR-80 connected to a USB hub? (;only Macintosh user)
Try connecting the UR-80 directly to the USB connector of the Macintosh itself.
• Are you using a USB device other than the UR-80? (;only Macintosh user)
Try turning off the power of all USB audio devices other than the UR-80.
• In some cases, you may also be able to solve this problem by grounding the chassis of your
computer, or the grounding connector of the AC power supply plug of your computer. In
addition, you can check whether any devices that produce a strong magnetic field are located
nearby, such as a television or microwave oven.