Physically Re-Configure The Audio 2 Dj; Check Your Irqs (Windows Only) - Native Instruments Audio 2 DJ Operation Manual

►
You can test whether the amplifier or powered monitors create the ground loop. Monitor
your audio signal from the headphones output of the AUDIO 2 DJ via a headphone.
Therefore the amplifier or the powered monitors need to be physically disconnected from
the AUDIO 2 DJ . In case the ground loop disappears, you need to lift the ground on your
amplifier or the powered speakers. Contact the manufacturer of your amplifier/speakers
before lifting the ground to find out if ground lifting is supported on your device.
►
On laptops, low quality power supplies often lead to ground loop noise. Run your laptop
on its battery, only to see if the ground loop disappears. In case the ground loop disap-
pears, you need to lift the ground on your laptop. Contact the manufacturer of your laptop
before lifting the ground to find out if ground lifting is supported on your device.
►
On desktop computers, the computer monitor (screen) might cause the ground loop.
Turn your monitor off and disconnect its power supply while you hear the ground loop.
In case the ground loop disappears, you need to lift the ground on your monitor.
Contact the manufacturer of your monitor before lifting the ground to find out if ground
lifting is supported on your device.

9.5 Physically re-configure the AUDIO 2 DJ

Connect the AUDIO 2 DJ to another USB port on your computer. Try all USB ports on your
computer until you find the one that works best.

9.6 Check your IRQs (Windows only)

IRQ stands for Interrupt Request. This is the way in which Windows allocates resources to
the various devices and ports in your system. If your AUDIO 2 DJ is on a port that shares an
IRQ with other devices, you may have an IRQ conflict. This means your sound card is not re-
ceiving the resources it needs to function properly. Here is how you detect an IRQ conflict.
1. Open Start > Run; type the word msinfo32, then press "oK."
2. Your system information window will appear.
AUDIO 2 DJ – 41