Troubleshooting - PRESONUS Eris Pro Sub 10 Owner's Manual

4 Resources
4.3

Troubleshooting

4.3 Troubleshooting
No power. First ensure that your Eris Pro Sub 10 is plugged in. If it's connected to a
power conditioner, verify that the power conditioner is turned on and functioning.
If problem still exists, disconnect the power cable from your studio monitor and
check the fuse on the back panel. The type of fuse needed for your monitor is
listed below the power inlet. Be sure to use the correct fuse for the set input-power
voltage. If the fuse blows again, you will need to contact PreSonus for a repair.
No audio. If your Eris Pro Sub 10 appears to power on but you hear no sound
when playing audio (the lights are on but nobody's home), first make sure
that the cables connected to the subwoofer are working correctly. Also,
verify that the Input Level control is set to provide high enough gain.
Hum. Usually, hum is caused by a ground loop. Verify that all audio equipment is
connected to the same power source. If you are not using a power conditioner,
we highly recommend that you add one. Not only will this help to minimize
hum, it will better protect your equipment from power surges, brownouts, etc.
Use balanced cables whenever possible. If your audio device does
not offer a balanced output, you can connect it to a DI (direct-injection)
box, which will provide a ground-lift switch and a balanced output.
Finally, make sure that your audio cables are not run near power cables,
and use cables that are the appropriate length for your application.
Using cables that are too long not only increases the risk of noise, it
increases the likelihood that the cables are coiled, which will essentially
create an antenna that picks up all kinds of audio interference.
Eris Pro Sub 10
®
Owner's Manual
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