Troubleshooting Guide; No Sound (From One Or More Speakers Connected To The Amplifier); The Amplifier Shuts Down Often Or The Line Circuit Breaker Trips Often - Emotiva Ultra UPA-1 Operation Manual

Troubleshooting Guide
Ultra Series amplifiers are expertly designed and built to provide years of trouble‐free performance. Most problems that
occur can usually be solved by checking your setup or making sure that the audio and video components connected to the
amplifier are on and fully operational.
NOTE: Before turning on your amplifier for the first time, be sure to check:
1. The Balanced/Unbalanced selectors for each amplifier channel (located on the back panel). If the selection does not match
the connection, the channel will not work. Make sure that you are selecting the proper type of connection for the cables you
are using.
2. The status and meter LED selectors on the back panel. If these are in the 'off' position, the status and meter LEDs will not
light.
The following information will help you deal with other common setup problems you may experience during normal use of
your unit. If problems persist, contact Emotiva support for help.
No Sound (from one or more speakers connected to the amplifier)
• Speaker cables may have come undone. Turn off your system and check the cables, tighten the amplifier and
speaker binding posts.
• Damaged audio cable.
• The preamplifier volume level is low for the channels concerned. Recheck the preamplifier calibration procedure.
A preamplifier Mute switch may be on, an external processor loop or a tape monitor loop is engaged.
•
Check that your preamplifier or source is running the correct surround mode. Maybe it is set for 2‐channel stereo
•
when you were expecting 5.1 surround sound.
Check if any missing channels have been turned off in a preamplifier setup menu. For example, the center amplifier
•
channel will not receive a signal if the preamplifier has been set to "Phantom".
• Check main power switch to make sure that it is in on position (1).
• An internal fuse on the unit may have blown. Contact Emotiva Support for assistance.
The amplifier shuts down often or the line circuit breaker trips often
Check that the positive and negative speaker wires are not shorted together.
•
Make sure that no speakers are shorted internally. If you have an ohm‐meter, disconnect the speaker wires and
•
measure the resistance between the speaker's positive and negative terminals.
Measure all speakers and check their impedance specifications. If necessary, review the "Series and Parallel
•
Connections" section in this manual.
If you have connected speakers in parallel, the overall impedance may be too low. It is recommended that you
•
rearrange the speakers in series to increase the overall impedance, thus taking some load off the amplifier.
• Make sure the amplifier has good ventilation and is not overheating. Allow good airflow underneath wherever
possible. If the amplifier is in a closed rack, open up the rear panel or use a quiet fan for improved ventilation.
27