Emotiva UPA-2 manual Troubleshooting Guide

Troubleshooting Guide

The Emotiva UPA-2 is 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.

The following information will help you deal with common setup problems you may experience during normal use of your unit. If problems persist, contact Emotiva for help.

No Sound (from one or more speakers connected to the UPA-2)

•Speaker cables may have come undone. Turn off your system and check the cables, and 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, or an external processor loop or a tape monitor loop is engaged.

•Check that your preamplifier or source is running the correct surround sound mode. Maybe it is set for 2-channel stereo when you were expecting 5.1 surround sound.

•Check in case 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.”

•If the unit is not on, the ON/OFFswitch on the UPA-2 might be in the off position.

•A internal fuse on the unit may have blown. Contact Emotiva 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 speci fications. If necessary, review the “Series and Parallel Connections” section of 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 of the load off the amplifier.

•Make sure that 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.

Poor Bass Performance from Full Range Speakers connected to UPA-2

•Make sure that your preamplifier does not have the bass (tone control) level turned down.

•Many surround preamplifiers have controls which can direct all the bass to subwoofers, or let your main speakers play the full range. Make sure that the preamplifier has been correctly set. If you are not using a subwoofer, set the speaker options to “Large” where possible.

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