Emotiva manual Troubleshooting Guide, No Sound from one or more speakers connected to the MPS-1

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Troubleshooting Guide

The Emotiva MPS-1 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 your Emotiva Dealer for help.

No Sound (from one or more speakers connected to the MPS-1)

•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 en- gaged.

•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.”

•The Auto/on/off switch on the MPS-1 might be in the off position.

•A fuse on the unit may have blown or the individual fuse within the power module may have blown.

The amplifier shuts down often or the line fuse(s) blows 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. If the read- ing is less than 2 ohms, the speakers may have an internal short. Measure all speakers and check their impedance specifications.

•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 under- neath 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 the MPS-1

•Make sure that your preamp 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

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Contents USER’S Guide Page Table of Contents Service Assistance for the MPS-1 Emotiva Disclosure Connection Tips for Superior Sound Connection DiagramsPage Safety Precautions Page NEC National Electrical Code Standards Dear Home Entertainment Enthusiast Thank You for your MPS-1 PurchaseSerial Number Place of Purchase Date of Purchase Unpacking the MPS-1Recording the Serial Number MPS-1Modular Professional Power Amplifier Features Emotiva MPS-1 Modular Power AmplifierPower Button Amplifier Channel Display MPS-1 Front Panel FeaturesPanel Dim Selector Button Unbalanced RCA Inputs Speaker Output Terminals MPS-1 Finished Rear Panel LayoutBalanced XLR Inputs Connection External TriggerInstallation of the EPM-300 Power Modules Installation and ConnectionsTools Required Module bay For proper installation of the power module, Piano Black Wood Side Panels MPS-1 Installation AccessoriesInput Connection Considerations AC Power ConsiderationsOutput Connection Considerations Connection Tips for Superior Sound Automatic Operation of the Cooling FansUnbalanced Connections Connection DiagramsBalanced Connections Received Series Series and Parallel Speaker ConnectionsAn example of a Parallel Connection between two speakers Tips Before You Begin Speaker Placement TipsFront Speakers Place each surround speaker to be an equal Surround Back Speakers Play a test Tone or low bass music No Sound from one or more speakers connected to the MPS-1 Troubleshooting GuideTurn-on and turn-off thumps Other Probable Causes of Noise Technical Specifications Service Assistance for the MPS-1 Limited WarrantyEmotiva Emotiva Disclosure Franklin, TN

MPS-1 specifications

The Emotiva MPS-1 is a powerful and versatile multi-channel amplifier designed to enhance audio performance in both home theaters and high-fidelity music systems. Known for its robust construction and high-quality sound output, the MPS-1 stands out as an ideal choice for audiophiles and home theater enthusiasts alike.

One of the defining features of the MPS-1 is its impressive power output. The amplifier delivers 200 watts per channel into 8 ohms and 300 watts into 4 ohms, providing ample headroom to drive even the most demanding speakers. This high power output ensures that users can enjoy dynamic sound without compromising on clarity or detail, making it suitable for both movies and music.

The MPS-1 utilizes advanced Class AB amplification technology, combining the efficiency of Class A with the thermal performance of Class B. This design minimizes distortion and maximizes linearity, ensuring that the sound remains clean and accurate across a wide frequency range. The amplifier also features a high-current output stage, allowing it to handle sudden peaks in audio without clipping, an essential quality for impactful sound reproduction.

Another significant aspect of the MPS-1 is its comprehensive connectivity options. It is equipped with both balanced XLR and unbalanced RCA inputs, providing flexibility for integration into various audio setups. The amplifier can also be configured to operate in a bridged mode, effectively doubling the output power to drive larger speaker setups or subwoofers, which enhances its versatility in custom installations.

In terms of build quality, the MPS-1 showcases Emotiva's commitment to durability. The amplifier features a heavy-duty steel chassis designed to minimize interference from external sources, while the high-quality components used in its construction—such as powerful power supplies and premium capacitors—ensure longevity and reliability.

The MPS-1 also incorporates intelligent thermal management features, including heat sinks and a built-in fan that operates only when necessary, keeping the unit cool during extended use without introducing unwanted noise.

Overall, the Emotiva MPS-1 represents a compelling choice for those seeking a high-performance multi-channel amplifier that combines power, flexibility, and exceptional audio fidelity, making it a worthy addition to any serious sound system.
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