“Hum” Noises in the Speakers

This problem is more than likely caused by a “ground loop” in your system, rather than a fault in the BPA-1. Follow these steps to isolate the main cause of the hum, there may even be more than one. Remember to turn off all components in your system, including the BPA-1, before disconnecting or connecting any cables.

•Remember to turn off all components in your system, including the amplifier, before disconnecting or connecting any cables during troubleshooting.

•Try to have all of your equipment on the same electrical outlet or circuit. Group all the low power components (preamp, CD player, DVD etc.) on a single outlet or power strip. This is provided that the overall current draw from your equip- ment does not exceed the rating of the outlet or breaker.

•Disconnect all cables which come from outside the room, and check if the hum goes away. This includes such connec- tions as cable TV, satellite TV, or roof top antennas. Make sure that they are disconnected where they first enter the room, so they are making no connection to the preamplifier or the TV, or any other component. If the hum is caused by the cable TV line, then you will need a “ground loop isolator.” This is an inexpensive device fitted in line with the coaxial cable feed. Contact your cable company or your Emotiva Dealer for assistance.

•Disconnect all connections from the preamplifier to your TV, VCR or DVD.

•As a test, disconnect any other component which has a grounded power cord. Never remove the ground pin from any power cords (if present). This is very dangerous.

•If the hum persists, disconnect all the source components one at a time from the back of the preamplifier, until you iden- tify the problem.

•Try moving the speaker cables away from any power cords. Try just one speaker, connecting it to each amplifier channel and see if one channel is bad.

•Check that the interconnect cables to the amplifier do not have any broken connections. The best way to do this is to substitute a known good connection for the suspect connection. If you reverse the cables and the problem goes away, the cable may be damaged or broken. This is possible even if you can’t physically see the break as the strain for pulling on audio cables can sometimes break the wire internally.

Ground loop isolators for audio lines and video devices are available from your Emotiva Dealer. Although this is not always an ideal solution, the grounding differences between certain home entertainment components sometimes require ground loop isolators. This is the exception rather than the rule.

Other Probable Causes of Noise

Speaker noise may also be caused by interference or noise on your AC line. Make sure there are no large appliances sharing the line, or halogen lamps or light-dimming Triac devices.

•Try connecting your system to another AC socket on a separate line.

•If the hum is heard from within the BPA-1 and not through the speakers, this may also be caused by interference on the AC or DC lines. The power transformers may turn this interference into an audible noise. Internal hum can be made worse by a shelf or cabinet resonating, so try moving the BPA-1 to another shelf.

•Try moving your components further away from the TV, especially if you ever notice the screen has changed color in the area closest to the component.

If you have very high efficiency speakers, these may tend to reveal noises which other speakers do not.

Problems with the whole A/V System

If you are having more complex problems in your overall home entertainment system (not just with the BPA-1 amplifier), please contact your Emotiva Dealer or AV123 (Exclusive US Distributor) for professional installation assistance. These professionals have years of experience with a wide range of home entertainment and lifestyle products and can offer you assistance in troubleshooting and rectifying problems.

AV123 (Contact Information)

Toll Free - (877) 543-7500 (menu option 2)

Website - www.av123.com (click on “support”)

e-mail - support@av123.com

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Emotiva pmn manual Hum Noises in the Speakers, Other Probable Causes of Noise, Problems with the whole A/V System
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pmn specifications

Emotiva PMN, or the Emotiva Professional Monitor Network, is a high-performance audio system designed for audiophiles, producers, and sound engineers seeking exceptional sound quality and accuracy. This innovative product line showcases Emotiva's commitment to delivering studio-grade sound reproduction in a compact, efficient package, making it ideal for both professional settings and home audio setups.

One of the standout features of the Emotiva PMN is its active design, incorporating built-in power amplifiers that minimize the need for external amplification. This results in a more streamlined audio setup, allowing users to simplify their workspace while still enjoying robust and powerful sound. Each monitor in the PMN series typically features a bi-amped configuration, dedicated amplifiers for both the woofer and tweeter, ensuring that each frequency range is optimally powered for superior performance.

The PMN series utilizes advanced driver technology, including high-quality woofers and soft-dome tweeters, which work in tandem to deliver a balanced sound signature. The drivers are designed to provide low distortion, high sensitivity, and wide frequency response, enabling users to hear every detail in their audio. Additionally, Emotiva employs precision crossovers to ensure a seamless transition between drivers, enhancing the overall listening experience.

Connectivity is another strongpoint of the Emotiva PMN. The monitors support a variety of input options, including XLR and TRS connections, making them versatile enough to integrate into different audio setups. This feature is especially beneficial for recording engineers and producers who require adaptability for various equipment and studio environments.

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Overall, the Emotiva PMN brings together cutting-edge technology, exceptional sound quality, and user-friendly features, making it an excellent choice for anyone serious about audio production or enjoying high-fidelity sound in their home. Whether in a professional studio or for listening pleasure, the PMN series stands out as a reliable and effective solution in the ever-evolving world of audio technology.
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