Emotiva RPA-1 manual Turn-on and turn-off thumps, Hum Noises in the Speakers

Page 23

Turn-on and turn-off thumps

•Plug the amplifier into an un-switched AC outlet, and use the 2 wire Trigger Input connection with a trigger between 5-12VDC from the source unit or preamplifier (such as the Emotiva RSP-1 Preamplifier). This should allow the amplifier to turn on and off silently.

•If your powered subwoofer is the cause of the “thump” sound (not the other speakers connected to RPA-1), plug it into a different 110VAC outlet than the RPA-1 amplifier so there is no power surge conflict.

•Install a line conditioning device. Contact Emotiva or a professional installation specialist for details.

“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 RPA-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 RPA-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 equipment 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 connections 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.

NOTE: 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 identify 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 are available for audio lines and video devices. If you need assistance, contact 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.

Page 23

Page 22 Page 24
Image 23
Page 22 Page 24
Contents USER’S Guide Table of Contents RPA-1 Technical Specifications Trademark Disclosure Safety Precautions Page Antenna Grounding Outside the House NEC National Electrical Code StandardsThank You for your RPA-1 Purchase Recording the Serial Number Unpacking the RPA-1Inventory RPA-1 Front Panel Layout Emotiva RPA-1 Reference Power AmplifierRCA Audio Inputs RPA-1 Rear Panel LayoutPhysical Placement Installation and ConnectionsAC Power Considerations Connection Tips for Superior Sound Input Connection ConsiderationsOutput Connection Considerations Connection of a Preamp Level Device using RCA Inputs Connection DiagramsConnecting a Preamp Connection of a Preamp Level Device using XLR InputsConnection of a Stereo Speakers Connecting SpeakersBiamped Connections Low Pass and High Pass 12V Trigger Connections Parallel Series and Parallel Speaker ConnectionsSeries Technical Note about Multiple Speaker Connections Tips Before Beginning Speaker Placement TipsSubwoofer Location for 2.1 Systems Front SpeakersBass music No Sound from one or more speakers connected to the RPA-1 Troubleshooting GuideHum Noises in the Speakers Turn-on and turn-off thumpsRED light on the front panel is illuminated solid red Problems with the whole Audio SystemOther Probable Causes of Noise RED light on the front panel blinks from blue to redRaw Weight Shipping Weight Dimensions RPA-1 Technical SpecificationsEmotiva Disclosure Trademark DisclosureEmotiva Limited WarrantyService Assistance for the RPA-1 Franklin, TN

RPA-1 specifications

The Emotiva RPA-1 is a high-performance power amplifier designed for audio enthusiasts who demand exceptional sound quality and reliability. This amplifier is a part of Emotiva’s RPA series, known for their outstanding engineering and sonic performance. The RPA-1 delivers impressive power output, with the ability to drive demanding speakers effortlessly, making it ideal for both music and home theater applications.

One of the main features of the RPA-1 is its robust power output. It provides 200 watts per channel into 8 ohms and an even more powerful 400 watts per channel into 4 ohms, ensuring that it can handle dynamic music passages and movie soundtracks with ease. This amplifier employs Class AB amplification technology, which combines the benefits of both Class A and Class B amplifiers, resulting in low distortion, high efficiency, and a very clean sound.

The RPA-1 is equipped with a high-quality, custom-designed power supply, which features a large toroidal transformer and multiple large filter capacitors. This design ensures that there is ample power for transient peaks in the audio signal, leading to improved dynamics and headroom. The amplifier also includes a sophisticated protection circuit to prevent damage from short circuits or overheating, ensuring longevity and reliability.

Another characteristic of the Emotiva RPA-1 is its exceptional build quality. The chassis is constructed from heavy-duty steel, providing a solid and stable foundation that minimizes resonances. The sleek, modern design features a brushed aluminum front panel with easy-to-read indicators, creating an aesthetically pleasing addition to any audio setup.

In terms of connectivity, the RPA-1 features multiple RCA inputs for connecting to various audio sources, as well as binding post outputs for speaker connections. This versatility allows users to integrate the amplifier into a wide range of systems, from stereo setups to multi-channel home theaters.

Overall, the Emotiva RPA-1 is a powerful, reliable, and versatile amplifier that delivers exceptional audio performance. Its combination of high power output, robust build quality, and advanced technologies makes it an excellent choice for audiophiles and home theater enthusiasts alike. Whether you are listening to music or watching movies, the RPA-1 is sure to provide an immersive and satisfying audio experience.
Top Page Image Contents