PS Audio GCC-250 manual Troubleshooting

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Troubleshooting

Owner’s Reference GCC Power Amplifier Series

If you have hum or buzz

Finding a ground loop

Process of elimination

Try a cheater plug

It could be the cable TV

Blue light is too bright

If you experience a hum through the speakers this can be caused by several things. The fi rst is the source. If there is an excessive amount of buzz or noise from the loudspeaker, it may be caused by a ground loop, a light dimmer in the home, poor AC power, or any number of causes. The quickest way to determine where to start your search is to simply turn the amp off, disconnect the cables feeding its input, and see if the hum goes away when you turn it back on. If it does, it’s most likely a ground loop or buzz from a dimmer.

The easiest way to fi gure out where ground loop problems lie is by the process of elimination. You need to determine where the hum or buzz is coming from within your system.

If the hum/buzz goes away when you remove the inputs to the GCC Control Amp, your next step will be to reconnect the sources, one at a time, listening for the return of the hum. After each connection, check for hum until you discover the

humming culprit.

VCR’s, surround processors, and any device that is connected to a television cable or satellite dish can cause a loud buzz and should always be suspect. If, by the process of elimination described above, you determine it is a component like a VCR that is causing the hum/buzz to occur, and using a cheater plug or removing the ground pin on a PS xStream Power Cable doesn’t help matters, it may be necessary to isolate the cable connection (CATV) with an isolation transformer. This inexpensive device is available at most Wal Mart, Radio Shack or

department store type outlets and is sometimes called a ‘matching transformer’. If you have problems

finding one, call your local cable TV company for advice. The matching transformer will be placed between the cable TV cord and the VCR, TV or processor.

Just remember, take the system down to its simplest level of connection. Find a way to hook the system up with as many pieces of the system missing or not connected. Keep it simple and get it to the point where the hum’s gone. Then start adding back components one at a time until the hum returns.

Finding the problem is 9/10th of the work in fi nding a solution.

If the blue light is too bright, or if it is not lit but the amplifi er plays, check the rear panel of the GCC Series Power Amplifi er for the three position dimmer switch. The switch is located on the rear panel, upper left hand side as you face the rear of the unit.

4826 Sterling Drive, Boulder, CO 80301

Troubleshooting 10

PH: 720.406.8946 service@psaudio.com www.psaudio.com

 

©2004 PS Audio International Inc. All rights reserved.

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Contents Introduction Owner’s ReferenceDocument Important Safety Instructions IntroductionTable Of Contents Thank you Three models What you can expectLocation Isolation Power Cables ConditionersGetting Started Getting StartedQuick Start Guide Quick Start GuideQuick Start Guide Setup instructions Setup InstructionsInput Name Editing Software version Questions and Answers Placement?Front panel power button Isolation?What voltages can the amp run on? Higher wattage model should be consideredTroubleshooting TroubleshootingTroubleshooting Problems with subwoofers Specifi cations SpecificationsConditions Remedy Miscellaneous WarrantyWarranty Outside the US Service ServiceService

GCC-250 specifications

The PS Audio GCC-250 is a remarkable integrated amplifier that has captured the attention of audiophiles and music enthusiasts alike. With its unique blend of sophisticated technology and user-friendly design, it stands out in the crowded marketplace of audio equipment. The GCC-250 is a powerful, high-fidelity amplifier that brings music to life with clarity and precision.

One of the key features of the GCC-250 is its innovative Gain Cell technology. This proprietary technology allows for better control over volume and dynamic range, resulting in a more faithful reproduction of music. The Gain Cell replaces the traditional potentiometer with a fully balanced signal path, which helps to reduce distortion and maintain the integrity of the audio signal across all volume levels.

In terms of power, the GCC-250 delivers an impressive 250 watts per channel into 4 ohms, making it well-suited for driving a variety of speaker types and sizes. This ample power allows for an immersive listening experience, whether you're enjoying soft acoustic melodies or booming orchestral pieces. The amplifier is also equipped with a range of inputs, including balanced XLR and unbalanced RCA connections, ensuring versatility and compatibility with many source components.

Another noteworthy aspect of the GCC-250 is its elegant, minimalist design that complements any audio setup. The front panel features a sleek display, allowing users to easily adjust settings and monitor performance. The remote control adds convenience, giving users the ability to manipulate volume and input selections from the comfort of their seat.

The GCC-250 incorporates advanced thermal management technology to keep the amplifier cool even during extended listening sessions. This feature improves reliability and longevity, ensuring that the amplifier remains a staple of your audio system for years to come.

In conclusion, the PS Audio GCC-250 is a powerful integrated amplifier that combines cutting-edge technology with user-friendly features. With its Gain Cell design, impressive power output, versatile input options, and sleek aesthetics, it provides audiophiles with an exceptional sonic experience that is both enjoyable and immersive. Whether you're a casual listener or a dedicated enthusiast, the GCC-250 is sure to elevate your audio experience.
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