PS Audio P-200, C-100 manual Troubleshooting, No sound comes out of the Trio

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Troubleshooting

Owner’s Reference P-200 Preamplifier C-100 Control Amplifier

No sound comes out of the Trio

If no sound comes out of the Trio there are several areas to check. Either you are not getting an audio signal into the Trio, in the case of the P-200 you may not be properly connected to a power amplifi er and, in the case of the C-100, you may not be properly connected to the loudspeakers so the audio can get out of the amplifi er, or there is no power from the AC socket.

Check the inputs on the P-200

For the C-100

Try another source

If there is a lot of hiss in your speaker

If you have hum or buzz

Check to make sure the Trio’s rear mounted AC switch is in the on position. For the P-200, fi rst check to see if the connected power amplifi er is operational. You can do this by removing the amplifi er’s interconnect if it is an RCA type and while the amplifi er is on, touch your fi nger to the RCA interconnect’s center pin and see if you hear a buzz through the speakers. If not, you have a problem with your amplifi er. An alternate method would be to or plug the audio output of your CD player or DVD player directly into the power amplifi er’s inputs. Be careful to choose a CD or DVD with relatively soft music because this will play very loudly if it is working. If you determine the power amplifi er is working, shut off the power amplifi er, reconnect the inputs of the amp to the P-200’s outputs and check the Trio’s inputs. Make sure the Trio’s gain control is up, you have selected the correct input, etc.

For the C-100, you should fi rst determine if the Control power amplifi er is working. To do this, one method is to turn the C-100 on, turn the gain control up about half way, then place your ear near the tweeter of your loudspeaker and listen for a very slight hiss. If you hear one, chances are good the amp is working fi ne, connected properly at the speakers and you have an input problem. If you suspect an input problem, replace the interconnects between the source and your C-100. At last resort, if you suspect an input problem, try another source.

If there is no sound and you are convinced the Trio has power and its front panel light is lit, contact your dealer, distributor or PS Audio for further assistance.

If there is an excessive amount of hiss or noise from the loudspeaker with either Trio, it is probably not from the Trio as these products have extremely low self noise. To test, turn the amp your P-200 is feeding off, or in the case of the C-100 Control Amp, turn it off. Remove the interconnect cables between the source and the Trio and then turn the amplifi er back on. Listen once again to see if the noise has been diminished. If it has, chances are good you either need to replace your source or power amplifi er with a quieter one or you may need to experiment with better shielded interconnect cables.

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 preamp or Control 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.

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