T 973manual C.qxd 8/21/2006 11:39 AM Page 6
| 9. GROUND CONNECTOR |
| The T 973 is provided with a GROUND terminal on the rear panel. |
| This terminal is connected directly to the chassis of the T 973. In |
| the event of radio hum or radio interference, this terminal can be |
| connected to a ‘true earth’ such as a copper plated rod driven |
| several feet into the ground. |
| FRONT PANEL CONTROLS |
| 1. POWER |
| Press this button to switch the amplifier on or off. The Power LED |
| located just above the power button and Protection LED will light up. |
| After a few seconds, the Protection LED (2) will turn green, indicating |
| that the amplifier is ready for use. |
| The T 973 can also be remotely switched from On to |
| |
| |
| means of the Power switch, and the switch must be left in this |
| position. Using the |
| trigger output to on and off. The T 973’s trigger input will now |
| follow the source component’s |
| Auto Trigger switch on the back panel is in the ON position and that |
| the |
| 2. PROTECTION LED |
| The Protection LED will light up every time the amplifier is switched |
| on. After a few seconds it will turn green and the amplifier is ready |
| for operation. |
| These LEDs will also come on when one or more of the internal |
| seven amplifiers go into protect mode, but the other amplifiers will |
| continue to function so it is likely you will still hear sound. |
| When the amplifier is switched off completely from normal operation |
| by means of the power switch, the Protection LEDs will light up and |
GB | will fade out in a couple of seconds. |
NOTE: If you see the Protection LED light up during use, turn off the | |
| amplifier immediately. Check if all speaker wires are connected |
| correctly and that none of the wires are damaged, causing a short |
| circuit. Another cause may be excessive heat |
| amplifier. Make sure there is adequate ventilation around the |
| amplifier and that none of its ventilation slots, top or bottom, are |
| blocked. After the amplifier has cooled down, it will function |
| normally again. |
| In case the Protection LED remains on despite the checks mentioned |
| above, turn the amplifier off and consult your NAD dealer. |
| 3. SOFT CLIPPING LIGHTS |
| When the Soft Clipping circuit of the T 973 is activated the indicator |
| LED’s on the front panel will light. |
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