Lexicon NT Series Amplifiers
Wire multiple amplifier triggers in parallel. Common “zip cord” wire is adequate. (If you find that using audiophile cable for the trigger signal sounds better, feel free to use it, just don’t tell anyone else.)
The pin outs on the
All of the Lexicon amplifiers, with the exception of the 501, which is single- Bridged Operation channel, can be bridged, doubling the normal output voltage. Please refer to the
rear panel diagram for each model for specific wiring information. Note that only the red colored output connectors are used in bridged operation. To ensure consistent polarity, note the + and – markings on the bridged operation wiring diagram on the amplifier rear panel.
No sound | Check setting of the input connector type (BAL/ Troubleshooting |
| UNBAL) and operation mode (BRIDGED/INDI- |
| VIDUAL). |
| Check the speaker cable wiring on the rear panel and |
| verify correct configuration for individual or bridged |
| operation. |
| Use another amplifier channel to verify that the input |
| signal is good. Use another speaker to verify that the |
| speaker is not faulty. |
No LEDs | Check the power cord connection. |
| Disconnect power cord from amplifier, and check rear |
| panel fuses. |
| Check front panel power switch is ON. |
| Turn Remote ON/OFF switch to LOCAL. If amplifier |
| turns on, check voltage of the trigger signal at the input. |
| It must be at least 3.8 volts. |
LEDs continuously |
|
red or yellow | Check input and output cables for short circuits. If |
| LEDs remain red or yellow, disconnect the power and |
| contact Lexicon Customer Service at (617) |
| your local dealer. |
Your Lexicon amplifier requires no maintainence. It is, however, good electrical Maintenance practice to clean all connectors once a year. An occasional dusting of the exterior
surface with a soft cloth helps maintain the unit’s luster. Do not use any abrasive chemicals or cleaners as this will damage the surface.
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