Nady Systems SPA 850 owner manual Front & Rear Connections, Front Panel, Back Panel

Models: SPA 850

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FRONT & REAR CONNECTIONS

FRONT & REAR CONNECTIONS

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FRONT PANEL

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1.

POWER SWITCH

 

To turn the unit ON or OFF, press the upper or lower portion of

 

this button. Before turning on the amplifier, check all connections

 

and turn down the level controls. A momentary muting is normal

 

when turning the amplifier on or off.

 

(Caution: Always turn on your power amplifier last, after all your

 

other connected equipment, and always turn off your power

 

amplifier before your other connected equipment.)

 

2.

POWER LED INDICATORS

 

These LEDs illuminate when the power is turned “ON”.

 

3.

CLIP (PEAK) LED INDICATORS

 

reduce the output level of the preceding component to avoid audible distortion.

4. SIGNAL LED INDICATORS

These LEDs illuminate to confirm the presence of an input signal greater than 100 mV at that channel of the amplifier

5. PROTECT LED INDICATORS

These LEDs illuminate if the power amplifier’s output connection is shorted or the load impedance is too low. When either of these LEDs is lit up, turn OFF the power and check the output’s connec- tion to verify that it is correct, then turn ON the power again.

These LEDs illuminate if any section of the power amplifier’s output are within 3DB of clipping. Occasional blinking of the LEDs are acceptable, but if they remain on more than intermittently you should turn down either the power amplifier’s level controls or

6. LEVEL CONTROLS

These control the level of signal coming into each channel. The actual voltage gain of the amplifier is shown in dB. Turn these controls counterclockwise if the peak LEDs illuminate steadily (indicating too strong an input signal).

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BACK PANEL

7.POWER CONNECTOR

The cord connector is used to connect the AC power source to your power amplifier.

(CAUTION: DO NOT REMOVE THE CENTER GROUNDING PIN.)

8.FUSES

Fuse holders for 20A/250V 3AG fuses. If these fuses continuously blow, shut off the unit and have it serviced by qualified service personnel.

9.GROUND LIFT SWITCH

Switch to right to disconnect the chassis from ground if neces- sary to eliminate hum caused by ground loops.

10. AC VOLTAGE SELECTOR SWITCH

Before plugging in the power cord, check to see that the unit is set for the proper voltage for your area: ~115V (60Hz) or ~230V (50Hz). A cover plate is provided to ensure that this switch is not accidently reset or tampered with between uses.

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Nady Systems SPA 850 owner manual Front & Rear Connections, Front Panel, Back Panel