Nady Systems SPA 1400 owner manual Front and Rear Controls

Page 4

FRONT AND REAR CONTROLS

 

 

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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 INDICATOR

This LED illuminates when the power is turned “ON”.

3.CLIP (PEAK) LED INDICATORS

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 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.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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REAR PANEL

6.CIRCUIT BREAKER

A bimetallic circuit breaker is provided for protection of the amplifier. Press to reset if it trips. If it continuously trips upon resetting, refer servicing to qualified personnel.

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.GROUND LIFT SWITCH:

Switch to right to disconnect the chassis from ground if necessary to eliminate hum caused by ground loops.

9.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.

10.L/R CHANNEL OUTPUT CONNECTORS (Speakon™ & Binding Posts)

The Speakon™ and binding post (banana jack) outputs are compatible with a speaker load of 2 Ω or greater (4Ω or greater for bridged operation). Connections are as depicted on the rear panel and in the following CONNECTIONS section on page 8 of this manual.

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Contents Amplifiers Features ContentsImportant Safety Instructions Front and Rear Controls Balanced Input Connectors Clip Limiter SwitchMode Selector Switch LF Filter 30HZ SwitchInstallation Stereo Two-Channel Mode Input Wiring TipsConnections Parallel Mono Mode Bridged Mono ModeBlock Diagram Specifications Power SpecificationsService for Your Nady Audio Product