User manual NADY XA-2100

[. . . ] 5 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Serial # ___________________ SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] (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". 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 6 reduce the output level of the preceding component to avoid audible distortion. 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 connection to verify that it is correct, then turn ON the power again. 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). 13 9 12 14 8 7 11 BACK PANEL 10 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. GROUND LIFT SWITCH Switch to right to disconnect the chassis from ground if necessary to eliminate hum caused by ground loops. 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. FRONT & REAR CONNECTIONS 11. L/R CHANNEL OUTPUT CONNECTORS Connections are as depicted on the rear panel and in the following CONNECTIONS section on page 7 of this manual. BALANCED INPUT CONNECTORS (1/4" TRS & XLR) These 1/4" (6. 3mm) TRS (Tip/Ring/Sleeve) phone jacks and XLR jacks are compatible with balanced inputs and are wired as Tip/ Pin 3 = (+), Ring/Pin 2 = (-), and Sleeve/Pin 1 = Ground. Normal maximum input level at clipping is 1. 15V RMS (+ 4dB). Since the TRS phone jacks and XLR jacks are wired internally in parallel, you can parallel this unit with another amplifier by using either the LINE 1/4" jack or the XLR jack (depending on which you're using to input your signal) to output the signal to the input jack of the other amplifier. The 1/4" TRS phone jacks can also be used for unbalanced inputs. [. . . ] Such claims must be made by the consignee in a timely manner. ) RACK MOUNTING The XA Series amplifiers are designed for standard 19" rack mounting as well as "stack" mounting without a cabinet. Use 4 screws and washers for mounting to the front rack rails. It is also a good idea to support the amps also in the rear, especially for mobile use where the amps will be subjected to shocks. AMPLIFIER COOLING Also pay close attention to the cooling requirements. Never block the air vents in the back side and front of the amplifier if the load seen by amplifier is less than 4 ohms and the amplifier is being run at high output levels. [. . . ]