User manual NADY GTA-1260

[. . . ] If you experience any hearing loss or ringing in the ears, you should consult an audiologist. The product should be positioned so that proper ventilation is maintained. The product should be located away from heat sources such as radiators, heat vents, or other devices (including amplifiers) that produce heat. The product should be connected to a power supply only of the type described in the operating instructions or as marked on the product. [. . . ] The end user may make a single copy of the software solely for backup purposes; otherwise, no copies may be made of the software or any part thereof. No other license of any kind is granted to any part of the product or any of the intellectual property therein. 4 FRONT CONTROLS AND CONNECTIONS (4) (5) (6) (7) (8) (9) (10) (11) (12) (3) (2) (1) 1. POWER SWITCH This switch turns the main power on and off. Flipping the toggle switch up to the ON+ position will turn on the amp "in phase" with the main AC line voltage. Flipping the switch down to the ON- position will reverse the polarity. In some cases, AC hum (caused by ground loops) can be reduced by reversing the polarity. Select the On position which has the least amount of AC hum. POWER INDICATOR LIGHT Lights when the unit is powered on. STANDBY SWITCH Flipping this toggle switch to ON/OFF (STBY) will respectively enable/disable the audio to the amplifier and the outputs. This allows for proper warm-up of the tubes before applying signal to them, and allows the amp to stay warm when not in immediate use. To extend the life of the tubes, always turn the Main Power Switch on first, for 1-2 minutes, before flipping ON the Standby Switch. INPUT JACK Input for instrument outputs -- guitar, keyboard, highoutput mics for harmonicas, and other effects devices. DISTORTION SELECTOR This three-way switch selects the input sensitivity and amount of overdrive distortion. Position 1 offers the cleanest signal with least amount of distortion. Position 3 has the maximum amount of distortion. Note: The VOLUME and MASTER controls also affect the final signal level and the amount of distortion. · For cleanest operation (least distortion) adjust the VOLUME to a very low setting, the MASTER to maximum, and the DISTORTION to Position 1. · For medium distortion ( or crunch) adjust the VOLUME to past the mid position, the MASTER to mid, and the DISTORTION to Position 2. · For maximum distortion adjust the VOLUME to maximum, the MASTER to a very low setting, and the DISTORTION to Position 3. VOLUME CONTROL This adjusts the level of the input signal to the amp. Increasing this level will create distortion dependent on the DISTORTION setting. MASTER VOLUME CONTROL Adjusts overall loudness of the amp. TREBLE CONTROL Adjusts the level of treble/Hi frequencies. [. . . ] EXTERNAL SPEAKER Jack for connecting external speakers. For optimum output power, these should be 8 minimum. LINE OUT This line level output signal is derived from the output of the power amp to incorporate all the characteristics, color and tonal response of the output tubes. This signal can be input into any device, such as an audio mixer or another amplifier, and can be useful in many lives sound or recording applications. 6 S P E C I F I C AT I O N S Power Amp Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tubes: 2 ea 6L6GC Power Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Watts @ 8 5% THD; 40 Watts @ 4 5% THD Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nady PowerDriveTM PD-12i by Celestion, 12" 8 Preamp Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tubes: 3 ea 12AX7A Input Imp. [. . . ]