User manual PEAVEY UMA 75

[. . . ] Cover for UMA 75/150T II 1 Intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. CAUTION: Risk of electrical shock ­ DO NOT OPEN!CAUTION: To reduce the risk of electric shock, do not remove cover. [. . . ] Also provided are 8 ohm, 25 volt, and 70 volt balanced outputs. To use these outputs, the jumper between 4 ohm and XFMR must be installed. For 8 ohm speaker systems, connect between the COM terminal and the 8 ohm terminal. For "distributed" speaker systems, 25 volt and 70 volt outputs are provided. One more output is provided on the UMA Series amplifiers. This is a balanced, transformer-isolated line level output. This output is provided for direct connection to booster power amplifiers, etc. This output is designed to deliver 1 V RMS into a 600 ohm load. See Figures 4 through 7 for possible output connections. NOTE: Due to the high gain and frequency response of the UMA Series amplifiers, it is necessary that the input cables be routed away from the output cables to prevent instability. AC OUTLET (UNSWITCHED) (30) Provides AC power for auxiliary equipment with power consumption -- 300 watts maximum. FUSE (31) The fuse is located within the cap of the fuseholder. If the fuse should fail, IT MUST BE REPLACED WITH THE SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO THE EQUIPMENT AND TO PREVENT VOIDING THE WARRANTY. If the amp repeatedly blows fuses, it should be taken to a qualified service center for repair. WARNING: THE FUSE SHOULD ONLY BE REPLACED WHEN THE POWER CORD HAS BEEN DISCONNECTED FROM ITS POWER SOURCE. LINE CORD (120 V PRODUCTS ONLY) (32) For your safety, we have incorporated a three-wire line (mains) cable with proper grounding facilities. It is not advisable to remove the ground pin under any circumstances. If it is necessary to use the equipment without proper grounding facilities, suitable grounding adaptors should be used. Less noise and greatly reduced shock hazard exist when the unit is operated with the proper grounded receptacles. 6 INSTALLING THE RACK-MOUNT EARS This unit can be rack-mounted with an optional rack-mount kit. To attach the rack-mount ears, simply remove the three screws already in the front on either side of the unit and align the ears with the rack-mount flange forward of the unit. Replace the screws and tighten securely, being careful not to overtighten. The unit then mounts in a standard two-space 19" rack. You may find it desirable to remove the rubber feet from the bottom of the unit in rack-mount installations. Channels 1 and 2 shall have screw terminals and XLR connectors for the Low-Z inputs; screw terminals for the High-Z inputs. Channels 3 and 4 shall have screw terminals for the Low-Z inputs; screw terminals and RCA phono connectors for the High-Z inputs. [. . . ] For more information on grounding, write for our free booklet "Shock Hazard and Grounding. " Power supply cords should always be handled carefully. Never walk or place equipment on power supply cords. Periodically check cords for cuts or signs of stress, especially at the plug and the point where the cord exits the unit. The power supply cord should be unplugged when the unit is to be unused for long periods of time. [. . . ]