User manual YAMAHA P2201

[. . . ] YAMAHA AUTHORIZED PRODUCT MANUAL P-2200/2201 SYSTEM AMPLIFIER P-2200/2201 OPERATING MANUAL ABOUT THIS MANUAL SCOPE The P-2200 is a system oriented amplifier, made to be used in conjunction with mixers, consoles, frequency dividing networks and speakers -- those made by Yamaha or by other manufacturers. Like any power amplifier, the P-2200's performance depends on system design and installation, in addition to its own capabilities. Thus, the P-2200 Operating Manual is system oriented, describing system design parameters and installation techniques, as well as the operation and performance of the P-2200. Additionally, this manual reviews a few of the basic mathematic tools used in system design, from dB to Ohm's law. [. . . ] Unwrap or unbraid shield, twist to form lead. Position outer insulation just ahead of cable clamp, strip center conductor from point just behind tip connection. Bend shield as illustrated, solder to outer surface of sleeve connection. (Cool immediately with pliers. ) Insert center conductor in tip connection, solder, cut end flush. Bend the end of the tip connector (slightly) toward the sleeve connection to help prevent the burr (from the cut wire) from cutting through the insulating collar. Using pliers, bend cable clamp around outer insulation. Clamp should be firm, but not so tight as to cut insulation. Slide insulating collar forward, until flush with rear of threads. Slide shell forward, screw tight to plug assembly. WIRING A TIP, RING & SLEEVE PHONE PLUG (3-conductor) Parts identification. Slide shell and insulating collar over cable end. Strip outer insulation for length equal to length of sleeve connection. Remove any tracer cords and strain relief cords. Hold cable with outer insulation just ahead of cable clamp, and strip the red (or white) conductor just behind the tip connection. Then strip the black conductor just behind the ring connection. Tin all leads, and cut the center conductors so approximately 1/8" of bare wire remains. Solder the shield to the outer surface of the sleeve connection, allowing enough free shield to bend around to the other side of the cable clamp. Cool the connection immediately with pliers. Insert the center conductor leads in their respective connection points, and solder in place. Bend the end of the tip connection (slightly) toward the ring connection to help prevent the burr (from the cut wire) from cutting through the insulating collar. Using pliers, bend the cable clamp around the outer insulation. The clamp should be firm, but not so tight as to cut the insulation. Slide the insulating collar forward, until flush with rear of threads. Slide the shell forward, and screw tightly onto plug. Use of the Input Polarity Switch on the P-2200 The XLR input connectors on the P-2200 are unbalanced. In one position, the switch beside the connectors attaches pin 2 to pin 1 (ground) leaving pin 3 "hot" (USA standard). In the other position, the switch attaches pin 3 to pin 1 (ground) leaving pin 2 "hot" (DIN/JIS standard). [. . . ] It merely transforms an impedance at its primary (according to Equation 3) to a corresponding impedance at its secondary. Thus, the transformer in the above example has an impedance ratio of 15, 000-to600 = 25-to-1. If a 150K-ohm circuit is connected to its primary, the impedance seen at the secondary will be 150, 000/25 = 6000 ohms. Since this impedance transformation works in both directions, if a 6000-ohm circuit is connected to the secondary of the transformer, the impedance seen at the primary will be 150, 000ohms. [. . . ]