User manual ZAPCO STUDIO 50

[. . . ] 100% symmetrical, discrete power amplifier circuitry. Gold plated power, RCA and speaker connectors. Gate Drive Boost circuitry maximizes power supply efficiency and improves overall performance. Separate LED's for power and protection. [. . . ] Connect the 12V "POS" terminal (FUSED +12VDC) to the battery with 10 gauge (or heavier) wire. Fuse the wire within 18" of the battery with a 25 amp fuse or circuit breaker. Although the amplifier is already fused, a short between the amplifier and the battery could cause a fire. See the section titled "Warnings". Connect the "NEG" terminal to the vehicle chassis with the shortest possible 10 gauge wire. Do not make this connection directly to the battery. Do not use seat or seat belt bolts for grounding. Do not share this connection with other equipment. A "single point" ground for high current connections will degrade the system's performance. Inadequate power supply connections will result in REDUCED POWER OUTPUT. Connect the "TURN ON" terminal to the radio's "amp turn on" or in some cases "power antenna" lead. This connection requires very little current and may be connected with a light gauge wire such as #22. Applying 12 volts to this terminal turns the amplifier on. 5 Signal Wiring Guidelines Control Endplate Input Connection: Connect the right and left input signals to the corresponding RCA input jacks on the end of the Studio 50. Keep these cables close to each other and far away from power and speaker wires. When using in bridged mono mode, feed the left and right inputs with a "y" adapter. Input Sensitivity: The input sensitivity or "gain" is user adjustable and can be set anywhere between . 230 volts (230 millivolts) and 2. 3 volts. If you are unsure of your head unit's maximum undistorted output level, set these controls to their minimum (quietest) position and then turn the head unit's volume knob up until you can start to hear audible distortion and reduce the volume unit until the distortion goes away. At this volume setting, gradually increase the amplifier's sensitivity until you can start to hear distortion from the amplifier. Then reduce the sensitivity until it goes away. Using this method, the head unit's volume should reach approximately 3/4 of its maximum or more before distortion is heard in the system. 6 Warnings ZAPCO highly recommends that a system protection device (i. e. , fuse or circuit breaker) be placed within 18" of the battery. Although ZAPCO products have adequate internal protection, it is possible that power wiring could become pinched between the component and the battery - potentially resulting in a fire. The system protection device should be placed where it can be accessed easily and all wiring should be routed safely and correctly according to the following guidelines: · · · Do not run wiring close to hot or spinning objects. [. . . ] PC board insertion The components are inserted into American made printed circuit boards. PC soldering The printed circuit board assembly is wave soldered. Testing The PC board is 100% tested to design specs. Extrusion machining American made aluminum extrusion is cut and machined to precise tolerances. [. . . ]