User manual YAMAHA AM802

[. . . ] 8 Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9 Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. [. . . ] If you know you will not use this unit for a long period of time, such as when going on vacation, remove the power plug from the AC outlet. Leaving it connected is a potential fire hazard. 3 — For correct operation — Connector pin assignments ● Interference from Cell Phones ● XLR-type connectors are wired as follows Pin 1: ground; Pin 2: hot (+); Pin 3: cold (–). Use of a mobile phone near this unit may induce noise. If noise occurs, move the phone further from the unit. Always turn the power off when the amplifier is not in use. Illustrations in this manual are for explanatory purposes only, and may not match the actual appearance of the product during operation. Company names and product names used in this Owner's Manual are trademarks or registered trademarks of their respective owners. FCC INFORMATION (U. S. A. ) 1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT! This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product. IMPORTANT: When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST be used. Failure to follow instructions could void your FCC authorization to use this product in the USA. * This applies only to products (KAX-5000) distributed by YAMAHA CORPORATION OF AMERICA. 4 Introduction Thank you for your purchase of the YAMAHA KAX-5000, KAX3500 or KAX-2500 power amplifier. These KAX-series amplifiers fully incorporate Yamaha’s renown technological expertise, and offer high reliability, rock-solid stability, and superb acoustic characteristics—all in a trim, 2U-sized package. Features • With two types of input jacks (balanced XLR and balanced phone) and three types of output jacks (Speakon, 5-way binding post, and phone), the KAX-series is suitable for a wide variety of applications and installed systems. 15 5 Controls and Functions ■ Front Panel 2 4 8 1 3 57 6 8 1 POWER switch and indicator Press to toggle the power on or off. The POWER indicator lights up green when the power is ON. 2 TEMP indicator Lights up red if the heat sink temperature exceeds 85°C (185°F). How to install the security cover (1) Use the supplied hex wrench to remove the four attachment screws from the amplifier. (2) Adjust the security cover to the position of screw holes. Fasten it into place using the same screws. 3 PROTECTION indicator Lights up red to indicate that protection is in effect. Specifically, lights up if the heat sink overheats, or if a DC voltage is detected at the amplifier outputs. Also lights up for about three seconds at time of power-on, as the amp gets ready to operate. To provide protection, the unit will not output any sound from the speakers while this indicator is lit up. When start-up is completed or the problem is corrected, the indicator goes off and normal operation resumes. 4 CLIP indicator Lights up red when the output signal distortion on the corresponding channel rises above 1%—indicating that “clipping” has occurred because the signal level is too high. 7 indicator Lights up yellow if the YS PROCESSING switch on the rear panel is set ON. (See page 7. ) 8 Air intakes The amplifier uses forced-air cooling. The cooling fans draw air in from the front and exhaust it through the rear. Please be sure that you do not block the air intakes or exhaust vents. [. . . ] Remedy Protection Circuit PROTECTION indicator lights. Consult your dealer or the The relay operates to protect nearest Yamaha service center. the speaker system. KAX-5000 Indicator(s) Power has been shut down. (All indicators are off. ) Possible Cause A DC voltage of ± 2 V or greater was generated in the power amplifier’s output circuit. Remedy Protection Circuit The protection circuitry shut off Consult your dealer or the the power to protect the nearest Yamaha service center. [. . . ]