User manual YAMAHA PC9501N

[. . . ] POWER AMPLIFIER Owner's Manual EN 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. [. . . ] Main features include · Three modes are provided to support a broad range of applications: STEREO mode which can be driven by two independent sources, PARALLEL mode in which a monaural source drives both channels, and BRIDGE mode in which the two internal amps function as a single mono amp. · Balanced XLR connector and Euroblock connector inputs, and Speakon connector and five-way binding post outputs are provided. · A high pass filter switch that cuts frequencies below 20 Hz, and detented attenuators and level meters for channels A and B are provided. · Metering and indicators include easily visible two-channel level meters, a PROTECTION indicator that shows the state of various protection systems (power on/off detection, output protection, DC detection), a TEMP indicator that indicates heat sink overheating, and a REMOTE indicator that indicates the external remote status. · The PC3301N enables parallel connection of multiple high-impedance speakers that support 100 V line output. If the distortion of the output signal exceeds 1%, the red CLIP indicator will light. 6 Volume knobs These are detented volume knobs that attenuate the input signals of channels A and B over a range of ­ ­ 0 dB. In BRIDGE mode, only the channel A knob is used. 2 REMOTE indicator This indicator will light green if the amplifier is being controlled from an external device connected to the DATA port located on the rear panel. 7 Air intakes The amplifier has a forced-air cooling fan that takes in air from the front and exhausts it from the rear. You must make sure that these intakes are not obstructed. 3 PROTECTION indicator This indicator lights up red when the protection circuit is operating. During this time, the amp will be disconnected from the speaker system, and no sound will be output from the speaker. The protection system activates in the following situations: · When the amplifier is turned on The protection system activates for approximately ten seconds when the amplifier is turned on. After ten seconds, the protection system deactivates automatically and the amplifier is ready for normal operation. · If a DC voltage is detected at the amplifier's outputs Turn off the power, and then turn the power back on again. · If the amplifier overheats When this occurs, the TEMP indicator will be lit. See the Precautions section of this Owner's Manual for ways to prevent the amplifier overheating. 8 Security cover If you want to keep the volume settings from being modified, attach the included security cover using the screw holes shown below, so that the volume controls are inaccessible. 4 TEMP indicator This indicator will light red if the heat sink temperature exceeds 85 degrees Celsius. 6 Rear Panel 12 3 4 20 5 6 7 8 9 1 XLR inputs These balanced XLR-3-31 type connectors are used to connect input signals. They are wired pin 1­ground, pin 2­hot (+), and pin 3­cold (­). 4 SPEAKERS jacks · These are Speakon type output jacks. · These are five-way binding post output jacks. 5 DATA PORT jack An amp control unit, such as the ACU16-C, can be connected to the DATA PORT jack for monitoring or controlling the amplifier from the external device. Hot 2 3 1 Ground 6 AMP ID switch Cold In Bridge mode, only the XLR input of the channel A is active. When an amp control unit, such as the ACU16-C, is connected to the DATA PORT jack 5, the AMP ID switch can be used to set the amplifier's ID. 7 Euroblock connector This is a balanced input jack. The included Euroblock connector can be used to make connections here. 2 MODE switch · STEREO mode Channels A and B will operate independently. · PARALLEL mode In PARALLEL mode, the channel A input signal will be sent to the channel A power amp and to the channel B power amp. · BRIDGE mode In BRIDGE mode, channels A and B will operate simultaneously, functioning as a single mono amp. 8 AC inlet Connect the socket of the included AC cable to this inlet. Connect the plug of the AC cable to an AC outlet that meets the power supply conditions printed below this inlet. 9 GROUND Screw terminal If you are having a problem with hum or noise, use this terminal to connect to ground or to connect to the chassis of the mixer, preamp, or other device in your system. 3 HPF 20 switches These switches are used to turn on and off the HPF (High Pass Filter) for each channel. When set to ON, frequencies below 20 Hz are filtered using a 12 dB/ octave high pass filter. 7 Speaker connections Speakers can be connected to the amplifier as shown below. Note that speaker impedance will vary according to the connection method and the number of speakers. [. . . ] The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED. · This applies only to products distributed by Yamaha-Kemble Music (U. K. ) Ltd. (3 wires) This mark indicates a dangerous electrically live terminal. When connecting an external wire to this terminal, it is necessary either to have "a person who have received appropriate guidance on handling" make the connection or to use leads or a cord that have been manufactured in such a way that the connection can be made simply and without problem. For details of products, please contact your nearest Yamaha representative or the authorized distributor listed below. Pour plus de détails sur les produits, veuillez-vous adresser à Yamaha ou au distributeur le plus proche de vous figurant dans la liste suivante. Die Einzelheiten zu Produkten sind bei Ihrer unten aufgeführten Niederlassung und bei Yamaha Vertragshändlern in den jeweiligen Bestimmungsländern erhältlich. [. . . ]