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. 2. 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. Follow all installation instructions.
PRECAUTIONS PLEASE READ CAREFULLY BEFORE PROCEEDING * Please keep this manual in a safe place for future reference. WARNING Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock, short-circuiting, damages, fire or other hazards. These precautions include, but are not limited to, the following: Power supply/Power cord Water warning • Only use the voltage specified as correct for the device.
Connections Handling caution • Before connecting the device to other devices, turn off the power for all devices. Before turning the power on or off for all devices, set all volume levels to minimum. • When turning on the AC power in your audio system, always turn on the device LAST, to avoid speaker damage. When turning the power off, the device should be turned off FIRST for the same reason. • Use only speaker cables for connecting speakers to the speaker jacks.
Introduction Thank you for purchasing a Yamaha PC9501N, PC6501N, PC4801N, PC3301N, or PC2001N Series Power Amplifier. The PC Series of power amplifiers was developed from Yamaha’s wealth of experience in building PA equipment and its tradition of careful attention to every detail of circuit design. These power amplifiers feature high power and superb quality together with superior reliability and stability, guaranteeing the highest possible audio performance.
Controls and Functions ■ Front Panel 234 7 1 5 1 POWER/STAND-BY switch and indicator This turns the power of the amplifier on/off. When you press the switch to turn on the power, the indicator will light green. If the amplifier is connected to an amp control device ACD1 or ACU16-C and the amplifier has been commanded to enter STAND-BY mode, this indicator will light orange.
■ Rear Panel 1 2 4 3 20 5 6 8 7 1 XLR inputs 9 4 SPEAKERS jacks These balanced XLR-3-31 type connectors are used to connect input signals. They are wired pin 1–ground, pin 2–hot (+), and pin 3–cold (–). • These are Speakon type output jacks. Speakon type cable plugs can be connected here. • These are five-way binding post output jacks. 5 DATA PORT jack Hot 1 2 Ground 3 Cold In Bridge mode, only the XLR input of the channel A is active.
■ 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. Please be sure that your speaker’s impedance is not less than the relevant minimum value indicated below.
Connection ■ Using a Euroblock connector Use a screwdriver to fix the wires. If cables will be frequently connected and disconnected, as in the case of a portable installation, we recommend that you use ferrules with insulation sleeves. Use a ferrule whose conductor portion has an external diameter of 1.6 mm or less, and a length of approximately 7 mm (such as the AI0,5-6WH made by the Phoenix Contact corporation). 1.
Air Flow This unit uses a forced cooling system in which air comes in through the front opening and goes out the rear. Side View Rear View Front Air intake Air exhaust Rack Mounting If multiple high-power amp units are mounted in a rack with poor ventilation, the heat from the amps will cause the interior of the amp to become very hot, causing the performance of the amps to be impaired.
Specifications ■ General Specifications PC9501N Output Power 1 kHz, THD+N= 1% 120V/240V 8 Ω/STEREO 4 Ω/STEREO MIN PC6501N 230V PC4801N PC3301N PC2001N 120V/240V 230V 120V/240V 230V 120V/240V 230V 120V/240V 230V 700 W x 2 750 W x 2 550 W x 2 500 W x 2 350 W x 2 400 W x 2 230 W x 2 250 W x 2 1600 W x 2 1650 W x 2 1100 W x 2 1150 W x 2 450 W x 2 1000 W x 2 1050 W x 2 850 W x 2 800 W x 2 600 W x 2 700 W x 2 400 W x 2 8 Ω/BRIDGE 3200 W 3300 W 2200 W 2300 W 1700 W 1600 W 12
■ Block Diagram 12
46 4 380 456 26 ■ Dimensions 370 30 25 480 88 25 30 Unit: mm 13
Troubleshooting The following table lists the main causes of abnormal operation and the corrective measures required as well as the protective circuit operation in each case. Indicator Possible Cause CLIP indicator lights up PROTECTION indicator lights up Remedy Protection Circuit There is a short at the amplifier’s speaker outputs, the speaker’s inputs, or in the wiring. Locate and remove the short. The impedance of the connected speaker is too low.
PC3301N standby idle 8 Ω/ch 1/8 power 4 Ω/ch 8 Ω/ch 1/3 power 4 Ω/ch Line Current (A) 100/120V 230/240V 0.08 0.04 1.0 0.5 2.7 1.5 5.0 2.7 6.4 3.5 12.0 6.
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