Summary of PA24
Page 1
En power amplifier owner’s manual.
Page 2: Fcc Information (U.S.A.)
The above warning is located on the top of the unit. Explanation of graphical symbols the lightning fl ash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of suf fi cient ...
Page 3: Precautions
(5)-2 1/2 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 ot...
Page 4
(5)-2 2/2 • 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. • use only speaker cables for connecting speakers to the speaker jacks. Use of other types of cables may result in fire...
Page 5: Introduction
5 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...
Page 6: Controls and Functions
6 controls and functions ■ front panel 1 power/stand-by switch and indicator this turns the power of the ampli fi er on/off. When you press the switch to turn on the power, the indicator will light green. If the ampli fi er is connected to an amp control device acd1 or acu16-c and the ampli fi er ha...
Page 7
7 ■ rear panel 1 xlr inputs 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 (–). In bridge mode, only the xlr input of the channel a is active. 2 mode switch • stereo mode channels a and b will operate independentl...
Page 8
8 ■ speaker connections speakers can be connected to the ampli fi er 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. Connecti...
Page 9: Connection
9 connection ■ using a euroblock connector 1. If the wire insertion ports are closed, turn the screws on top of the connector counterclockwise to open the ports. 2. Insert the wires into the appropriate ports, following the indication of the pole on the input terminal, turn the screws on top of the ...
Page 10: Air Flow
10 air flow this unit uses a forced cooling system in which air comes in through the front opening and goes out the rear. 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 ...
Page 11: Specifications
11 specifications ■ general specifications 0 db=0.775 vrms, half power=1/2 output power (3 db below rated power) speci fi cations and descriptions in this owner’s manual are for information purposes only. Yamaha corp. Reserves the right to change or modify products or speci fi cations at any time wi...
Page 12
12 ■ block diagram.
Page 13
13 ■ dimensions 480 88 456 46 4 380 26 25 30 370 30 25 unit: mm.
Page 14: Troubleshooting
14 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. Current draw pc9501n pc6501n pc4801n indicator possible cause remedy protection circuit clip indicator lights up there is ...
Page 15
Pc3301n pc2001n 1/8 power is typical of program material with occasional clipping. Refer to these fi gures for most applications. 1/3 power represents program material with extremely heavy clipping. Test signal: pink noise, bandwidth limited from 22hz to 22khz 1w = 0.860kcal/h, 1btu = 0.252kcal note...
Page 16
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 fi gurant dans la liste suivante. Die einzelheiten zu produkten sind...