![Yamaha P-4050 [11/18] Caution for speaker connection](/img/pdf.png)
Yamaha P-4050 [11/18] Caution for speaker connection
![Yamaha P-4050 [11/18] Caution for speaker connection](/views2/1013971/page11/bgb.png)
Содержание
- Power amplifier amplificateur de puissance 1
- Yamaha 1
- Applies only to products distributed by yamaha corporation of america 2
- Canada 2
- Connecting the plug and cord warning this apparatus must be earthed 2
- Fcc information u s a 2
- Important notice for the united kingdom 2
- This applies only to products distributed by yamaha canada music ltd 2
- This applies only to products distributed by yamaha kemble music u k ltd 2
- Air filter maintenance 4
- Always use the correct power supply 4
- Amplifier ventilation 4
- Avoid excessive heat humidity dust and 4
- Avoid physical shocks 4
- Clean with a soft dry cloth 4
- Do not open the case or attempt repairs 4
- Handle cables carefully 4
- Make sure power is off before making or 4
- Or modifications yourself 4
- Precautions 4
- Removing connections 4
- Vibration 4
- Cooling fans 5
- Input attenuators 5
- Operation 5
- Power switch indicator 5
- Protection indicator 5
- Thermal indicator 5
- Rear panel 6
- 2сн e e 7
- Gnd terminal 7
- Input connectors trs phone type 7
- Input mode switch 7
- O input terminals screw type 7
- Output mode switch 7
- Speaker terminals 7
- 4 inputs 4 outputs 1 input 4 outputs 3 inputs 3 outputs 1 input 3 outputs 2 inputs 2 outputs 1 input 2 outputs 8
- Amplifier with 4 inputs and 4 outputs amplifier with 1 input and 4 outputs 8
- Combining the input mode and output mode switch settings the amplifier offers the following six application setups 8
- Connections 8
- D c b b a b 8
- Mixer or pre amp output 8
- To input terminals 8
- C 0 a b 9
- C 0 a d 9
- Mixer or pre amp output 9
- To input terminals 9
- Installation details 10
- Permanent rack mounting 10
- Portable rack mounting 10
- Caution for speaker connection 11
- Cleaning the filter elements 12
- Dry the filter elements thoroughly 12
- If the filter elements are exceptionally dirty deter gent washing up liquid may be used 12
- Indicator display probable cause remedy protective circuit operation 12
- Make sure the power to the amplifier is off 12
- Never replace the filter elements while they are still wet replace the elements and front filter grilles the replacement part number of the filter element is vm57950 12
- Remove the filter elements and wash in plain water 12
- Remove the power plug from the ac mains socket 12
- 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 12
- To ensure adequate cooling air intake the filter element must be cleaned when it has become clogged the following points describe the cleaning procedure 12
- Troubleshooting 12
- For european model 13
- Purchaser user information specified in en55103 1 and en55103 2 inrush current 16a conformed environment el e2 e3 and e4 13
- Specifications 13
- Channel separation 14
- Frequency response 14
- Output power vs power consumption 14
- Performance graphs 14
- Thd vs output power 14
- Block diagram 15
- Dimensions 16
- Unit mm inch 16
- Achtung 17
- Advarsel 17
- Attention 17
- Avvertenza 17
- Caution 17
- Entretien 17
- Kundendienst 17
- Observera 17
- Service 17
- Varoitus 17
- Yamaha 18
- Yamaha corporation 18
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CAUTION FOR SPEAKER CONNECTION 1 Turn off the POWER switch Speaker output terminals 2 Remove the cover attachment screws and remove the protective cover from the speaker terminals The protective cover is equipped with British model and general model Cover attachment screws Protective cover 3 After removing approx 10 mm of covering insula tion from the ends of the speaker cables pass the bare ends of the speaker wires through the holes in the corresponding speaker terminals and tighten the terminals to securely clamp the wires At this time make sure that the bare ends of the speaker cables do not extend from the terminals in such a way that they touch the chassis or protective cover Connect the speakers used for 2 channel 3 channel or 4 channel output to the corresponding speaker termi nals Take care that the end of each speaker cable does not short with another end of the speaker cable or with the chassis or protective cover and then secure the wire in place by tightening down the terminal Also always make sure that the power is OFF before attaching or removing speaker wires If long speaker cables are required use cables with as heavy a gauge as possible to protect against degrada tion caused by the damping factor and to prevent power loss inside the speaker cables When operating the P4050 in 2 channel output mode it delivers a hefty MOW MOW 8 ohms Be sure to use speaker systems of sufficient input capacity If the allowable input power of the speaker system is lower than the rated output power of the amplifier you can protect the speakers by connecting an in line fuse between each speaker and the amplifier You can use the following formula to determine the size of fuse needed for your system Po PR l Po Continuous allowable input power of speaker noise or RMS R Nominal impeadance of speaker I Necessary fuse capacity A Wire should not touch the chassis or protective cover 4 Reattach the protective cover over the speaker ter minals Example Speaker continuous allowable input power 100 W Speaker impedance 8 ohm Using these values Necessary fuse capacity A 3 5 9