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Yamaha 150 Owner's Manual
Summary of 150
Page 1
Power amplifier xh150 owner’s manual e power power amplifier xh series power signal clip signal clip protection ch a ch b on off.
Page 2: Introduction
2 introduction thank you for purchasing a yamaha xh150 power amplifier. The development of the xh150 was enriched by yamaha’s wealth of experience in building pa equipment and its tradition of precision circuit design technology. This amp is dedicated to driving high-impedance speakers, and feature ...
Page 3: Precautions
3 precautions • connect this unit’s power cord only to an ac outlet of the type stated in this owner’s manual or as marked on the unit. Failure to do so is a fire and electrical shock hazard. • do not allow water to enter this unit or allow the unit to become wet. Fire or electrical shock may result...
Page 4: Controls and Functions
4 controls and functions ■ front panel power power signal clip signal clip protection ch a ch b on off 3 4 2 1 1 power switch and indicator this is the main power switch. Press to power on the amplifier. Press again to power off. The power indicator lights up when the amplifier is powered on. 2 sign...
Page 5: ■ Rear Panel
5 ■ rear panel filter channel b channel a input channel b channel a input channel b channel a speakers channel b 70v = 32 Ω /channel 100v = 64 Ω /channel channel a g g output voltage channel b channel a low cut low cut 40hz 40hz off off 80hz 80hz high cut high cut 5khz 5khz 20 15 10 6 3 70v 100v 0 –...
Page 6: ■ Connecting Speakers
6 ■ connecting speakers the xh150 series enables you to connect multiple high-impedance speakers in parallel that support 70 v or 100 v line output. The number of speakers that can be connected varies depending on the speakers’ rated input. You can connect speakers with a total rated input per chann...
Page 7
7 you can also connect multiple speakers with a different rated input to a single channel. For example, you can connect ten speakers with a rated input of 5 w and ten speakers with a rated input of 10 w (total 150 w), as shown below: speakers channel b 70v = 32 Ω /channel 100v = 64 Ω /channel channe...
Page 8: Caution For Connection
8 caution for connection 1. Turn off the power switch. 2. Remove the cover attachment screws and remove the protective cover from the speaker terminals. Screw 3. After removing approx. 15 mm of insulation from the ends of the speaker cables, bind the bare ends of the speaker wires in the correspondi...
Page 9: Rack Mounting
9 rack mounting ■ mounting in an eia standard rack 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. In particular, when mounting in a rack wh...
Page 10: Specifications
10 specifications ■ general specifications power output level (rated power) 150 w + 150 w 20 hz~20 khz, thd+n= 0.1% r l = 64 Ω /100 v, r l = 32 Ω /70 v power bandwidth half power 10 hz~40 khz (thd+n= 0.1%) total harmonic distortion (thd+n) 20 hz~20 khz, half power 0.1% frequency response +0.5, –1 db...
Page 11: ■ Block Diagram
11 ■ block diagram amp voltage output 10khz 5khz 80hz 40hz 40hz 80hz 5khz 10khz 100v 70v clip signal inv speakers channel b channel a off hpf low cut off lpf high cut high cut lpf off low cut hpf ba ba channel b channel a inv protection signal – + + – input + – g g – + channel a channel b channel a ...
Page 12: Troubleshooting
12 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 c a se. Protection circuit remedy probable cause indicator clip indicator lights. Protection indicator lights. There is a short...
Page 13
Yamaha corporation v294640 r2 1 ip 16 pro audio division, #18/3 p.O. Box 3, hamamatsu, 430-8651, japan np printed in taiwan.