Yamaha 150 manual

1
2
3
4
5
6
7
8
9
10
11
12
13

Go to page of

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Yamaha 150, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Yamaha 150 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Yamaha 150. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Yamaha 150 should contain:
- informations concerning technical data of Yamaha 150
- name of the manufacturer and a year of construction of the Yamaha 150 item
- rules of operation, control and maintenance of the Yamaha 150 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Yamaha 150 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Yamaha 150, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Yamaha service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Yamaha 150.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Yamaha 150 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • 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

    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 high power and superb quality together with supe[...]

  • Page 3

    3 P recautions • 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. • Do not place heavy objects, includi[...]

  • Page 4

    4 C ontrols and F unctions ■ F r ont P anel PO WER PO WER SIGNAL CLIP SIGNAL CLIP PRO TECTION 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 SIGNAL indicators These green LED indicators[...]

  • Page 5

    5 ■ Rear P anel FIL TER 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 VOL T AGE 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 –dB 00 40 30 25 20 15 10 6 3 0 –dB 00[...]

  • Page 6

    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 channel of up to 150 W. SPEAKERS CHANNEL B 70V = 3[...]

  • 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 CHANNEL A – – + + 10 W x 10 units (= 100 W) Rate[...]

  • Page 8

    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 corresponding speaker terminals and tighten the terminals to [...]

  • Page 9

    9 Rack Mounting ■ Mounting in an EIA standar d r ack 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 whose back can not be left open, mount according[...]

  • Page 10

    10 Specifications ■ Gener al 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 f= 20 Hz~50 kHz Intermodulation distort[...]

  • Page 11

    11 ■ Block Diagr am Amp VOLT AG E 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 PRO TECTION SIGNAL – + + – INPUT + – G G – + CHANNEL A CHANNEL B CHANNEL A CHANNEL B INPUT INPUT OFF CLIP Prote[...]

  • Page 12

    12 T roubleshooting 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 at a speaker terminal, amplifier terminal, or wi[...]

  • 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[...]