Knoll MA250 manual

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A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Knoll MA250, 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.

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The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Knoll MA250 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 Knoll MA250. 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 Knoll MA250 should contain:
- informations concerning technical data of Knoll MA250
- name of the manufacturer and a year of construction of the Knoll MA250 item
- rules of operation, control and maintenance of the Knoll MA250 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 Knoll MA250 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 Knoll MA250, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Knoll 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 Knoll MA250.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Knoll MA250 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

    Trigger does n ot 1. Measure trigger voltage with a voltmeter. It work needs to be 11-16 volts DC to work (cur rent is about 35mA total per amp). See page 5 for details . Speaker pops 1. Speaker may need resis tor placed across termin al . when MA250 is Suggest 2000 oh m 1/4 watt. This di scharges the turned on or off speaker i nternal c apacitor i[...]

  • Page 2

    Precautions: The am plif ier is a wideband design with substantial power output capability. Certa in precaut i ons must be taken to ensure proper operation: 1. Never expose the unit to mo isture. 2. Never p l ug an input cab le into the amplifier while the amplifier is turned on. 3. Never apply the “thumb test” (touching the “hot” lead of t[...]

  • Page 3

    Hum and noise In most cases, one of the foll ow ing suggestions sh ould he lp you solve a hum noise in your system. P lease try these steps in the order shown, proceeding from one step to the next if the pr ior suggestion does not eliminate the problem. Suggestion #1 To determine if a cable TV con nection is responsible for the hum, first turn off [...]

  • Page 4

    9. If a video si gna l is being used to trigger the MA250 on and off, connect good quality short as poss ibl e video wire with a RCA jack to the MA250 “Video Input”. Make sure the mus ic sense button i s OUT. 10. If the mus ic sense or video input is being used to turn the MA205 on and off, set the “Mus i c Sense ” button to OUT. Adjust the[...]