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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Rolls RA900, 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 Rolls RA900 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 Rolls RA900. 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 Rolls RA900 should contain:
- informations concerning technical data of Rolls RA900
- name of the manufacturer and a year of construction of the Rolls RA900 item
- rules of operation, control and maintenance of the Rolls RA900 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 Rolls RA900 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 Rolls RA900, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Rolls 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 Rolls RA900.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Rolls RA900 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
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Page 1
RA900 PR OFESSIONAL PO WER AMPLIFIER OWNERS MANUAL LIMITED W ARRANTY This product is warranted to the original consumer purchaser to be free from defects in materials and workmanship under normal installation, use and service for a period of one (1) year from the date of purchase as shown on the purchaser ’ s receipt. The obligation of Rolls Corp[...]
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Page 2
SPECIFICA TIONS P ower Output , Ster eo: 570 W RMS/ch. 2 Ω 410 W RMS/ch. 4 Ω 260 W RMS/ch. 8 Ω Bridge d: 1100 W at t s RMS 4 Ω 850 W at t s RMS 8 Ω Input Connec tors: 1/4" TRS b alance d and X LR ba lanced Output Connec t ors: 1/4" and 5-way binding p ost s Sensi t iv it y: 0.9 V rms 0 dB V T HD: <.05% (20Hz - 20 kHz) @ r at [...]
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Page 3
INTRODUCTION Thank you f or y our purchase of the R OLLS RA900 Prof essional P ower Amplifier . The RA900 P ow er Amplifier is a tw o channel amp with two 410 w att RMS - 4 ohm outputs via 5-wa y binding posts. It ma y be bridged and connected to a 4 or 8 ohm load supplying up to 1100 W atts or 850 W atts respectiv ely . The unit is housed in a pai[...]
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Page 4
DESCRIPTION FRONT P ANEL CHANNEL A 0 10 RA900 CHANNEL B 0 10 PROTECT CLIP SIGNAL POWER POWER POWER: Applies power to the RA900 when connected to a properly grounded and pow ered ac outlet. CHANNEL 1 / 2 LEVEL CONTROLS: Adjust the output lev el of the indicated channel. When in Bridged mode, Channel 1 control adjusts the output le v el. POWER LED: I[...]