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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Dual XPA4640, 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 Dual XPA4640 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 Dual XPA4640. 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 Dual XPA4640 should contain:
- informations concerning technical data of Dual XPA4640
- name of the manufacturer and a year of construction of the Dual XPA4640 item
- rules of operation, control and maintenance of the Dual XPA4640 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 Dual XPA4640 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 Dual XPA4640, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Dual 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 Dual XPA4640.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Dual XPA4640 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
INSTALLATION/OWNER ’ S MANUAL Mobile Power Amplifiers XPA SERIES XPA2500 XPA4640[...]
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Page 2
2 XPA SERIES INSTALLATION Preparation Please read entire manual before installation. Due to the technical nature of amplifiers, it is highly recommended that your DUAL amplifier is installed by a professional installer or an authorized dealer. Before You Start • Disconnectnegative batteryterminal. (consulta qua[...]
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Page 3
NOTE Be sure to follow specific instructions included with your amplifier installation kit (not included with this amplifier). The information below should be used a general guideline only. Power Wire (+12V) • Disconnectnegative batteryterminal beforeproceeding[...]
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Page 4
4 XPA SERIES INSTALLATION Power and Speaker Connections LEDIndicator BassBoost CrossoverMode Switch CrossoverFrequency 1 2 3 4 InputLevel Control HighLevel Inputs LowLevel Inputs InputMode Switch 5 6 7 8 XPA2500 XPA4640 3 4 5 6 7 2 1 1 2 3 4 5 6 7 7 8[...]
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Page 5
SpeakerConnection(s) Ground Connection RemoteConnection 1 2 3 +12VDCBattery Connection Fuse(s) 4 5 5 XPA SERIES INSTALLATION Audio Inputs and Controls 43 2 5 1 XPA2500 XPA4640 1 2 3 4 5[...]
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Page 6
6 XPA SERIES INSTALLATION Fuse Rating Whenreplacing fuses,makesurenew fuse is the correct type and amperage. Using an incorrect fuse could damage the amplifier. XPA2500 25 ampATOx 1 XPA4640 25 ampATOx 2 Power/Ground Wire Size Foroptimum performance,useonlythe wire [...]
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Page 7
7 XPA SERIES INSTALLATION Amplifier Connections Speaker Connections Connectspeaker wiresobserving polarity.The minimumimpedance load for the XPA2500 and XPA4640 is 2 ohms stereo and 4 ohms bridged.Use ofloads lowerthan these is not recommended and may cause amplifier damage. TheXPA2500 and?[...]
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Page 8
8 XPA SERIES OPERATION Configuration/Setup Theinput levelcontrol (gain)is usedto obtainthebest possiblematch betweenthe headunit audiooutput and theamplifier input.Begin byturning theinput levelcontrol fullycounterclockwise. Next,turn upth[...]
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Page 9
9 XPA SERIES WARRANTY Limited One-Year Warranty Thiswarranty givesyou specificlegal rights. Youmay alsohave otherrights whichvary from state to state. DualElectronics Corp.warrants thisproduct to the original purchaser to be free from defects in materialand wo[...]
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Page 10
10 XPA SERIES OPERATION Specifications CEA-2006Power StandardSpecifications (reference: 14.4VDC, 20Hz~20kHz) PowerOutput: 50 Watts RMS x 2 channels at 4 ohms and < 1% THD+N Signalto noiseratio: 75dBA (reference: 1 watt into 4 ohms) Additionalpower[...]
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Page 11
11 XPA SERIES OPERATION Notes[...]
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Page 12
Dual Electronics Corp. TollFree: 1-866-382-5476 www.dualav.com ©2008Dual ElectronicsCorp. NSA0608-V01 XPA SERIES OPERATION Troubleshooting Problem Cause Action Unit will not turn on (no power LED indicator) +12Vwire notconnectedor incorrectvoltage REMwire notconnectedor incor[...]