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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Dual XPR520, 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 XPR520 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 XPR520. 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 XPR520 should contain:
- informations concerning technical data of Dual XPR520
- name of the manufacturer and a year of construction of the Dual XPR520 item
- rules of operation, control and maintenance of the Dual XPR520 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 XPR520 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 XPR520, 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 XPR520.
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 XPR520 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 Amplifier XPR520[...]
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Page 2
2 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 qualifiedtechnician forinstruc[...]
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Page 3
Note: Be sureto followspecific instructionsincluded withyour amplifierinstallation kit(not includedwith thisamplifier). Theinformation belowshould beused ageneral guideline only. Power Wire (BAT+) • Disconnectnegative batteryterminal beforeproceeding.?[...]
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Page 4
4 Power and Speaker Connections Ground Connection RemoteConnection +12VDCBattery Connection 1 2 3 Fuse(s) SpeakerConnection(s) 4 5 Audio Inputs and Controls XPR522 RCALine Inputs SpeakerInputs Gain 1 2 3 CrossoverMode CrossoverFrequency Control Bass Boost XPR522 2 5 3 6 4 4 5 6 1 3 2 5 4 1 XPR520 XPR520[...]
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Page 5
5 Fuse Rating Whenreplacing fuses,makesure newfuse is the correct type and amperage. Using an incorrect fuse could damage the amplifier. 30amp ATOx1 Main Power Connections Connect+12V, GNDand REMwires accordingly.A suitablefuse MUSTbe installedon the +12Vlead within[...]
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Page 6
6 Amplifier Connections Speaker Connections Connectspeaker wiresobserving polarity. The minimumimpedance loadfor theXPR520 is2 ohms stereo and 4 ohms bridged. Use ofloads lowerthan theseis not recommended and may cause amplifierdamage. TheXPR520 canbe wiredfor st[...]
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Page 7
7 Configuration/Setup Theinput levelcontrol (gain)is usedto obtainthe best possiblematch betweenthe headunit audiooutput andthe amplifier input. • Beginby turningthe inputlevel controlfully counterclockwise. • Next,turn upthe headunit?[...]
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Page 8
8 Specifications CEA-2006Power Standard Specifications (reference: 14.4VDC, 20Hz~20kHz) PowerOut put (14.4VDC,20Hz ~20kHz): 50 Watts RMS x 2 channels @ 4 ohms and ≤ 1% THD+N 75 Watts RMS x 2 channels @ 2 ohms and ≤ 1% THD+N 150 Watts RMS x 1 channel @ 4 ohms (bridged) and ≤ 1% THD+N Total dynamic power: 400 Wat[...]
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Page 9
9 Limited One-Year Warranty Thiswarranty gives youspecific legal rights.You may alsohave otherrights whichvary fromstate tostate. DualElectronics Corp. warrantsthis product to the original purchaser to be free fromdefects in materialand workmanship for a p[...]
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Page 10
10 Notes[...]
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Page 11
11 Notes[...]
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Page 12
DualElectronics Corp. TollFree: 1-866-382-5476 www.dualav.com ©2013Dual ElectronicsCorp. NSA0313-V01[...]