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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Kenwood KAC-816, 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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Unfortunately, only a few customers devote their time to read an instruction of Kenwood KAC-816. 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.
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First and foremost, an user manual of Kenwood KAC-816 should contain:
- informations concerning technical data of Kenwood KAC-816
- name of the manufacturer and a year of construction of the Kenwood KAC-816 item
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- safety signs and mark certificates which confirm compatibility with appropriate standards
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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Kenwood KAC-816 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 Kenwood KAC-816, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Kenwood 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 Kenwood KAC-816.
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Table of contents for the manual
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Page 1
KAC-816 MONO POWER AMPLIFIER INSTRUCTION MANUAL © PRINTED IN MEXICO B64-1170-00 (EM)[...]
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Page 2
2 Safety precautions T ake the following precautions to prevent fire and avoid personal injury : • When extending the battery cable, or ground cable, use 5mm 2 (A WG10) or larger automotive grade cable to avoid cable deterioration or damage to the covering. • Check that no metal objects (coins, tools, etc.) are left inside the unit to avoid sho[...]
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Page 3
3 Installation procedure Installation • Since the power amplifier has no parts which require operation, it can be installed at a position away from the driver’ s seat without any hindrances. As generally accepted positions for its installation, places such as inside the trunk, etc. can be considered. • Use the extension cables. (Optional) •[...]
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Page 4
4 Controls Operations of the following control and switches are required in accordance with the center unit and speakers connected with this unit. POWER IN FUSE(20A) BATT GND FUSE(20A) P.CON(REMOTE) SPEAKER OUTPUT 1 2 3 45 6 MONO POWER AMPLIFIER L 25Hz 15Hz INFRASONIC OFF INPUT SENSITIVITY(V) LPF FREQUENCY(Hz) GND R LINE IN 0.3 0.5 1 2 3 4 50 . 2 1[...]
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Page 5
0 RCA cable ground lead terminal ! LINE IN terminal @ Speaker level input terminals ■ Power indicator: When the power is turned on, the Power indicator lights. If the Power indicator does not light when the power is turned on, the protection function may be activated. Check whether there is any indication of trouble. ■ The protection function i[...]
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Page 6
• The genuine-accessory car stereo shall have a maximum power output of no more than 25 W. • Do not connect the speaker output leads from a power amplifier (Optional) to the speaker input terminals of this unit, for this may cause malfunction or damage. • Do not connect cables and leads to both RCA cable input jacks and the speaker input term[...]
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Page 7
7 POWER IN FUSE(20A) BATT GND FUSE(20A) P.CON(REMOTE) SPEAKER OUTPUT 20 20 SPEAKER OUTPUT SERVO ΙΙ ∑ SERVO ΙΙ ∑ - + ■ Power and Speakers cable connection Power control (REMOTE) lead terminal • Connect the ground cable to a metal part of the car chassis that acts as an electrical ground passing electricity to the battery‘s negative - t[...]
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Page 8
8 Sigma servo feed back The sound reproduced through conventional amplifiers is distorted due to the counterelectromotive force produced in the oscillating system of the speaker . The counterelectromotive force is particularly high with the woofer which requires a large drive mass.The sigma servo connection reduces distortion caused by the countere[...]
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Page 9
9 Specifications Specifications subject to change without notice. Audio Section Max Power Output (2 Ω ) ................................................................................................400 W × 1 Rated Power Output (4 Ω ) (4 Ω ) ....................................................................................200 W × 1 (DIN4[...]